Newsletter - Annals of the Brazilian Academy of Sciences

ISSUE 60

AABC - volume 95.1 2023

We have finally closed this year first issue of the Annals of the Brazilian Academy of Sciences (AABC)! It took us a little more than usual, but, as we have adopted continuous publications, other issues have already had some papers published on-line and new ones are continuously being added.

There is a great variety of areas presented here. Most contributions were classified in Ecosystems (Ecosy - 18), followed by Microbiology (Mcbio - 7), Animal Science (AnSci - 7), and Cellular and Molecular Biology (CeMoBio - 6). Other studies address topics regarding Health Sciences (HeSci - 6), Engineering Sciences (EnSci - 4), Social Sciences (SocSci - 4), Mathematical Sciences (MaSci - 3), Chemical Sciences (ChSci - 3), Biomedical Sciences (BmSci - 2), Geosciences (Geosci - 2), Crop Science (CrSci - 1), Soil Science (SoiSci - 1), and Forestry Science (FoSci - 1).

Leading the papers published in the present issue (95.1), Ecosystems shows a variety of studies, from the invertebrate community structure in rivers from Central Andes and the spatial variation of fish assemblages in neotropical reservoirs, to the diversity of non-marine mollusks affected by urbanization in one specific area. I would also like to point out a study on Federal Protected coastal areas in northeastern Brazil concerning mangrove forests.

In Microbiology, I would like to call your attention to a study on the biotechnological potential of microorganisms that are classified as extremophiles from Argentina. Other contributions in this area focus on Candida infections and Pestivirus.

Regarding Health Sciences, articles include a review of the papers on esophageal cancer, the monkeypox virus, and problems regarding the risk factors of post-Covid patients.

In Biomedical Sciences, there is an interesting study on sea lice that plague marine fishes, with serious economic consequences, and in Social Sciences, researchers have tried to correlate the influence of the ability of scientists to get funded with citation of scientific manuscripts and their impact.

Last, but not least, I would like to call your attention to the editorial note that discusses the responsibility of editors and reviewers regarding matters concerning the publication of studies based on cultural objects.

Please keep in mind that since 2000 all papers published by the AABC can be downloaded free of charge at the SciELO site and previous editions of the Newsletter are available at theABC website. And keep in mind that our journal has been recently classified as Qualis A in all areas - an important achievement!

We are now inviting you to scroll through the text and click on the title of the article that interests you! And let your colleagues know about the Annals of the Brazilian Academy of Sciences!

Alexander W. A. Kellner
Editor-in-Chief

MATHEMATICAL SCIENCES

1- Super-critical Hardy-Littlewood inequalities for multilinear forms

DANIEL NÚÑEZ-ALARCÓN, DJAIR PAULINO & DANIEL PELLEGRINO

The multilinear Hardy--Littlewood inequalities provide upper estimates for the sum of the coefficients of multilinear forms defined on classical sequence spaces, under certain assumptions on the spaces considered. In this paper we begin the investigation of cases not covered by the previous approaches. 

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2- Visual Field Coordinate Systems in Visual Neurophysiology

MARCELO GATTASS & RICARDO GATTASS

Algorithms have been designed to: 1. Compare visual field coordinate data, presented in different representation systems; 2. Identify the distance in degrees between any two points in the visual field; 3. Predict new coordinates of a given point in the visual field after the rotation of the head, around axes that pass through the nodal point of the eye. Formulas are proposed for the transformation of Polar coordinates into Zenithal Equatorial coordinates and vice versa; of polar coordinates into Gnomic Equatorial of double meridians and vice versa; and projections of double meridians system into Zenithal equatorial and vice versa.

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3- On a continuous Gale-Berlekamp switching game D

DANIEL PELLEGRINO, JANIELY SILVA & EDUARDO V. TEIXEIRA

In this paper we propose a continuous version of the Gale-Berlekamp switching game (sometimes called unbalancing lights problem), where vectors of the plane replace light bulbs and knobs substitute the discrete switches used to invert the state of the bulbs in the original problem. In our approach, we also allow the game board not to be non-square.  

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CHEMICAL SCIENCES

4- Synthesis of novel glycerol-fluorinated triazole derivatives and evaluation of their phytotoxic and cytogenotoxic activities

FERNANDO F. BARCELOS, THAMMYRES A. ALVES, POLIANA A.R. GAZOLLA, RÓBSON RICARDO TEIXEIRA, VAGNER T. DE QUEIROZ, MILENE M. PRAÇA-FONTES, PEDRO A.B. MORAIS, VICTOR R. FONSECA, WANDERSON ROMÃO, VALDEMAR LACERDA JÚNIOR, RODRIGO SCHERER & ADILSON V. COSTA

The control of weeds in agriculture is mainly conducted with the use of synthetic herbicides. However, environmental and human health concerns and increased resistance of weeds to existing herbicides have increased the pressure on researchers to find new active ingredients. It is herein described the synthesis of glycerol-fluorinated triazole derivatives and evaluation of their phytotoxic and cytogenotoxic activities. Starting from glycerol, ten fluorinated triazole derivatives were prepared in four steps. The assessment of them on Lactuca sativa revealed that they present effects on phytotoxic and cytogenotoxic parameters with different degrees of efficiency.

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5- Insecticidal activity of the organotellurium 2-Phenylethynyl-Butyltellurium on the Drosophila melanogaster model

KARINA C. BITTENCOURT & RAFAEL R. DE SOUZA

This study assessed the insecticidal activity of 2-Phenylethynyl-Butyltellurium (PEBT), a synthetic organotellurium compound that has been tested in mammals without showing toxicity, using Drosophila melanogaster as a model. Three concentrations were tested (0.325 µmol L^-1, 1.300 µmol L^-1, and 5.200 µmol L^-1) at 24 and 48h, and the flies were submitted to behavioral tests and acetylcholinesterase analysis. Also, the mortality rate, 50%, 80%, and 95% Lethal Concentrations (LC₅₀, LC₈₀, and LC₉₅) were calculated. Our results show that PEBT presented insecticidal activity against Drosophila melanogaster at all tested concentrations, which caused locomotor impairment and increased acetylcholinesterase activity in the flies’ heads.

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6- Lychnophora pinaster in endangered campos rupestres: phenolic compounds and population ecogeography

DAYANE G.P.O. DOS SANTOS, LILIAN C. CORRÊA, JÚLIO C.R.L. SILVA, JORDANY A.O. GOMES, JOÃO SEMIR, MARCELO MONGE, LIN C. MING, ERNANE R. MARTINS, MARIA I. ZUCCHI, LEANDRO W. HANTAO, ALEXANDRA C.H.F. SAWAYA & MARCIA ORTIZ M. MARQUES

Lychnophora pinaster, known as arnica-mineira, is endemic to campos rupestres, at risk of extinction and used in folk medicine for trauma, as anti-inflammatory and healing agents. This study aimed to characterize the phenolic constituents and the ecogeography of  populations of L. pinaster collected in the State of Minas Gerais, Brazil. The profile of phenolic constituents in populations varied according to geographic origin. The environment of occurrence of L. pinaster in the state of Minas Gerais is diverse, contributing to the chemical diversity of the populations, as well as the morphological aspects in the different regions.

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BIOMEDICAL SCIENCES

7- Global distribution patterns of Caligus Müller, 1785 (Copepoda: Caligidae) associated to teleost fishes, with physiological and histopathological data and description of treatment strategies

MARCOS TAVARES-DIAS & MARCOS S.B. OLIVEIRA

Caligus are known as sea lice and mostly occur on marine fish. They are globally distributed and have been considered harmful pathogens for fisheries, with major economic consequences for aquaculture as well. High infestation by these parasites can cause mortality in fish populations. This study surveyed current information on Caligus to identify global patterns of infestation and geographic distribution of these parasites in fish. Histomorphological and hematological disorders caused by Caligus were reported and discussed, as well as the chemotherapeutic agents used to control infestations. Caligus species are distributed in different countries and some particularities were identified and discussed.

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8- Synthesis of 4-(4-chlorophenyl)thiazole compounds: in silico and in vitro evaluations as leishmanicidal and trypanocidal agents

IRANILDO JOSÉ DA CRUZ FILHO, JAMERSON F. DE OLIVEIRA, ALINE CAROLINE S. SANTOS, VALÉRIA R.A. PEREIRA & MARIA CARMO A. DE LIMA

Neglected tropical diseases are a diverse group of communicable diseases that are prevalent mainly in tropical and subtropical regions. Thus, the objective of this work was to evaluate the biological potential of eight 4-(4-chlorophenyl)thiazole compounds. In silico tests were performed to evaluate the pharmacokinetic properties. in addition to these tests, antioxidant and cytotoxic activity in animal cells and antiparasitic activity were evaluated against different forms of Leishmania amazonensis and Trypanosoma cruzi in vitro. The results showed that the evaluated compounds present good oral distribution in in silico assays, promoting antioxidant activities, low cytotoxicity against mammalian cells and potential antiparasitic activities.  

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HEALTH SCIENCES

9- Evolution of the scientific literature on esophageal cancer from 1945 to 2020: a bibliometric analysis

EMELIN PAPPEN, ANA PAULA MORSCHBACHER, CAMILLE E. GRANADA, VERÔNICA CONTINI & JOÃO ANTONIO P. HENRIQUES

Esophageal cancer is the seventh most common type of cancer and the sixth most fatal type in the world population. The aim of this study was to provide a longitudinal view of the evolution of the scientific literature on esophageal neoplasia using bibliometric techniques. The Web of Science Core Collection database was used to investigate articles published in this area. The analysis of the chosen variables allowed to identify China as the country with the highest number of publications and to show that authors and institutions in Asia stand out for their intense production of scientific information on esophageal cancer.

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10- Current Pandemic in the World: Monkeypox from Past to Present

YASEMİN ŞAHİN, HANDE YÜCE, SONGÜL ÜNÜVAR & OSMAN ÇİFTÇİ

Monkeypox virus is an epidemic disease that appeared in many countries as of May 2022. The World Health Organization declared the current monkeypox outbreak a Public Health Emergency of International Concern on 23 July 2022. The current global spread of the virus, the availability of vaccines used, and the risk-benefit profile of antivirals are key strategy methods in the treatment of monkeypox. For effective treatment of monkeypox infection, interpersonal transmission routes, disease symptoms, factors following the course of the disease, prognosis, prophylactic treatment, pharmacological agents, and their effects should be determined.

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11- Prevalence of and risk factors for post-COVID: Results from a survey of 6,958 patients from Brazil

CAROLINA TALHARI, PAULO R. CRIADO, CAIO C.S. CASTRO, MAYRA IANHEZ, PAULO M. RAMOS & HÉLIO A. MIOT

Different symptoms have been reported after acute disease and labeled “post-COVID". In this study, 6,958 Brazilian people with confirmed COVID-19 diagnosis answered an online questionnaire. Among those, 10.8% required hospitalization, and 83.2% exhibited at least one post-COVID manifestation. Hair loss (49.4%), memory loss (40.7%), low attention (37.0%), fatigue (34.2%), anxiety (31.2%), and headache (29.6%) were the most reported manifestations. Pre-existing depression was associated with neuropsychiatric manifestations. Post-COVID manifestations were identified in most patients following COVID-19 infection, placing a supplementary burden on the healthcare system. Female sex, myalgia, anosmia, and more severe disease are risk factors for multiple post-COVID manifestations.

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12- Tocilizumab is effective in preventing ovarian injury induced by ischemia- reperfusion in rats

KEMINE UZEL, IGOR LAKHNO, CAN TURKLER, MEHMET KUZUCU, GULCE NAZ YAZICI, RENAD MAMMADOV, BAHADIR SULEYMAN, AHMET KALE & HALIS SULEYMAN

Ovarian torsion is disrupting both venous and arterial blood circulation. Effect of tocilizumab on ischemia-reperfusion is showed that: degeneration, necrosis, vascular dilatation/congestion, interstitial edema, hemorrhage, and polymorphonuclear lymphocyte (PMNL) infiltration scores were significantly different between the groups (p=0.001 for all parameters). Additionally, there was a considerable difference between OIRT and OIR groups in the number of primordial, developing, and atretic follicles groups (p<0.05). Stress markers or cytokines, such as MDA, tGSH, NF-κB, TNF-α, IL-1β, and IL-6, were significantly different between groups (p<0.05). Tocilizumab may be an alternative option for treating ischemia-reperfusion injury due to ovarian torsion.  

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13- Depression and anxiety among the University community during the Covid-19 pandemic: a study in Southern Brazil

HELENA S. SCHUCH, MARIANA G. CADEMARTORI, VALESCA D. DIAS, MATEUS L. LEVANDOWSKI, TIAGO N. MUNHOZ, PEDRO C. HALLAL & FLÁVIO F. DEMARCO

This study aimed to assess the mental health of a University community in South Brazil during the COVID-19 pandemic. A cross-sectional web-based survey was conducted between July-August 2020 through a self-administered questionnaire. All University staff and students were eligible. Depression was measured using the Patient Health Questionnaire-9 and anxiety by the Generalized Anxiety Disorder-7. To evaluate the effect of social distancing and mental health factors on outcomes, Poisson regression models with robust variance were performed, estimating Prevalence Ratios (PR) and 95% Confidence Intervals (95%CI). 2,785 individuals participated in the study. Prevalence of depression and anxiety were 39.2% (95%CI 37.3-41.1) and 52.5% (95% CI 50.6-54.4), respectively. Undergraduate students showed a higher prevalence of the outcomes. Not leaving the house routinely, mental health care, and previous diagnosis of mental illness were associated with both outcomes. Those with a previous medical diagnosis of depression had a 58% (PR 1.58; 95%CI 1.44; 1.74) and anxiety a 72% (PR 1.72; 95%CI 1.56; 1.91) greater prevalence of depression than their peers. An alarming prevalence of psychopathologies was observed. Despite the well-known benefits of social distancing to public health, it requires a surveillance on the population’s mental health, especially students and those with previous mental illness diagnosis.  

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14- Precocious evaluation of cardiovascular risk and its correlation with perinatal condition

WANDERSON R. OLIVEIRA, CLEUSA P. RIGO, ANNA R.O. FERREIRA, MAIARA V.G. RIBEIRO, MARIA N.C. PERRES & KESIA PALMA-RIGO

The Cardiovascular disease are the main cause of worldwide death, which is related with the cardiometabolic syndrome. Perinatal conditions are important risk factors to develop noncommunicable disease in adulthood. The low or high birth weight and caesarean delivery induce increased occurrence of cardiovascular risk biomarkers in children and adolescents; while feeding with breast milk from the birth until two years-old is a protector strategy. Evaluation of perinatal conditions associated with precocious identification of cardiovascular risk factors in childhood and adolescence is an efficient strategy to prevent and control cardiovascular mortality, through interventions, as lifestyle changes during vulnerable windows of development.

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CELLULAR AND MOLECULAR BIOLOGY

15- IFN-γ and IL-10: seric and placental profile during pig gestation Seric and placental cytokines in pig gestation

CAROLINA VÉLEZ, MARIÁNGELES CLAUZURE, DELIA WILLIAMSON, MIRTA A. KONCURAT & CLAUDIO BARBEITO

Early/late embryo/fetal loss is a very important problem in pig production, numerous studies have been conducted on the importance of cytokine expression during the different gestation periods. The aim of this work was to determined interferon-gamma and interleukin-10 concentration in maternal serum and in maternal and fetal porcine placental extracts from different gestation periods. Crossbred pig placental samples of 17, 30, 60, 70, and 114 days gestation and non- pregnant uteri were used. Analyzing the expression levels of these molecules, we found that both cytokines, interferon-gamma and interleukin-10, could have immunoregulatory roles during pig gestation.

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16- New lectin isolated from the tropical sponge Haliclona (Reniera) implexiformis (Hechtel, 1965) shows antibiofilm effect

FRANCISCO R.N. ANDRADE, PEDRO A.S. TABOSA, RENATO C.F. TORRES, RÔMULO F. CARNEIRO, MAYRON A. VASCONCELOS, ALEXANDRE L. ANDRADE, ELIELTON NASCIMENTO, ULISSES PINHEIRO, EDSON H. TEIXEIRA, CELSO S. NAGANO & ALEXANDRE H. SAMPAIO

Lectins are sugar-binding proteins found in all living organisms. Marine sponges represent a rich source of lectins with many interesting biological activities. In this work, we have isolated a new lectin form tropical sponge Haliclona implexiformis. This lectin, HiL, was able to recognize pathogenic bacterial strains and inhibit biofilm growth. Moreover, an in-deep biochemical characterization of HiL was achieved. Our results indicated that HiL is a new type of lectin with singular primary structure.   

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17- The bioprospecting potential of Clusia fluminensis Planch. & Triana: a scoping review

GISELLE M. FARIA, ANA PATRICIA A. LEMOS, MARIA C. ANHOLETI, SELMA R. PAIVA & LIDIA M.F. AMORIM

This manuscript  has identified antiviral, insecticidal and snake antivenom activities of this plant species from Brazilian biome. Recognized classes of bioactive secondary metabolites were identified distinct plant organs, thus suggesting an unexplored potential for this species, mainly recognized for its ornamental purposes. Special relevance of gathering the current knowledge available for Clusia fluminensis relies on the fact that the solid residue generated by plant pruning offers a sustainable source of phytochemicals of potential interest in cosmetic, nutraceutical, pharmaceutical and other industrial fields. 

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18- Nuclear Factor-Kappa B-induced miRNA-518a-5p represses trophoblast cell migration and invasion by the Nuclear Factor-Kappa B pathway

XING PENG, RUIRUI ZHANG, YUMEI ZHANG & CHUNYAN CAI

This study confirms the upregulation of miR-518a-5p in human preeclamptic placentas. NF-κB p52, p50, and p65 can bind to miR-518a-5p gene promoter. MiR-518a-5p further influences the levels of p50 and p65 but not p52. HTR8/SVneo cell viability and apoptosis were not influenced by miR-518a-5p. However, miR-518a-5p represses the migratory/invasive capacities of HTR8/SVneo cell and decreased gelatinolytic activity of MMP2 and MMP9, which was reversed by an NF-κB inhibitor. To sum up, miR-518a-5p is induced by NF-κB and represses trophoblast cell migration and invasion by the NF-κB pathway.

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19- Intra-genotypic variability in elite parent lines of papaya

ALEX S. RODRIGUES, HELAINE C.C. RAMOS, DANIEL P. MIRANDA, ADRIANA A.V. PIROVANI, RENATO SANTA-CATARINA, RAFAELA P. DUARTE, CATIANE S. BRAGA, DIEIMES BOHRY & MESSIAS G. PEREIRA

This paper reports the application of molecular markers to characterize papaya lines aiming to select genotypes with higher fixation index, seeking to promote the genetic purification of the lines. Intragenotypic variability was detected in JS-12 and Sekati lines, and absent for SS-72/12. The genetic variability detected in the two lines will be explored in order to adjust agronomic traits in already developed hybrids. About the fixation index, 293 genotypes showed maximum values.  The genetic variability coupled with the fixation index enabled the genotypes selection thereby contributing to the parent’s genetic purification.

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20- Multi-loci phylogeny and morphological evidence support the recognition of Januaria (Spermacoceae, Rubiaceae), a new monospecific genus endemic to the North of Minas Gerais (Brazil)

MARIELA NUÑEZ-FLORENTIN, JAVIER E. FLORENTÍN, ROBERTO M. SALAS, STEVEN DESSEIN & STEVEN B. JANSSENS

The main aim of this work was to present the description of a new monotypic plant genus of Rubiaceae (Spermacoceae, Spermacoce clade) that inhabits a peculiar region of Brazil. This plant was collected in Januária, Minas Gerais, within an area predominantly characterized by Caatinga (one of most threatened vegetation type in the world, and with high level of endemism). We performed morphological analyses of reproductive characters, and phylogenetic analysis based on molecular DNA data. The molecular position and morphological features (fruit dehiscence and pollen morphology) support this taxon as a new delimited genus, which is compared to other genera present in Brazil, through a taxonomic key.

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MICROBIOLOGY

21-  Biotechnological potential of microorganisms isolated from the salar del hombre muerto, Argentina

MARTA FLORENCIA LOPEZ, FABIANA LILIAN MARTÍNEZ, VERÓNICA BEATRIZ RAJAL & VERÓNICA PATRICIA IRAZUSTA

Extremophiles are microorganisms able to develop in inhospitable conditions; when the environment has high salinity, they are called halophiles and/or halotolerant. In this work, bacterial strains were isolated from soil and aqueous solution samples from the Salar del Hombre Muerto, in Northwest of Argentina. They were characterized macro and microscopically and the tolerance to sodium chloride was evaluated. A screening to search for molecules of biotechnological interest, such as carotenoids, emulsifiers and exopolysaccharides, and to assess the production of enzymes (including proteolytic, lipolytic, hemolytic, and catalase activities) was performed and 25 bacterial strains were selected for further studies" 

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22- Morphological and molecular characterization of Hysterothylacium spp. parasitizing Pomatomus saltatrix and Pagrus pagrus of the State of São Paulo, Brazil

THAISSA D. SERRANO, DIEGO H.M.D. VIEIRA, LARISSA S. PELEGRINI, LÚCIA V. FRAGOSO, BEATRIZ N. AGOSTINHO, MANUEL VERA, FÁBIO PORTO-FORESTI, RODNEY K. DE AZEVEDO & VANESSA D. ABDALLAH

Hysterothylacium spp. are parasitic nematodes of marine fish distributed worldwide, and many of their species have zoonotic potential. Specific identification is usually problematic, especially in the larval stage, and different tools for this purpose involving morphological and molecular characterization have been frequently used. Thus, this study carried out the morphological and molecular characterization of the L3 larval types of Hysterothylacium sp. collected in Pomatomus saltatrix and Pagrus pagrus from the Brazilian coast near Santos, SP. Two larval morphotypes were identified: Hysterothylacium type V and Hysterothylacium type X, recorded for the first time in these hosts and in Brazil. 

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23- Chemical composition and biological activities of the essential oils from Lippia alba and Lippia origanoides

LUIZ G.A. DOS SANTOS FILHO, RENATA B. DOS REIS, ANA SHEILA Q. SOUZA, KIRLEY M. CANUTO, EDY S. DE BRITO, KARINA N.C. CASTRO, ALITIENE M.L. PEREIRA & FÁBIO MENDONÇA DINIZ

The present study was aimed to investigate the chemical composition, antioxidant activity, acute toxicity and antimicrobial effects against Vibrio parahaemolyticus of essential oils extracted from Lippia alba and L. origanoides. The most predominant compounds in essential oils were geranial, limonene and neral in L. alba, and thymol, p-cymene and E-caryophyllene in L. origanoides. The essential oils have relevant antibacterial activity against Vibrio parahaemolyticus. The essential oils also show antioxidant potential estimated by 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assays. Both oils were classified as toxic to Artemia salina nauplii.  

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24- Constant testing for Pestivirus in cell lines reveals different routes of contamination

TATIANA F.P. DE OLIVEIRA, ANTÔNIO A.F. JÚNIOR, ANAPOLINO M. DE OLIVEIRA, MARCELO F. CAMARGOS & MARCOS B. HEINEMANN

Contaminations by Pestivirus and other viruses may occur at any time and regular assays of monitoring in cell cultures and your supplies are necessary. This study aimed to analyze the phylogeny of Pestivirus detected from cell cultures, calf serum, and standard strains of three laboratories in Brazil that carry out frequent tests for the monitoring of cellular contaminations. Pestivirus found in samples were Bovine viral diarrhea virus (BVDV-1 and BVDV-2), Hobi-like viruses (often named BVDV-3), and Classical swine fever virus (CSFV), and the phylogenetic analysis help us to infer at three possible routes of contamination in this work.

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25- Recent developments on the anti-Candida effect of amphotericin B combined with a second drug - a mini-review

DANIEL C. DE MORAES

Candida infections can be fatal, mainly in immunocompromised patients. Amphotericin B is the first-choice drug to fight these infections, but is toxic, especially to the kidneys. Using smaller concentrations of amphotericin B could decrease its toxicity. It would be possible by combining this drug to a second substance. In this study, it can be observed that several compounds can kill Candida when associated with amphotericin B, reinforcing the potential use of combined therapy to treat Candida infections.  

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26- In vitro manipulation of the bacterial community to improve the performance of bioflocs in aquaculture systems

JÉSSICA L.S. DA SILVA, ANA P.C. CARNEIRO, ANNA L.C. BRITO, ANA V.S. OLIVEIRA, JHONES L. VIEIRA, RAQUEL C. SOARES, ROBÉRIO M. DE FREITAS & OSCARINA V. DE SOUSA

The scientific article addresses relevant points for improving the use of suspended microbial aggregate technology, bioflocs, in aquaculture. Although biofloc technology is already recognized as advantageous for aquaculture for the effects of maintaining water quality and improving the health status and resistance of cultivated animals against pathogens, little is known about the way of action involved. Thus, the objective of the study was to evaluate the performance of bacterial groups as inducers in the formation of flocs in comparison to a system with spontaneous formation.  Through the research, we found that the systems that were added with consortia of bacteria showed promising results in relation to the control, showing more homogeneous flake formation, antimicrobial activity against the tested pathogens and greater biological diversity in the systems.    

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27- Comparative analysis of phenolic compositions and biological activities of three endemic Teucrium L. (Lamiaceae) species from Turkey

SEVIL ALBAYRAK & AHMET AKSOY

This is the first report on phenolic compositions, in vitro antioxidant and antimicrobial activities of three endemic Teucrium species (T. ekimii, T. pestalozzae and T. semrae) belongs to Turkish flora. The catechin, rutin, luteolin, apigenin chlorogenic acid, sinapic acid and rosmarinic acid in the extracts have been identified. Three endemic Teucrium species tested showed antioxidant and antibacterial activity. They may be potential sources of preservatives for use in the food and/or pharmaceutical industries.

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ECOSYSTEMS

28- Spatial structure and composition of invertebrates in high altitude rivers of the central Andes (Olaroz Salar, Argentina)

MARCELA A. DE PAUL & JUAN P. VILLAFAÑE

The structure of the invertebrate community and the physical chemistry of three rivers that flow into the north of the Olaroz salt pan (3900 – 4400 masl, Jujuy, Argentina) were analysed. The variables affecting the biological communities were: altitude, conductivity, turbidity, water temperature and hardness, oxygen and lead. High levels of arsenic and boron were identified. The registered species assemblage were common to the north-south Andean axis. However, the greatest similitude was registered between the Bolivian high Andean rivers and the rivers of the Altiplano of Catamarca, with increasing differences in composition and assemblage to south Andean rivers (Mendoza and Patagonia).

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29- Sudden and simultaneous population outbreak of Neoaulacoryssus speciosus in an urban area of 12 municipalities in the Caatinga biome

CLAUBERT WAGNER G. DE MENEZES, CONCEIÇÃO A. DOS SANTOS, DANIELLE M. CARVALHO, ELIANE S.G. BRITO, WAGNER DE S. TAVARES, SADY JÚNIOR M. DA C. DE MENEZES & JOSÉ C. ZANUNCIO

Neoaulacoryssus speciosus has been identified as the insect causing sudden and  simultaneous outbreaks in an urban area of 12 municipalities in the northern region of  Minas Gerais State in the Caatinga biome of Brazil, its female and male genitals  illustrated, its scientific classification revised and four common names listed for this  species. Deforestation and expansion of monoculture crops may have contributed to the  population outbreaks of N. speciosus in the northern region of Minas Gerais State. The  begining of the rainy season coincided with the N. speciosus population outbreak, characterized by high air temperatures and air relative humidities.

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30- Phenotypic plasticity in Copaifera langsdorffii Desf. in different forest fragments in São Paulo state, Brazil

MARCOS VINICIUS B.M. SIQUEIRA, GIOVANA HENRIQUE SILVÉRIO, JULIANA S. CARLOS, JAYÇA A.M. TOLEDO, CLEBER JOSÉ DA SILVA, JULIANA DE PAULA-SOUZA & NATÁLIA A. GALASTRI

Forest fragments are susceptible to environmental shifts and demands high phenotypic plasticity of the species growing in these areas. We study the phenotypic plasticity of Copaifera langsdorffii based on morphological and anatomical metrics of the leaflets from six forest fragments. The leaflets did not show qualitative differences, nonetheless, they demonstrated quantitative plasticity. Stomatal density, specific leaf area, palisade parenchyma and relative water content, indicated a high luminous, water and nutritional influence on the development of leaflets. The data provides evidence of the phenotypic plasticity which, although occurring in similar soils, showed significant quantitative differences in its morphoanatomical characters. 

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31- Structure of the metazoan parasite communities of haemulid fish (Actinopterygii: Perciformes) in the South Atlantic Ocean: a comparative approach

FABIANO PASCHOAL, ANDERSON D. CEZAR, FELIPE B. PEREIRA & JOSÉ L. LUQUE

Haemulidae represents one of the most diverse and widespread families of fish. From April 2009 to July 2012, we analyzed 120 specimens of Conodon nobilis, 60 Orthopristis rubra and 50 Anisotremus virginicus off Brazil to compare their metazoan parasite communities. The total parasite community was composed by 41 different taxa and the communities differed among the host species, i.e., O. rubra showed the highest values, followed by A. virginicus and Co. nobilis with intermediate and lowest values, respectively. Our findings reinforce that the parasitological knowledge pertaining to haemulid fish from South Atlantic are scarce and still needs to be improved.

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32- Spatial variation in the trophic category of fish assemblages in longitudinal stretches in a Neotropical reservoir

THIAGO D. GARCIA, BARBARA A. QUIRINO, LUCAS R. JARDULI, EDMIR D. CARVALHO & ANA PAULA VIDOTTO-MAGNONI

The construction of reservoirs in river courses aims to supply the growing demand for electricity for the human population, but can cause drastic changes in fish communities. Through the analysis of the feeding of 13 species of fish from the Chavantes Reservoir, located in the states of Paraná and São Paulo, we observed a variation in the food items consumed by most species along the reservoir. Species consumed small variety of resources, resulting in low values of niche breadth. We observed a low niche overlap between species, as a result of adaptation to the environment, associated with the age of this reservoir.

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33- Relationship between Payment for Ecosystem Services Programs and Disasters in Southeast Atlantic Forest region, Brazil

THIAGO S. ALMEIDA, PATRÍCIA TROVARELLI & KLÉCIA G. MASSI

Ecosystem services significantly contribute to ecosystems resilience and stability. Payment for ecosystem services can be designed and applied to prevent or decrease environmental disaster risks. This study aimed at verifying whether municipalities taking part in PES programs present higher number of natural disasters between 2009 and 2020 in the Paraíba do Sul river basin. We expected that municipalities having more disaster events would take part in more projects, which we found. We also expected PES calls target natural disaster prevention measures and actions, which we did not observe. There were no mentions of disasters in the PES calls.

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34- Acoustic partitioning explains the coexistence between two Physalaemus species (Anura, Leptodactylidae) in the Atlantic Forest in Eastern Bahia State, Brazil

HUGO S.N. BRAGA, MARCOS V.S.A. VIEIRA, TIAGO A.F. SILVA, AIRAN S. PROTÁZIO & ARIELSON S. PROTÁZIO

Here we investigate the niche interaction between the frogs Physalameus cuvieri and Physalaemus kroyeri. Both species preferred the same substrate and calling substrate, and showed low niche width values and high spatial niche overlap. The pseudocommunity analysis revealed absence of competition in space use. Ants and termites were the most important items in the diet of both species with the pseudocommunity analysis indicating absence of competition in the diet. The two species demonstrate a greater similarity in body proportions and a high overlap in the calling activity time. However, they showed divergence in the dominant frequency and call duration.

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35- Spatial characterization of factors inherent in the microendemism of the dwarf pequi tree (Caryocar brasiliense subsp. intermedium (Wittm.) PRANCE & M. F. Silva)

LEANDRO DA SILVA ALMEIDA, DENISE G. DE SANTANA & EDNALDO C. GUIMARÃES

The species Caryocar brasiliense Cambess., it is subdivided into two subspecies, one of arboreal size and the other shrub, popularly called dwarf pequizeiro. What is intriguing about the dwarf pequi tree is its extremely restricted spatial distribution, as it is found isolated in some ecological niches.  Geostatistics is a tool that can provide information for conservation and management programs for this subspecies.

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36- Diversity of non-marine mollusks in the southernmost Paranaense forest of the world

MICAELA DE LUCÍA, GUSTAVO DARRIGRAN & DIEGO EDUARDO GUTIÉRREZ GREGORIC

Biodiversity is affected by the increase in urbanization and environmental modifications. In this study, we cover the study of mollusks from a Nature Reserve in the province of Buenos Aires, Argentina, which is surrounded by large cities and is the southernmost relict of the Paranaense forest. Although there are isolated works on some species, no studies have been carried out that include all mollusks. We have registered 32 species, some for the first time for the Province of Buenos Aires and others for the first time for the Reserve. Among the non-natives, the presence of the invasive bivalve Limnoperna fortunei stands out.

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37- Diversity and abundance of terrestrial molluscs and their associated nematode fauna in urban kitchen gardens in the city of Rio de Janeiro, Brazil

KARINA L. DE OLIVEIRA, PAULO SÉRGIO RODRIGUES, DANIELE DECANINE & SUZETE R. GOMES

We evaluated the diversity and abundance of terrestrial molluscs in crops of two horticultural areas in Rio de Janeiro and their parasitic nematodes. We collected a total of 522 live mollusc specimens and identified 16 species from 10 different families. We compare our results among the different crops during spring and summer. Larvae of superfamily Metastrongyloidea, which includes nematodes that are a concern for public health and veterinary medicine, were found parasitizing the slug Sarasinula linguaeformis, in one area. Our results provide subsidies to generate health education actions and control of parasitic diseases transmitted by them.

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38- The iNaturalist platform as a source of data to study amphibians in Brazil

LUCAS R. FORTI & JUDIT K. SZABO

We review the current state of citizen science in Brazil though a case study of frog observations in iNaturalist, a global platform. Citizen-collected data is still underutilized for scientific analyses, particularly in Brazil. We highlight the potential use for these data and compare the completeness of the dataset to other countries. We found that citizen science can be an important source of biodiversity data, potentially contributing to distributional, behavioral and conservation studies. This topic is particularly relevant, as recent budget cuts and pandemic lockdown have made data collection and fieldwork difficult and in many cases impossible. 

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39- Effect of calcium chloride and gelling agents on the physicochemical and sensory characteristics of sugar-free banana preserves

ANA CLARA C. DIAS, LAIS CRISTINA S. BARBOSA, MICHAEL DOUGLAS M. GUIA, CLARA G. DA SILVEIRA, JULIANA C. BARCELOS, IZABELA S. DOS SANTOS, LUCIANA R. DA CUNHA & PATRÍCIA APARECIDA P. PEREIRA

Banana preserve is produced by mixing fruit with sucrose and organic acids. However, concerns about body esthetics or health reasons have encouraged the search for low-calorie products. Therefore, the objective of this study was to evaluate the effect of calcium chloride, carrageenan gum, and low methoxyl pectin on the physicochemical and sensory characteristics of sugar-free banana preserves using a central composite rotational design. Concentrations of CaCl₂ ranging from 0.54% to 0.61%, carrageenan gum ranging from 0.74% to 0.89% and LM-pectin ranging from 1.40% to 1.64% resulted in sugar-free banana preserves with ideal sweetness and consistency and were, therefore, more acceptable.

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40- Human presence as a determinant of the occurrence of mammals in a high diversity protected area of Cerrado-Caatinga ecotone in Brazil

ADRIELE A. PEREIRA, CLARISSA ROSA, LUCAS D.B. FARIA, LUCAS G. DA SILVA & MARCELO PASSAMANI

We used camera traps evaluate which factors influence the presence of mammal species in protected areas in Minas Gerais state. The findings indicate that areas closer to small urban settlements have a higher richness and number of records, particularly for generalist species with less specialization in diet and habitat use. The number of records for more specialist and large species, on the other hand, was low. As a result, species that are more tolerant of human presence and disturbance benefit from it. Therefor, it is critical that decision makers evaluate management strategies and conservation in these protected areas.

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41- Local ecological knowledge of fishers from southern and southeastern Brazil about the franciscana dolphin Pontoporia blainvillei: Strategies for conservation

SAMANTA C. DE ARAUJO, ANA PAULA M. DI BENEDITTO, CARLOS EDUARDO N. GATTS, SÉRGIO C. MOREIRA, CAMILA DOMIT, RENATA M. GAMA, AGNALDO S. MARTINS & CAMILAH A. ZAPPES

Accidental capture by fishing nets is the main threat to Franciscana dolphin in Southwest Atlantic Ocean (SWAO). This study compares local ecological knowledge (LEK) of fishers about this dolphin along the SWAO, Brazil. We interviewed 330 fishers in ten fishing communities and they recognize that bycatch is caused by gillnets from their fisheries. These fishers describe that usually discard carcasses in the sea but can use as bait for shark fishing or as food. In southern Brazil, fishers presented a better identification than fishers from southeastern. We propose co management actions to conserve the Franciscana dolphin in the SWAO.  

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42- Effectiveness of Federal Protected Areas in the Preservation of Mangrove Forests on the Coast of the State of Paraíba, Brazil

IARA S. MEDEIROS, SEBASTIÃO S. SANTOS, VANESSA A. REBELO, ISIS C. ALMEIDA, THALMA MARIA G. VELOSO, NADJACLEIA V. ALMEIDA & JOÃO C. G. BORGES

This study evaluated the effectiveness of Federal Protected Areas on the coast of the state of Paraíba (Brazil) with regard to the preservation of mangrove forests. The study area encompassed remaining mangrove forests distributed in four federal protected areas. The methods consisted of a spatiotemporal analysis considering the year of creation of each PA, with mapping and quantification as well as the assessment of impacts and effectiveness. Urban expansion, sugarcane monoculture, and shrimp farming represented the main negative impacts spatially identified in these PAs. The mangrove forests analyzed have continually suffered anthropogenic pressures since their creation as protected areas.  

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43- Structure, biomass, and secondary production of benthic macroinvertebrates in subtropical Andean rivers

GUILLERMO EDUARDO HANKEL, CAROLINA NIETO, FÁTIMA ROMERO, MARÍA LOURDES GULTEMIRIAN, MARÍA CELINA REYNAGA, MARÍA DE LOS Á. TABOADA, PAOLA ALEJANDRA R. MARTÍN, JOSÉ SEBASTIÁN RODRÍGUEZ, VERÓNICA MANZO & CARLOS MOLINERI

This study focuses on assemblage structure and secondary production of macroinvertebrates in three mountain rivers in Tucuman, northwestern Argentina. We aimed to describe the diversity of benthic macroinvertebrate assemblages, quantify their secondary production, and assess production distribution among taxa and functional feeding groups. We find a high diversity in the assemblages with Ephemeroptera being the most abundant taxa. The secondary production in all sites was lower than streams of template latitudes. Collectors-gatherers were the principal functional feeding group. The findings will aid in understanding the ecological functioning of mountain rivers and their potential use for commercial fishing or climate change monitoring.

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44- Spatial distribution and faunal composition of millipedes of the family Spirostreptidae Brandt, 1833 in the Brazilian Atlantic Forest (Diplopoda, Juliformia, Spirostreptida)

LUIZ F.M. INIESTA, RODRIGO S. BOUZAN & ANTONIO D. BRESCOVIT

The Atlantic Forest is known for its richness of species, but the diversity of millipedes is still poorly known. Herein, the faunal composition of Spirostreptidae (order Spirostreptida) in the biome is provided. A total of 159 occurrence points were compiled for 59 species. Gymnostreptus Brölemann, 1902 was recovered as the richest  genus, Plusioporus setiger (Brölemann, 1902) presented the highest number of records, and 35 species were recorded from only one municipality. This paper is important for our understanding of the Brazilian millipede fauna and can be useful to determine places that require valuations for collecting efforts and conservation policies.

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45- Morphologic and genetic variation within a relict Andean catfish, Hatcheria macraei, and its relationship with Trichomycterus areolatus and Bullockia maldonadoi
(Siluriformes: Trichomycteridae)

LEANDRO A. BECKER, MIGUEL A. BATTINI, JUAN P. BARRIGA, MARÍA M. AZPELICUETA, JERALD B. JOHNSON & VÍCTOR E. CUSSAC

The siluriforms Hatcheria macraei, Trichomycterus areolatus and Bullockia maldonadoi, considered relict species distributed southward and westward of the Colorado River, South America, have been subject to historical taxonomic and nomenclatural arrangements. We amplified a fragment of COI mtDNA from H. macraei and used publicly available Cytb mtDNA sequences of the three taxa, detecting a high genetic variation associated with river basins. Lineages previously assigned to T. areolatus showed a closer relationship to either B. maldonadoi or H. macraei,revealing new boundaries to their trans-Andean distribution. Body shape analyses of H. macraei unveiled great morphological variation among populations across their cis-Andean distribution

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GEOSCIENCES

46- 3D gravity modelling of areas under the aptian lakes in the Jatobá basin and Tucano Norte sub-basin – Negra and Tonã hills

RAFAEL P. LIMA, PAULO B. CORREIA, ROBERTO G. OLIVEIRA, ALEX S. MORAES & VIRGÍNIO HENRIQUE NEUMANN

Due to structural similarities and the possibility of connection between the two Aptian paleolakes in the Jatobá Basin and the Tucano Norte Sub-basin in North-eastern Brazil, the influence of the architecture of the crystalline basement under these lacustrine sedimentary rocks was analysed using gravimetric data near the faulted edges of the basins where the paleolakes are located. Depth maps and density models were generated that could be analysed from various 3D perspectives, and the behaviour of the crystalline basement below these sedimentary sequences was investigated.

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47- Monitoring river turbidity after a mine tailing dam failure using an empirical model derived from Sentinel-2 imagery

PEDRO L.B. CRIONI, ELIAS H. TERAMOTO & HUNG K. CHANG

The rupture of a mining tailings dam occurred in the municipality of Brumadinho, Minas Gerais, Brazil. Millions of cubic meters of mining tailings were dumped into the Paraopeba River. Occasionally, turbidity of the Paraopeba River exceeding 50,000 Nephelometric Turbidity Units [NTU]. Remote sensing is a well-established tool for quantifying spatial patterns of turbidity. Thus, this study aimed to develop an empirical model capable of producing turbidity estimates based on Sentinel-2 satellite images. A single-band empirical model was constructed using an exponential function with (R² of 0.91) to characterize and space-time variation of turbidity based on satellite observations of NIR reflectance.

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ANIMAL SCIENCE

48- Behaviour of personality-screened juvenile Oreochromis niloticus in different challenges: Bold fish present more exploratory capacity and learning to face imposed challenges

LUÍS G. FIGUEIREDO, FABIO A.C. SANTOS, ISABELA F.A. TORRES, TULIO P. BOAVENTURA & RONALD K. LUZ

Animal behavior and welfare is directly related to performance in farm animals. Animals can be classified in bold and shy, where bold fish can lead it to perform general tasks, such as looking for food, whereas shy individuals tend to reduce swimming activity and, consequently, reduce their exploratory behaviour. Oreochromis niloticus bold approached the object first in 65% of the trials, and shy approached first in 21.6% of the trials. Bold animals explored their environment faster in challenges, while shy individuals exhibited ability to learn from the challenges imposed in the study.

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49- Effect of environmental conditions on the changes of voltinism in three lines of Bombyx mori

GISELLE ZAMBRANO-GONZÁLEZ, MARTHA ALMANZA, MAURICIO VÉLEZ & XIMENA RUIZ-ERAZO

Research considered the differences on voltinism for Bombyx mori lineage taking into account the influence of biological and environmental variables. Growth under controlled conditions of temperature and photo-time, three lineages were used: one polyvoltine and two divoltine. Biological characters measured were: duration of larval period, weight of larvae at fifth day of V instar, weight rate, lifespan cycle, fertility rate, fertility and voltinism. Voltinism was calculated using a lineal regression model; to analyze biological variables a multiple regression; and to determine environmental conditions ANOVA was used. Results show that variables affecting voltinism are different on each lineage.

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50- Seasonal analysis of the diet and trophic niche breadth of Molossus rufus É. Geoffroy, 1805 (Mammalia: Chiroptera) in a tropical urban environment

PEDRO HENRIQUE B. MORAIS, HENRIQUE ORTÊNCIO-FILHO & ROSA MARIA DIAS

Several bats species in Brazil have adapted to live in urban areas. This study aimed to analyze the diet and trophic niche breadth of an insectivorous bat species very common in an urban environment in Southern Brazil, to compare the feeding habits between dry and rainy seasons. The analyses were made from fecal samples, in urban colonies, in the city of Maringá, State of Paraná and the results are present in the manuscript. 

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51- Short-term effects of α-melanocy-testimulating hormone in three distinct melanin-pigmented cell types of Anura

RODRIGO ZIERI, LILIAN FRANCO-BELUSSI & CLASSIUS DE OLIVEIRA

Amphibians possess melanin containing-cells in their skin. This cells, called melanophores, promote a rapid color change in the anuran's body as a result of background adjustment, under influence of MSH. Another curious feature is the presence of melanocytes, described in reproductive organs and the melanomacrophages, in hematopoietic organs. This internal melanin has exhibited responses under stressful factors as temperature, UV-radiation, pesticides and internal parasites, showing a protective role. Finally, we verified that these three types of melanin containing-cells are similarly responsive to the native hormone α-MSH, which enables us to treat them as a pigmentary system. 

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52- Redescription of the monotypic plant bug genus Paraneella and Paraneella amazonica Carvalho 1954, with a neotype designation (Heteroptera: Miridae).

EUGENIA MINGHETTI, SARA ITZEL MONTEMAYOR & PABLO MATÍAS DELLAPÉ

The monotypic Neotropical eccritotarsine genus Paraneella Carvalho (Heteroptera: Miridae) and its only included species, Paraneella amazonica Carvalho 1954, are diagnosed and redescribed, and new characters for their recognition are provided, illustrated, and photographed. Paraneella amazonica, previously known from the type locality in Brazil, is reported for the first time from Ecuador and a neotype is designated. A key to the genera of the Neella-Neoneella complexbased on a new set of characters, which are photographed and illustrated, is provided.

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53- Hydra-Amoeba system: a double infection with a lethal ending

MARIA I. DESERTI, JACOB LORENZO-MORALES & FABIÁN H. ACUÑA

This work presents the first record of a double amoebiasis in the genus Hydra: in two concatenated infectious periods, Hydramoeba sp. and Acanthoamoeba sp. unchain a series of anatomical lesions in polyps collected in three lagoons in the province of Buenos Aires, Argentina. In all cases they caused death by total disintegration. This finding becomes important at the health level due to the appearance of Acanthoamoeba sp. in waters associated with human recreational activities. For the genus Hydra, the importance lies at an ecological and evolutionary level, considering the possible impact on their natural populations.

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54- Review of the genus Euantha Wulp, 1885 (Diptera: Tachinidae), with key to species and redescription of E. pulchra Wulp, 1891

MARCELO D. SANTIS & SILVIO S. NIHEI

Euantha Wulp is a New World genus in the tribe Sophiini (Dexiinae). It includes three species: E. interrupta Aldrich, 1927, E. litturata (Olivier, 1811) and E. pulchra Wulp, 1891. This last species is poorly known, being restricted mostly to catalogues since its original description. Here E. pulchra is redescribed, a lectotype is designated and the male is diagnosed for the first time. In addition, to new recorded from Guatemala. Finally, the first key to include all the species of Euantha is provided.

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CROP SCIENCE

55- Site classification for Eucalyptus sp. in a tropical region of Brazil

ATAÍDES M. FILHO, SYLVIO P. NETTO, SEBASTIÃO A. MACHADO, ANA P.D. CORTE & ALEXANDRE BEHLING

Site index is strongly correlated to growth factors and volume yield. It is also influenced by density and treatments like thinning. This research was conducted to generate productivity classes, applying three methods (GC, ADA, and GADA) to estimate site curves for Eucalyptus sp. in a tropical region of Brazil, using permanent sample plots annually measured between 2011–2014, and the application of geostatistics to classify the cartographic bases of the plantations. GADA approach provided the best statistical  results with improvement of 12,23%  and 39,80% on the ADA and GC methods, respectively.

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SOIL SCIENCE

56- Chemical properties of Oxisol cultivated with corn in management systems of soil irrigated with swine production wastewater

REBYSON B. GUIDINELLE, OTACILIO JOSÉ P. RANGEL, RENATO R. PASSOS, JULIO CEZAR M. BAPTESTINI & ANDRÉ O. SOUZA

The article presented is the result of research carried out in the field where two soil management systems were evaluated, no-tillage and conventional planting systems, irrigated with five depths of with swine wastewater, during two corn crop cycles. The integration of these strategies is essential to improve soil quality and reduce water and fertilizer consumption in agriculture. The results obtained in this study are of great importance for society, as they serve as a reference for the competent bodies in establishing technical criteria for the use of swine wastewater in agriculture, without compromising the integrity of the soil.

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FORESTRY SCIENCE

57- Combining ALS and UAV to derive the height of Araucaria angustifolia in the Brazilian Atlantic Rain Forest

ERNANDES M. DA CUNHA NETO, HUDSON F.P. VERAS, MARKS M. MOURA, ANDRÉ L. BERTI, CARLOS R. SANQUETTA, ALLAN L. PELISSARI & ANA PAULA D. CORTE

Our study aims to verify the viability of using heights measured with remote sensors in the forest inventory for native forests, since with the hypsometers use the obtention of this variable is complicated, given the difficulty of visualizing the canopy and the trees’ basis. We apply the heights estimated by the sensors in the equations of volume and carbon stock combined with the diameter measured in the field. We believe that instead of measuring the height of trees with hypsometers, we can measure only the diameter and use the height derived from the remote sensor.

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ENGINEERING SCIENCES

58- Simulation of a single spherical droplet drying considering shrinking and temperature profiles: first drying stage

DIEGO H.S. CHAVES, VIVIANE S. BIRCHAL & ESLY F. COSTA JR

A model involving simultaneous droplet heating and water evaporation is proposed to simulate temperature, shrinking and mass profiles of a spherical droplet subjected to convective drying. Experimental data on drying skim milk and colloidal silica was used, but there were no significant differences observed concerning the droplet components. The initial heating time of the particle upon reaching the constant temperature is relatively short, and discrepancy between simulated and experimental values did not exceed 9% 9% for skim milk and 7% for colloidal silica. Whitaker correlation evaluated at the film temperature showed better results. Small discrepancy found and some improvements are proposed.

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59- Rheological parameters of mixed Brazilian Cerrado fruits sugar-free preserves: the effect of body agents

TAÍSA R.T. FARIAS, MARIA CECÍLIA E.V. SCHIASSI, PATRÍCIA A.P. PEREIRA, VANESSA R. DE SOUZA, AMANDA M.T. LAGO, SORAIA V. BORGES & FABIANA QUEIROZ

The development of mixed preserves could increase population access to the Brazilian Cerrado fruits as marolo, soursop, and sweet passion fruit. In addition, sugar-free preserves are a viable alternative for adding value to the product and satisfy all the consumers. Considering that the rheological behavior of foods directly influences their acceptability and processing, there is a need to understand the impact of adding bodily agents (erythritol, sorbitol, xylitol, and polydextrose) to the final product. Thus, the preserves can be developed in order to obtain the parameters that meet the consumer’s sensorial acceptance, according to which is desired and available in the market.

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60- Econometric model of iron ore through principal component analysis and multiple linear regression

BÁRBARA ISABELA DA SILVA CAMPOS, GISELE C.A. LOPES, PHILIPE S.C. DE CASTRO, TATIANA B. DOS SANTOS & FELIPE R. SOUZA

Price of iron ore is affected by instabilities of microeconomic balance between supply and demand. This research aims to evaluate the market variables capable of influencing the price of iron ore through multivariate statistical techniques. Principal component analysis and multiple linear regression were used. First three components explained 89.12% of the variability of the data matrix. Multiple linear regression highlighted the significance of five variables. They are export iron ore from Brazil, steel production from China, price of coal, steel production from India and price of steel.

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61- Infrared quantification of binary rubber blends with overlapping bands

ALEXANDRA HELENA DE BARROS, LIDIA M.S. MURAKAMI, RACHEL F. MAGALHÃES, MARCIA M. TAKEMATSU, MILTON F. DINIZ, NATÁLIA B. SANCHES, JORGE CARLOS N. DUTRA & RITA DE CÁSSIA L. DUTRA

Quantification of elastomer content for the ethylene-propylene diene monomer/polybutadiene blend are seldom subjects in the literature, mainly due to rubber compatibility problems. Infrared spectroscopy can quantify this type of blend even if some bands overlap, which can be resolved with the proper choice of spectrum obtaining mode and non-overlapping bands. This study evaluates this blend quantification by different infrared modes. The conventional mode by transmission provided better accuracy. The sample with the higher BR content provided the best result. The developed methodologies provided an accurate determination of low EPDM contents. The methodology is simple and suited for the rubber industry.

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SOCIAL SCIENCES

62- Scientific evolution of Corporate Social Responsibility. A bibliometric analysis with mapping analysis tools

SANDRA ESCAMILLA-SOLANO, JESSICA PAULE-VIANEZ, PAOLA PLAZA-CASADO & SUSANA DÍAZ-IGLESIAS

Today the term Corporate Social Responsibility (CSR) have multiple concepts: Corporate Social Responsibility, Social Responsibility, Sustainable Development or Sustainability, there is not a consensus theory. The objective of this study is to obtain a better understanding of the current situation and trends in this area of research. In this paper, bibliometrics are used to evaluate performance and productivity in CSR and scientific maps to extract and classify the most important research topics. The results show the conceptual evolution of CSR research, the growth potential and great development, being the main areas: Financial Performance, Corporate Reputation, Ethics, Consumers, Employees and Risk

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63- Funding as a determinant of Citation Impact in Scientific Papers in different countries

CONCEPTA MCMANUS, ABILIO AFONSO BAETA NEVES, JOSÉ ALEXANDRE DINIZ FILHO, FELIPE PIMENTEL & DANIEL PIMENTEL

Paths from funding to citation impact were constructed. Countries that invest relatively less in Research and Development tend to show lower investment by businesses and publish fewer documents. Countries develop different strategies to increase impact. Those in the lowest investment group show higher international collaboration and publications in Open Access Journals.   This leads to a higher impact but below those countries with the highest investments.  While international collaboration appeared in several clusters, the % of papers in the Top journal quartile was important for almost all clusters.  More investments and open access do not necessarily lead to high impact.  

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64- Evolution of water governance systems in agriculture in developing countries and proposals for improvement. The case of the Hermosillo Coast, Mexico

JUAN F. VELASCO-MUÑOZ, CLAUDIA A. OCHOA-NORIEGA, ISABEL M. ROMÁN-SANCHEZ & BELÉN LÓPEZ-FELICES

This paper aims to study the determinants of the governance model of water resources in the agriculture of the Hermosillo-Coast (Mexico). To achieve this objective, a literature review, in-depth interviews and a workshop were carried out. The results show that the main threats to the system come from the model of granting concessions for access to water resources, the lack of supervision by the competent authority and the control of a group of stakeholders over water in relation to the rest of the interested parties. Finally, measures aimed at improving the sustainability of agricultural activity in the area are proposed.

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65- Androcentrism in the scientific field: Brazilian systems of graduate studies, science and technology as a case study

ROBERTA ARÊAS, ALICE ABREU, CARLOS NOBRE, MARCIA C. BARBOSA & ADEMIR E. SANTANA

The main goal of this work is to identify the process of misogyny in science by describing its reproductive pattern. Our results show that women are around 50% of the undergraduate and graduate students when all fields are taken into consideration, but only 37% of the researchers in the CNPq system. We also observe a significant increase in female percentage within scientific activities at the initial and intermediary levels, except for the most prestigious areas as hard science. However, a scissor effect is identified between the initial level and the more prominent positions. This unbalanced participation reveals that female occupations in science are mostly as lower workforce since women are quite far from the social decision-making circles in this career

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All abstracts of the publications were provided by the respective authors.

Annals of the Brazilian Academy of Sciences
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