Brazilian Journal of Biology最新文献

{"title":"RETRATAÇÃO PARCIAL - Mapping of quality parameters of pre-processed corn, soybean and sorghum grains [texto retratado].","authors":"","doi":"10.1590/1519-6984.302959re","DOIUrl":"10.1590/1519-6984.302959re","url":null,"abstract":"<p><p>[This retracts the article doi: 10.1590/1519-6984.302959].</p>","PeriodicalId":55326,"journal":{"name":"Brazilian Journal of Biology","volume":"86 ","pages":"e302959re"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148152289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of the endocannabinoid system in teleostei fish physiology: implications for reproduction and environmental interactions.","authors":"Eliana Ibáñez-Arancibia, Elías Figueroa Villalobos, Jorge G Farías","doi":"10.1590/1519-6984.293527","DOIUrl":"10.1590/1519-6984.293527","url":null,"abstract":"<p><p>The endocannabinoid system (ECS) represents a vital neurotransmitter network in vertebrates, regulating neurogenesis, cognition, lipid metabolism, and immune activity. One of the vertebrates used for studying the endocannabinoid system is fish, specifically the species Danio rerio, known as zebrafish, due to its similarities with vertebrate development. This review explores the ECS in teleost fishes, emphasising its role in reproductive physiology and its interaction with environmental pollutants. Although extensive research has elucidated the ECS in mammals, limited data exist for teleosts. The literature revealed that endocannabinoids in Teleostei have an essential role in lipid metabolism, with effects revealed mainly in the brain and liver involving gene expression processes that regulate these metabolic pathways. Another key role of the endocannabinoid system in fish is in reproduction, as lipid metabolism directly influences gonadal function. Environmental pollutants, such as bisphenol A and phthalates, also disrupt ECS function, impairing reproductive performance and metabolic stability. These findings underscore the need for further studies on teleost-specific ECS mechanisms and their implications for aquatic ecosystems.</p>","PeriodicalId":55326,"journal":{"name":"Brazilian Journal of Biology","volume":"86 ","pages":"e293527"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148152315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enterobacteriaceae contamination in raw chicken meat from Amazonas, Brazil: implications for food hygiene.","authors":"A B A Amorim, A N A Santos, M M Campelo, A S A Amorim, S M Santos, A L Lopes Junior, P H R Aride, A T Oliveira","doi":"10.1590/1519-6984.305490","DOIUrl":"10.1590/1519-6984.305490","url":null,"abstract":"<p><p>Raw chicken meat is widely consumed and serves as an important vehicle for foodborne pathogens when hygienic-sanitary controls at the retail level are insufficient. This cross-sectional study evaluated the occurrence of Enterobacteriaceae in 88 raw chicken meat samples collected from supermarkets, butcher shops, and street fairs across the four urban zones of Manaus, Amazonas, Brazil, between June and September 2025. Detection of Salmonella spp. was performed according to ISO 6579-1:2017, followed by biochemical identification of Salmonella spp., Escherichia coli, and other Enterobacteriaceae, including Citrobacter freundii, Proteus spp., and Shigella spp. Salmonella spp. was detected in 32.9% of samples, E. coli in 42.0%, and other Enterobacteriaceae in 11.4%. Higher contamination frequencies were observed in samples sold at room temperature and in street fairs, which exhibited poorer hygienic-sanitary conditions, whereas supermarkets generally showed lower contamination rates and better adherence to cold chain and hygiene practices. No significant differences were observed among chicken cuts or urban zones. Hygienic-sanitary assessments of 49 retail establishments revealed inconsistent use of personal protective equipment, inadequate cleaning of surfaces and utensils, and the presence of synanthropic vectors. These findings highlight the potential public health risks associated with raw chicken sold in informal retail settings in Amazon and emphasize the need for strengthened sanitary surveillance, improved vendor training, and targeted educational interventions to reduce consumer exposure to foodborne pathogens.</p>","PeriodicalId":55326,"journal":{"name":"Brazilian Journal of Biology","volume":"86 ","pages":"e305490"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148152247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental impacts caused by the mining operation at the stone pit of gravels San Pedro, Granma, Cuba.","authors":"J C F Atiencia, T T Sabatela, O B Fuentes, E R Céspedes, C A O Guaycha, C N L Rosero, D G Almeida","doi":"10.1590/1519-6984.303311","DOIUrl":"10.1590/1519-6984.303311","url":null,"abstract":"<p><p>Mining activity in Granma Province has gained strategic relevance following the implementation of the National Program for the Local Production of Construction Materials. Within this framework, mineral deposits previously considered of low economic value have become viable resources for both state-owned and non-state producers of construction materials. The San Pedro deposit, located in Granma Province, is currently exploited by open-pit mining, which generates significant environmental impacts and highlights the need for adequate environmental management. The aim of this study was to determine the environmental impacts caused by the mining activity at the San Pedro deposit and to develop a mitigation plan to reduce its negative effects. The Environmental Impact Assessment methodology established in the guidelines for Environmental License applications was applied. The methodological procedure consisted of seven stages that allowed the identification and classification of the main environmental impacts generated by the mining activity. The results made possible to identify the most significant environmental impacts produced during the different phases of aggregate extraction and processing, as well as their interaction with the environmental components of the study area. Based on this analysis, a set of mitigation and corrective measures was proposed to improve environmental management and ensure adequate control of environmental factors within the project area and its surroundings.</p>","PeriodicalId":55326,"journal":{"name":"Brazilian Journal of Biology","volume":"86 ","pages":"e303311"},"PeriodicalIF":0.0,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148152229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anticoagulant, antioxidant and cytotoxic potential of cinnamic acid and derivatives.","authors":"P E A Oliveira, D P Silva, S S Ferreira, D P Marchi-Salvador, A A Oliveira Filho","doi":"10.1590/1519-6984.303373","DOIUrl":"10.1590/1519-6984.303373","url":null,"abstract":"<p><strong>Introduction: </strong>Since antiquity, natural products have been widely used to relieve symptoms and prevent numerous diseases. Early treatments for vascular disorders, including thrombosis, relied heavily on plant-derived substances, which later served as prototypes for the development of platelet aggregation inhibitors and coagulation-modulating agents. Among these bioactive constituents, phenolic compounds-abundantly found in various botanical sources-have gained prominence due to their well-established antioxidant properties and reported anticoagulant effects. Recent studies highlight that the structural diversity of phenolic acids, particularly cinnamic acid (CA) and its derivatives, offers a valuable chemical scaffold for developing new therapeutic agents targeting thrombogenesis and oxidative imbalance.</p><p><strong>Objective: </strong>This study aimed to evaluate, in vitro, the pharmacological (anticoagulant and antioxidant) and toxicological (oxidant and cytotoxic) activities of cinnamic acid (CA) and five synthetic derivatives-4HDCN, 4MTCN, 3,4DHCN, 3,4DMCN, and 3H4MCN.</p><p><strong>Methods: </strong>Anticoagulant activity was assessed using a semi-automated coagulometer by measuring clotting time after exposure of human plasma to each molecule. Antioxidant, oxidant, and cytotoxic (hemolytic) activities were determined using human erythrocytes from blood groups A, B, and O. Oxidative and antioxidant responses were quantified by spectrophotometry following exposure to phenylhydrazine as a pro-oxidant inducer. Hemolysis was evaluated at concentrations ranging from 0 to 400 mg/dL.</p><p><strong>Results: </strong>In the anticoagulant assays, the derivative 3,4DHCN exhibited the strongest activity, prolonging clotting time to 176.6 s, slightly surpassing 3,4MTCN (165.6 s). All molecules demonstrated low or negligible oxidizing activity (<7.1%). Regarding antioxidant potential, 4MTCN showed the most effective protection against phenylhydrazine-induced oxidation, reducing oxidative damage to 8.7%. None of the tested compounds induced moderate or high hemolysis at concentrations up to 200 mg/dL. However, at 400 mg/dL, CA and 4HDCN produced high hemolytic rates across erythrocyte types. In type A cells, hemolysis reached 89.4% (CA) and 76.0% (4HDCN); in type B, 64.3% and 60.5%; and in type O, 90.1% and 70.7%, respectively.</p><p><strong>Conclusion: </strong>Dihydroxylated and dimethoxylated cinnamic acid derivatives demonstrated notable anticoagulant activity, minimal oxidative effects, low antioxidant capacity, and an absence of cytotoxicity in human erythrocytes at therapeutically relevant concentrations. These findings indicate that such molecules represent promising candidates for the development of new anticoagulant agents with favorable safety profiles.</p>","PeriodicalId":55326,"journal":{"name":"Brazilian Journal of Biology","volume":"86 ","pages":"e303373"},"PeriodicalIF":0.0,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148152239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Agronomic responses of rice to putative polyploid-inducing plant extracts: a screening study.","authors":"Isnawati, A L Adiredjo, M Roviq, R Sarno, F Taufany, K R Sungkono, S Zubaidah, Y Mulyati, R A Arista, S D Prastyaningtias, F I Muhaimin, R Diana, F Farapti, M Z Afnan","doi":"10.1590/1519-6984.300957","DOIUrl":"10.1590/1519-6984.300957","url":null,"abstract":"<p><p>Rice productivity improvement is an urgent priority to secure food availability in Indonesia, and polyploid induction using antimitotic compounds provides a promising strategy. This study evaluated agronomic responses of four rice genotypes (Cibogo, F4 Sb × Cb, F4 Sb × Ch, and Ciherang) following in vivo seed soaking with natural antimitotic extracts from Gloriosa superba, Catharanthus roseus, and Elephantopus scaber at varying concentrations. Seeds were treated with standardized antimitotic solutions and key traits-tiller number, plant height, panicle production, leaf number, panicle weight, and stomatal characteristics-were assessed. The results revealed clear genotype-specific and dose-dependent responses. The 10% G. superba treatment consistently enhanced tiller formation, plant height, and panicle production across most genotypes, and produced \"giant rice\" phenotypes in F4 Sb × Cb. Cibogo showed the heaviest panicles under 10% E. scaber and 15% G. superba, while Ciherang performed best at lower doses, particularly 5% C. roseus and 5-10% G. superba. In contrast, stomatal density and size remained relatively stable, indicating that stomatal traits are not reliable standalone markers of polyploidization. Collectively, these findings highlight the agronomic potential of G. superba-particularly at ~10%-as a candidate natural antimitotic extract to improve yield-related traits. However, because direct cytological verification (e.g., flow cytometry and/or chromosome counting) was not performed in this study, the observed responses should be interpreted as polyploid-like or putative outcomes that require validation in future work.</p>","PeriodicalId":55326,"journal":{"name":"Brazilian Journal of Biology","volume":"86 ","pages":"e300957"},"PeriodicalIF":0.0,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148152250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reproductive phenological patterns of a Restinga community in Northeastern Brazil.","authors":"V B Ramos, R O Araujo, L F Pinheiro, S G Jacinto Junior, Y C Lima, A V D Pontes, A P Silveira, E M P Lucena","doi":"10.1590/1519-6984.304449","DOIUrl":"10.1590/1519-6984.304449","url":null,"abstract":"<p><p>The state of Ceará is classified into 11 phytoecological units, one of which is the Coastal Zone Vegetation Complex, which comprises the vegetation of the São Gonçalo do Amarante Botanical Garden. Considering the scarcity of phenological studies in the region and the environmental threats faced, it is essential to understand the behavior of the local flora. Given the above, the objective was to characterize the reproductive phenological patterns of the São Gonçalo do Amarante Botanical Garden. To analyze the reproductive phenological patterns, circular histograms were prepared in the ORIANA 4 software with the data obtained from herbaria, and the Spearman correlation test (rs) was performed to verify the correlation between the meteorological variables and the phenophases. A total of 245 herbarium specimens of 150 species collected between 2015 and 2019 were recorded and made available in the herbarium of the Ceará Natural History Museum Prof. Dias da Rocha and on the SpeciesLink platform. The Rayleigh test indicated seasonality for flowering (r = 0.946) and fruiting (r = 0.985) with the average dates occurring, respectively, in March and February, that is, in these months there is a greater probability of finding phenophases. Due to the observed seasonality, there was no record of reproductive phenological events in some months of the year. Neither reproductive phenophase showed any correlation with the meteorological variables of precipitation and temperature. A monthly calendar was prepared with data from the herbaria with the respective species, their popular names, flowering and fruiting periods, allowing to assist in future research with collection of reproductive material.</p>","PeriodicalId":55326,"journal":{"name":"Brazilian Journal of Biology","volume":"86 ","pages":"e304449"},"PeriodicalIF":0.0,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148152265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of land suitability and potential production of sorghum (Sorghum bicolor L.) as a biomass energy crop in West Sumatra, Indonesia.","authors":"Juniarti, D P Sari, A Sari, N Sandi, Yusniwati, A Agustar, M A Sefano","doi":"10.1590/1519-6984.297938","DOIUrl":"10.1590/1519-6984.297938","url":null,"abstract":"<p><p>Research findings establish sorghum as an ideal choice for enhancing the productivity of arid, acidic, or otherwise unproductive lands, including reclaimed former mining areas. Sorghum serves as an alternative food ingredient, containing high levels of carbohydrates and calories, making it a viable solution for food security and biomass energy challenges. A study on sorghum cultivation in West Sumatra, Indonesia, reports yields of approximately 8 t ha-1, with wheat seeds produced at a rate of 10 t ha-1. The outcomes of these sorghum plantations include processed products such as flour and sugar derived from sorghum stems. By assessing land characteristics suitable for sorghum development as a biomass energy crop in West Sumatra, this research aims to promote the sustainable growth of sorghum cultivation in the region. This research aims to evaluate the suitability of land for sorghum (Sorghum bicolor L.) in West Sumatra, Indonesia, using purposive sampling and survey methods. To assess land suitability, a quantitative model from the Food and Agriculture Organization (FAO) is employed, which combines environmental data, climate, and the physical and chemical characteristics of the land. The estimation of Radiation Thermal Production Potential (RPP) is conducted, with each data point measured (rated) individually and incorporated into several mathematical formulas. Subsequently, the potential production of land based on climate, referred to as Climate Production Potential (CPP), is quantitatively determined. By modifying specific variables within this model, it can accurately predict the outcomes of sorghum cultivation in various regions. By inputting actual data on land plant production, this model can forecast the real plant production potential of the land, known as Land Production Potential (LPP). The West Sumatra region is classified as S1 land suitability, indicating it is highly suitable for growing sorghum. The potential actual sorghum production in West Sumatra, Indonesia, is estimated at 5 t ha-1, which exceeds the current levels of sorghum production. The results indicated that the land in West Sumatra, Indonesia, has potential for the development of sorghum plants, characterized by an average temperature of 25-27 °C, rainfall of less than 200 mm, air humidity below 75%, good drainage, soil depth greater than 60 cm, and a pH range of 4.4 to 6.1.</p>","PeriodicalId":55326,"journal":{"name":"Brazilian Journal of Biology","volume":"86 ","pages":"e297938"},"PeriodicalIF":0.0,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148152356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-invasive detection and molecular confirmation of coccidia in free-ranging wild birds on Maranhão Island, northeastern Brazil.","authors":"A C L Cavalcante, M S C Oliveira, L S S Ribeiro, F B Silva, D P Chaves, J G Pereira, A I L Lima-Ribeiro, A L P Silva, N S Oliveira, I R Negreiros","doi":"10.1590/1519-6984.300136","DOIUrl":"https://doi.org/10.1590/1519-6984.300136","url":null,"abstract":"","PeriodicalId":55326,"journal":{"name":"Brazilian Journal of Biology","volume":"86 ","pages":"e300136"},"PeriodicalIF":0.0,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148152312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Classification of food security status in disaster-prone areas: a comparative analysis of machine learning models using Support Vector Machine, Random Forest, and Logistic Regression.","authors":"R Sukmawani, S A Andayani, M F Nainggolan, N E Salehah, E Tri Astutiningsih","doi":"10.1590/1519-6984.305154","DOIUrl":"10.1590/1519-6984.305154","url":null,"abstract":"<p><p>Food security assessment in disaster-prone areas requires accurate and adaptive approaches capable of capturing dynamic production-consumption relationships. This study aims to develop and evaluate machine learning-based classification models for determining regional food security status using a Food Security Index (FSI), defined as the ratio of local food production to annual consumption requirements with an added safety buffer. Three algorithms were compared: Support Vector Machine (SVM), Random Forest (RF), and Logistic Regression (LR). Model performance was evaluated using k-fold cross-validation and assessed through accuracy, precision, recall, F1-score, and confusion matrix analysis. The results show that SVM achieved the highest and most consistent performance, with accuracy ranging from 92% to 96%, precision of 0.93, recall of 0.94, and an F1-score of 0.93. Random Forest demonstrated moderately strong performance (accuracy: 88-92%; F1-score: 0.87), while Logistic Regression exhibited the lowest performance (accuracy: 80-85%; F1-score: 0.80), indicating its limitation in modeling non-linear relationships. Confusion matrix analysis reveals that SVM maintains stable classification across all validation folds with minimal misclassification, whereas errors in all models are predominantly concentrated in regions with FSI values near the classification threshold (FSI ≈ 1), highlighting the challenge of boundary-sensitive cases. Substantively, the integration of production-consumption ratios with buffer reserves in the FSI effectively captures both food availability and system resilience, distinguishing surplus regions (FSI ≥ 1) from structurally vulnerable regions (FSI < 1). These findings confirm that SVM is the most suitable approach for food security classification in disaster-prone areas due to its ability to model non-linear patterns and optimize decision boundaries. This study provides a robust and scalable framework for data-driven food security monitoring and early warning systems. The results support the use of SVM-based classification to enhance the accuracy of vulnerability detection and to improve the targeting of policy interventions in disaster-prone regions.</p>","PeriodicalId":55326,"journal":{"name":"Brazilian Journal of Biology","volume":"86 ","pages":"e305154"},"PeriodicalIF":0.0,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148152264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}