Anais da Academia Brasileira de Ciencias最新文献_第2页

Chemical prospection on the Antarctic moss Sanionia uncinata (Hedw.) Loeske, Amblystegiaceae and its relationship with biological activity and the altitude. A pilot study. 南极苔藓Sanionia uncinata （hew .）的化学展望文章标题：羊菖蒲科植物及其与生物活性和海拔的关系。一项初步研究。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-09-22 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241371

Amanda L S Teodoro, Marcelo Henrique S Ramada, Mateus Luís B Paciencia, Stephan M Dohms, Paulo Eduardo A S Câmara, Antonio D Varella, Sergio Alexandre Frana, Marcelo José P Ferreira, Cintia Helena C Saraceni, Karen Cristina C Maldonado, Ivana B Suffredini

{"title":"Chemical prospection on the Antarctic moss Sanionia uncinata (Hedw.) Loeske, Amblystegiaceae and its relationship with biological activity and the altitude. A pilot study.","authors":"Amanda L S Teodoro, Marcelo Henrique S Ramada, Mateus Luís B Paciencia, Stephan M Dohms, Paulo Eduardo A S Câmara, Antonio D Varella, Sergio Alexandre Frana, Marcelo José P Ferreira, Cintia Helena C Saraceni, Karen Cristina C Maldonado, Ivana B Suffredini","doi":"10.1590/0001-3765202520241371","DOIUrl":"https://doi.org/10.1590/0001-3765202520241371","url":null,"abstract":"Twenty-four ethanolic extracts obtained from the Antarctic sickle-leaved-hook-moss <italic>Sanionia</italic> <italic>uncinata </italic>were tested for their chemical profile by gas chromatography-mass spectrometry, revealing the presence of fatty acids and their metabolites, diterpene, triterpene, and four steroids. Canonical correspondence analysis (CCA) indicated a significant correlation between the metabolite content and biological activities as antibacterial, β-carotene and diphenyl-picryl-hydrazyl DPPH antioxidant, cytotoxicity to breast and prostate cancer cell lines, and acetylcholinesterase inhibitory activity, and the principal component analysis (PCA) showed a variation in the metabolite content according to the altitude from which the mosses' samples were collected, indicating that the altitude of 30 m was determinant for the metabolite variation in <italic>S. uncinata.</italic> The present findings constitute a pilot study supporting further plant prospection in the maritime Antarctica.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 4","pages":"e20241371"},"PeriodicalIF":1.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Descriptions of the first Ciidae (Coleoptera: Tenebrionoidea) from the oceanic archipelago of Fernando de Noronha, Brazil. 标题巴西费尔南多-迪诺罗尼亚群岛第一蚊科记述（鞘翅目：拟甲总科）。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-09-22 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520250133

Igor Souza-Gonçalves, Cristiano Lopes-Andrade, Paschoal C Grossi

引用次数: 0

Are freshwater turtles macro-epibionts indicators of water quality of the streams where the turtles live? 淡水龟是它们生活的溪流的水质指标吗？

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-09-22 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520231262

Rocío María Sánchez, Leandro Alcalde

{"title":"Are freshwater turtles macro-epibionts indicators of water quality of the streams where the turtles live?","authors":"Rocío María Sánchez, Leandro Alcalde","doi":"10.1590/0001-3765202520231262","DOIUrl":"https://doi.org/10.1590/0001-3765202520231262","url":null,"abstract":"Organisms that live above others can give information not only about the relation between them but also about the environment they inhabit. In that sense, this work studies the relationship between epibionts living on freshwater turtles and the impact degree of streams where they live. We studied the macro-epibiont assemblages and algal and epipelic biofilm covers in two species of freshwater turtles with contrasting habits (the bottom-dwelling-aquatic basking <italic>Hydromedusa tectifera</italic> and the swimming-aerial basking <italic>Phrynops hilarii</italic>), from streams with different types and degrees of anthropogenic impact. Algal and epipelic biofilm covers and animal epibiont assemblages were, in most cases, greater in <italic>H. tectifera</italic> than in <italic>P. hilarii</italic>. In general, turtles from polluted streams had higher algal and epipelic biofilm covers and poorer epibiont assemblages with low abundance of sensible species. Our results also highlighted a key mutualistic relationship between <italic>H. tectifera</italic> and <italic>Temnocephala brevicornis</italic>,<italic> </italic>for which this turtle is the main host. We provide insights for using this biological unit to monitor water quality, particularly in low impacted streams where temnocephalans offer modulate responses, useful to early detection of pollution.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 4","pages":"e20231262"},"PeriodicalIF":1.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cold desert soil formation in Heritage Range, Ellsworth Mountains, West Antarctica. 在遗产山脉，埃尔斯沃思山脉，南极洲西部寒冷的沙漠土壤形成。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-09-22 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240657

Caroline Delpupo, Carlos Ernesto G R Schaefer, Fabio S DE Oliveira, José João L L DE Souza, Rosemary Vieira, Roberto F Michel, Marcio R Francelino

{"title":"Cold desert soil formation in Heritage Range, Ellsworth Mountains, West Antarctica.","authors":"Caroline Delpupo, Carlos Ernesto G R Schaefer, Fabio S DE Oliveira, José João L L DE Souza, Rosemary Vieira, Roberto F Michel, Marcio R Francelino","doi":"10.1590/0001-3765202520240657","DOIUrl":"https://doi.org/10.1590/0001-3765202520240657","url":null,"abstract":"The Ellsworth Mountains represent a significant gap in pedological studies in Antarctica, particularly concerning soil formation at the local level. This study focused on 22 soil profiles from the southern portion of the Ellsworth Mountains, developed on various parent materials and different landscape positions. The soils were characterized morphologically, physically, chemically, and mineralogically according to international analytical methods. Like other cold desert soils in Antarctica, the Ellsworth soils are, in general, skeletal-psammitic, shallow, and weakly structured. All soils accumulate salts, although the concentration depends on local drainage conditions and surface exposure time. These soils exhibit desert pavement and discrete, yet typical, features of cryoturbation. Vegetation colonization is highly dependent on greater water availability, lower salinity, and the presence of stone garlands on the soil surface, which help protect the lichens from strong aeolian erosion. The mineralogy of Ellsworth soils demonstrates a strong genetic relationship with the parent materials, showing only slight variation among them, as the extremely cold and arid climate severely limits chemical weathering and pedogenesis. Pedogenesis in the Ellsworth Mountains is highly influenced by climate and recent changes to the local surfaces.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 4","pages":"e20240657"},"PeriodicalIF":1.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Differentiation smelling footprints of the Chagas disease vector using an electronic nose based on artificial intelligence algorithms. 利用基于人工智能算法的电子鼻鉴别恰加斯病病媒的嗅觉足迹。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-09-22 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241031

Luisa F Ruiz-Jiménez, Daniel A Sierra, Homero O Boada, Bladimiro Rincon-Orozco, Jonny E Duque

{"title":"Differentiation smelling footprints of the Chagas disease vector using an electronic nose based on artificial intelligence algorithms.","authors":"Luisa F Ruiz-Jiménez, Daniel A Sierra, Homero O Boada, Bladimiro Rincon-Orozco, Jonny E Duque","doi":"10.1590/0001-3765202520241031","DOIUrl":"https://doi.org/10.1590/0001-3765202520241031","url":null,"abstract":"The present study aims to disclose the design of an electronic nose capable of learning and differentiating semiochemical signals from insects usable to identify species that transmit Chagas disease. The proposed device used different non-specific resistor gas sensors integrated into a system of artificial intelligence models. To validate the nose, we used eight insect species of the Triatominae subfamily and one population that was a natural carrier of the parasite Trypanosoma cruzi. Also, the discriminatory capacity of distant species was tested with other insects like Aedes aegypti (arbovirus vector) and Sitophilus oryzae (stored grains plague). As a result, the electronic nose was able to differentiate up to gender level with an accuracy of 89.64% and to differentiate Rhodnius pallensces naturally infected with T. cruzi with less than 1% error in classification. These results show that our designed device can detect particular smelling footprints, and one electronic nose like that could be a tool to discriminate against insects in the future.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 4","pages":"e20241031"},"PeriodicalIF":1.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Composition of volatiles of citrus varieties and their effects on the behavior of Diaphorina citri. 柑桔品种挥发物组成及其对柑桔蚜行为的影响。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-09-22 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240981

Leanderson C Oliveira, Paulo Roberto R Mesquita, Frederico M Rodrigues, Cristiane DE Jesus Barbosa, Marilene Fancelli, João G DA Costa, Alessandra S Schnadelbach

{"title":"Composition of volatiles of citrus varieties and their effects on the behavior of Diaphorina citri.","authors":"Leanderson C Oliveira, Paulo Roberto R Mesquita, Frederico M Rodrigues, Cristiane DE Jesus Barbosa, Marilene Fancelli, João G DA Costa, Alessandra S Schnadelbach","doi":"10.1590/0001-3765202520240981","DOIUrl":"https://doi.org/10.1590/0001-3765202520240981","url":null,"abstract":"Huanglongbing (HLB) is the most devastating citrus disease worldwide, with no resistant varieties currently available. Effective management of HLB relies heavily on controlling its primary vector, the Asian citrus psyllid (<italic>Diaphorina citri</italic>, ACP). This study aimed to evaluate the attractiveness of different citrus varieties to ACP using a four-arm olfactometer and to characterize the volatile organic compounds (VOCs) extracted from these plants. The varieties tested included three sweet orange scions ('Valencia', 'Westin', and 'Pera') and three rootstocks ('Rangpur' lime, 'Sunki Tropical', and 'BRS Bravo'). VOCs were extracted using HS-SPME and identified via GC-MS. Results indicated that 'Sunki Tropical', 'Rangpur' lime, and 'Valencia' were significantly more attractive to ACP compared to other varieties. The reduced attractiveness of rootstock genotypes, such as 'BRS Bravo' and the control 'Flying Dragon', was correlated with higher levels of germacrene D and γ-elemene. Conversely, the increased attractiveness of 'Rangpur' lime and 'Sunki Tropical' was associated with abundant D-limonene. In grafted scions on 'Rangpur' lime, linalool was identified as a key compound linked to the attractiveness of 'Westin' and 'Valencia'. These findings suggest that the differential attractiveness of citrus varieties to ACP is influenced by specific VOC profiles.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 4","pages":"e20240981"},"PeriodicalIF":1.1,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distribution, population dynamics, and current status of the grey dwarf hamster (Cricetulus migratorius (Pallas, 1773)) in the Martakert and Varnkatagh communities of Nagorno-Karabakh. 纳戈尔诺-卡拉巴赫Martakert和Varnkatagh社区灰矮仓鼠（Cricetulus migratorius (Pallas, 1773)）的分布、种群动态和现状

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-09-19 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241054

Vahram T Hayrapetyan, Lusine G Aydinyan, Nonna M Grigoryan, Tigran A Hayrapetyan

{"title":"Distribution, population dynamics, and current status of the grey dwarf hamster (Cricetulus migratorius (Pallas, 1773)) in the Martakert and Varnkatagh communities of Nagorno-Karabakh.","authors":"Vahram T Hayrapetyan, Lusine G Aydinyan, Nonna M Grigoryan, Tigran A Hayrapetyan","doi":"10.1590/0001-3765202520241054","DOIUrl":"https://doi.org/10.1590/0001-3765202520241054","url":null,"abstract":"The rodent fauna of the South Caucasus, including Nagorno-Karabakh, has remained largely underexplored for many years. Comprehensive data on the distribution, ecology, population dynamics, and biology of rodents, particularly the grey dwarf hamster, are still lacking. To address this gap, we selected the grey dwarf hamster as the focal species of our study, concentrating on specific areas within the Martakert community, including its regional center and parts of the Varnkatagh community. These areas have been impacted by both agricultural activities and military operations. Agricultural work exerts a dual impact on the grey dwarf hamster population: on the one hand, it negatively affects and reduces their numbers; on the other hand, it can create favorable feeding conditions that promote their growth and development. Military operations have had a devastating effect, irreversibly destroying the habitats of these animals and leading to significant population declines, contributing to the risk of local extinction. Our study is based on long-term field observations conducted in the Martakert and Varnkatagh communities between 1999 and 2023. Over this period, a total of 11,855 small mammals were captured, including 2,875 grey dwarf hamsters.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20241054"},"PeriodicalIF":1.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A study on the pollen of selected species of Sapindales A. Juss. ex Bercht. & J. Presl (Magnoliophyta) occurring in an urban forest fragment in southeastern Brazil. 刺柳属植物花粉的研究。Bercht交货。& J. Presl（木兰属植物）出现在巴西东南部的城市森林碎片中。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-09-19 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241108

Fernanda C Fernandes, Andrea P Luizi-Ponzo

{"title":"A study on the pollen of selected species of Sapindales A. Juss. ex Bercht. & J. Presl (Magnoliophyta) occurring in an urban forest fragment in southeastern Brazil.","authors":"Fernanda C Fernandes, Andrea P Luizi-Ponzo","doi":"10.1590/0001-3765202520241108","DOIUrl":"https://doi.org/10.1590/0001-3765202520241108","url":null,"abstract":"Order Sapindales includes species with high economic potential and wide geographic distribution, for which there are taxonomic divergences and gaps in knowledge of pollen morphology. The Atlantic Forest, albeit fragmented, houses many Sapindales species for which palynological studies are still incipient. The present study aims to investigate the morphology of pollen grains of Sapindales species occurring in an urban forest fragment located in southeastern Brazil. This forest fragment presents high species richness, which include five families of Sapindales: Anacardiaceae R.Br., Burseraceae Kunth, Meliaceae A. Juss., Rutaceae A. Juss., and Sapindaceae A. Juss. The botanical material used belongs to the Leopoldo Krieger Herbarium collection. Our observations were done under light microscope and scanning electron microscope, using standardized methodologies adopted in Palynology. Our findings show that the pollen grains have a subcircular, triangular or quadrangular amb; peroblate to prolate shape; the apertural types are 3-porate, 3-colporate, 3-syncolporate and 3-parasyncolporate; and ornamentation varies from psilate, reticulate, microreticulate to striate.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20241108"},"PeriodicalIF":1.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Impact of Physical Exercise on the Presence of Micronuclei in Buccal Mucosa Cells in Individuals with Different Glycemic States. 体育锻炼对不同血糖状态个体颊粘膜细胞微核存在的影响。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-09-19 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240800

Taiane Nogueira Almeida, Jean Franciesco Vettorazzi, Rodrigo Juliano Grignet, Ademar Pinezi Junior, Maria Claudia Gross

{"title":"The Impact of Physical Exercise on the Presence of Micronuclei in Buccal Mucosa Cells in Individuals with Different Glycemic States.","authors":"Taiane Nogueira Almeida, Jean Franciesco Vettorazzi, Rodrigo Juliano Grignet, Ademar Pinezi Junior, Maria Claudia Gross","doi":"10.1590/0001-3765202520240800","DOIUrl":"https://doi.org/10.1590/0001-3765202520240800","url":null,"abstract":"Diabetes Mellitus (DM) is a group of metabolic disorders characterized by elevated blood glucose levels, with a worldwide increasing prevalence attributed to socioeconomic, demographic, environmental, and genetic factors. Type 2 Diabetes Mellitus (T2DM) is closely linked to obesity, unhealthy diets, and physical inactivity, resulting in oxidative stress and DNA damage due to insulin resistance and mitochondrial dysfunction. Additionally, T2DM leads to hyposalivation, elevated salivary glucose, and periodontal disease. This study aimed to evaluate DNA damage in the oral mucosa of 78 individuals (ages 30-76) with T2DM, pre-diabetes, or healthy controls, who reported engaging in physical exercise or not. Micronuclei were assessed in 100 oral epithelial cells per individual. Statistical analysis included descriptive and normality tests, as well as Kruskal-Wallis. Our results showed an increased number of micronuclei in T2DM patients, regardless of physical exercise. This suggests that T2DM can induce DNA damage, an effect not prevented by self-reported physical exercise. These DNA damages are involved in the comorbidities associated with T2DM, leading to cellular dysfunction. Moreover, the micronuclei assay proved to be a reliable, effective, minimally invasive, and low-cost biomarker for the prevention, screening, and monitoring of T2DM.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20240800"},"PeriodicalIF":1.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Habitat Integrity and Microplastic Contamination in Amazonian Streams: Assessment of Water, Sediment, and Fish and Identification of Predominant Polymers. 亚马逊河流中的栖息地完整性和微塑料污染：水、沉积物和鱼类的评估以及主要聚合物的鉴定。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-09-19 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520250334

Ana Beatriz Picanço, Danielle Regina G Ribeiro-Brasil, Jorge Luiz B DE Faria, Ricardo R F Bento, Luciano F A Montag

{"title":"Habitat Integrity and Microplastic Contamination in Amazonian Streams: Assessment of Water, Sediment, and Fish and Identification of Predominant Polymers.","authors":"Ana Beatriz Picanço, Danielle Regina G Ribeiro-Brasil, Jorge Luiz B DE Faria, Ricardo R F Bento, Luciano F A Montag","doi":"10.1590/0001-3765202520250334","DOIUrl":"https://doi.org/10.1590/0001-3765202520250334","url":null,"abstract":"Microplastic (MP) contamination is a global problem that affects several ecosystems. This contamination is present in streams in the Amazon region, which is subject to great risks through anthropogenic actions. The present study verified the possible relationship between the physical integrity of the habitat and the levels of MP contamination in Amazonian streams, evaluating which environmental component, among water, sediment and biodiversity (fish) was most contaminated by MPs and which type of polymer was most present. No relationship was found between the integrity of the environment and the concentration of MPs in streams. The concentration of MPs in the sediments was higher than that found in the water, and only eight fish specimens were contaminated. Despite the low concentration rates of MPs recorded, our results suggest that streams can function as a deposit of MPs. It is possible that the lower level of contamination is associated with the low presence of point sources of MPs, as well as some physical factors that can transport MPs to other systems. The low concentration of MPs in streams may explain lower ingestion rates by fish, since low concentrations of particles in the environment reduce the chances of ingestion of these particles by organisms.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97Suppl. 3 Suppl. 3","pages":"e20250334"},"PeriodicalIF":1.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0