Anais da Academia Brasileira de Ciencias最新文献_第7页

Feeding Ecology and Microplastic Contamination of Planktophagous Fishes in a tropical Southwestern Atlantic Estuarine Ecosystem. 西南大西洋热带河口生态系统浮游食性鱼类的摄食生态和微塑料污染。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-04 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241408

Stephan Carty, Mário Barletta, Maria Inês B Tavares, Mariana S Alves, Francisco José A Cysneiros, Ester Milena Dos Santos, Antônio Mateo Lazarte-Rivera

{"title":"Feeding Ecology and Microplastic Contamination of Planktophagous Fishes in a tropical Southwestern Atlantic Estuarine Ecosystem.","authors":"Stephan Carty, Mário Barletta, Maria Inês B Tavares, Mariana S Alves, Francisco José A Cysneiros, Ester Milena Dos Santos, Antônio Mateo Lazarte-Rivera","doi":"10.1590/0001-3765202520241408","DOIUrl":"https://doi.org/10.1590/0001-3765202520241408","url":null,"abstract":"This study describes the spatial and temporal distribution of density and biomass, feeding ecology and contamination by microplastics (MPs) in <italic>A. clupeoides</italic> and <italic>C. edentulus</italic> in the Goiana Estuary. <italic>A. clupeoides</italic> were found in all portions of the estuary, mainly in the late rainy and late dry seasons. <italic>C. edentulus</italic> was found in the upper and lower portions of the estuary mainly in the late dry season. <italic>A. clupeoides</italic>' adult specimens fed mainly on copepods in the lower estuary during the beginning of the rainy season when they were contaminated by black MPs. <italic>A. flexuosa</italic> larvae were consumed by subadults in the lower portion during the final rainy season and by juveniles in the lower portion during the end of the dry season when they were contaminated by the same type and color of MPs. The species <italic>C. edentulus</italic> both adults and subadults feed on <italic>Coscinodiscus sp</italic>. and <italic>Actinopthycus sp</italic>. in the lower portion during the final rainy season. At this time, adults were contaminated by blue MPs. MPs' samples were analyzed by FTIR, were composed of polyethylene<italic>.</italic>.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97Suppl. 3 Suppl. 3","pages":"e20241408"},"PeriodicalIF":1.1,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144788075","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

Compound effect of land use and land cover and ENSO on the discharge of subbasins in the Amazon. 土地利用/土地覆盖与ENSO对亚马孙流域径流的复合效应

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-04 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241422

Adayana Maria Q DE Melo, Claudio José C Blanco, Augusto José Pereira Filho, Renato O DA Silva-Júnior, Pedro Walfir M Souza-Filho, Wilson R Nascimento

{"title":"Compound effect of land use and land cover and ENSO on the discharge of subbasins in the Amazon.","authors":"Adayana Maria Q DE Melo, Claudio José C Blanco, Augusto José Pereira Filho, Renato O DA Silva-Júnior, Pedro Walfir M Souza-Filho, Wilson R Nascimento","doi":"10.1590/0001-3765202520241422","DOIUrl":"https://doi.org/10.1590/0001-3765202520241422","url":null,"abstract":"Evaluate the compound effect of land use and cover and ENSO (El Niño-Southern Oscillation) on the streamflows of two paired subbasins of the Itacaiúnas River Basin (IRB), Brazilian Eastern Amazon. Specific discharge data were determined using rating curves for the period from 01/27/2020 to 01/27/2022. ERA5-Land reanalysis data were used to assess mean precipitation and land use and land cover maps were used to assess changes in land cover dynamics. The region was influenced by La Niña of weak intensity that lasted 3 years. In 2020, during the rainy season, the sign of land cover prevailed in subbasins hydrographs variability. Thus, the main flow rates of the pasture were higher than those of the forest. And during the dry season, the mean flow rates of the forest were the highest. However, in 2021, the La Niña signal became moderate in intensity, modifying the hydrographs. The two subbasins did not undergo significant changes in land use and cover from 2020-2021 and were subjected to the same climatic conditions. Therefore, the increase in minimum discharge in the pasture subbasin in 2021 was a consequence of the moderate La Niña event in the Niño region 3.4.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20241422"},"PeriodicalIF":1.1,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144788070","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

Methodological similarities and discrepancies among studies on microplastics in South American continental aquatic environments. 南美大陆水生环境中微塑料研究方法的异同。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-04 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241459

Décio Semensatto, Camila C Passos, Camilla S Bicalho, Lucas P Mendes-Silva, Geórgia Labuto

引用次数: 0

Impacts of land use and occupation in riparian zones on water quality and soil fertility: a study in the Antas River, Irati-PR, Brazil. 河岸带土地利用和占用对水质和土壤肥力的影响：在巴西伊拉蒂- pr的安塔斯河的研究。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-04 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240042

Guilherme Gavlak, Paulo C Oliveira Filho, Kátia Cylene Lombardi, Kelly Geronazzo Martins

{"title":"Impacts of land use and occupation in riparian zones on water quality and soil fertility: a study in the Antas River, Irati-PR, Brazil.","authors":"Guilherme Gavlak, Paulo C Oliveira Filho, Kátia Cylene Lombardi, Kelly Geronazzo Martins","doi":"10.1590/0001-3765202520240042","DOIUrl":"https://doi.org/10.1590/0001-3765202520240042","url":null,"abstract":"Uncontrolled population growth and intensified human activities result in environmental impacts on water bodies and soils in Permanent Preservation Areas (PPA) found in riparian areas (RA). This study aimed to assess the water quality of the Antas River and the soil fertility of its PPA present in riparian areas, correlating the results with the land use and occupation in riparian areas. Land use and occupation mapping was conducted in the Antas River watershed, and subsequently, 14 sampling points were selected along the main river. Water samples were collected at these points and characterized for parameters of the water quality index (WQI). Soil samples from the riparian area at the sampling points were collected and fertility analyses were performed. The data indicate that vegetation in RA is essential for soil fertility, positively influencing organic material, phosphorus, calcium, and pH in CaCl2. The significant presence of native vegetation is associated with higher organic material in the soil, lower levels of aluminum, and better water quality indices. Conversely, urbanized areas with low organic material, high aluminum concentrations, and poor water quality show a direct relationship.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20240042"},"PeriodicalIF":1.1,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144788071","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

New Tacrine Dimers Alleviate the Intracellular Amyloid-β-induced Cognitive Disturbance and Oxidative Stress in Mice. 新塔克林二聚体减轻细胞内淀粉样蛋白β诱导的小鼠认知障碍和氧化应激。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-07-25 DOI: 10.1590/0001-3765202520241163

Ana Elisa Gonçalves, Otto Spigariol, Luísa M DA Silva, Yuri F Rego, Clara Herrera-Arozamena, María Isabel Rodríguez-Franco, Ângelo DE Fátima, Thiago Henrique Doring, Lucas Augusto Araujo, Maria Lígia R Macedo, Sumbal Saba, Jamal Rafique, Aldo S DE Oliveira, Márcia Maria DE Souza

引用次数: 0

First evidence of microplastic accumulation in placentas and umbilical cords from pregnancies in Brazil. 巴西孕妇胎盘和脐带中微塑料积累的首个证据。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-07-25 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241298

Camila Wanderley L Oliveira, Lais F A M Oliveira, Jacob Garcia, Rodrigo B Weingrill, Johann Urschitz, Samuel T Souza, Eduardo Jorge S Fonseca, Stephanie Ospina-Prieto, Alexandre U Borbely

{"title":"First evidence of microplastic accumulation in placentas and umbilical cords from pregnancies in Brazil.","authors":"Camila Wanderley L Oliveira, Lais F A M Oliveira, Jacob Garcia, Rodrigo B Weingrill, Johann Urschitz, Samuel T Souza, Eduardo Jorge S Fonseca, Stephanie Ospina-Prieto, Alexandre U Borbely","doi":"10.1590/0001-3765202520241298","DOIUrl":"10.1590/0001-3765202520241298","url":null,"abstract":"Microplastics (MPs) production and degradation are becoming a global concern. They accumulate across diverse environments, animals, and human tissues, closely linking to emerging environmental health impacts. In the Brazilian population, no evidence yet of accumulation in pregnant women's placenta or umbilical cord. In this pilot cross-sectional, observational study, we analyzed the presence, size, and composition of MPs isolated from placentas (n=10) and umbilical cords (n=10) from Maceio pregnant women. Under a plastic-controlled protocol, samples were digested with 10% KOH solution, glass-filtered, and retained particles were then analyzed by Raman spectroscopy. A total of 229 MPs were identified across all samples, including 110 in placental tissues and 119 in umbilical cord tissues. The predominant polymers were polyethylene (PE), polyamide (PA), polyethylene vinyl acetate (PEVA), polyurethane (PU), and polypropylene (PP). Our results demonstrated for the first time the accumulation of MPs in the placentas and umbilical cords of Brazilian pregnant women. This accumulation suggests that pregnant women in Maceio, Brazil, are likely experiencing microplastic (MP) exposure similar to global trends, emphasizing the importance of studying the mechanisms that facilitate the transport of MPs and related chemicals across the placental barrier.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97Suppl 3 Suppl 3","pages":"e20241298"},"PeriodicalIF":1.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12469211/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144740970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Demineralization of eucalyptus biochar with hydrochloric acid: A kinetic study. 盐酸对桉树生物炭脱矿的动力学研究。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-07-25 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520250080

Vitoria S Silveira, Lucio Rosso Neto, Carlos Henrique Borgert, Tiago Elias A Frizon, Danúbia J Cuzzuol, Sumbal Saba, Matheus Vinicius Gregory Zimmermann, Eduardo Junca

{"title":"Demineralization of eucalyptus biochar with hydrochloric acid: A kinetic study.","authors":"Vitoria S Silveira, Lucio Rosso Neto, Carlos Henrique Borgert, Tiago Elias A Frizon, Danúbia J Cuzzuol, Sumbal Saba, Matheus Vinicius Gregory Zimmermann, Eduardo Junca","doi":"10.1590/0001-3765202520250080","DOIUrl":"https://doi.org/10.1590/0001-3765202520250080","url":null,"abstract":"One of the alternatives for reducing carbon emissions in the steel industry is the use of bio-coals. However, the use of biomass and its derivatives in steelmaking processes presents technical challenges due to their different chemical and physical characteristics to fossil fuels. In this context, this study aims to evaluate the effect of hydrochloric acid on the demineralization of eucalyptus charcoal, in order to understand its properties and potential application in the steel industry. To this end, the charcoal was subjected to a demineralization process using hydrochloric acid, varying the liquid-solid ratio (10:1 - 20:1) and molar concentration (1 - 3 M). The samples were then filtered, washed with deionized water and dried in an oven. The biochar was then characterized by determining surface area, moisture content, volatile content, ash content, fixed carbon content and kinetic analysis. The results showed that the surface area of the treated biocarbons increased by up to 438.38%, there was a reduction in the ash content of up to 91% and the activation energy of the gasification reaction varied between 54.8 and 109.9 kJ/mol.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97Suppl. 2 Suppl. 2","pages":"e20250080"},"PeriodicalIF":1.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144740971","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

Living in big houses: the role of parasitism on anacondas (Boidae: Eunectes), with new records, parasites catalog, and assessment perspectives. 生活在大房子里：水蟒寄生在水蟒身上的作用，新记录，寄生虫分类和评估观点。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-07-14 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240499

Bruno F Camera, Ana Lúcia C Prudente, Isabella P Pesenato, Ricardo Bassini-Silva, Fernando C Jacinavicius

{"title":"Living in big houses: the role of parasitism on anacondas (Boidae: Eunectes), with new records, parasites catalog, and assessment perspectives.","authors":"Bruno F Camera, Ana Lúcia C Prudente, Isabella P Pesenato, Ricardo Bassini-Silva, Fernando C Jacinavicius","doi":"10.1590/0001-3765202520240499","DOIUrl":"10.1590/0001-3765202520240499","url":null,"abstract":"Anacondas rank among the largest snakes on Earth. Found throughout South America, including urban areas, they are commonly traded globally. However, information on anacondas' parasites and pathogens is scattered, necessitating a comprehensive summary. Using morphological and molecular approaches, we provide new records of the ticks <italic>Amblyomma</italic> <italic>dissimile</italic> and <italic>A. rotundatum</italic> hosted on ethanol-preserved specimens of<italic> Eunectes murinus</italic> and <italic>E. deschauenseei</italic>. The presence of <italic>A. rotundatum</italic> on <italic>E. deschauenseei</italic> represents the first record to this rare and poorly known species. Our literature review revealed 45 organisms living on anacondas (13 animal species, four protozoans, 10 fungi, 17 bacteria, and one viral lineage), mostly on <italic>E. murinus</italic>. Anacondas rescued in urban areas or kept in zoos provide a fortuitous opportunity for collecting data on parasites and pathogens, useful for measuring the impacts of habitat anthropization, as well as for preventing the spread of diseases disseminated by traded animals. Withal, characterizing anacondas' parasites and pathogens is paramount to establishing appropriate treatment of diseases caused by these agents, and in cases of accidents involving humans.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20240499"},"PeriodicalIF":1.1,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641543","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

Effect of mechanical processing and storage length on whole-plant sorghum silage fermentation. 机械加工和贮藏时间对高粱全株青贮发酵的影响。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-07-14 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241162

Maria Helena DE Oliveira, Tatiane Fernandes, Daniel Martins DE Souza, Juliana DA Silva Barros, Paulo Roberto DE Lima Meirelles, Ciniro Costa

{"title":"Effect of mechanical processing and storage length on whole-plant sorghum silage fermentation.","authors":"Maria Helena DE Oliveira, Tatiane Fernandes, Daniel Martins DE Souza, Juliana DA Silva Barros, Paulo Roberto DE Lima Meirelles, Ciniro Costa","doi":"10.1590/0001-3765202520241162","DOIUrl":"https://doi.org/10.1590/0001-3765202520241162","url":null,"abstract":"Due to their smaller size, sorghum grains often remain intact during ensiling, which can impair starch availability for fermentation and reduce their overall digestibility. Thus, this study aimed to evaluate the influence of the mechanical processing of the forage mass before ensiling, as well as the length of storage in whole plant sorghum silages. The experimental design was completely randomized, in a 2 × 3 factorial scheme, with two processing methods (non-processed or processed) and three storage lengths (35, 70, and 105 days). Two counter-rotating smooth rolls were used to smash the chopped forage, aiming to expose the starch matrix of the sorghum grains without altering the forage fraction particle size. Crude protein contents decreased while ammonia nitrogen increased for long storage length silages due to proteolysis. <italic>In vitro</italic> dry matter digestibility was lower for processed silage compared to non-processed silage. Storage length increased the percentage of particles retained on sieve 3 (> 4 mm), while decreased particles retained on sieve 2 (> 9mm) of the Penn state particle separator. The combination of processing method and storage length of whole-plant sorghum silages enhanced crude protein solubilization elucidating the effectiveness of these practices in promote starch availability.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20241162"},"PeriodicalIF":1.1,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641536","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

Financial expenditure as a criterion for choosing the most appropriate method for ecological corridor implementation. 以财政支出为标准，选择最适宜的生态廊道实施方式。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-07-14 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520231177

Renan A Oliveira, Liliane M Nery, Vanessa Cézar Simonetti, Arthur P Dos Santos, Antônio César G Martins, Darllan C C Silva

{"title":"Financial expenditure as a criterion for choosing the most appropriate method for ecological corridor implementation.","authors":"Renan A Oliveira, Liliane M Nery, Vanessa Cézar Simonetti, Arthur P Dos Santos, Antônio César G Martins, Darllan C C Silva","doi":"10.1590/0001-3765202520231177","DOIUrl":"https://doi.org/10.1590/0001-3765202520231177","url":null,"abstract":"To enhance landscape connectivity and mitigate the effects of forest fragmentation caused by urban expansion and human activities, ecological corridors (EC) have been proposed as a solution. This study evaluates the financial costs associated with land acquisition for the establishment of an EC between the Municipal Natural Park Biodiversity Corridors (PNMCBio) and the Ipanema National Forest (Flona Ipanema) using LSCorridors for EC modeling. Using land use and vegetation cover data as input, corridors were modeled based on four different resistance surfaces, which were generated in LSCorridors (pixel-based measure (PM), minimum (LMmin), average (LMavg), and maximum (LMmax) landscape measures. The models utilized a land use and vegetation cover resistance map from 2019. Additionally, an information plan was developed to assess the costs of land acquisition based on generic municipal maps. Among the LSCorridors methods, the PM approach resulted in 41.05% of the EC area being legally protected and yielded the lowest acquisition cost, totaling R$ (Brazilian real) 487,476.16. This proposed model can assist public managers in making informed decisions about EC proposals, thereby optimizing the allocation of public resources.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20231177"},"PeriodicalIF":1.1,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641538","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