Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Biological Sciences (3) Autor Gomes, Iracema David (3) Araujo, Francisco Gerson (2) Morado, Claudio Nona (2) Araújo, Francisco Gerson (1) Martins, Thiago Estevan Parente (1) Nascimento, Aparecida Alves do (1) Paumgarten, Francisco José Roma (1) Sales, Armando (1) Santos, Marcos Antonio José dos (1) Mais... Palavra-chave 2.03.00.00-0 Ecologia condition factor (1) Ecologia aplicada ecologia de peixes liver (1) Ecologia aplicada Ethoxyresorufin-O-deethylase (EROD) activity (1) Fishes (1) Freshwater fish (1) Geophagus brasiliensis (1) Hepatic alterations (1) Hepatosomatic index (1) Micronuclei (1) Monitoring (1) Pimelodus maculatus (1) Polycyclic aromatic hydrocarbons (PAHs). Monitoramento ambiental usando peixes (1) Reservoirs. Ictiologia (1) Rivers. Ecologia de peixes (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2019 (1) 2018 (1) 2017 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Histopathological analysis of liver of the catfish Pimelodus maculatus in a tropical eutrophic reservoir from Southeastern Brazil Biological Sciences Araujo, Francisco Gerson; Gomes, Iracema David; Nascimento, Aparecida Alves do; Santos, Marcos Antonio José dos; Sales, Armando. We described liver tissues of the long-whiskered catfish Pimelodus maculatus using histological techniques through structures stained with hematoxylin and eosin. The main aim was characterize the tissues and eventual changes, since this organ has a notable sensitivity to change in altered aquatic systems. The liver has a parenchyma divided into irregular lobules containing the exocrine pancreas (hepatopancreas) that have pancreatic cells arranged around a branch of the portal vein. The hepatocytes are diffuse and arranged in cords. The organization of exocrine pancreatic tissues is similar to the acinar morphology of many teleosts. Six types of liver alterations were found: 1) cytoplasmic vacuolization; 2) congestion; 3) inflammatory infiltrated; 4)... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecologia aplicada ecologia de peixes liver; Freshwater fish; Hepatic alterations; Reservoirs. Ictiologia. Ano: 2019 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/41039 Induced CYP1A activity and DNA damage in fish from the middle Paraíba do Sul River basin, southeastern Brazil Biological Sciences Morado, Claudio Nona; Martins, Thiago Estevan Parente; Araujo, Francisco Gerson; Paumgarten, Francisco José Roma; Gomes, Iracema David. The Paraíba do Sul River (PSR) drainage basin in Southeastern Brazil covers one of the most industrialized and densely populated regions of the country. The impact of chemical contamination on the PSR basin seems to be more pronounced in its middle reach where a number of potentially polluting plants are located. In this study, we used hepatic EROD activity - a biomarker of exposure to CYP1A-inducing pollutants (e.g. PAHs, PCDD/Fs, PCBs) - and the incidence of micronucleated erythrocytes (Mn) in the peripheral blood - a biomarker of effects of DNA-damaging agents (e.g. PAHs) - to evaluate the effects of pollution on two native fish species, Geophagus brasiliensis and Pimelodus maculatus. Results showed that the incidence of Mn and EROD in G. brasiliensis... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecologia aplicada Ethoxyresorufin-O-deethylase (EROD) activity; Geophagus brasiliensis; Micronuclei; Pimelodus maculatus; Polycyclic aromatic hydrocarbons (PAHs). Monitoramento ambiental usando peixes. Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36666 The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil Biological Sciences Morado, Claudio Nona; Araújo, Francisco Gerson; Gomes, Iracema David. Biomarkers are measurements within an organism that respond to environmental effects and are used as tools in bioassessment programs since they reflect physiological changes induced by exposure to pollutants. The hepatosomatic index (HSI) and the condition factor (CF) in three fish species Geophagus brasiliensis, Hypostomus affinis and Hypostomus auroguttatus were used to assess effects of pollutant stress in a tropical river during two seasons (dry and wet). Fish from the least disturbed sites had the lowest condition factor (CF) and the lowest HSI, whereas those from sites near pollutant discharges had the highest CF and HSI. Higher HSI and lower CF occurred during the dry season. It is suggested that species adapted to stressful conditions take... Tipo: Info:eu-repo/semantics/article Palavras-chave: 2.03.00.00-0 Ecologia condition factor; Hepatosomatic index; Fishes; Monitoring; Rivers. Ecologia de peixes. Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34293 Registros recuperados: 3 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco