Results 51 to 60 of about 244 (122)

Establishing a model fish for the Neotropical region: The case of the yellowtail tetra Astyanax altiparanae in advanced biotechnology. [PDF]

Front Genet, 2022
Yasui GS, Ferreira do Nascimento N, Pereira-Santos M, Dos Santos Silva AP, Coelho GCZ, Visintin JA, Porto-Foresti F, Okada Nakaghi LS, Vianna NC, Carvalho GB, Monzani PS, López LS, Senhorini JA.   +12 more
europepmc   +1 more source

Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570

Acta Scientiarum: Biological Sciences, 2012
This study analyzed physicochemical characteristics of the water, degradation of the surroundings and the influence of these factors on the diet of two fish species of Astyanax in Tarumã stream microbasin, central western Brazil.
Rosangela Guarisso de Souza, Sidnei Eduardo Lima-Junior   +1 more
doaj   +1 more source

Genetic variability in Astyanax altiparanae Garutti & Britski, 2000 (Teleostei, Characidae) from the Upper Paraná River basin, Brazil

Genetics and Molecular Biology, 2005
Allozyme data was used to assess the genetic diversity Astyanax altiparanae populations from the floodplain of the Upper Paraná River (PR). Specimens were collected in the southern Brazilian state of Paraná from PR in Porto Rico municipality and Ribeirão
Maria Dolores Peres, Marcio dos Santos Vasconcelos, Erasmo Renesto   +2 more
doaj   +1 more source

Comparative cytogenetics in Astyanax (Characiformes: Characidae) with focus on the cytotaxonomy of the group

Neotropical Ichthyology
Astyanax is a diverse group of Neotropical fishes, whose different forms occupy different environments. This great diversity is also reflected on cytogenetic aspects and molecular markers, which have repeatedly been demonstrated by cytogenetic studies ...
Renata Cristina Claudino de Oliveira Tenório, Carla de Andrade Vitorino, Issakar Lima Souza, Claudio Oliveira, Paulo Cesar Venere   +4 more
doaj   +1 more source

Integrated biomarker response index using a Neotropical fish to assess the water quality in agricultural areas

Neotropical Ichthyology
Aquatic ecosystems in areas with intense agricultural activity are subject to pesticide contamination, which may compromise the health of the fish. In order to verify the quality of the water and the possible effects of pesticides on fish, a method that ...
Carlos Eduardo Delfino Vieira, Mayara da Silva Almeida, Bruno Ambrssio Galindo, Lindalva Pereira, Claudia Bueno dos Reis Martinez   +4 more
doaj   +1 more source

Light microscopy and ultrastructure of the liver of Astyanax altiparanae Garutti and Britski, 2000 (Teleostei, Characidae) - DOI: 10.4025/actascibiolsci.v30i1.1456

Acta Scientiarum: Biological Sciences, 2008
Fígados de 30 exemplares de Astyanax altiparanae, obtidos de pesqueiros, foram submetidos à microscopia de luz e à microscopia eletrônica de transmissão para descrição do parênquima hepático e do tecido pancreático exócrino intra-hepático. Anatomicamente,
Bruno Bertolucci, Carlos Alberto Vicentini, Irene Bastos Franceschini Vicentini, Maria Terezinha Siqueira Bombonato   +3 more
doaj   +1 more source

Avaliação da atividade mutagênica do Roundup® em Astyanax altiparanae (Chordata, Actinopterygii)

Evidência, 2012
Os herbicidas a base de glifosato, como o Roundup®, são amplamente empregados em todo o mundo. Dados sobre a capacidade que esses compostos tóxicos têm de interferir no DNA, causando mutações, são importantes para o monitoramento de populações naturais ...
Gustavo Borba de Miranda, Geonildo Rodrigo Disner, Mauro Vendrusculo da Rocha   +2 more
doaj  

MATURAÇÃO OVARIANA DE Astyanax altiparanae APÓS DESOVA EM SISTEMA DE RECIRCULAÇÃO DE ÁGUA

Boletim do Instituto de Pesca, 2018
Neste estudo, avaliamos a possibilidade de obtenção de desovas sucessivas de Astyanax altiparanae mantidos em biotério. Para isso, 104 indiví­­duos foram distribuí­­dos aleatoriamente em quatro caixas (10 fêmeas e 16 machos em cada) e mantidos a uma ...
Lieschen Valeria Guerra LIRA, Rafael Yutaka KURADOMI, Thiago GONÇALVES de Souza, Patrick HAINFELLNER, Sergio Ricardo BATLOUNI   +4 more
doaj   +1 more source

Aspectos ecológicos dos metazoários parasitos de Astyanax altiparanae garutti & britski, 2000 (characidae) da planí­­cie de inundação do alto rio Paraná, Brasil

Boletim do Instituto de Pesca, 2018
Cento e noventa exemplares de Astyanax altiparanae Garutti e Britski, 2000 foram coletados na planí­­cie de inundação do alto rio Paraná, Brasil entre fevereiro de 2000 e novembro de 2001, com o objetivo de identificar a fauna parasitária e observar os ...
Maria de los Angeles Perez LIZAMA, Ricardo Massato TAKEMOTO, Gilberto Cezar PAVANELLI   +2 more
doaj  

Feeding and morphological analysis of the digestive tract of four species of fish (Astyanax altiparanae, Parauchenipterus galeatus, Serrasalmus marginatus and Hoplias aff. malabaricus) from the upper Paraná River floodplain, Brazil

Brazilian Journal of Biology
The present study is inspired by the great wealth of species exhibited by the ichthiofauna. Not only concepts and techniques of ecology deserve attention, but also knowledge in other biological areas, such as zoology and anatomy, are necessary.
D. Peretti, IF. Andrian
doaj   +1 more source