Results 21 to 30 of about 1,206 (123)

Macro- and microscopic characterization of yellow-catfish Cathorops spixii (Agassis, 1829) ovaries during reproductive cycle

open access: yes, 1998
Este estudo é baseado na análise da anatomia macroscópica e da estrutura histológica de 452 ovários de fêmeas de Cathorops spixii coletadas nas Ilhas Pai Matos (região estuarino-lagunar de Cananéia-Iguape - 24°59'42"S 47°54'27"W), São Paulo, Brasil. Foram consideradas seis fases de desenvolvimento ovocitário, com base nas características citológicas ...
Silva, Jodir Pereira da   +2 more
openaire   +3 more sources

DIETA DO BAGRE ESTUARINO Cathorops arenatus (VALENCIENNES, 1840) NA ILHA DE MAIANDEUA, PARÁ, BRASIL [PDF]

open access: yes, 2020
Cathorops arenatus (Siluriformes: Ariidae) inhabits shallow waters and is abundant in the North coast of Brazil. Despite its local use and susceptibility to overexploitation and pollution, basic biological information is lacking to shape conservation ...
Lobato, Cleonice Maria Cardoso   +4 more
core   +1 more source

Seasonal arsenic in catfish (Siluriformes, Ariidae) and the hydrochemical conditions of two areas in a Ramsar site on the Brazilian coast

open access: yesAnais da Academia Brasileira de Ciências, 2023
The construction of a data bank concerning metal and metalloid content of bioindicator fish from coastal areas is very important as it can help environmental managers in decision making.
JULIANA S. AZEVEDO   +3 more
doaj   +1 more source

Peixes ósseos (Teleostei) capturados pela pesca de pequena escala na costa centro-sul de São Paulo, Sudeste do Brasil [PDF]

open access: yes, 2014
Small-scale fisheries have a great socioeconomic importance in Brazil. Different regional characteristics along the coast, mostly related to landing sites, equipment used, and targeted species, renders its assessment and monitoring difficult.
Gadig, Otto Bismarck Fazzano   +3 more
core   +4 more sources

RELAÇÕES PESO-COMPRIMENTO E COMPRIMENTO-COMPRIMENTO PARA 37 ESPÉCIES DE PEIXES DEMERSAIS DO CANAL PRINCIPAL DO RIO MARAPANIM, COSTA NORDESTE DO ESTADO DO PARÁ, BRASIL [PDF]

open access: yes, 2015
Length-length and weight-length relationships are presented for 37 demersal fish species caught in the main channel of the Marapanim River. The mean allometric coefficient (b) in the weight-length relationship (W = aLb) was 3.04 (±0.32).
Ferraz, Daniel, Giarrizzo, Tommaso
core   +1 more source

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