Results 61 to 70 of about 864 (141)

Habitat preferences of common native fishes in a tropical river in Southeastern Brazil

open access: yesNeotropical Ichthyology
We determined in this study the habitat preferences of seven native fish species in a regulated river in Southeastern Brazil. We tested the hypothesis that fishes differ in habitat preference and that they use stretches of the river differing in ...
Marcus Rodrigues da Costa   +3 more
doaj   +1 more source

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

open access: yesBrazilian 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

Ictiofauna del arroyo La Choza, cuenca del Río de la Reconquista (Buenos Aires, Argentina) [PDF]

open access: yes, 2009
Fil: Colautti, Darío César. Instituto Tecnológico Chascomús (IIB-IINTECH/UNSAM-CONICET)Fil: Maroñas, Miriam Edith. Instituto de Limnología Dr. Raúl A. Ringuelet (ILPLA); Facultad de Ciencias Naturales y Museo; Universidad Nacional de La PlataFil: Sendra,
Brancolini, Florencia   +5 more
core   +1 more source

Ichthyofauna from the Emas National Park region: composition and structure

open access: yesBrazilian Journal of Biology
The relationship between habitats and the ichthyofauna composition in the Parque Nacional das Emas (PNE) and adjacent areas (the Araguaia and Sucuriú rivers) are provided and could be applied in determining the Park's future zoning.
E. Benedito-Cecilio   +5 more
doaj   +1 more source

Ictiofauna De Riachos Da Bacia Do Baixo Rio Iguaçu, Estado Do Paraná, Brasil [PDF]

open access: yes, 2017
The drainages of the Iguaçu River basin, as well as the main channel of the river, have peculiar characteristics resulting from geomorphological processes in this area, including the formation of the Iguaçu River Falls. This slope in the lower portion of
Baumgartner D.   +5 more
core   +1 more source

ICTIOFAUNA DA FOZ DO RIO MAQUINÉ, TERRA DE AREIA, RIO GRANDE DO SUL, BRASIL

open access: yesPesquisa Agropecuária Gaúcha, 1998
O presente estudo foi realizado nos anos de 1984 e 1985, na foz do rio Maquiné junto a lagoa dos Quadros. Foram realizadas, 10 amostragens e coletados 6422 exemplares de peixes com rede de espera e rede picaré.
LUCIA BEATRIZ LOPES FERREIRA MARDINI   +1 more
doaj  

Edad, crecimiento, mortalidad e incidencia de las variaciones del nivel hidrométrico del río Paraná en la abundancia del surubí pintado (Pseudoplatystoma corruscans) [PDF]

open access: yes, 2013
Los objetivos son determinar los parámetros de crecimiento, índice de mortalidad e incidencia de las variaciones del nivel hidrométrico en la abundancia de las poblaciones del surubí pintado.
Baigún, Claudio Rafael M.   +2 more
core  

Composição e distribuição de comunidades de peixes na planície de inundação do rio Taquari, Pantanal, MS. [PDF]

open access: yes, 2014
Este estudo teve o objetivo de caracterizar a ictiofauna da planície de inundação bacia do baixo Rio Taquari (Pantanal, MS) quanto à estrutura e diversidade de suas comunidades.
AOKI, C.   +3 more
core  

ESTRUTURA POPULACIONAL E CONDIÇÃO FISIOLÓGICA DE Hoplias malabaricus (BLOCH, 1794) NO BAIXO RIO CAPIBARIBE [PDF]

open access: yes, 2017
This research aimed to determine population structure and physiological condition of Hoplias malabaricus in the Capibaribe river (PE), northeastern Brazil. Monthly sampling were carried out between September/2013 and August/2014, using gill nets. The sex
Collier, Carolina A   +4 more
core   +1 more source

Gape size influences seasonal patterns of piscivore diets in three Neotropical rivers [PDF]

open access: yes, 2011
We examined diets of four piscivores, two in the order Perciformes (Cichla temensis and C. orinocensis) and two in the order Characiformes (Boulengerella cuvieri and B.
Layman, Craig A., Montaña, Carmen G.
core  

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