Buscar
Mostrando ítems 1-10 de 36194
The fish fauna in the fish passage at the Ourinhos Dam, Paranapanema River
(SOC BRASILEIRA ICTIOLOGIASAO PAULO, 2012)
The composition and abundance of the fish assemblage were evaluated in the fish ladder of Ourinhos Dam, the newest dam (closed in 2005) in the cascade of dams constructed on the Paranapanema River. Samplings were carried ...
Fish ladders select fish traits on migration - still a growing problem for natural fish populations
(Taylor & Francis Ltd, 2009-01-01)
We investigated the potential selective effect of fish ladders on physiological and morphological profiles of the curimbata, Prochilodus lineatus, during reproductive migration in Brazil. We registered sex, body weight and ...
Fish ladders select fish traits on migration - still a growing problem for natural fish populations
(Taylor & Francis Ltd, 2009-01-01)
We investigated the potential selective effect of fish ladders on physiological and morphological profiles of the curimbata, Prochilodus lineatus, during reproductive migration in Brazil. We registered sex, body weight and ...
Morphologically differentiated sex chromosomes in neotropical freshwater fish
(2001-12-01)
A general survey of the occurrence of morphologically differentiated sex chromosomes in the neotropical freshwater fishes is presented. The total number of 32 occurrences involving simple XX-XY and ZZ-ZW, and multiple ...
Perfil hematológico de tilápias-do-nilo alimentadas com die-tas contendo diferentes lipídeos e estimuladas por baixa temperatura
(2015-01-01)
The goal of this paper was to determine the effects of seven diets with differents fatty acids sources in hematology of Nile tilapia before and after cold stimulus. Seven diets, with 3% of fatty acid source, were formulated: ...
Reproductive migration of fish and movement in a series of reservoirs in the Upper Parana River basin, Brazil
(Wiley-Blackwell, 2013-10-01)
AbstractThis study evaluates the effectiveness of two fish passes at two hydropower dams (Canoas I and II) in the Upper Parana basin, which form part of a cascade of three reservoirs. Fish from 12 migratory species (3089 ...
Fish functional diversity as an indicator of resilience to industrial fishing in Patagonia Argentina
(Wiley Blackwell Publishing, Inc, 2021-08)
The relationship between fish functional diversity and fishing levels at which its baselines shift is important to identify the consequences of fishing in ecosystem functioning. For the first time, the authors of this study ...