Buscar
Mostrando ítems 1-10 de 6996
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 ...
Spatial and temporal patterns of diversity and distribution of the Upper Jurua River fish community (Brazilian Amazon)
(Kluwer Academic PublDordrechtHolanda, 2000)
Deepwater fish assemblages at Isla del Coco National Park and Las Gemelas Seamount, Costa Rica
(Universidad de Costa Rica, 2012)
Drifting in a free-flowing river: Distribution of fish eggs and larvae in a small tributary of a Neotropical reservoir
(Revista Biota Neotropica, 2021-01-01)
We investigated spatial and temporal variations in the distribution of fish eggs and larvae in the Guarei River, a free-flowing tributary located in the upper section of the Jurumirim Reservoir, Paranapanema River, Brazil. ...
Fish gut content from biological collections as a tool for long-term environmental impact studies
(2018-06-01)
Most of the world’s fish fauna is suffering from different types of human impacts and new conservation tools are required. The fish diet analysis is a tool that has been used to evaluate degradation processes of aquatic ...
Big fish are the best: Seed dispersal of Bactris glaucescens by the pacu fish (Piaractus mesopotamicus) in the Pantanal, Brazil
(Wiley-Blackwell, 2008-05-01)
We studied the potential role as seed disperser of the pacu fish (Piaracrus mesopotamicus, Characidae) in the Pantanal of Brazil. The most important food item in the diet of the pacu in the wet season was fruits of the ...
Fish diversity in the cascade of reservoirs along the Paranapanema River, southeast Brazil
(Soc Brasileira Ictiologia, 2018-01-01)
The Paranapanema River is a major tributary of the upper Parana river basin. Eleven hydropower dams regulate its main course, but no study has investigated fish diversity in these impoundments at the basin-scale. The present ...
Dispersal of fish eggs and larvae in a cascade of small hydropower plants with fish ladders
(Springer, 2020-10-10)
This study was conducted to investigate fish eggs and larvae dispersal in a river stretch influenced by small hydropower plants in Southeast Brazil. The main hypothesis is that the downstream dispersal of free-flowing eggs ...
Successive seminal collections from Leiarius marmoratus during the reproductive period
(2021-11-01)
This study aim was to verify whether milt quality of male Leiarius marmoratus is maintained among successive samples collected during the same reproductive period. Ten reproductively mature males were used to evaluate four ...