Buscar
Mostrando ítems 21-30 de 16133
Genetic conservation of Brazilian fishes - Present state and perspectives
(2004-12-01)
Natural environments have been worldwide affected by the growing impact of anthropogenic actions that promote the reduction or the extinction of several vertebrate species. Aquatic ecosystems represent one of the most ...
Knodus dorsomaculatus (Characiformes: Characidae), a new species from Teles Pires River, Tapajos River basin, Brazil
(WILEY-BLACKWELL, 2010)
Knodus dorsomaculatus, a new species, is described from Teles Pires River, a tributary of the Tapajos River, Brazil. It can be distinguished from its congeners by the presence of a conspicuous dark blotch on the base of ...
When does this fish spawn? Fishermen's local knowledge of migration and reproduction of Brazilian coastal fishes
(SpringerNew YorkEUA, 2006)
Interference of cage fish farm on diet, condition factor and numeric abundance on wild fish in a Neotropical reservoir
(2013-11-15)
Historically, the ichthyofauna of large Brazilian rivers has been subject to anthropogenic interference, such as impoundments. Currently, cage fish farming systems are a new source of impact on aquatic ecosystems. The ...
Interference of cage fish farm on diet, condition factor and numeric abundance on wild fish in a Neotropical reservoir
(2013-11-15)
Historically, the ichthyofauna of large Brazilian rivers has been subject to anthropogenic interference, such as impoundments. Currently, cage fish farming systems are a new source of impact on aquatic ecosystems. The ...
Two new species and a review of the inseminating freshwater fish genus Monotocheirodon (Characiformes: Characidae) from Peru and Bolivia
(2013-07-26)
Two new species of inseminating freshwater fishes of the genus Monotocheirodon, family Characidae, are described from Peru. Males and females of both new species have an external, visually obvious urogenital papilla that ...
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 ...
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 ...
A new species of poeciliid fish, Poeciliopsis santaelena, from Peninsula Santa Elena, Area de Conservación Guanacaste, Costa Rica
(Universidad de Costa Rica, 2008)
Two 5S rDNA arrays in Neotropical fish species: is it a general rule for fishes ?
(Kluwer Academic Publ, 2001-01-01)
In this paper we describe Southern blot hybridization results probed with 5S rRNA genes for several Neotropical fish species representing different taxonomic groups. All the studied species showed a general trend with the ...