Results 21 to 30 of about 2,582 (102)

Transições de uso e ocupação do solo nas áreas estratégicas do PAN Paraíba do Sul após uma década de esforços conservacionistas [PDF]

open access: yes, 2023
The Plano de Ação Nacional para Conservação das Espécies Aquáticas da Bacia do rio Paraíba do Sul is a policy that aims to reduce threats to the target species of the Lista Nacional Oficial de Espécies da Fauna Ameaçadas de Extinção.
Bissoli de Moraes, Mariana   +3 more
core   +2 more sources

A phylogenetic analysis of Brycon and Henochilus (Characiformes, Characidae, Bryconinae) based on the mitochondrial gene 16S rRNA [PDF]

open access: yes, 2008
The genus Brycon, the largest subunit of the Bryconinae, has 42 valid species distributed from southern Mexico to the La Plata River in Argentina. Henochilus is a monotypic genus, comprising a single species (H.
HILSDORF, Silva   +3 more
core   +2 more sources

Population genetic structuring in pacu (Piaractus mesopotamicus) across the Paraná-Paraguay basin: evidence from microsatellites [PDF]

open access: yes, 2009
The Paraná-Paraguay basin encompasses central western Brazil, northeastern Paraguay, eastern Bolivia and northern Argentina. The Pantanal is a flooded plain with marked dry and rainy seasons that, due to its soil characteristics and low declivity, has a ...
CALCAGNOTTO, Daniela, DESALLE, Rob
core   +1 more source

Biologia e características populacionais de uma espécie rara de Pseudopimelodidae da Bacia do Alto Rio Paraná [PDF]

open access: yes, 2010
Streams contain an expressive fraction of the South American fish diversity, mostly composed of small-sized, endemic, and rare species. Populational, reproductive, and diet aspects of Microglanis garavelloi were studied, aiming to make a wide ...
ARCIFA, Marlene Sofia   +1 more
core   +1 more source

Endemicity Analysis of the Ichtyofauna of the Rio Doce Basin, Southeastern Brazil [PDF]

open access: yes, 2022
The Rio Doce is a very important freshwater system in Brazil running through the Atlantic Forest, however available information about its biodiversity is scarce.
Casagranda, Maria Dolores   +2 more
core   +1 more source

Semen Cryopreservation in Brazilian Freshwater Fish: Advances and Main Challenges [PDF]

open access: yes, 2016
Studies on semen cryopreservation in Brazilian freshwater fish have been growing in number of publications and investigated species. Despite this apparent increase in research, standardization of cryoprotocols is still missing, making it clear that the ...
Cabrita, Elsa   +3 more
core   +1 more source

Parȃmetros biológicos e tamanho mínimo de captura do Brycon falcatus (Peixes: Characidae) na bacia do rio Guaporé Mato Grosso, Brasil [PDF]

open access: yes, 2018
O tamanho mínimo de captura do matrinxa (Brycon falcatus) estabelecido na Lei N° 9 096 de 16 de janeiro de 2009 é 35 cm, este comprimento foi considerado inadequado pelos pescadores profissionais de Vila Bela da Santíssima Trindade, rio Guaporé-MT. Sendo
Alves De Lima, Angela P.   +6 more
core   +1 more source

Conservation of Brycon orbignyanus natural populations and stocks for their reproductive, genetic, environmental sustainability: A model for threatened species of extinction [PDF]

open access: yes, 2009
Several ecological and climatic factors, especially those related to human activities, have been contributing to the disappearance of natural populations of piracanjuba (Brycon orbignyanus). Due to the importance of these fi sh to the ecosystems in which
Lopera-Barrero, N. M.
core   +2 more sources

Progress, challenges and perspectives on fish gamete cryopreservation: A mini-review [PDF]

open access: yes, 2017
Protocols for the cryopreservation of fish gametes have been developed for many different fish species, in special, freshwater salmonids and cyprinids.
Asturiano, Juan F.   +2 more
core   +2 more sources

Calibration Method and Material Constants of an Anisotropic, Linearly Elastic and Perfectly Plastic Mohr–Coulomb Constitutive Model for Opalinus Clay

open access: yesRock Mechanics and Rock Engineering, 2023
Nagra, the cooperative for developing and implementing a long-term radioactive waste depository in Switzerland, identified Opalinus Clay as the most suitable host rock for deep geological containment. This paper deals with those features of Opalinus Clay
A. N. Nordas   +3 more
semanticscholar   +1 more source

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