Results 11 to 20 of about 1,225 (184)
Spatial variations in fish assemblage structure in a southeastern Brazilian reservoir [PDF]
Brazilian Journal of BiologyWe assessed the fish assemblage structure and composition of Nova Ponte Reservoir (Araguari River, Upper Paraná Basin, Brazil). We observed significant differences in abundance (p = 0.0003), richness (p = 0.0005) and diversity (p = 0.02) between ...
B. O. Sanches +4 more
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Adaptações de juvenis de piava (Leporinus obtusidens) expostos í hipóxia
Boletim do Instituto de Pesca, 2018 A piava (Leporinus obtusidens) é um peixe migrador de água doce. São relativamente escassas as informações de adaptações hematológicas e/ou morfológicas apresentadas por peixes tropicais de água doce quando submetidos a concentrações crônicas e ...
Jhon Edison JIMENEZ, Evoy ZANIBONI-FILHO
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Evaluation of fish passage through the Igarapé Dam fish ladder (rio Paraopeba, Brazil), using marking and recapture [PDF]
Neotropical Ichthyology, 2007 Rio Paraopeba, a tributary of rio São Francisco, has a six-meter high dam, built in 1978 to divert water to the Igarapé Thermal Power Plant. In 1994, a fish ladder was built at this dam.
Carlos Bernardo Mascarenhas Alves
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Glyphosate-based herbicide affects biochemical parameters in Rhamdia quelen (Quoy & Gaimard, 1824 and) Leporinus obtusidens (Valenciennes, 1837) [PDF]
Neotropical Ichthyology, 2015 Rhamdia quelen (silver catfish) and Leporinus obtusidens (piava) were exposed to a commercial formulation Roundup(r), a glyphosate-based herbicide at concentrations of 0.2 or 0.4 mg/L for 96 h.
Vania Lucia Loro +8 more
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Incubação de ovos e larvicultura da piava, Leporinus obtusidens: efeito do pH
Boletim do Instituto de Pesca, 2018 O objetivo deste estudo foi avaliar o efeito do pH da água durante a incubação dos ovos e a larvicultura de Leporinus obtusidens. Durante a incubação dos ovos foram testados os pH 5,0, 7,0 e 9,0.
Mário Augusto GOSMANN +1 more
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Acta Scientiarum: Biological Sciences, 2009 To evaluate circadian changes in thyroid hormones of piau, Leporinus obtusidens Valenciennes, 1847, (Osteichthyes, Anostomidae) after feeding were determined the plasma levels of thyroid hormones (TH) of 128 fishes, same age, immature, both sexes ...
Walter Dias Junior +1 more
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External Morphology of Leporinus oliveirai (Characiformes: Anostomidae) During Early Life Stages. [PDF]
J MorpholHerein, we describe the early development of Leporinus oliveirai, a recently described species, documenting its external morphology with photographs and illustrations. The ontogeny of L. oliveirai is compared with other anostomids and developmental patterns are described for the family.
Ito ISB +4 more
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Ontogeny of the Skeleton of Leporinus oliveirai (Characiformes, Anotomidae). [PDF]
J MorpholIn this study, we provide the first complete description of the skeleton ontogeny of an anostomid. The developmental sequence of 141 bony elements is described and illustrated. The main discoveries are numerous conical teeth on the premaxilla and dentary that are replaced with three or four large incisiform multicuspid teeth, that become unicuspid in ...
Boaretto MP +2 more
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Semina: Ciências Agrárias, 2013 The aim of this study was evaluate the replacement of soybean meal by linseed meal on growth of piava juveniles. The experiment was carried on fish farming laboratory of UFSM/CESNORS, on March to April, 2011.
Dirleise Pianesso +6 more
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Acta Scientiarum: Biological Sciences, 2009 To evaluate circadian changes in thyroid hormones of piau, Leporinusobtusidens Valenciennes, 1847, (Osteichthyes, Anostomidae) after feeding were determined the plasma levels of thyroid hormones (TH) of 128 fishes, same age, immature, both sexes ...
Walter Dias Junior +1 more
doaj +1 more source