Spawning Migration
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Upstream and downstream migration speed of Prochilodus costatus (Characiformes: Prochilodontidae) in upper São Francisco basin, Brazil
RESUMO Detalhes acerca da dinâmica migratória de peixes neotropicais são pouco conhecidos. O objetivo deste estudo foi analisar as velocidades em migração ascendente (reprodutiva) e descendente (pós-reprodutiva) da curimatá-pioa (Prochilodus costatus) no rio São Francisco, Brasil. A migração ascendente concentrou-se nos meses de outubro e novembro,
Neotrop. ichthyol.. Publicado em: 18/07/2019
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2. Reproduction, feeding and migration patterns of Prochilodus nigricans (Characiformes: Prochilodontidae) in northeastern Ecuador
ABSTRACT The black prochilodus, Prochilodus nigricans, is an important food fish distributed throughout aquatic habitats of the Ecuadorian Amazon. We sampled gonad weight, body condition, and feeding of this species to address the question of whether changes in these biological parameters are related to hydrological variation and migration patterns. High fre
Neotrop. ichthyol.. Publicado em: 05/10/2017
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3. Dinâmica populacional e Atherinella brasiliensis (Quoy &Gaimard, 1824) da praia de Itamambuca, Ubatuba (SP) / Populacional dynamic of the Atherinella brasiliensis (Quoy &Gaimard, 1824) from Itamambuca beach, Ubatuba (SP)
The present study analyzed the life history and metal levels of Atherinella brasiliensis from Itamambuca beach, Ubatuba (SP). Surveys were conducted monthly, in diurnal and nocturnal periods, between September 2003 and February 2005, in four stations at the beach and one at the Itamambuca river, using beach seine. Individuals showed daily migration into the
Publicado em: 2007
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4. Migração e movimentos do grumatã (Prochilodus lineatus, Valenciennes, 1836) (Characiformes, Prochilodontidae) no Rio dos Sinos, RS, Brasil, determinados por radiotelemetria
Life strategy, population structure and behavior are fundamental elements for the comprehension of fish biology and essential for conservation. The grumatã, (Prochilodus lineatus; Prochilodontidae) is a reophilic migratory species of economical importance for local fisheries. It is widely distributed in Brazil. During the last decades grumatã populations s
Publicado em: 2004
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5. Distribution and growth in adults of Macrobrachium acanthurus Wiegmann, (Decapoda, Palaemonidae) in a tropical coastal lagoon, Brazil
Macrobrachium acanthurus Wiegmann, 1836 is a Palaemonidae commonly found in Brazilian coastal environments. At Imboassica lagoon, located in the north of the State of Rio de Janeiro, it is found in two stages of its life cycle: as larvae and as reproductive adults. This work had as its goal the evaluation of adults distribution, estimating the weight/length
Revista Brasileira de Zoologia. Publicado em: 2002-12
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6. Body pool and synthesis of ascorbic acid in adult sea lamprey (Petromyzon marinus): An agnathan fish with gulonolactone oxidase activity
Although many vertebrates can synthesize ascorbic acid (vitamin C), it is still unclear from the evolutionary perspective when the ability to synthesize the vitamin first appeared in the animal kingdom and how frequently the trait has been lost. We report here ascorbic acid biosynthesis ability in sea lamprey (Petromyzon marinus) which represent the most anc
The National Academy of Sciences.
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7. Detection of truncated virus particles in a persistent RNA virus infection in vivo.
Infectious hematopoietic necrosis virus (IHNV) is a rhabdovirus which causes devastating epizootics of trout and salmon fry in hatcheries around the world. In laboratory and field studies, epizootic survivors are negative for infectious virus by plaque assay at about 50 days postexposure. Survivors are considered virus free with no sequelae and, thus, are su