Data/hora: 01/06/2024 10:25:31

Provedor de dados: | 3
País: | Brazil
Título: | Early ontogeny of Clarias gariepinus (Siluriformes, Clariidae) and aspects of its invasion potential in natural freshwater environments - doi: 10.4025/actascibiolsci.v35i3.12471
Autores: | Kipper, Darlon; Universidade Estadual de Maringá; Taguti, Tatia Leika; Universidade Estadual de Maringá; Bialetzki, Andréa; Universidade Estadual de Maringá; Makrakis, Maristela Cavicchioli; Universidade Estadual do Oeste do Paraná; Baumgartner, Gilmar; Universidade Estadual do Oeste do Paraná; Sanches, Paulo Vanderlei; Universidade Estadual do Oeste do Paraná.
Data: | 2013-08-01
Ano: | 2013
Palavras-chave: | 2.05.00.00-9 african catfish; Invasive species; Larvae; Juvenile of fish Ecologia.
Resumo: | This study aimed to describe the early development of Clarias gariepinus, a species that has been introduced into various watersheds worldwide, in order to help the identification of its eggs, larvae and juveniles in natural environments. The material used was obtained via induced spawning during 1999. After spawning, the periodicity of sampling varied according to ontogenic development. We analyzed 12 eggs, 146 larvae and 6 juveniles. Newly fertilized eggs are spherical, with a double membrane, the density of which varies. Initially the larvae have little pigmentation but this intensifies during development. They have four pairs of well-developed barbels, an elongated body, long dorsal and anal fins, no adipose fin and vesicles surrounding the finfold and barbels. The sequence of formation of the fins is: caudal, dorsal, anal, pectoral and pelvic. Growth pattern analysis revealed that metamorphosis usually occurs during the flexion stage. The reproductive performance of the species and its rapid early development favor aquaculture; however, they may also favor its invasion of natural environments, representing a threat for native populations.
Tipo: | Desenvolvimento ontogênico
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/12471

10.4025/actascibiolsci.v35i3.12471

Editor: | Universidade Estadual De Maringá

Formato:

application/pdf

application/pdf

Fonte:

Acta Scientiarum. Biological Sciences; v. 35, n. 3 (2013); 411-418

Acta Scientiarum. Biological Sciences; v. 35, n. 3 (2013); 411-418

Fonte:

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DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS  Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Biological Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).