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Development of the neotropical catfish Rhamdia quelen (Siluriformes, Heptapteridae) incubated in different temperature regimes

Published online by Cambridge University Press:  27 October 2009

Alana Marielle Rodrigues-Galdino
Affiliation:
Universidade Federal do Paraná, Departamento de Biologia Celular, PO Box 19031, CEP 81531–990, Curitiba–PR, Brazil.
Camila Valente Maiolino
Affiliation:
Universidade Federal do Paraná, Departamento de Biologia Celular, PO Box 19031, CEP 81531–990, Curitiba–PR, Brazil.
Mariana Forgati
Affiliation:
Universidade Federal do Paraná, Departamento de Biologia Celular, PO Box 19031, CEP 81531–990, Curitiba–PR, Brazil.
Lucélia Donatti
Affiliation:
Universidade Federal do Paraná, Departamento de Biologia Celular, PO Box 19031, CEP 81531–990, Curitiba–PR, Brazil.
Jorge Daniel Mikos
Affiliation:
Pontifícia Universidade Católica do Paraná, Setor de Piscicultura (LAPEP), R. Benjamim Claudino Barbosa n° 3184, CEP 83005–970 – São José dos Pinhais, PR, Brazil.
Paulo César Falanghe Carneiro
Affiliation:
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)–Tabuleiros Costeiros, PO Box 44, CEP 49025–040, Aracaju, SE, Brazil.
Flavia Sant'Anna Rios*
Affiliation:
Universidade Federal do Paraná, Departamento de Biologia Celular, PO Box 19031, CEP 81531–990, Curitiba–PR, Brazil. Universidade Federal do Paraná, Departamento de Biologia Celular, PO Box 19031, CEP 81531–990, Curitiba–PR, Brazil.
*
All correspondence to: Flavia S. Rios. Universidade Federal do Paraná, Departamento de Biologia Celular, PO Box 19031, CEP 81531–990, Curitiba–PR, Brazil. e-mail: flaviasrios@ufpr.br

Summary

The developmental stages for the embryonic and larval periods of the silver catfish (Rhamdia quelen) kept at different temperatures (21, 24, 27 and 30°C) are described. Fish were analysed under light and scanning electron microscopy. For embryonic development, we described 25 stages, which were grouped into seven periods named zygote, cleavage, blastula, gastrula, segmentation, pharyngula and hatching periods. For larval development, we defined three stages (early, mid, and late larvae). Additionally, the main ontogenetic events during the post-larvae and early juvenile periods were also described. This species presents a well developped lateral line and chemosensory systems that grow up during the larval period, maturing in the post-larvae. All tested temperatures are viable to R. quelen development, but a shorter incubation period was necessary to complete the development at lower temperatures. However, some malformations (heart edema) were verified at 30°C.

Information

Type
Research Article
Copyright
Copyright © Cambridge University Press 2009

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