YOLK CONSUMPTION DURING EMBRYONARY DEVELOPMENT OF SALMON-RED RAINBOWFISH, Glossolepis incisus. WEBER 1907 (Melanotaeniidae)

Authors

  • André Veloso Ferreria Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, Rio de Janeiro, Brasil
  • Manuel Vazquez Vidal Júnior Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, Rio de Janeiro, Brasil
  • Dalcio Ricardo Andrade Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, Rio de Janeiro, Brasil
  • Pedro Pierro Mendonça Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, Rio de Janeiro, Brasil
  • George Shigueki Yasui Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, Rio de Janeiro, Brasil
  • Douglas Cruz Mattos Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, Rio de Janeiro, Brasil

Keywords:

Ornamental Fish

Abstract

The consumption of yolk on development of embryos of the salmon-red rainbowfish (Glossolepis incisus) was examined under controlled hatchery conditions. Naturally-fertilized eggs, obtained by natural spawning of cultured adults, were stocked into floating sieves in 40L flow-through aquaria at temperature of 28°C. A photoperiod of 16L: 8D was maintained. The embryos have a long period of hatching about 7 days at 28ºC, consuming almost all yolk during the early stages into the eggs. At hatching the newly-hatched larvae yolk-sac is reduced, but still present and the larvae are strongly swimmers and have a functional mouth, enteric peristaltic movement and anus opened suggesting an initial exogenous feeding stage. Differently to others species of tropical fishes that have a long time for the weaning, larvae of salmon-red rainbowfish are already for becoming first-feeding larvae in few hours after eclosion.

KEY WORDS: Early development, ontogeny, ornamental fish.

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Published

2009-09-30

How to Cite

FERRERIA, André Veloso; JÚNIOR, Manuel Vazquez Vidal; ANDRADE, Dalcio Ricardo; MENDONÇA, Pedro Pierro; YASUI, George Shigueki; MATTOS, Douglas Cruz. YOLK CONSUMPTION DURING EMBRYONARY DEVELOPMENT OF SALMON-RED RAINBOWFISH, Glossolepis incisus. WEBER 1907 (Melanotaeniidae). Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 10, n. 3, p. 721–729, 2009. Disponível em: https://revistas.ufg.br/vet/article/view/1666. Acesso em: 5 dec. 2025.

Issue

Vol. 10 No. 3 (2009)

Section

Animal Production

License

Copyright (c) 2009 Brazilian Animal Science/ Ciência Animal Brasileira

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