EMBRYONIC DEVELOPMENT OF THE FIRE-EYE-TETRA Moenkhausia oligolepis (CHARACIFORMES: CHARACIDAE)

Author:

Santos Raquel Santos dos,Rodrigues Jeane Rodrigues,Cordeiro Jhennifer Gomes,Tercya Hadda,Leite Marissol,Costa Bruna Patrícia Dutra,da Silva Costa Raphael,Maximino CaioORCID,de Siqueira-Silva Diógenes HenriqueORCID

Abstract

AbstractThis study describes the embryonic development of Moenkhausia oligolepis in captive conditions. After fertilization, the embryos were collected every 10 min up to 2 h, every 20 min up to 4 h, and every 30 min until hatching. The fertilized eggs of M. oligolepis measured approximately 0.85 ± 0.5 mm and have an adhesive surface. The embryonic development lasted 14 hours at 25°C, with the Zygote, Cleavage, Blastula, Gastrula, Neurula and Segmentation phases. The hatching occurred in embryos around the 30-somites stage. Our results bring only the second description of embryonic development to a species of Moenkhausia genus, the first for the refereed species. Such data are of paramount importance considering the current conflicting state of this genus phylogenetic classification and may help taxonomic studies. Understand the biology of a species that is easily handling in captive conditions and has an ornamental appeal may assist studies in its reproduction in order to both, supply the aquarium market and help the species conservation in nature. Moreover, our data enable the M. oligolepis to be used as a model species in biotechnological applications, such germ cell transplantation approach.

Publisher

Cold Spring Harbor Laboratory

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