Life cell imaging microscopy of embryo and early development of the Kol tooth-carp, Aphanius darabensis (Teleostei: Aphaniidae)

Esmaeili, Hamid Reza und Asrar, Tayebeh (2020): Life cell imaging microscopy of embryo and early development of the Kol tooth-carp, Aphanius darabensis (Teleostei: Aphaniidae). In: Acta Zoologica, Vol. 102, No. 3: pp. 265-274

Abstract

Information on early egg and embryogenesis is of critical importance in order to understand the basic biology, phylogenetic affinity, dietary requirement as well as environmental and ecological preference of a particular organism including fishes. Herein, we described and illustrated the life cell imaging microscopy of embryo and early development of larvae in the laboratory-reared fish, the Kol tooth-carp Aphanius darabensis. In A. darabensis, like several other teleost fishes, especially aphaniid, development and embryogenesis of the species initiate with external fertilization of sticky, spherical and transparent macrolecithal/telolecithal eggs with a mean diameter of 0.945-1.196 mm, and it continues with meroblastic/radial cleavage, blastulation/blastula formation, gastrulation/gastrula formation (in the result of epibolic cell migration) and organogenesis, leading to a hatched larvae of 4.5-5.2 mm in length with attached yolk sac at approximately 142 hr (at 24 +/- 1 degrees C) after fertilization which have been discussed in details. This study provides basic data for further research on reproductive biology, breeding, behaviour and conservation management of this endemic species.

• Item Type: Journal article
• Faculties: Geosciences > Department of Earth and Environmental Sciences
• Subjects: 500 Science > 550 Earth sciences and geology
• ISSN: 0001-7272
• Language: English