EMBRYONIC DEVELOPMENT OF CLARIAS BATRACHUS UNDER THE INFLUENCE OF AERATION AND WATER FLOW

Authors

  • Sk. Mustafizur Rahman Fisheries and Marine Resource Technology Discipline
  • Md. Ahasan Habib Fisheries and Marine Resource Technology Discipline
  • Quazi Zahangir Hossain Environmental Science Discipline Khulna University, Khulna
  • Md. Noman Siddiqui Fisheries and Marine Resource Technology Discipline
  • Md. Mostafizur Rahman Fisheries and Marine Resource Technology Discipline
  • Md. Nazmul Ahsan Fisheries and Marine Resource Technology Discipline

DOI:

https://doi.org/10.3126/eco.v18i0.9395

Keywords:

Clarias batrachus, Embryonic development, Water flow, Aeration, Hatching

Abstract

Specific investigation on the time (h) required for catfish, Clarias batrachus, embryos to reach various early developmental stages were carried out under different experimental conditions. Five hundred fertilized eggs were incubated in tray (28ºC–30.5ºC) with continuous water flow and aeration (T1), with only continuous water flow (T2) or aeration (T3) and without continuous water flow and aeration (T4). Fertilized embryos hatched successfully in all treatments except for T4. Time requirements for 2-cell, 4-cell, 8-cell, morula, germinal ring, yolk-plug, twisting movement, prehatching and hatching were comparable for all treatments. However, developmental speed was ceased from yolk-plug stage for T4. Time requirements for two-cell, four-cell, eight-cell, morula, germinal ring, yolk-plug, twisting movement, and hatching were 0.43, 0.48, 0.53, 3.52, 6.07, 8.50, 15.04, 20.08, and 21.40 h, respectively for T1; 0.44, 0.47, 0.51, 3.49, 6.10, 8.51, 15.13, 20.19, and 21.56 h, respectively for T2; 0.50, 0.53, 0.59, 3.52, 6.13, 8.53, 15.11, 20.18, and 22.13 h, respectively for T3. Fertilized eggs of C. batrachus incubated in tray with only aeration (T3) is sufficient for successful hatching and could be cost-effective for hatchery operation.

DOI: http://dx.doi.org/10.3126/eco.v18i0.9395

Ecoprint: An International Journal of Ecology

Vol. 18, 2011

Page:

Uploaded date: 12/20/2013

 

Downloads

Download data is not yet available.
Abstract
1039
PDF
633

Downloads

Published

2013-12-20

How to Cite

Rahman, S. M., Habib, M. A., Hossain, Q. Z., Siddiqui, M. N., Rahman, M. M., & Ahsan, M. N. (2013). EMBRYONIC DEVELOPMENT OF CLARIAS BATRACHUS UNDER THE INFLUENCE OF AERATION AND WATER FLOW. Ecoprint: An International Journal of Ecology, 18, 25–31. https://doi.org/10.3126/eco.v18i0.9395

Issue

Section

Articles