Induced diploid meiogynogenesis in the African clariid catfish Heterobranchus longifilis (Valenciennes, 1840) (Pisces: Clariidae)

Olufeagba, S.O. and Aluko, P.O. and Omotosho, J.S. and Oyewole, S.O. and Raji, A. (2001) Induced diploid meiogynogenesis in the African clariid catfish Heterobranchus longifilis (Valenciennes, 1840) (Pisces: Clariidae). In: 14th Annual Conference of the Fisheries Society of Nigeria (FISON) , 19-23 January 1998 ,Ibadan, Nigeria, pp. 62-65.

[img]
Preview
PDF (The document's language is English .) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (125Kb) | Preview

Abstract

Diploid meiotic gynogenesis was induced in African catfish, Heterobranchus longifilis by injection of 0.5ml/kg ovaprim on the breeders, followed by application of UV light irradiation on the spermatozoa and temperature shocking of activated eggs. Diploidy was restored by shocking haploid activated eggs at 5 degree C for 40 minutes. The normal control spermatozoa did not receive any UV irradiation nor temperature shock, while the haploid control spermatozoa were irradiated, but did not receive cold shock. The percentage hatchability in the treated group was 25%, while in the control it was 53%. Less than 15 fingerlings had morphological aberrations. After two weeks of indoor rearing, the survival percentage of the treated group was 45% in the control experiment. Cytogenetic analysis of chromosomes revealed 25 chromosomes in the haploid embryo and 50 chromosomes each in diploid gynogenesis and normal diploid control

Item Type: Conference or Workshop Item
Title: Induced diploid meiogynogenesis in the African clariid catfish Heterobranchus longifilis (Valenciennes, 1840) (Pisces: Clariidae)
Personal Creator/Author:
CreatorsEmail
Olufeagba, S.O.
Aluko, P.O.
Omotosho, J.S.
Oyewole, S.O.
Raji, A.
Page Range: pp. 62-65
Date: 2001
Event Title: 14th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: Ibadan, Nigeria
Event Dates: 19-23 January 1998
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria; aquaculture; aquaculture techniques; biotechnology; fish culture; induced breeding; Heterobranchus longifilis
Subjects: Aquaculture
Biology
Item ID: 3659
Depositing User: Ms Maria Kalentsits
Date Deposited: 11 Jul 2010 09:49
Last Modified: 29 Sep 2011 17:00
URI: http://aquaticcommons.org/id/eprint/3659

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...