Comparative assessment of reproductive performance in purebred Clarias gariepinus and hybrid (Clarias nieuhofii x Clarias gariepinus)

Sivananthan Nair, Deepshika Nair (2024) Comparative assessment of reproductive performance in purebred Clarias gariepinus and hybrid (Clarias nieuhofii x Clarias gariepinus). [Project Paper] (Submitted)

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Abstract

The African catfish, Clarias gariepinus, is a widely adopted culture species globally due to its hardy nature and adaptation to a wide range of climatic conditions. Crossbreeding can increase hybrid vigour through heterosis in Clarias species with an overall increase in their average performance characteristics. Therefore, this study investigated the embryonic development of pure breed Clarias gariepinus and hybrid C. nieuhofii with C. gariepinus under similar laboratory conditions. Observations on the embryonic development of Clarias gariepinus and hybridized form with C. nieuhofii for a 24 hour period was microscopically monitored and recorded. The pure cross of C. gariepinus successfully fertilized and hatched within 24 hours. However, there was fertilization failure and lack of progress in embryonic development for the hybrid form of Clarias nieuhofii with Clarias gariepinus under similar conditions. This study on embryonic development of C. gariepinus has bridged a gap in the knowledge of developing eggs and larvae morphology of the species in Malaysia. Although the attempted hybridization of C. gariepinus with C. nieuhofii, the two common species of catfish in Malaysia has failed, further experimentation should be conducted to address the intrinsic and extrinsic variables that are known to impede embryogenesis in hybridization experiments to optimise the process.

Item Type:	Project Paper
Subjects:	S Agriculture > SH Aquaculture. Fisheries. Angling
Faculty:	Faculty of Agriculture and Forestry Sciences
Depositing User:	Mr. Azman Mohamad
Date Deposited:	08 Dec 2025 08:30
Last Modified:	08 Dec 2025 08:30
URI:	http://psaspb.upm.edu.my/id/eprint/2417

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