PRELIMINARY REPORT ON GENETIC IMPROVEMENT OF Heterobranchus longifilis THROUGH INTRASPECIFIC HYBRIDIZATION OF DIFFERENT STRAINS FROM NIGERIA

Öz

Three strains of Heterobranchus longifilis were ob­tained from different ecological zones in Nigeria namely Nassarawa (NS); Kainji (KK) and Ajase Ipo, (SW).  Six intra specific progenies were obtained from the cross of the three strains from the ecological zones, hatchability was highest (94.2%) in KK x KK (Kainji strains); while the intra specific cross between KK x NS had the highest (80.0%) hatchability. Gen­eral observation of the study point to the fact that intra specific crosses involving SW and NS male have bet­ter survival rates.

Anahtar Kelimeler

• African catfish,Induced breeding,fertilization,Hatchability survival

Kaynakça

1. Aluko, P.O. (1998): Growth characteristics of the parental, F1, F2 and backcross generation of the hybrids between Heterobranchus longifilis and Clarias anguillaris. West African Journal of Biological Sciences, 8: 16-21.
2. De Graaf, G.J., Galemoni, F., Banzoussi, B. (1995): The Artificial Reproduction and Fingerlinging Production of the African Catfish, Clarias gariepinus (Burchell, 1822) in protected and unprotected ponds. Aquaculture Research, 26: 233-242.
3. Gjedrem T.G., Thodesen, J. (2005): Selection and Breeding programs in Aquaculture. 1st Ed. New York. Springer, p 364.
4. Haniffa, M.A.K., Sridhar, S. (2002): Induced spawning of spotted murrel (Channa punctatus) and catfish (Heterebranchus fossils) using human chorionic gonadotropin and synthetic hormone (ovaprim). Veterinary Archive, 72(1): 51-56.
5. Huisman, E.A., Richter, C.J. (1987): Reproduction, growth, health control and Aquacultural potential of the African catfish, Clarias gariepinus (Burchell, 1822). Aquaculture, 68: 1-14.
6. Nwadukwe, F.O. (1995): Hatchery propagation of five hybrid groups by artificial Hybridizations of Clarias gariepinus (B) and Heterobranchus longifilis (Val) (Clariidae) using dry powdered carp pituitary hormone. Journal of Aquaculture in the Tropics, 10:1-11
7. Nwokoye, C.O., Nwuba, L.A., Eyo, J.E. (2007): Induced propagation of African clariid catfish, Heterobranchus bidorsalis (Geoffrey Saint Hillarie, 1809) using synthetic and homoplastic hormones. African Journal of Biotechnology, 6(23): 2687-2693.
8. Olufeagba S.O. (1999): Induced triploid Heterobranchus longifilis and its Aquacultural potentials (Val. 1840) (Family: Clariidae). Ph. D. Thesis submitted to Biological Sci¬ence Department, University of Ilorin. Pp 164

9. Olufeagba, S.O., Aluko P.P., Omotosho, J.S. (1999): Karyomorphology of the African catfish, Heterobranchus longifilis (Val). Nigerian Journal of Genetics, 4: 23-29
10. Salami, A.A., Fagbenro, O.A., Sydenham, D.H.J. (1993): The production and Growth of Clarrid Catfish Hybrids in concrete tanks. The Israeli J of Aquaculture-Bamidgeh, 45(1): 18-25.