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

Abstract

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.

Keywords

• African catfish,Induced breeding,fertilization,Hatchability survival

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