Reproductive Biology of Siluronodon auritus (Geoffroy Saint-Hilaire, 1809) in the Mid Cross River Flood System, Southeastern Nigeria

American Journal of Science and Technology

UnekeBilikis Iyabo¹ 

[1] Dept. of Applied Biology, Faculty of Biological Sciences, Ebonyi State University, Abakaliki, Ebonyi State, Nigeria.

关键词: Fecundity;    Gonad Somatic Index;    Condition Factor;    Siluronodon auritus and Cross River;   

学科分类：工程和技术（综合）

来源: AASCIT

【 摘 要 】

Fecundity, egg, size, condition factor, gonad somatic index etc of the specie Siluronodon auritus were studied between the months of April- August 2008, in the mid Cross River flood system. The total of 350 fishes that were studied showed the specie to be a multiple spawner and the breeding period was identified to be between May and June. The fecundity of the population varied from 6031 eggs (L= 21.4cm, W= 35.3g) and 1130 eggs (L=16.0cm and W=23.1g). A mean relative fecundity of this population of 270 eggs/cm or 155 egg of the fish was obtained with the total length measured in (cm) and weight (g). The condition factor (k) of the population varied from 0.96-1.43 with 0.634 as the mean; 53.7% had higher condition factor than the mean and 46.1% had condition factor below unity indicating that the population was slightly in good condition. The fecundity and condition factor obtained in this study are evidence that the Cross- River basin population of S. auritus can make or provide excellent bloodstock.

【 授权许可】

Unknown