Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094
July 2016 Vol. 5(7): pp. 315-324
Copyright © 2016 Global Advanced Research Journals

 

Full Length Research Paper

Length Weight Relationship, Condition Factor and Stomach Contents Analysis of Oreochromis Niloticus in Shirmu Lake Hungu, Kano state, Nigeria

Musa1, H., Ya’ u, A.A.1, Hassan1, M. I., and Bashir2, S. I.

 

1Department of Biology, Kano University of Science and Technology, Wudil, Kano

2Government Senior Secondary School Panda, Albasu Local Govt. Area, Kano State.

Email: kutamasak@yahoo.com

Accepted 20 July, 2016

 

Abstract

A study of length-weight relationship, condition factor and stomach contents analysis of Oreochromis niloticus in Shirmu Lake, Albasu local government, Kano state, Nigeria was carried out in which 320 samples of Oreochromis niloticus were collected by artisanal fishermen using various fishing gears including cast net, seine net and gill net. Water physico-chemical parameters of the lake which include Temperature, pH and Transparency were determined from the field with exception of pH which was determined in the laboratory. Temperature was determined by using thermometer with range of 25.67° - 30.33°C, pH was measured by pH meter (HI98130) with range of 6.00 - 7.40, transparency was determined using sacchi disc with values range of 18 – 22cm. The fish length and weight were measured using meter rule and electric weighting balance (T500Y) respectively. The values of regression co-efficient obtained using least square method for the length-weight relationship were 2.837 for male and 2.887 for the female and 2.498 for combined sex Oreochromis niloticus. This suggests a negative allometric growth with “b” value less than three (b<3) in all the specimens sampled. There was no significant difference at (p>0.05) in the male and female regression co-efficient. The result for the condition factor showed range of 0.043 – 0.081 for male and 0.0021 – 0.119 for female Oreochromis niloticus. These values for both species was less than one indicating the fishes in the lake were not favorable due to the unfavorable environmental conditions in the Lake. The food and feeding habit of the lake fishes were analyzed using frequency of occurrence method which revealed that herbivorous with plant materials 27.27%, insect materials 23.23%, detritus 6.06% and unidentified materials 43.44%.

Keywords: length-weight, condition factor, stomach contents, Oreochromis niloticus, physico-chemical parameters, Shirmu Lake.

   


 

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