Length-Weight Relationship and Condition Factor of Heterotis niloticus from Amassoma flood plain, Niger Delta, Nigeria.
Journal Title: Applied Science Reports - Year 2013, Vol 4, Issue 1
Abstract
A study of length-weight relationship and condition factor of Heterotis niloticus from Amassoma River from was carried out for a period of six months (November – December, 2011 and January, 2012 for the dry season and May, June and July; 2012 for the Wet season). Length class marks 10cm and 15.5 were not caught. The Lowest frequency (1) was estimated for class mark 105.5cm with 10.6kg. The modal frequency (72) was estimated for 55.5 class mark with 5.6kg. The frequencies for the class marks: 25.5cm, 35.5cm, 45.5cm, 65.5cm, 75.5cm, 85.5cm, and 95.5cm with corresponding weight classes: 2.6kg, 3.6kg, 4.6kg, 6.6kg, 7.6kg, 8.6kg and 9.6kg were 6, 10, 30, 43, 15, 16 and 7 respectively. Generally, the frequency distribution of Heterotis niloticus from Amassoma flood plains was binomial. The length weight regression equation was Log W = 0.0974 + 3.17LogL with Correlation coefficient value of 0.960 and significance of correlation values of P<0.05,t=23.2,df=199. The “a” and “b” values were 0.0974 and 3.17 respectively indicating an allometric growth. The “r” value was positive (1.26). The condition index value range from 0.95 – 1.00 and the condition factor value was 0.98.
Authors and Affiliations
E. N Ezekiel, J. F. N Abowei
Keywords
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