International Journal of Fisheries and Aquatic Studies
2015, Vol. 2, Issue 5, Part D
Age and growth of catfish Synodontis schall, (Bloch and Schneider, 1801) in the Lower Benue River, at Makurdi, NigeriaAuthor(s):
Akombo P.M, Akange E.T, Atile J.IAbstract:
The age and growth of Synodontis schall in River Benue at Makurdi were studied over a 24- month period (January, 2009-December, 2010). A total number of 635 specimens comprising of 329 males and 306 females with the size range of 6.1 - 30.40 cm (mean = 12.04 ± 0.11) were studied. The weight ranged from 53.0 - 864g (mean = 57.71 ± 2.26). Asymptotic length (L∞) was 30.05cm, 30.00cm and 28.50cm in the females, males and combined sexes respectively. Growth rate (K1-yr) was found to be 0.580, 0.570 and 0.430 while the growth performance index (Ø’) was 2.756, 2.645 and 2.946in the females, males and combined sexes respectively. The t0 (a time in the growth history of fish at which the fish would be zero sized) values were all positive as follows 0.830 in the females, 0.39 in the males and 0.00 in the combined sexes.Pages: 184-190 | 787 Views 9 DownloadsDownload Full Article:
How to cite this article:
Akombo P.M, Akange E.T, Atile J.I. Age and growth of catfish Synodontis schall, (Bloch and Schneider, 1801) in the Lower Benue River, at Makurdi, Nigeria. International Journal of Fisheries and Aquatic Studies. 2015; 2(5): 184-190.