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Emmanuel Vreven
Biology
Vertebrates
Vertebrates
Publication details
Lederoun, D., Laleye, P., Vreven, E. & Vandewalle, P. 2016. ‘Length-weight and length-length relationships and condition factors of 30 actinopterygian fish from the Mono basin
(Benin and Togo, West Africa)’. H. Persat (ed), Cybium 40 (4): 267-274. (PR).
Article in a scientific Journal / Article in a Journal
Based on their catches, this study describes the length-weight relationships (LWR s), length-length
relationships (LLRs), and condition factors (K) of the 30 most common actinopterygian fish found in the Mono
basin. A total of 6,591 specimens were caught, using multiple gears and fishing methods, between February 2011
and May 2014. The allometric b coefficient of the LWRs (BW = a × TLb) ranged between 2.650 for Polypterus
senegalus and 3.468 for Awaous lateristriga with an average of 2.993 ± 0.177. Thirteen species had an isometric
growth, seven species a negative allometric growth, and for the remaining ten species, growth was positive
allometric. Regarding the LLRs, the coefficient of determination r2 was significant and ranged from 0.905 in
Petrocephalus bovei to 0.999 in Parachanna obscura with an average of 0.973 ± 0.027. The condition factor
(K = BW ⁄ TLb × 100) ranged from 0.406 ± 0.044 in A. lateristriga to 2.374 ± 0.805 in Lates niloticus, with an
overall average of 1.145 ± 0.161