Seasonal numerical abundance and determination of size distribution of Bagrus docmac from Lake Akata, Benue State, Nigeria

Abstract

Seasonal numerical abundance and determination of size distribution of Bagrus docmac in Lake Akata was conducted between April 2018  and May 2019. The result revealed that Bagrus docmac was numerous in February (17.9%) and also well represented November (14.7%) and in December (14.4%) but had low  percentage abundance in June (9.7%) and July (7.3%). The monthly mean sizes of Bagrus docmac showed that the highest monthly mean standard length (31.00cm) and mean weight (475.0g) were obtained in the month of October, while the least  standard length 21.45± 2.91cm and weight 297.2±66.8g were recorded in August. It could be concluded that Bagrus docmac had a seasonal trend in abundance, also their variation in the monthly mean standard lengths was not significant (p>0.05) in males and females.