< back to presentation overview

Details of the presentation
Presentation Poster presentation
Title Fish catch assessment of the Pendjari River, Benin

PDF Download ---
Short title Fisheries in the Pendjari River

Author(s) Ahouansou Montocho, S.(1); Lalèyè, P.(1); Linsenmair, K.E.(2)

Presenting author ---

Institution(s) (1) Laboratory of Hydrobiology and Aquaculture, University of Abomey-Calavi; (2) Department of Animal Ecology and Tropical Biology, University of Würzburg

Keywords fish; catch; gear; Pendjair River

Abstract Fishing in Pendjari River has been investigated from 2006 to 2008. The gears such as gill net, cast net, traps were found to be used by semi-professional fishermen and in addition seines and hooks by professional fishermen. The utilization of gear type depends on the hydrological seasonality. The duration of fishing was estimated to reach 6 h per day for active gears (cast net, seine) and 12 h per day for passive gears (gill net, traps, hooks). The highest and the lowest CPUE (catch per unit effort) were recorded with seines and traps with 10.88 and 0.14 kg per gear and day respectively. A total of 73 species belonging to 42 genera and 21 families were recorded in fishermen catches with the most diverse being the Mormyridae (16 species) and Mochokidae (14 species). The most abundant species are Schilbe intermedius (13.22 %), Lates niloticus (7.35 %), Bagrus bajad (5.11 %), Sarotherodon galilaeus (5.01 %), and Synodontis membranaceus (4.51 %). According to biomass, the most important were L. niloticus (15.03 %), B. bajad (13.02 %), Bagrus docmak (11.90 %), Hydrocynus brevis (8.67 %) and Heterotis niloticus (7.20 %).

Congress Topic Interventions

Topic No. ---
Notes ---

Ref. No. 667