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Details are given of the various new technologies demonstrated by ICLARM and the Fisheries Department in Malawito smallholder farmers, which include the following: 1) Use of Pennisetum purpureum as an alternative/supplement to maize bran as fish feed; (2) Creation of high quality compost from poor quality plant wastes as fish food or fertilizer; 3) Vegetable-pond integration using pond sediments and water for adjacent vegetable beds; 4) Integration of chicken and fish enterprises; 5) Pond sti
Catch assessment estimates for the motorized and non-motorized canoes at Boa-Manga (Cameroon) were found to be 5.13 and 2.70 t/year, respectively, leading to an estimated lower limit for the production of the Ocean division (100 km coastline) of 1190 t/year. The net economic benefit for the motorized canoes is higher than that of non-motorized canoes. It appears better to modernize only the existing non-motorized craft.
Based on length-frequency distributions and mean annual water temperature, growth and mortality parameter estimates, as well as spawning pattern of Pellonula leonensis (Clupeidae) occurring in the Cross River (Nigeria) have been obtained. The estimated von Bertalanffy growth parameters are TL8 = 156 mm, and K = 0.81 - 0.96 year -1. Natural mortality ranges from M = 0.8 to 0.9 year-1.