December 2015

Application of geographic information system for inland fisheries management: A case study of Stratum VII (Yeji Sector), Volta Lake, Ghana

A geographic information system (GIS)-modeling of fish production in the Stratum VII of the Volta Lake was undertaken with the objective of investigating temporal changes and modeling fish production into the future. Parameters used included number of canoes, number of fishers, and water level. Stratum VII of the Volta Lake is currently one of the areas with the highest fishing activities, the largest fish market at...

Author(s): Dogbeda Mawulolo Yao Azumah , George Wiafe and Patrick Kwabena Ofori-Danson

December 2015

Effect of dietary protein levels on ammonia concentration and growth of Tilapia rendalli (Boulenger, 1896), raised in concrete tanks

Tilapia rendalli juveniles (±9.5 g) were cultured in concrete tanks to determine the effect of four dietary protein levels (30, 35, 40 and 45% crude protein (CP) in feed on ammonia concentration and growth performance of the fish, stocked at 15 fish per tank. Fish were monitored for a period of 90 days. Fish that were fed on 40% CP diet had significantly (P<0.05) higher weight gain, growth, and feed conversion...

Author(s): Rodgers Makwinja, Fanuel Kapute, Wales Singini and Hastings Zidana