Biodiversity and sustainable use of fish in the coastal zone: proceedings of an international workshop

A compilation of paper presented in the workshop entitled Biodiversity and Sustainable Use of Fish in the Coastal Zone. The workshop was convened in May 1999 at WRI, to give the project team, invited expert and participants from Ghana and other sub-Saharan Africa countries an opportunity to discuss common interest in tilapia biodiversity and genetic resources conservation and sustainable use, and to consider further research and training needs.

Selecting Nile tilapia (Oreochromis niloticus) for growth in low-input environments

This chapter presents the results from a selective breeding experiment with Nile tilapia in a low input pond environment. The environment was defined as low input as the pond only received chicken manure for fertilisation. No pellets were given to the fish during larval rearing or grow out. The results show that good growth can be obtained under these conditions. Heritability for growth was high (0.6) and harvest body weight almost doubled over two generations of selection.

Biodiversity conservation in Sub-Saharan Africa: policies, laws and institutions to control/prevent the introduction of alien invasive species

The policy and legal instruments as well as institutional arrangements for the regulation and/or control of the introduction of alien species in Sub-Saharan Africa are reviewed. Many countries in Sub-Saharan Africa have integrated measures to regulate the introduction of alien species into their environmental policies and laws as well as in sectoral instruments (for example, fi sheries laws, forest laws) and national biodiversity strategies and action plans.

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