WorldFish is an international, nonprofit research organization that harnesses the potential of fisheries and aquaculture to reduce hunger and poverty. Our publications database contains WorldFish publications and references to WorldFish research published in refereed journals and periodicals.

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An examination is made of the possibilities of the development of mollusc and crustacean culture, especially intraditional harvesting areas of the Niger Delta, as a means of accelerating protein self-sufficiency. Scope for growth of coastal aquaculture of these organisms does exist, but applied research in biology, culture technology, processing, marketing and economics is required.

There is great impetus among phytochemists to develop molluscicides which are lethal to the snail intermediate hosts of bilharzia. They search for plant-derived, water-soluble compounds that are cheap to isolate, specific to target animals, easily biodegradable, non-toxic to other biota and to which snails are unlikely to become resistant. This paper reports on some medicinal plants from Malawi that have been studied in the hope of isolating compounds for the control of bilharzia.

A time series of catch and effort data (1970-78) of the Ivorian purse seine fishery in Sierra Leone waters was analyzed using the Schaefer production model. The regression of C/f on effort was significant and the resulting estimates of MSY was 14640 tonnes with F msy=1734 boat days.

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