Some fishery options for food supply increase in the Caribbean Atlantic

Meeting: Interciencia Symposium on Marine Sciences in the Americas, 2-7 July 1977, San José, CRIDRC personnel. Paper on possibilities for increased food supply from fish production and aquaculture in the Caribbean Atlantic and Central America - discusses technologycal and economic aspects

Utilization of the by-catch of fish from shrimp trawling in tropical areas

Meeting: Conference on Handling, Processing and Marketing of Tropical Fish, 5-9 July 1976, London, GBPhotocopy of original.IDRC pers CRDI. Paper on the need to utilize fish by-catch from shrimps trawling in coastal waters of the tropical zones, with directives for fishery product processing - discusses limitations of shrimp trawlers in terms of fish preservation and food storage, role of fish by-catch in providing protein rich foods for the developing countrys

TAC meeting on aquaculture: comments on a programme for adoption as proposed by Spoleto Workshop, July, 1973

Meeting: TAC Meeting, 7th, 4-8 Feb. 1974, Roma, I

Making war on waste

French version available in IDRC Digital Library: Mettre terme au gaspillageSpanish version available in IDRC Digital Library: Pescado : una solución alimenticia para el mundo en desarroll

Ecological aspects of cage culture of fish

Meeting: SEAFDEC / IDRC Workshop on Floating Cages and Net Pen Enclosures, 12-21 Feb. 1979, Tigbauan, Iloilo, PHPhotocopyDiscusses the various biological aspects to be considered in selecting fish for cultivation in enclosures. Guiding principles to be observed and criteria for choosing fish and adapting enclosures for the type of fish to be grown are indicated. Includes bibliography

Analysis of Varroa destructor infestation of southern African honeybee populations

The discovery of the honeybee-specific ectoparasitic mite Varroa destructor in South Africa in October 1997 raised the spectre of massive honeybee colony losses as has occurred in most parts of the world where the varroa mite has been found. This was particularly concerning in Africa because of the importance of honeybees in the pollination of indigenous and commercial crops, and because of the numbers of small-scale beekeepers in Africa. The mite has now spread throughout South Africa and is found in almost all honeybee populations, both commercial and wild, and is also now present in most neighbouring countries. Varroa has not left a trail of destruction in South Africa as had been expected and no large scale collapse of the honeybee population occurred, despite the majority of beekeepers deciding not to protect their hives with chemical varroacides. Some colony losses did occur at the front of the varroa spread, and all colonies were found to be deleteriously affected by the mite which developed populations of 50 000 and more in some colonies. Infected colonies were also not as efficient as pollinators as uninfected colonies. Colonies exhibited all the same varroa effects witnessed in other parts of the world, with the exception that the majority of colonies did not die as a result of the infestation. The relative tolerance of African bees to the varroa mite has been confirmed by the long-term monitoring of both wild honeybee populations and commercial stock, and by population dynamic studies of the mites. In both wild and managed honeybee populations varroa appears to have been reduced to the status of an incidental pest. The development of mite tolerance took 3-5 years in the Cape honeybee (Apis mellifera capensis) and 6-7 years in the Savanna honeybee (Apis mellifera scutellata). The rapid development of mite tolerance in the Cape bee is thought to be due to the well developed removal of varroa-infested brood and the short post-capping period of worker brood. Together these resulted in a very rapid increase in infertile mites in the colony, the collapse of the mite population, and varroa tolerance. Tolerance does not develop as rapidly in Savanna honeybees as the post-capping period in these bees is similar to that of European bees and does not result in as many infertile mites. Nonetheless, varroa tolerance in Savanna bees develops more rapidly than would be the case in European bees because of more effective hygienic removal of varroa-infested brood. In both Cape and Savanna bees, the absence of varroacide applications and a “live-and-let-die” approach to the wild and commercial honeybee populations was crucial to the developed of population-wide varroa tolerance, in contrast to the selective breeding and pesticide treadmill practised in most parts of the world in an effort to get rid of the varroa mite. Varroa destructor is concluded not to be a serious threat to honeybees and beekeeping in Africa, and efforts should be made to prevent the use of pesticides and techniques that could hinder the development of natural mite tolerance in Africa.Dissertation (MSc (Entomology))--University of Pretoria, 2007.Zoology and Entomologyunrestricte

Fermes de la mer : description du programme de recherches agricoles subventionné par le Centre de recherche pour le développement international

Version anglaise disponible dans la Bibliothèque numérique du CRDI : Fish farming : an account of the aquaculture research program supported by the International Development Research CentreDécrit l'historique et les objectifs des projets concernant l'amélioration génétique des poissons et l'utilisation d'hormones, les méthodes de pisciculture, la nutrition animale, les parasites et les maladies animales, la conchyliculture, et la dulcaquiculture

Fish farming : an account of the aquaculture research program supported by the International Development Research Centre

French version available in IDRC Digital Library: Fermes de la mer : description du programme de recherches agricoles subventionné par le Centre de recherche pour le développement internationalMonograph outlining the aquaculture research projects supported by IDRC. Describes the background and objectives of the projects involving shellfish and freshwater fish breeding and the use of hormones; fish culture methods; animal nutrition; animal diseases and parasites

Potage de carpe au menu

Version anglaise disponible dans la Bibliothèque numérique du CRDI: Bighead soup for lunchVersion espagnole disponible dans la Bibliothèque numérique du CRDI: Carpas para Malasia y el Sudeste Asiátic

Bighead soup for lunch

French version available in IDRC Digital Library: Potage de carpe au menuSpanish version available in IDRC Digital Library: Carpas para Malasia y el Sudeste Asiátic