NEW FAO PUBLICATIONS
Tave, D. 1999. Inbreeding and brood stock management. FAO Fisheries
Technical Paper. No. 392. Rome, FAO. 122 pp.
The manual also describes how inbreeding can be used to improve
captive populations of fish. The manual contains chapters on: basic genetics and the
genetics of inbreeding; how to determine individual inbreeding values when pedigrees are
known; how to determine the average inbreeding value in a population when pedigrees are
not known; genetic drift, which is random changes in gene frequency; how inbreeding
programmes can be used to improve cultured populations of food fish; how to prevent
inbreeding depression and loss of genetic variance in farmed populations; and
recommendations on how to manage cultured populations of fish to prevent unwanted
inbreeding and genetic drift from depressing productivity, profits, and survival.
Pullin, R.S.V., D.M. Bartley and J.Kooiman, Editors. 1999. Towards policies for conservation and sustainable use of aquatic genetic resources. ICLARM Conf. Proc. 59, 277pp.
NEW FAO PUBLICATIONS
Fernando, C.H. and M. Halwart. 2000. Possibilities for
the integration of fish farming into irrigation systems. Fisheries Management and Ecology,
Abstract: Harvesting fish in irrigation systems, sometimes involving some form of
husbandry or even culture, is a practice which dates back at least two millennia. Although
seldom recorded, it seems to have been widespread in the tropics and subtropics,
especially in rice fields. In the present century, improved management for land-based
crops and the demands for the successful raising of aquatic organisms were not generally
compatible, but with the advent of integrated crop protection, this situation has changed
drastically. Moreover, irrigation systems using stored or diverted water have increased
exponentially during the past 50 years, but fish farming within these irrigated systems
has not expanded equally, and therefore, there is now a huge potential for this integrated
enterprise. A systematic approach to fish farming development at irrigation system level
which will make this integration a viable enterprise is proposed.
desirable species already exists, these indigenous fish can be harvested, but
their yields may only be adequate for low-income rural areas. Common carp, Cyprinus carpio
L., has traditionally been a preferred cultured species. Tilapia are proposed as an
alternative because these fish are cheap to raise, give high yields and are also quite
M. Halwart, Fishery Resources Division, Food and Agriculture Organization of the
United Nations, Rome, Italy. e-mail:email@example.com