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Book (series)Synopsis of biological data on the tor mahseer Tor tor (Hamilton, 1822). 2003
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No results found.Among Indian mahseers, Tor mahseer Tor tor (Hamilton, 1822) is the most important food and game fish of India after Tor putitora (Hamilton, 1822). It constitutes an outstanding fishery in the Narmada River in central India. It has also settled in some Indian reservoirs which have been stocked with this fish. However, the building of dams across certain rivers has created reservoirs that have destroyed the natural breeding grounds of the fish and caused mortality of brood and juvenile fish indisc riminately. The mahseer fishery of India is further declining as a result of low recruitment of the fish. Stocking rivers and reservoirs with mahseer is therefore essential to restore the fishery. This synopsis is the compilation of biological data for Tor tor – Tor mahseer collected from different sources. The detailed biological information on Tor tor, including the feeding habits, breeding and growth patterns contained in this synopsis, will be useful in planning the development of the mahsee r fishery in India. -
No Thumbnail AvailableBook (series)River Fisheries 1985
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Rivers drain all but the most arid areas of the earth through channels that are regu- lated by physical laws that impose on them certain forms. The ideal form is rarely encountered in practice and represents an end point to which geographic process tend. In general a river may be divided into two principal zones, the steep and fast flowing rhithron upstream and the sluggish and flat potamon downstream. While conditions in an individual system are highly variable along its length, similar reaches of different rivers differ much less even between continents and at different latitudes. All continents have a series of major river systems which consist not only of the river channels but also the swamps, lakes and seasonally flooded lands associated with them. Most rivers are highly conditioned by the patterns of precipitation in their basins. Differences in rainfall intensity throughout the year generate a flood wave that progresses downstream in the majority of rivers (flood rivers), al though singular geographic circumstances may distribute discharge more evenly throughout the year in some systems (reservoir rivers). The number of reservoir rivers is increasing through flow regulation and dam building. Although the basic nature of the river is determined by the rocks over which it flows, the flood regime seasonally modifies the physical and chemical conditions within the river particularly in the tropics. In higher latitudes other features of climate, such as insolation or air temperature exert an increasing influence. -
Book (stand-alone)Mountain fisheries in developing countries 2003
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No results found.Mountains of the world cover about one-fifth of the land surface, are home to one-tenth of the world's population, and provide livelihood to some of the poorest communities in the world. Mountain lakes and streams are a source of freshwater for countless riparian human communities, support industries, provide water for irrigation and hydropower electricity production and for fish. Some countries situated in mountain areas are landlocked, with no access to marine fishery resources, hence the fish of lakes, streams, rivers and reservoirs are an important source of animal protein, always in short supply in mountain countries. The Fifty-third General Assembly of the United Nations declared the year 2002 the “International Year of Mountains”. With the present document, that reviews the current status of capture fisheries and aquaculture in mountains of developing countries of Asia, Latin America, Africa and the Pacific, the FAI Fisheries Department contributes to the efforts of the United N ations to promote sustainable mountain development. As fisheries play an important role in providing food and income to people in mountain areas, they must be integrated into the rural development and water resource development initiatives. Several problem areas are common to neighbouring countries in mountain regions and fishery resources, such as migratory fish stocks, may have to be shared. Specific action programmes for mountain countries, with collaborative actions on a regional scale, may become the most cost-effective way to address those common problems and share experiences.
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