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Title: A report on fish production in the National Rivers Authority
Author: Richard Parker
Document Type: Monograph
The tradditional method of increasing fish stocks is to boost biomass levels by restocking from high to low stock areas. This method has however proved largely unsuccessful (demonstrated by stock surveys). It is thought this is due to the stress of capture and transport in addition to the change in water chemisty, flow and habitat structure of the new water. A more favorable method is that of stock supplementation. This involves the creation of new water bodies, or the use of existing bodies adjacent to rivers. These bodies are then managed as rearing ponds and stocked with larvae. A direct connection with the river allows the release of the larvae after one or two growing seasons. Thus many of the problems of traditional restocking are overcome. This is now increasingly practised within the Anglian region. The fist stage of this process is to produce the fry.
Publisher: National Rivers Authority
Publication Date: 1990
Publication Place: Peterborough
Subject Keywords: Fishery managementRestockingTechniquesImprovement
Extent: 24
Total file downloads: 324

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