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Journal of the Marine Biological Association of India
Population dynamics of Tachysurus dussumieri in north Kerala.
The paper presents the results of the study on age and growth of Tachysurus dussumieri from North Kerala Coast with particular emphasis on population dynamics. The recruitment pattern, stock position, mortality and yield per recruit studies indicated that the resource is at present under heavy fishing pressure. The influence of climatological, hydrological and water movements were understood and their effect was found from the fact that the fishery was mainly concentrated along the shallow coastal waters upto a depth of 70 m. The impact of mechanisation on the fishery causing heavy damage to the brooders with eggs/embryo, was critically analysed and suggestions and measures enumerated. It is suggested that the situation can be overcome by reducing fishing pressure or by extending the area of operation to midshelf as well as intensifying the hooks and line efforts along the existing fishing limits.
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