Consequences of Exotic Species Invasion and Mitigation Measures in Fisheries
V.L. Ramya
Regional Centre, ICAR-Central Inland Fisheries Research Institute, Bangalore, Karnataka (560 089), India
Jesna, P.K.*
Regional Centre, ICAR-Central Inland Fisheries Research Institute, Bangalore, Karnataka (560 089), India
Sibina Mol, S.
Regional Centre, ICAR-Central Inland Fisheries Research Institute, Bangalore, Karnataka (560 089), India
B.K. Das
ICAR-Central Inland Fisheries Research Institute, Barrackpore, West Bengal (700 120), India
DOI: NIL
Keywords: Exotic, Impact, Invasive, Open water
Abstract
Exotic species invasions have been well-documented throughout the world, and the reasons for introduction vary according to the requirements of each nation. The secondary threat to biodiversity, after the primary threat of habitat alteration, is the impact of alien species in natural water bodies. The impacts are divided into ecological, genetic, and socio-economic effects. Competition for shelter, food, predation, hybridization with native species, tainting of the gene pool, and introduction of diseases are the main problems of invasiveness. The introduction of invasive species often results in their dominance over native species due to their wide range of physiological and environmental tolerance. Before introducing any biological species, a thorough analysis of the ecosystem and its effects should be assessed. The most difficult task in open water bodies is the eradication of introduced species. Early detection and prevention could lead to the investigation of conservation strategies for biodiversity.
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Reference
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