Current status of rainbow trout Oncorhynchus mykiss (Walbaum 1792) fisheries in Munnar Hills of South India

Sharma Aishwarya, . and Walter Devaa J. C., . and Uthandakalaipandian Ramesh, . Current status of rainbow trout Oncorhynchus mykiss (Walbaum 1792) fisheries in Munnar Hills of South India. pp. 344-354. ISSN 2073-3720

Rainbow trout Oncorhynchus mykiss (Walbaum 1792) is a popular cold-water fish species widely distributed and farmed across the globe. In India rainbow trout fisheries are common in the Himalayan states and the Western Ghats of South India. The introduction of brown trout Salmo trutta fario (Linnaeus 1758) in Munnar Kerala India dates back to 1909. As the farming of brown trout was not successful rainbow trout were introduced in 1932. However no data regarding trout fisheries post-1970 are available. Hence this study aimed to assess the current scenario of O. mykiss fisheries by analysing the existing angling and production records and interviewing the officials in charge. The results showed that O. mykiss fisheries in Munnar are currently endangered and only a few numbers of O. mykiss stock are found in Rajamallay Stream which is the present stocking site. Studies have shown that destructive fishing pollution siltation and animal intrusion contributed to the decline of trout stocks in this region. Proper conservative measures good hatchery conditions adequate broodstock management feed improvement and regular seed stocking can improve the production of O. mykiss in Munnar.

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Abstract

Rainbow trout Oncorhynchus mykiss (Walbaum 1792) is a popular cold-water fish species widely distributed and farmed across the globe. In India rainbow trout fisheries are common in the Himalayan states and the Western Ghats of South India. The introduction of brown trout Salmo trutta fario (Linnaeus 1758) in Munnar Kerala India dates back to 1909. As the farming of brown trout was not successful rainbow trout were introduced in 1932. However no data regarding trout fisheries post-1970 are available. Hence this study aimed to assess the current scenario of O. mykiss fisheries by analysing the existing angling and production records and interviewing the officials in charge. The results showed that O. mykiss fisheries in Munnar are currently endangered and only a few numbers of O. mykiss stock are found in Rajamallay Stream which is the present stocking site. Studies have shown that destructive fishing pollution siltation and animal intrusion contributed to the decline of trout stocks in this region. Proper conservative measures good hatchery conditions adequate broodstock management feed improvement and regular seed stocking can improve the production of O. mykiss in Munnar.

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Item Type:	Article
AGROVOC Term:	Trout
AGROVOC Term:	Oncorhynchus mykiss
AGROVOC Term:	Freshwater fishes
AGROVOC Term:	Aquaculture
AGROVOC Term:	Biodiversity
AGROVOC Term:	Ecosystems
AGROVOC Term:	Stock assessment
AGROVOC Term:	Statistical analysis
AGROVOC Term:	Surveys
AGROVOC Term:	Data collection
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/10295

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