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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Jul 2010, 31 (4)                                                                                                             Back

Abstract _8

Impact of fishing methods on conservation of ichthyofauna of

river Relli in Darjeeling Himalaya of West Bengal


Manik L. Acharjee1 and Sudip Barat*2

1Department of Zoology, Kalimpong College, Darjeeling - 734 301, India

2Aquaculture and Limnology Laboratory, Department of Zoology, University of North Bengal, Darjeeling, Siliguri - 734 013, India

(Received: October 30, 2008; Revised received: February 10, 2009; Accepted: March 02, 2009)


Abstract:  Impact of fishing methods and gears used on fish faunal diversity in spring–fed torrential river Relli in Darjeeling hill area of West Bengal was investigated in the present study. The fish species available in the river provide nutrition and recreation (rarely income generating) for a large number of people residing along the river bank and nearby villages and towns. The fishing methods observed therein have been categorized as, i) Scientific fishing methods, that is, collection of required number and size of fish so that sufficient population of fish remains balanced in the nature. ii) Unscientific fishing methods, that is, indiscriminate killing of large number of fish which adversely affect the water quality of rivers. Ten types of fishing methods are practiced in this area, for example, diversion of river channel, cast netting, scoop netting, angling, fish spearing, rock striking or hammering, dynamiting, electric fishing, river poisoning and traps utilized. Over the years uncontrolled and often indiscriminate fishing in the unmanaged hill-stream has resulted in a sharp decline in fish resources. The study gives a clear picture on the anthropogenic pressure on the river Relli and provides baseline data which may be helpful for conservation and management of the fish species and also formulating new fishery policy.

Key words: Fishing methods, Fish conservation, Hill- stream, Darjeeling Himalaya

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