Journal of Environmental Biology

Study of the length-weight relationship and condition factor

for the Golden Mahseer, Tor putitora from Himalayan rivers of India

H?seyinOğuz ?OBAN^1* and Seher ?ZDAMAR²

¹S?leyman Demirel University, Faculty of Forestry, 32260, Isparta, Turkey

²S?leyman Demirel University, Institute of Natural and Applied Sciences, 32260, Isparta, Turkey

*Corresponding Author E-mail: oguzcoban@sdu.edu.tr

Publication Data

Paper received:

01 August 2012

Revised received:

01 March 2013

Accepted:

03 June 2013

Abstract

The Golden mahseer Tor putitora (Hamilton, 1822) is one of the most important sport fish even its endangered status is due to its declining population. The length-weight relationship and the condition factor for T. putitora (N=150) from four different geographical regions in eastern and western Himalayas were studied. Fish sampling took place from December 2009 to March 2011. The b (slope) values obtained ranged from 2.69-3.10. However, no significant deviation was observed from the isometric value (b=3) therefore population from all four locations followed isometric growth pattern. The length-weight regression equation obtained for Bhalokpong, Arunachal Pradesh was Log W = -5.276+3.108Log L; for Anji, J&K was Log W = -4.633+2.811Log L; for Basoli, J&K was Log W = -4.315+2.690Log L and for Jogindernagar, Himachal Pradesh was LogW= -5.260+3.082LogL. The condition factor revealed that the population of eastern Himalayas in Jia bhoreli river was in better condition (K=0.98?0.12) in comparison to western Himalayas. Among the western Himalayan region the population of Ravi river was in poor condition (K=0.78?0.11).

 Key words

Condition factor, Golden mahseer, Length-weight relationship 

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