Effect of Salinity on Growth and Survival of Rohu, Labeo rohita (Ham.) under Laboratory and Field Conditions
Effect of Salinity on Growth and Survival of Rohu, Labeo rohita (Ham.) under Laboratory and Field Conditions
Date
2003
Authors
Pillai, Devika
Jose, Susheela
Mohan, M.V.
Joseph, Aneykutty
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
The limits of salinity affecting survival and growth performance of the Indian Major
Carp, Labeo rohita was studied in laboratory and field conditions. A salinity range of 0 tol4
ppt was used at 2 ppt interval in the present study. Rohu could survive in waters upto 8
ppt salinity. Beyond 8 ppt, the fish showed signs of stress and mortality occurred. There was
100% mortality in 14 ppt salinity within 7-8 days. Although maximum growth was obtained
at 0 and 2 ppt, growth was not markedly affected upto 6 ppt salinity. Rohu was cultured
along with milkfish in brackish water pond, where salinity ranged from 1.9-8.9 ppt during
the culture period of 120 days. As salinity increased above 8 ppt, Rohu showed stress signs
and therefore, the culture was discontinued. The present study indicates that there is good
potential for culturing these species in low saline areas, that otherwise remain unutilized
Description
Keywords
Salinity tolerance, growth, survival, rohu, Labeo rohita
Citation
Fishery Techn 40(2):91-94