Some preliminary studies on raciation in the long finned herring, Opisthopterus tardoore (Cuvier) along the Kanara coast

Abstract

All important fisheries of the world are based on one or more often, several stocks. In the Pacific pilchard the entire population constitutes only one stock. In the Pacific halibut and salmon, on the other hand, it is composed of more than one stock. The present investigations on the long finned herring, Opisthopterus tardoore, were primarily aimed to determine whether the population of this species along the Kanara coast is composed of one homogeneous stock or whether it constitutes more than one stock. The results of these studies are reported here.