RESUMO
During present study total 58 specimens of Mahseer (Tor tor) from River Narmada were studied for morphometric and meristic characteristics. Interrelationship among the morphometric and meristic characteristics were observed. The morphometric characters showed a proportional positive growth with the increasing length of the fish. The regression coefficient (b) of variable parameters (Y) on total length (X) showed that growth rate with respect to total length was maximum in case of weight (b = 3.113) and lowest in mouth tip to operculum top (b = 0.957).The correlation coefficient (r) was found positive for different morphometric parameters with respect of total length. In case of morphometric parameters proportional positive growth with increasing length of the fish was recorded during the present study.
RESUMO
RAPD was used to delineate the hilsa populations sampled from the Ganga, Yamuna, Hooghly, and Narmada Rivers at six different locations. Six degenerate primers were used to generate the fragment patterns from the samples collected. All primers were highly polymorphic and generated high numbers of amplification products. Nei's genetic distances were calculated between locations. The overall average genetic distance among all the six locations was 0.295. The Fst value within the Ganga was 0.469 and within the Hooghly it was 0.546. The overall Fst value for the six populations analyzed was 0.590. The UPGMA dendrogram clustered the hilsa into two distinct clusters: Ganga and Yamuna populations and the Hooghly and Narmada populations.