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Abstract

FECUNDITY AND GONADOSOMATIC INDEX (GSI) OF Osteobrama vigoressi (sykes) FROM NIRA RIVER, BHOR DISTRICT PUNE, (MAHARASHTRA) INDIA.

*Nirbhay S. Pimple and Sanjay S. Kharat

ABSTRACT

The study about Fecundity and Gonadosomatic index (GSI) of Osteobrama vigoressi (skyes) was undertaken to investigate the reproductive potential of this fish. The fecundity was in range of 6241 to 25262 with a mean value of 14517.4 ±42.54. The mean Gonadosomatic index (%) was 211.81 ±9.134 with a range of 4.349- 10.051. The correlation coefficient for Fecundity (Y) and total body weight (X) was 0.9629. The correlation coefficient for Fecundity (Y) and total gonads weight (X) was 0.8937, the correlation coefficient for Fecundity (Y) and total body length(X) was 0.9629, and the correlation coefficient for Gonad weight (y) and total body weight (X) was 0.9202. The regression was linear when graph was plotted against the fecundity for TL, BW, GW, and GSI. The variable observed were significant at P<0.01.Knowledge about fecundity of a fish is essential for evaluating the commercial potentialities of its stock, life history, practical culture and actual management of fishery [10,12]. Thus the study would help in knowing the commercial potentialities of the stock and would benefit the fishery economics.

Keywords: stock, life history, practical culture.


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