STUDY ON SOME BIOLOGICAL ASPECTS OF CRAB, Portunus sanguinolentus (Herbst, 1783) LANDED AT VERAVAL COAST, GUJARAT 3010
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Date
2019-08
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JAU, JUNAGADH
Abstract
The biological study on Portunus sanguinolentus was conducted at Veraval
coast of Gujarat. It is exploited by the use of trawler throughout the year during
August to March month at Veraval coast of Gujarat. The biological information of
crab such as length - weight relationship, food and feeding habits, sex ratio and
fecundity were collected from the multiday trawler operated along Veraval coast of
Gujarat. The highest observed length of the crab was 270.2 mm with a mean length of
109 ± 26 mm. The overall sex ratio was 1:1.14. They spawned round the year with its
peak during August and September. Absolute fecundity of the species was
7,44,900 - 6,02,910. Gonadosomatic index was the highest during March.
Gastrosometic index was highest during November. Fish and Crustacean were the
most preferred food item than other food items. The present investigations will
helpful to people by providing the baseline data for the conservation and management
aspects of the fishery resource for future purpose.