FEEDING BIOLOGY AND LENGTH-WEIGHT RELATIONSHIP OF INDIAN SQUID (UROTEUTHIS DUVAUCELI) IN COASTAL WATERS OF GUJARAT.

Autor: Tehseen, Panja, Desai, A. Y., Saroj, Jyoti, Arti, Joshi
Předmět:
Zdroj: Journal of Experimental Zoology India; Jan2019, Vol. 22 Issue 1, p609-613, 5p
Abstrakt: Cephalopods are exclusively marine molluscs and there are about 600 species in the world oceans and of these less than a hundred species are of commercial importance. Indian squid (Uroteuthis duvauceli) is the commercially important species of Veraval. The marine fish landing during the year 2013 of the country has been estimated as 3.78 million tonnes. Marine squid landings in India during the year 2013 was 100014 tonnes (CMFRI, 2013). The present study gives a brief information about the feeding biology of squids. Gujarat is one of the most important maritime state of the nation contributing to the nation's economy. Cephalopods including squids are one of the most important export commodity from the state. The length-weight relationship study would help to analyse the status of squid fishery off Gujarat mainland and the study about the feeding biology using monthly stomach content data of squid will help to know about the feeding intensity in different seasons and their diet composition. The maximum Dorso--Mantle length encountered during the study was 205 mm, where as the minimum was 56 mm. The food of U. duvaucelli appears to consist of fish, crustaceans and cephalopods. The detailed results of studies on feeding biological aspects such as length composition, length-weight relationship, feeding intensity are presented here in this paper. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index