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Diet composition and feeding dynamics of Trichiurus lepturus Linnaeus, 1758 off Gujarat, north-west coast of India

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Relation http://eprints.cmfri.org.in/12926/
http://epubs.icar.org.in/ejournal/index.php/IJF/article/view/69184
DOI: 10.21077/ijf.2018.65.2.69184-06
 
Title Diet composition and feeding dynamics of Trichiurus lepturus
Linnaeus, 1758 off Gujarat, north-west coast of India
 
Creator Mohammed Koya, K
Vase, Vinay Kumar
Abdul Azeez, P
Sreenath, K R
Dash, Gyanaranjan
Bharadiya Sangita, A
Ganesh, T
Rohit, Prathibha
 
Subject Food and Feeding
Ribbon fishes
 
Description The largehead ribbonfish, Trichiurus lepturus Linnaeus, 1758 forms a major fishery along north-west coast of India comprising the two coastal states of Gujarat and Maharashtra. Diet composition was analysed for five years (2010-2014) to understand shifts if any in the prey items. Seasonal changes in the prey items were studied for three years (2012-2014) to explore the temporal dynamics of prey availability in the ecosystem and in largehead ribbonfish guts. Feeding indices viz., Stomach fullness index (SFI), empty stomach ratio (ESR), gastrosomatic index (GaSI) and relative gut length (RLG) explained the feeding behaviour, seasonal dynamics and ontogenetic shifts in prey items. The Vacuity Index (VI) was estimated as 37.56%, indicating that T. lepturus is a carnivore and relatively edacious. Diet of T. lepturus comprised of fishes (47.16%), crustaceans (45.22%), molluscs (4.33%) and miscellaneous items (3.28%). Acetes sp. was the most dominant prey item during the study period. Feeding intensity was found to be high during the post-monsoon months which coincided with the period of gonadal maturation of the fish. Significant variations (p
 
Date 2018
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/12926/1/IJF_65_2_Mohamed%20Koya_Trichiurus%20lepturus.pdf
Mohammed Koya, K and Vase, Vinay Kumar and Abdul Azeez, P and Sreenath, K R and Dash, Gyanaranjan and Bharadiya Sangita, A and Ganesh, T and Rohit, Prathibha (2018) Diet composition and feeding dynamics of Trichiurus lepturus Linnaeus, 1758 off Gujarat, north-west coast of India. Indian Journal of Fisheries, 65 (2). pp. 50-57.