A review of feeding indicators of Trichiurus lepturus in the Oman Sea

Document Type : Article

Authors

1 faculty member in fishery science research institute

2 Offshore Fisheries Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Chabahar, Iran.

3 Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Tehran, Iran.

Abstract

Examining the important relative index of IRI. Index of food preference Fp and gastric emptiness index of CV in this fish showed that this species is a gluttonous fish and the amount of gastric index of this species is calculated in spring and the lowest in summer.CV emptiness index increased from spring to summer, which reached its maximum in summer and decreased after summer, indicating that fish do not feed in summer and most feed in winter. Stomach index and liver index reached the highest in spring and the lowest in summer.In the stomach contents of this species, in order of priority, different groups of bony fish, then crustaceans such as crabs and shrimp were seen, but the largest volume of stomach contents was found in bony fish such as quince. بزماهی. Sardines and squid and pentagonal fish formed in this species. Of the total number of fish studied, three dietary groups of fish, crustaceans and cephalopods formed this species.Index of gastric emptiness (CV) showed that in large mane mane fish, the highest value of this index is in summer and showed that this species in this season, which is its breeding season, is very low in appetite and in spring and autumn It is relatively gluttonous and reaches its minimum in winter and shows a lot of nutrition and overeating of this species in this season.

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Ecology and Water Resources
Volume 5, Issue 2
July 2022
Pages 40-47

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