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2016•Egyptian Journal of Aquatic Biology and FisheriesOpen access

Food and feeding of the Indian Squid Loligo duvauceli in the Gulf of Suez, Egypt

Mohamed H. Yassien, Mohsen Hussein, Ahmed G. A. Gewida

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Abstract

Food and feeding of the Indian Squid Loligo duvauceli were studied through the analysis of 702 stomachs of Squid collected from commercial trawlers working in Attaka fishing harbour of the Gulf of Suez during September 2014 to April 2015. Food was presented only in about 36 of the total stomachs examined. The occurrence of 1/4-full, 1/2-full, 3/4-full and full were 33%, 39%, 17% and 11% respectively of the examined stomachs which contained food. The empty stomachs (0) were the majority of the examined stomachs during the whole fishing season (94.87%). The food mainly composed of fish, crustacean, cephalopods and unidentified remains, digested matters and sand grains. So this species may be described as carnivorous. For both sexes (male and female) of L. duvauceli the percentage of stomach fullness decreased with the increase in the maturity stages.

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What this paper is about

Food and feeding of the Indian Squid Loligo duvauceli were studied through the analysis of 702 stomachs of Squid collected from commercial trawlers working in Attaka fishing harbour of the Gulf of Suez during September 2014 to April 2015. Food was presented only in about 36 of the total stomachs examined. The occurrence of 1/4-full, 1/2-full, 3/4-full and full were 33%, 39%, 17% and 11% respectively of the examined stomachs which contained food. The empty stomachs (0) were the majority of the examined stomachs during the whole fishing season (94.87%). The food mainly composed of fish, crustacean, cephalopods and unidentified remains, digested matters and sand grains. So this species may be described as carnivorous. For both sexes (male and female) of L. duvauceli the percentage of stomach fullness decreased with the increase in the maturity stages.

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Available abstract

Food and feeding of the Indian Squid Loligo duvauceli were studied through the analysis of 702 stomachs of Squid collected from commercial trawlers working in Attaka fishing harbour of the Gulf of Suez during September 2014 to April 2015. Food was presented only in about 36 of the total stomachs examined. The occurrence of 1/4-full, 1/2-full, 3/4-full and full were 33%, 39%, 17% and 11% respectively of the examined stomachs which contained food. The empty stomachs (0) were the majority of the examined stomachs during the whole fishing season (94.87%). The food mainly composed of fish, crustacean, cephalopods and unidentified remains, digested matters and sand grains. So this species may be described as carnivorous. For both sexes (male and female) of L. duvauceli the percentage of stomach fullness decreased with the increase in the maturity stages.

Key concepts: Loligo, Fishery, Squid, Suez canal, Oceanography, Biology, Geography, Environmental science

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