We'd like to understand how you use our websites in order to improve them. Register your interest. The composition of the diet of Citharus linguatula L. The percentage of empty stomachs remained constant throughout the year, except for the period August to September, when a maximum was recorded coinciding with the reproductive period. Crustaceans Mysidacea and Decapoda and teleosts constituted the main prey. The composition of the prey ingested varied with predator size; small specimens contained a greater number of mysids in their stomachs, while decapods and fishes were more abundant in the stomachs of larger specimens.
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Received: 10 April Accepted: 8 August Obtaining data to study fish biology can be a challenge if a stock is fished by a variety of gears with different effort units and different selectivity, particularly if these gears only partially overlap in space and time. In this work, we attempted to study the biology of the spotted flounder Citharus linguatula in the Patraikos Gulf and the adjacent central Ionian Sea eastern Mediterranean and to evaluate the current fisheries management.
We characterized age composition and growth, length-at-maturity, and catch-per-unit-effort CPUE of spotted flounder from the catches of bottom trawls, gillnets and trammel nets for the period autumn — Variation of fish total length, gonadosomatic index, hepatosomatic index and condition factor was analyzed using generalized additive models GAMs with regard to sex, date, fishing gear and depth. Fish age ranged from 1 to 5 years.
A slightly allometric growth was documented with females attaining larger sizes than males. The seasonal change of gonad maturity stages and the gonadosomatic index indicated spawning in late summer-autumn. The catch composition of trawls and the CPUE model results suggested that the selectivity of this gear should be regulated to reduce catching immature individuals of spotted flounder.
The results further indicated that the seasonal trawl closure of the Patraikos Gulf contributes to reduce catching juveniles. Data correspond to usage on the plateform after The current usage metrics is available hours after online publication and is updated daily on week days. All issues Volume 30 Aquat. Living Resour. Free Access. Issue Aquat. Current usage metrics About article metrics Return to article. Initial download of the metrics may take a while. Table of Contents.
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Number: MANU The study of sex ratio, showed that the females The total vertebral number of is ranged from 31 to The length-weight relationship of C. Keywords: Citharus linguatula, Mostaganem bay, sex ratio, relationships length-length and length- weight.
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