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The feeding habits of the Lessepsian fish Stephanolepis diaspros (Fraser-Brunner, 1940) in the Gulf of Gabes(eastern Mediterranean Sea)
Zouari-Ktari, R.; Bradai, M.N.; Bouaïn, A. (2008). The feeding habits of the Lessepsian fish Stephanolepis diaspros (Fraser-Brunner, 1940) in the Gulf of Gabes(eastern Mediterranean Sea). Cah. Biol. Mar. 49(4): 329-335
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723; e-ISSN 2262-3094
Peer reviewed article  

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Trefwoorden
    Feeding
    Mediterranean Sea
    Stephanolepis diaspros Fraser-Brunner, 1940 [WoRMS]
    Marien
Author keywords
    Gulf of Gabes

Auteurs  Top 
  • Zouari-Ktari, R.
  • Bradai, M.N.
  • Bouaïn, A.

Abstract
    The feecling habits of a Mediterranean population of the Lessepsian fish Stephanolepis diaspros were investigatecl with respect to fish size and seasons. Stomach contents of 1124 specimens, collectee! at monthly intervals, were analysed. 40.8% of the stomachs examinee! were empty, with a maximum recordee! in winter and a minimum in summer and their proportion variee! also among size classes. Maximum feeding intensity occurrecl for males of totallength > 186 mm. The cliet was composee! of benthic organisms, mainly crustaceans, foraminifers, gastropocls, ostracocls, sea urchins and phytobenthos, while other animal groups were consumee! occasionally. The frequencies of primary preys increased with size whi le those of seconclary preys were reclucecl and even absent in the largest size classes. The varied food spectrum inclicates that S. diaspros is an omnivorous species and coule! be consideree! an opportunistic preclator.

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