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标题：Trophic relationships among scorpaeniform fishes associated with gas platforms
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作者：Luca Castriota ; Manuela Falautano ; Maria Grazia Finoia 等
期刊名称：Helgoland Marine Research
印刷版ISSN：1438-3888
出版年度：2012
卷号：66
期号：3
页码：401-411
DOI：10.1007/s10152-011-0281-0
出版社：BioMed Central
摘要：Trophic relationships between Scorpaena porcus, S. notata and Chelidonichthys lucerna collected near natural gas platforms were investigated for the first time in central Adriatic Sea from July 2005 to May 2006. Sampling was repeated at control sites on soft bottom where, however, only C. lucerna occurred. All of the three predators showed diet specialization for crustaceans, with high overlap for angular crab Goneplax rhomboides. The widest prey variety, consisting mainly of epibenthic and infaunal organisms, was detected in C. lucerna, whose feeding behaviour resulted not to be affected by the presence of platforms. Burrowing shrimp Alpheus glaber, hairy crab Pilumnus hirtellus, bivalve Corbula gibba, and European anchovy Engraulis encrasicolus discriminated S. porcus diet, while thalassinid Jaxea nocturna discriminated S. notata diet. The occurrence of E. encrasicolus as natural prey of S. porcus is discussed. Overall, predators like scorpaenids, which live in strict association with platforms in the study area, seem to rely on soft bottom prey items rather than exploiting resources from the platforms, thus competing with soft-bottom predators (i.e. triglids) for the same resources.
关键词：Diet overlap;Feeding habits;Scorpaeniforms;Gas platforms;Adriatic Sea