Integrated analysis of trophic structure and feeding dynamics of invasive Callinectes sapidus Rathbun, 1896 in a Mediterranean coastal lagoon using stable isotopes and digestive enzyme activity

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dc.authorid0000-0002-6426-8095
dc.authorid0000-0001-8264-7606
dc.authorid0000-0003-3319-0616
dc.contributor.authorAcar, SeCil
dc.contributor.authorGurkan, Selin ErtUrk
dc.contributor.authorAtes, A. Suat
dc.contributor.authorOzdilek, Sukran Yalcin
dc.date.accessioned2026-02-03T12:02:45Z
dc.date.available2026-02-03T12:02:45Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe objective of this study is to examine the invasive characteristics of the blue crab (Callinectes sapidus Rathbun, 1896) and its potential impact on lagoon ecosystems. A total of 90 individuals were collected from the & Ccedil;anakkale Strait. A comprehensive suite of analytical techniques was employed, encompassing stomach content analysis, stable isotope analysis, and digestive enzyme profiling. The resulting data set was then subjected to rigorous statistical and bioinformatic analysis, with a particular focus on elucidating its correlation with morphometric characteristics. Stomach content analysis revealed that algae (47.19 %) and fish (25.37 %) constituted the primary dietary components. Isotope data further confirmed the species' omnivorous feeding strategy, with Ruditapes decussatus emerging as a dominant dietary component in isotopic signatures, although it was not directly observed in stomach contents. Adult male specimens exhibited a propensity for carnivorous feeding behaviour, as evidenced by isotopic patterns, which may be indicative of vestiges of their pelagic larval phase. A dietary niche overlap was identified between C. sapidus and the native green crab (Carcinus aestuarii) in the lagoon, with the former exhibiting a broader niche width. Despite the limited sample size, these findings contribute valuable preliminary insights into the feeding ecology and ecological interactions of C. sapidus in Mediterranean transitional waters, highlighting its potential invasive impact.
dc.description.sponsorshipCanakkale Onsekiz Mart University The Scientific Research Coordination Unit [FBA-2020-3370]
dc.description.sponsorshipThis work was supported by Canakkale Onsekiz Mart University The Scientific Research Coordination Unit, Project number FBA-2020-3370.
dc.identifier.doi10.1016/j.ecss.2025.109439
dc.identifier.issn0272-7714
dc.identifier.issn1096-0015
dc.identifier.scopus2-s2.0-105010866805
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.ecss.2025.109439
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34859
dc.identifier.volume324
dc.identifier.wosWOS:001554610300001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAcademic Press Ltd- Elsevier Science Ltd
dc.relation.ispartofEstuarine Coastal and Shelf Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260130
dc.subjectCallinectes sapidus
dc.subjectInvasive species
dc.subjectTrophic position
dc.subjectDigestive enzyme
dc.subjectStomach content analysis
dc.subjectMediterranean coastal lagoon
dc.titleIntegrated analysis of trophic structure and feeding dynamics of invasive Callinectes sapidus Rathbun, 1896 in a Mediterranean coastal lagoon using stable isotopes and digestive enzyme activity
dc.typeArticle

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