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Title

Comparative diets of sympatric batoid elasmobranchs in the Gulf of Oman

AuthorsRastgoo, Ali Reza; Navarro, Joan ; Valinassab, Tooraj
KeywordsForaging ecology
Gulf of Oman
Diet
Elasmobranch
Issue DateMay-2018
PublisherInter Research
CitationAquatic Biology 27: 35-41 (2018)
AbstractDocumenting the interactions and mechanisms of coexistence among predators is important for understanding their ecological roles in food webs. Here, we examined the diet and trophic relationships of 6 demersal batoids coexisting in the Gulf of Oman by analyzing stomach contents. There were significant differences in diets among the batoid species, suggesting differential preferences. Diets of Gymnura poecilura and Torpedo sinuspersici were similar and consisted mostly of teleost fishes. In contrast, Brevitrygon walga and Rhinobatos punctifer mostly ate crustaceans. The diets of Maculabatis randalli and Pastinachus sephen were diverse and included crustaceans, teleosts, polychaetes, bivalves and echinoderms. The differences in diet among these batoids may be related to morphological differences in feeding structures and to differences in behavior, which could explain their diversity and coexistence in the Gulf of Oman
Description7 pages, 4 figures, 2 tables, supplementary material https://doi.org/10.3354/ab00694
Publisher version (URL)https://doi.org/10.3354/ab00694
URIhttp://hdl.handle.net/10261/165182
Identifiersdoi: 10.3354/ab00694
issn: 1864-7782
e-issn: 1864-7790
Appears in Collections:(ICM) Artículos
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