Trophic interactions among three elasmobranch species coexisting in the Oman Sea: implications for resource partitioning

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RASTGOO ALI REZA; VALINASSAB TOORAJ

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Journal: Aquatic Ecology Year:2017 | Volume:7 | Issue:2 Page(s): 76-86

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Title

Trophic interactions among three elasmobranch species coexisting in the Oman Sea: implications for resource partitioning

Author(s)

RASTGOO ALI REZA | VALINASSAB TOORAJ | Issue Writer Certificate

Keywords

ElasmobranchQ1

SharksQ2

RaysQ1

Feeding ecologyQ2

Trophic interactionsQ1

Oman SeaQ1

Abstract

In this study, Trophic interactions were studied among three Elasmobranches including Iago omanensis, Rhinobatos punctifer and Torpedo sinuspersici coexisting in the depth ranging from 50 to 100 meters in the Oman Sea (Sistan and Balochistan waters). A total of 238 specimens were collected using industrial bottom trawlers of ‘ FERDOWS’ during spring and summer, 2014 and their stomach contents were analyzed based on VI, FO, %IRI indices and nMDS analysis. Results showed that I. omanensis fed mainly on teleosts, and crustacean and cephalopod were found in the several stomachs. Moreover, T. sinuspersici had specialized diets on teleosts. On the other hand, R. punctifer had a specialized diet on crustacean. An analysis of similarity showed significant differences among three studied species (R=0. 574; P=0. 001). Analysis of pair-wise tests detected the greatest dietary differences between R. punctifer and T. sinuspersici, while I. omanensis and T. sinuspersici showed the lowest differences. The results showed that there is resource partitioning, which can be related to morphology and feeding behavior of each species.

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APA: Copy

RASTGOO, ALI REZA, & VALINASSAB, TOORAJ. (2017). Trophic interactions among three elasmobranch species coexisting in the Oman Sea: implications for resource partitioning. JOURNAL OF AQUATIC ECOLOGY, 7(2 ), 76-86. SID. https://sid.ir/paper/242916/en

Vancouver: Copy

RASTGOO ALI REZA, VALINASSAB TOORAJ. Trophic interactions among three elasmobranch species coexisting in the Oman Sea: implications for resource partitioning. JOURNAL OF AQUATIC ECOLOGY[Internet]. 2017;7(2 ):76-86. Available from: https://sid.ir/paper/242916/en

IEEE: Copy

ALI REZA RASTGOO, and TOORAJ VALINASSAB, “Trophic interactions among three elasmobranch species coexisting in the Oman Sea: implications for resource partitioning,” JOURNAL OF AQUATIC ECOLOGY, vol. 7, no. 2 , pp. 76–86, 2017, [Online]. Available: https://sid.ir/paper/242916/en

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