Insight into cumulative intra-guild and intra-specific depredation among sharks

Clua E., Galves J.B., Werry J.M.

Date de parution: décembre 2014
Volume: 38
Number: 4
Pagination: 311-313
doi: https://doi.org/10.26028/cybium/2014-384-011
Notes:

How to cite: Clua, E., Galves, J.-B., & Werry, J. M. (2014). Insight into cumulative intra-guild and intra-specific depredation among sharks. Cybium, 38(4): 311-313. https://doi.org/10.26028/CYBIUM/2014-384-011

Résumé

Intra-guild predation (IGP), depredation of hooked sharks and cannibalism by large individuals on smaller conspecifics have been documented for both tiger shark Galeocerdo cuvier and bull shark Carcharhinus leucas. In this paper we report a case study of cumulative inter and intra-depredation from the Indian and the Pacific Ocean involving large G. cuvier and C. leucas adults at the final stage. These findings further the hypothesis that IGP and cannibalism among adult sharks occurs in the wild and potentially influences predator-prey relationships in tropical marine ecosystems.

Mots-clés: Carcharhinidae - Carcharhinus leucas - Galeocerdo cuvier - Indian Ocean - Inter-specific depredation - Pacific Ocean - Trophic interaction
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