Comparative feeding ecology of the yellow ray urobatis jamaicensis (Urotrygonidae) from the bahamas

O’Shea, O.R., Wueringer, B.E., Winchester, M. M., and Brooks, E. J. (2018) Comparative feeding ecology of the yellow ray urobatis jamaicensis (Urotrygonidae) from the bahamas. Journal of Fish Biology, 92 (1). pp. 73-84.

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Stomach contents were collected from 117 yellow rays Urobatis jamaicensis from three locations in south Eleuthera, The Bahamas and compared with ambient infauna via sediment surveys. Diets were relatively limited with a total of 535 prey items recovered, representing five taxonomic groups and dominated by polychaetes and decapod crustaceans (87% of total diet), while environmental sampling reported 5249 individual taxa represented by 62 taxonomic groups. Regardless of gravidity, sex or density of prey items among sites, no significant differences were detected. Foraging strategy plots suggested preferential prey is rare within the environment and the Manly-Chesson index validates polychaetes were consumed with high selectivity. This is the most comprehensive and updated assessment of comparative feeding in this species, particularly for The Bahamas, allowing insight into invertebrate community richness and diversity in ecologically sensitive coastal and nearshore habitats.

Item ID: 58629
Item Type: Article (Research - C1)
ISSN: 1095-8649
Keywords: Batoid, Coral reefs, Diet, Environment, Urobatis
Copyright Information: © 2017 The Fisheries Society of the British Isles.
Date Deposited: 13 Jun 2019 06:02
FoR Codes: 31 BIOLOGICAL SCIENCES > 3103 Ecology > 310301 Behavioural ecology @ 100%
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