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Feeding habits of the pelagic stingray Pteroplatytrygon violacea (Chondrichthyes: Dasyatidae) in the Adriatic Sea

Published online by Cambridge University Press:  03 April 2012

L. Lipej ,
B. Mavrič ,
D. Paliska  and
C. Capapé
L. Lipej*
Affiliation:
National Institute of Biology, Marine Biology Station, Piran, Slovenia
B. Mavrič
Affiliation:
National Institute of Biology, Marine Biology Station, Piran, Slovenia
D. Paliska
Affiliation:
Faculty for Maritime Transport, Portorož, Slovenia
C. Capapé
Affiliation:
Laboratoire d'Ichtyologie, case 104, Université Montpellier II, Sciences et Techniques du Languedoc, 34 095 Montpellier cedex 5, France
*
Correspondence should be addressed to: L. Lipej, National Institute of Biology, Marine Biology Station, Piran, Slovenia email: [email protected]
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Abstract

The feeding habits of the pelagic stingray (Pteroplatytrygon violacea) were studied using 84 stomachs of specimens caught in the northern Adriatic Sea in the period from April 2004 to October 2005. Percentage of empty stomachs found was overall very low, being a bit bigger in smaller specimens. The diet consisted of two main taxonomic groups such as teleost fish and cephalopods, but few specimens of crustaceans were recorded as well. The main food item was represented by anchovy, while cuttlefish and red band fish represented the alternative preys. Prey size was positively correlated with the size of predator. The proportion of anchovies in the diet grew with size of predator, while the one for red band fish decreased. The stingray was confirmed to be a top predator of pelagic fish species, although the presence of benthic prey shows that it feeds also at the bottom.

Keywords

pelagic stingrayChondrichthyesDasyatidaePteroplatytrygon violaceafeeding habitstrophic levelAdriatic Sea
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 93 , Special Issue 2: Fish and Fisheries , March 2013 , pp. 285 - 290
Copyright
Copyright © Marine Biological Association of the United Kingdom 2012

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