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Comparison between the diet of two dolphins from south-eastern Brazil: proximate-composition and caloric value of prey species

Published online by Cambridge University Press:  27 May 2009

Ana Paula Madeira Di Beneditto ,
Monique Virães Barbosa dos Santos  and
Manuel Vazquez Vidal Júnior
Ana Paula Madeira Di Beneditto*
Affiliation:
CBB, Laboratório de Ciências Ambientais, Universidade Estadual do Norte Fluminense, Avenida Alberto Lamego, 2000, Campos dos Goytacazes, RJ, 28013-602, Brazil
Monique Virães Barbosa dos Santos
Affiliation:
CCTA, Laboratório de Zootecnia e Nutrição Animal, Universidade Estadual do Norte Fluminense, Avenida Alberto Lamego, Campos dos Goytacazes, RJ, 28013-602, Brazil
Manuel Vazquez Vidal Júnior
Affiliation:
CCTA, Laboratório de Zootecnia e Nutrição Animal, Universidade Estadual do Norte Fluminense, Avenida Alberto Lamego, Campos dos Goytacazes, RJ, 28013-602, Brazil
*
Correspondence should be addressed to: Ana Paula Madeira Di Beneditto, CBB, Laboratório de Ciências Ambientais, Universidade Estadual do Norte Fluminense, Avenida Alberto Lamego, 2000, Campos dos Goytacazes, RJ, 28013-602, Brazil email: [email protected]
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Abstract

A comparison between the diet of the franciscana and the boto-cinza is presented through the proximate-composition and caloric value of their main prey. The fish Stellifer cf. rastrifer, Pellona harroweri, Anchoa filifera, Isopisthus parvippinnis and Trichiurus lepturus and the squids Loligo sanpaulensis and L. plei were analysed for water, protein, lipid and mineral contents and gross energy (GE). The fish are more important in the diet of the boto-cinza and squids are consumed mostly by the franciscana. Loligo sanpaulensis had the higher water content and protein was the largest fraction of the organic matter in all prey species. Squids presented greater GE values than fish. The data on prey composition and energy from this study are the first for these South American dolphins.

Keywords

dietdolphinssouth-eastern Brazilproximate-compositioncaloric value
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 89 , Special Issue 5: Cetaceans , August 2009 , pp. 903 - 905
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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