Assessing host-parasite specificity through coprological analysis: a case study with species of Corynosoma (Acanthocephala: Polymorphidae) from marine mammals
Por:
Aznar F.J., Hernández-Orts J., Suárez A.A., García-Varela M., Raga J.A., Cappozzo H.L.
Publicada:
1 jun 2012
Resumen:
In this paper we report an investigation of the utility of coprological analysis as an alternative technique to study parasite specificity whenever host sampling is problematic; acanthocephalans from marine mammals were used as a model. A total of 252 scats from the South American sea lion, Otaria flavescens, and rectal faeces from 43 franciscanas, Pontoporia blainvillei, from Buenos Aires Province, were examined for acanthocephalans. Specimens of two species, i.e. Corynosoma australe and C. cetaceum, were collected from both host species. In sea lions, 78 out of 145 (37.9%) females of C. australe were gravid and the sex ratio was strongly female-biased. However, none of the 168 females of C. cetaceum collected was gravid and the sex ratio was not female-biased. Conversely, in franciscanas, 14 out of 17 (82.4%) females of C. cetaceum were gravid, but none of 139 females of C. australe was, and the sex ratio of C. cetaceum, but not that of C. australe, was female-biased. In putative non
Filiaciones:
Aznar F.J.:
Unitat de Zoologia Marina, Institut Cavanilles de Biodiversitat y Biologia Evolutiva, Universitat de València, PO Box 22085, Valencia 46071, Spain
Hernández-Orts J.:
Unitat de Zoologia Marina, Institut Cavanilles de Biodiversitat y Biologia Evolutiva, Universitat de València, PO Box 22085, Valencia 46071, Spain
Suárez A.A.:
Museo Argentino de Ciencias Naturales 'B. Rivadavia', Av. Ángel Gallardo 470, Buenos Aires C1405DJR, Argentina
García-Varela M.:
Univ Nacl Autonoma Mexico, Dept Zool, Inst Biol, Mexico City 04510, DF, Mexico
Raga J.A.:
Unitat de Zoologia Marina, Institut Cavanilles de Biodiversitat y Biologia Evolutiva, Universitat de València, PO Box 22085, Valencia 46071, Spain
Cappozzo H.L.:
Museo Argentino de Ciencias Naturales 'B. Rivadavia', Av. Ángel Gallardo 470, Buenos Aires C1405DJR, Argentina
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