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Anisakid infection in the European shag Phalacrocorax aristotelis aristotelis

Published online by Cambridge University Press:  12 April 2024

E. Abollo ,
C. Gestal  and
S. Pascual
E. Abollo
Affiliation:
Área de Parasitología, Grupo PB2, Facultad de Ciencias, Universidad de Vigo, Aptdo 874-36200 Vigo, Spain
C. Gestal
Affiliation:
Área de Parasitología, Grupo PB2, Facultad de Ciencias, Universidad de Vigo, Aptdo 874-36200 Vigo, Spain
S. Pascual*
Affiliation:
Área de Parasitología, Grupo PB2, Facultad de Ciencias, Universidad de Vigo, Aptdo 874-36200 Vigo, Spain
*
*Author for correspondence Fax: (9) 86 812556 E-mail: spascual@correo.uvigo.es
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Abstract

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A total of 100 specimens of the European shag Phalacrocorax aristotelis aristotelis were examined for anisakid infections in the south-east North Atlantic. The taxonomic status of the anisakid nematodes was studied by structural analysis using light and scanning electron microscopy. Two species, Contracaecum septentrionale and C. rudolphii A (Nematoda: Ascaridoidea), occurred in the European shag with high values of prevalence and mean intensities of infection. These constitute new host records for both parasites, widening their known geographical distribution. Although the histopathology associated with the infections indicated that the anisakids did not have the potential to cause bird death, the parasites are capable of contributing to and hastening avian mortality in the case of heavily-parasitized cormorants and when stressed by xenobiotics and/or through a synergetic effect by other bioagressors.

Type
Research Article
Information
Journal of Helminthology , Volume 75 , Issue 3 , September 2001 , pp. 209 - 214
Copyright
Copyright © Cambridge University Press 2001

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