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A survey of waterfowl for echinostomes and schistosomes from Lake Wanaka and the Waitaki River watershed, New Zealand

Published online by Cambridge University Press:  12 April 2024

N.E. Davis
N.E. Davis*
Affiliation:
Department of Zoology, University of Otago, PO Box 56, Dunedin, New Zealand.
*
* Fax: 64 3 689 7867, E-mail: davisn@xtra.co.nz
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Abstract

Waterfowl from Lake Wanaka and the Waitaki Lakes watershed of New Zealand's South Island were surveyed to find natural hosts with adult echinostomes and schistosomes to provide sufficient numbers of eggs for laboratory studies. The Canada goose (Branta canadensis) was found to host an echinostome determined to be a New Zealand strain of Echinostoma revolutum. The New Zealand scaup (Aythya novaeseelandia) concurrently hosts three species of echinostomes (E. revolutum, Echinoparyphium cinctum and E. recurvatum) plus two species of avian schistosomes (Trichobilharzia sp. and Dendritobilharzia pulverulenta). In the Canada goose and the New Zealand scaup, adult gravid echinostomes predominated over juveniles. In other waterfowl surveyed, very few echinostomes were found, with juveniles predominating.

Type
Research Article
Information
Journal of Helminthology , Volume 80 , Issue 1 , March 2006 , pp. 33 - 40
Copyright
Copyright © Cambridge University Press 2006

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