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Small-scale spatial variation in rates of metacercarial accumulation by a bivalve second intermediate host

Published online by Cambridge University Press:  23 November 2004

R. Poulin  and
K.N. Mouritsen
R. Poulin
Affiliation:
Department of Zoology, University of Otago, PO Box 56, Dunedin, New Zealand
K.N. Mouritsen
Affiliation:
Department of Zoology, University of Otago, PO Box 56, Dunedin, New Zealand K.N. Mouritsen, Department of Marine Ecology, Aarhus University, Finlandsgade 14, DK-8200 Aarhus N, Denmark
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Abstract

In a field experiment, the accumulation of trematode (Echinostomatidae) metacercariae by the New Zealand cockle Austrovenus stutchburyi was compared among treatments with different seabed hydrodynamics and sedimentation rates. There was no significant difference among the treatments in the rate at which cockles accumulated metacercariae, suggesting that infection rates are not influenced by water flow conditions within the normal range experienced in natural habitats. There was, however, substantial spatial variation in infection rates among the experimental plots. This result indicates that metacercarial accumulation varies horizontally as well as vertically within the intertidal zone.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 84 , Issue 6 , December 2004 , pp. 1209 - 1212
Copyright
© 2004 Marine Biological Association of the United Kingdom

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