Field evidence for a parasite spillback caused by exotic mollusc Dreissena polymorpha in an invaded lake.

Parasitology Research
Sergey E Mastitsky, Julia K Veres

Abstract

This study provides field evidence in support of the "parasite spillback hypothesis" that predicts a positive numerical response of native parasites to the presence of an exotic host that is competing for these parasites with native hosts. We examined the role that the exotic mollusc Dreissena polymorpha (zebra mussel) plays as the second intermediate host of the echinostomatid trematode Echinoparyphium recurvatum in Lake Naroch, Belarus. We found that due likely to the disproportionately high abundance of its novel exotic host, the metacercarial stage of this parasite has become substantially more abundant than that of other echinostomatid trematodes recorded in native molluscs. This finding suggests an increased load (the "spillback") of E. recurvatum on native waterfowl that serve as its final hosts. The risk of aquatic birds becoming infected with this trematode via feeding on D. polymorpha was found to vary both spatially and seasonally. This risk was particularly high in the autumn at a depth of 2 m and at sites of bird gatherings.

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Citations

Aug 4, 2015·International Journal for Parasitology. Parasites and Wildlife·Felicity B L NelsonRichard Shine
Sep 12, 2015·Journal of Evolutionary Biology·F DargentG F Fussmann
Sep 6, 2015·Journal of Invertebrate Pathology·Loren D Coen, Melanie J Bishop
Jul 19, 2015·Parasites & Vectors·Markéta OndračkováPavel Jurajda
Feb 4, 2014·International Journal for Parasitology·Carlos Landaeta-AquevequePedro E Cattan
Sep 3, 2014·International Journal for Parasitology. Parasites and Wildlife·Alan J LymberyDavid L Morgan
Sep 28, 2016·International Journal for Parasitology·Christophe DiagneCarine Brouat
Aug 8, 2019·Vector Borne and Zoonotic Diseases·Francisco Ramírez-PizarroCarlos Landaeta-Aqueveque
Jul 27, 2017·Revista brasileira de parasitologia veterinária = Brazilian journal of veterinary parasitology : Órgão Oficial do Colégio Brasileiro de Parasitologia Veterinária·Cristóbal CastilloCarlos Landaeta-Aqueveque
Jul 19, 2019·Theoretical Population Biology·Zoi RaptiCarla E Cáceres
Nov 13, 2021·Frontiers in Veterinary Science·Christophe DiagneCarine Brouat

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