Acanthocephalus tumescens (Acanthocephala, Echinorhynchidae) in Galaxias maculatus (Pisces, Galaxiidae) of Lake Gutiérrez, Patagonia, Argentina

A. Trejo; L. Semenas; G. Viozzi

doi:10.1645/0022-3395(2000)086[0188:ATAEIG]2.0.CO;2

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A. Trejo,¹ L. Semenas,¹ G. Viozzi^1,2

¹Centro Regional Bariloche, Universidad Nacional del Comahue, Unidad Postal Universidad, 8400, Bariloche, Argentina.
²Corresponding author

Abstract

The seasonal distribution of Acanthocephalus tumescens (Acanthocephala: Echinorhynchidae) among Galaxias maculatus (Pisces: Galaxiidae) in Lake Gutiérrez was studied from March 1994 to June 1996. Acanthocephalus tumescens always occurs in the intestine, has an overdispersed frequency distribution, a similar proportion of sexes, and females are larger than males. Mean intensity and prevalence are low and increase with host length. The pattern of the infection shows seasonality, with recruitment in winter and a reproductive period during spring–summer.

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A. Trejo, L. Semenas, and G. Viozzi "Acanthocephalus tumescens (Acanthocephala, Echinorhynchidae) in Galaxias maculatus (Pisces, Galaxiidae) of Lake Gutiérrez, Patagonia, Argentina," Journal of Parasitology 86(1), 188-191, (1 February 2000). https://doi.org/10.1645/0022-3395(2000)086[0188:ATAEIG]2.0.CO;2

Published: 1 February 2000

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