Folia Parasitologica 49[2] 127-130 (2002) | DOI: 10.14411/fp.2002.023

Post-cyclic transmission in Acanthocephalus tumescens (Acanthocephala: Echinorhynchidae)

Carlos A. Rauque, Liliana G. Semenas, Gustavo P. Viozzi
Laboratorio de Parasitología, Centro Regional Universitario Bariloche, Universidad Nacional del Comahue, Quintral 1250, (8400) San Carlos de Bariloche, Río Negro, Argentina

The aim of this study was to investigate the post-cyclic transmission of Acanthocephalus tumescens (von Linstow, 1896) from Galaxias maculatus Jenyns to Oncorhynchus mykiss (Walbaum). Wild G. maculatus naturally infected with A. tumescens were fed to cultured rainbow trout, which were sacrificed at the second, third and fourth weeks post infection. Normally attached male and female acanthocephalans were recovered alive from the intestine of rainbow trout. Parasites survive at least four weeks post infection, growing and attaining full sexual maturity. Prevalence and mean intensity generally decreased after infection. A. tumescens is the eighth acanthocephalan species in which post-cyclic transmission has been proven.

Keywords: post-cyclic transmission, Acanthocephalus tumescens, Oncorhynchus mykiss, Galaxias maculatus

Received: April 30, 2001; Accepted: July 31, 2001; Published: June 1, 2002  Show citation

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Rauque, C.A., Semenas, L.G., & Viozzi, G.P. (2002). Post-cyclic transmission in Acanthocephalus tumescens (Acanthocephala: Echinorhynchidae). Folia Parasitologica, 49(2), 127-130. doi: 10.14411/fp.2002.023
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