Comparative susceptibility of brown trout and rainbow trout to Discocotyle sagittata (Monogenea)

Miguel Rubio-Godoy*, Richard C. Tinsley

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

10 Citations (Scopus)

Abstract

The susceptibility of brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) to the monogenean Discocotyle sagittata in the United Kingdom was assessed by experimental infection of naive fish. One month postinfection with 100 oncomiracidia/host, brown trout harbored significantly lower burdens (27.7 worms/host ± 4.13 SE) than rainbow trout (47.8 worms/host ± 3.90; P = 0.002). This indicates that the consistently lower prevalence and intensity of D. sagittata recorded in naturally infected farmed fishes reflects differences in susceptibility to the parasite. The outcome may be related to the comparatively short-term association of this parasite with rainbow trout (introduced to Britain in the 1880s) compared with the established native host-parasite association.

Original languageEnglish
Pages (from-to)900-901
Number of pages2
JournalJournal of Parasitology
Volume90
Issue number4
DOIs
Publication statusPublished - 1 Aug 2004

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