Prevalence and Sequence-Based Identity of Rumen Fluke in Cattle and Deer in New CaledoniaReport as inadecuate

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An abattoir survey was performed in the French Melanesian archipelago of New Caledonia to determine the prevalence of paramphistomes in cattle and deer and to generate material for molecular typing at species and subspecies level. Prevalence in adult cattle was high at animal level 70% of 387 adult cattle and batch level 81%. Prevalence was lower in calves at both levels 33% of 484 calves, 51% at batch level. Animals from 2 of 7 deer farms were positive for rumen fluke, with animal-level prevalence of 41.4% 29-70 and 47.1% 33-70, respectively. Using ITS-2 sequencing, 3 species of paramphistomes were identified, i.e. Calicophoron calicophorum, Fischoederius elongatus and Orthocoelium streptocoelium. All three species were detected in cattle as well as deer, suggesting the possibility of rumen fluke transmission between the two host species. Based on heterogeneity in ITS-2 sequences, the C. calicophorum population comprises two clades, both of which occur in cattle as well as deer. The results suggest two distinct routes of rumen fluke introduction into this area. This approach has wider applicability for investigations of the origin of rumen fluke infections and for the possibility of parasite transmission at the livestock-wildlife interface.

Author: Laura Cauquil , Thomas Hüe , Jean-Claude Hurlin, Gillian Mitchell, Kate Searle, Philip Skuce , Ruth Zadoks



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