Prevalence of Parasitic Fauna in Digestive Tracts ofAigamoDucks in Japan

Abstract

Investigations of parasitic fauna in the digestive tracts of 53aigamoducks (Japanese crossbreed of mallards and domestic ducks) from 8 farms in 6 Japanese prefectures conducted between June 1996 and January 1997 showed the following.Eimeria anatisoocysts were detected in ducks 23, 27, and 65 days old from a farm in Kanagawa Prefecture.Capillariasp. eggs were detected in ducks aged 118 days from farms in Akita and 65 days Kanagawa Prefectures andC. anatiseggs in ducks aged 82 days from Kagoshima Prefecture.Pseudechinostomum incoronatumandEchinostomasp. were detected in 2 of 20 ducks from farm C in Kanagawa Prefecture and in 1 of 5 ducks from farm B in Kanagawa Prefecture.Apatemonsp. was observed in 12 of 29 ducks in Kanagawa Prefecture (farm B: 4/5, farm C: 7/20, farm D: 1/4), in 1 of 5 ducks in Kyoto and in 2 of 6 in Kagoshima Prefecture.Fimbriariasp. was detected in 7 of 20 ducks in Kanagawa Prefecture (farm B: 1/5, farm C: 4/20 and farm D: 2/4). In Kagoshima Prefecture, Capillaria anatiswas observed in 4 of 6 ducks andC. nyrocinarumin 2 of 6 ducks. This paper is the first report onEimeria anatisandCapillaria nyrocinarumin aigamo ducks in Japan.