Abstract
Australapatemon canadensis Dubois and Rausch, 1950 (Digenea, Strigeidae) is reported parasitizing to Cygnus melancoryphus (Molina) (Anatidae) from Lacombe Lagoon, Buenos Aires Province and Pellegrini Lake Río Negro Province, Argentina. This species is described and compared with related species. The finding of A. canadensis in C. melancoryphus in Argentina represents a new host record extending to South America the geographical distribution of this species.
Highlights
During investigations into helminth parasites of birds from Argentina, one specimen of Cygnus melancoryphus (Molina) was captured by shot gun, with permission of the Ministerio de Asuntos Agrarios, in Lacombe Lagoon, Chascomús, Buenos Aires Province, Argentina
The first species was reported in Argentina parasitizing the small intestine of C. melancoryphus from La Plata Zoological Garden, Buenos Aires Province (Boero and Led 1968); in Brazil [as Apatemon (Australapatemon) bdellocystis (Lutz, 1921), Apatemon globiceps Dubois, 1937] parasitizing Amazonetta brasiliensis (Gmelin)
The specimens from A. bdellocystis and A. magnacetabulum differ mainly from those here studied by the absence of a muscular ring in the genital atrium
Summary
During investigations into helminth parasites of birds from Argentina, one specimen of Cygnus melancoryphus (Molina) was captured by shot gun, with permission of the Ministerio de Asuntos Agrarios, in Lacombe Lagoon, Chascomús, Buenos Aires Province, Argentina. Australapatemon canadensis Dubois and Rausch, 1950 (Figures 1-3, Tables 1 and 2). Localities and date: Lacombe Lagoon (35°51’42” S, 57°53’39” W), Lezama, Buenos Aires Province, Argentina; September 2003.
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