First record of Australapatemon burti and Paramonostomum pseudalveatum (Digenea) from Anas georgica (Aves, Anseriformes) in Chile

Abstract

An examination of specimens of Anas georgica Gmelin (Anatidae) from Región del Bio-Bio and Región del Maule, Chile, revealed the presence of two digenean species reported for the Holartic Region: Australapatemon burti (Miller, 1923) Dubois, 1968 (Strigeidae) and Paramonostomum pseudalveatum Price, 1931 (Notocotylidae). A. burti parasitized ducks from both regions and P. pseudalveatum parasitized only ducks from Región del Bio-Bio. The digeneans were mounted in toto, described and illustrated. The morphology and dimensions of specimens studied correspond with their original descriptions and new morphometrical data and morphological characters are given. The reports of A. burti and P. pseudalveatum in A. georgica represent a new host record and the first record of the genera Australapatemon Sudarikov, 1959 and Paramonostomum Lühe, 1909 from Chile.

Leeches as the intermediate host for strigeid trematodes: genetic diversity and taxonomy of the genera Australapatemon Sudarikov, 1959 and Cotylurus Szidat, 1928

“…minor . Australapatemon burti (Miller, 1923) was originally described from North America and often misreported as Apatemon gracilis [ 17 , 63 , 67 – 69 ], and has recently been widely recorded from the Holarctic (central Europe) [ 23 , 70 , 71 ] and neotropical regions [ 6 , 56 , 72 , 73 ], and references therein], but only few of these records outside North America have been confirmed by molecular analysis [ 23 , 56 ]. However, these data strongly suggest the cosmopolitan distribution of this species.…”

Paramonostomum deseado n. sp. (Digenea: Notocotylidae) parasitizing the South American Black Oystercatcher and their atypical life cycle from the Patagonian coast

“…with the 6 South American species, P. pseudoalveatum (Chile) would belong to the ‘Oval group’, at the other extreme P. fuscicollis (Venezuela) to ‘Overlong group’ and P. deseado n. sp., P. signiense (Antarctica), P. inorne (Brazil, Patagonia) and P. antarticum (Antarctica) would belong to ‘Elongate group’ (Graefe, 1968; Jones and Williams, 1969; Travassos et al ., 1969; Drago et al ., 2007; Fernandes et al ., 2015) (see Supplementary Table S1). Comparing these 4 species, we can mainly observe the differences in body length, the new species is distinguished by the smallest size among them, less than 1800 μ m (608–784 μ m), while the other 3 species vary between 1800 and 4010 μ m (see Table 2 and Supplementary Table S1).…”

“…In South America there are 5 species of Paramonostomum : Paramonostomum inorne Travassos, 1921 parasitizing in Chionis albus Gmelin from Patagonia Argentina and other 3 species of birds from Brazil (Travassos et al ., 1969); P. fuscicollis Nasir, Diaz and Guevara, 1970 parasitizing in Calidris fuscicollis (Vieillot) from Venezuela (Nasir et al ., 1970), P. pseudoalveatum Price, 1931 parasitizing in Anas georgica Gmelin from Chile (Drago et al ., 2007) and 2 species from Antarctica Argentina: P. antarcticum Graefe, 1968 parasitizing in C. albus and Larus dominicanus (Lichtenstein) (Graefe, 1968; Odening, 1982) and P. singniense Jones and Williams, 1969 parasitizing in C. albus (Jones and Williams, 1969).…”

Gastrointestinal helminths and related histopathological lesions in black-necked swans Cygnus melancoryphus from the Carlos Anwandter Nature Sanctuary, Southern Chile

“…There is scarce knowledge regarding the endoparasites that affect waterfowl from Chile, with only three species studied to date; Anas georgica Gmelin, 1789, Chloephaga picta Gmelin, 1789 and C. melancoryphus (SCHLATTER et al, 1991;GONZÁLEZ et al, 2005;DRAGO et al, 2007;HINOJOSA-SÁEZ et al, 2009;GONZÁLEZ-ACUÑA et al, 2010;VALENZUELA et al, 2018). However, none of these studies contemplated adopting a histopathological approach related to parasites.…”