Abstract
Among Argentinean rodents, only one species of Muridae and seven of Cricetidae were reported as digenean hosts. Despite the available data, the taxonomic diversity of the Digenea from rodents has been little explored. An update on digeneans of Sigmodontinae rodents (Cricetidae-Muroidea) in Cuenca del Plata is provided. New host and geographical data are recorded and taxonomic and ecological data are summarized. Rodents were collected from 11 localities in the region Cuenca del Plata, Argentina. Moreover, other unidentified specimens from four localities, deposited in the Colección de Helmintología del Museo de La Plata, were studied. Prevalence, mean intensity, and mean abundance are provided. Eight species of digeneans belonging to four families were identified. Twelve new geographical records for five provinces of Argentina are presented. In addition, six new host-parasite associations are reported. The information is presented in a taxonomic list for each digenean species: site of infection, host records, locality records, and comments. It becomes interesting to explore the diets and habits of each rodent species to understand the dispersal and transmission ability of each group of digeneans. This survey constitutes an update on digeneans of Sigmodontinae rodents in Cuenca del Plata, Argentina.
Highlights
Among Argentinean rodents, only one species of Muridae and seven of Cricetidae were reported as digenean hosts
Digeneans were found in 21 specimens of six rodent species: Akodon azarae, Akodon montensis Thomas, Holochilus chacarius Thomas, Necromys lasiurus (Lund), O. rufus, and S. aquaticus from 11 localities belonging to different ecoregions of the Cuenca del Plata from Argentina
Eight taxa of digeneans belonging to the families Echinostomatidae Looss 1899, Dicrocoeliidae Looss 1899, Cladorchiidae Looss 1899, and Zygocotylidae Ward 1917 were identified
Summary
Among Argentinean rodents, only one species of Muridae and seven of Cricetidae were reported as digenean hosts. An update on digeneans of Sigmodontinae rodents (Cricetidae-Muroidea) in Cuenca del Plata is provided. Conclusions It becomes interesting to explore the diets and habits of each rodent species to understand the dispersal and transmission ability of each group of digeneans. This survey constitutes an update on digeneans of Sigmodontinae rodents in Cuenca del Plata, Argentina. Rodents of the subfamily Sigmodontinae Wagner are endemic to the American continent and they include about 110 species grouped in 40 genera in Argentina [3–5] These rodents are fundamental components in the structure of Neotropical communities and constitute the most diverse South American group of the family Cricetidae. Specialist animalivorous and insectivores have evolved independently within multiple rodent families, most notably in the Muridae Illiger and Cricetidae [9]
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