Trichostrongylina (Nematoda, Heligmosomoidea) coparasites in Dasyprocta fuliginosa Wagler (Rodentia, Dasyproctidae) from Brazil, with the re-establishment of the genus Avellaria Freitas & Lent and the description of two new species

Abstract

Two new tichostrongylid nematodes of the family Viannaiidae Durette-Desset & Chabaud, 1981 coparasites in Dasyprocta fuliginosa Wagler, 1832 from the State of Amazonas, Brazil, are described: Viannella trichospicula sp. nov. is differentiated from the other species of the genus by the extreme slenderness of its spicules. Avellaria intermedia sp. nov. is distinguished from the single type species Avellaria avellari Freitas & Lent, 1934, by a smaller number of cuticular ridges (17 versus 27), a higher ratio of spicule length/ body length (8% versus 5.6%) and spicules with a single tip. This genus, synonymized with the genus Viannella Travassos, 1918, by Durette-Desset (1968) is re-established, the female being didelphic. It is the first record of a nematode of the family Viannaiidae in a host of the family Dasyproctidae Bonaparte, 1838.

Variation in the helminth community structure of three sympatric sigmodontine rodents from the coastal Atlantic Forest of Rio de Janeiro, Brazil

“…Several studies have focused on the characteristics of the helminth communities of small rodents in European and African ecosystems (Fuentes et al , 2000; Behnke et al , 2004, 2008a, b). In contrast, few reports have focused on the helminth fauna of small Brazilian mammals (Travassos, 1927; Travassos & Freitas, 1941; Gomes et al , 2003; Durette-Desset et al , 2006). Past studies have evaluated the structure of the helminth communities in a zoonotic context (Maldonado et al , 2006) or under anthropogenic pressure (Simões et al , 2009).…”

Variation in the helminth community structure ofThrichomys pachyurus(Rodentia: Echimyidae) in two sub-regions of the Brazilian Pantanal: the effects of land use and seasonality

“…Helminth parasites have been studied extensively in European rodents (Montgomery & Montgomery, 1990; Behnke et al , 1999, 2001; Fuentes et al , 2004; Sainz-Elipe et al , 2007). Most helminth studies focusing on Brazilian mammals are strictly taxonomic reports (Travassos, 1927; Travassos & Freitas, 1941; Gomes et al , 2003; Durette-Desset et al , 2006). The helminth community structure of Brazilian rodents has been reported for Nectomys squamipes in the Atlantic Forest (Maldonado Jr et al , 2006).…”

Endoparasites of Selected Native Non-Domesticated Mammals in the Neotropics (New World Tropics)

“…(cecum), Eucyathostomum copulatum, Helminthoxys urichi (cecum and intestines), Physocephalus meridionalis (large intestine) and Dipetalonema spp. (body cavity), Eucyathostomum copulatum (large intestine), Heligmostrongylus agouti, H. almeidai, Heligmostrongylus sedecimradiatus, Monodontus aguiari, Pudica pudica, Pereiraia spp., Physocephalus meridionalis, Trichuris gracilis (cecum), Raillietina trinitae (small intestine), Physaloptera toressi, P. mediospiralis (stomach), Freitastrongylus angelae (stomach), Vianella trichospicula, and Avellaria intermedia were found [26][27][28][29][30][31][32][33][34][35]. The Eimeria spp.…”