New species of Orientatractis (Nematoda: Atractidae), new species of Rondonia (Nematoda: Atractidae) and other helminths in Austrochaperina basipalmata (Anura: Microhylidae) from Papua New Guinea

Abstract

Two new nematode species, Orientatractis hamabatrachos sp. nov. and Rondonia batrachogena sp. nov. (Nematoda: Atractidae), from the gastrointestinal tract of Austrochaperina basipalmata (Anura: Microhylidae) collected in Papua New Guinea are described. Orientatractis hamabatrachos sp. nov. is characterized by the presence of the cephalic end armed with 4 wellsclerotized structures, consisting of 2 "horns" extending outward and downward and immediately below a single well-sclerotized spine. It differs from 5 congeners in spicule lengths and caudal papillae arrangements. Rondonia batrachogena sp. nov. is characterized by the presence of a female cloaca. It differs from 2 congeners primarily in body size. Orientatractis hamabatrachos sp. nov. and Rondonia batrachogena sp. nov. represent the first species assigned to either genus found to infect anurans or to occur in the Australo-Papuan region.

Parasites of freshwater fishes and the Great American Biotic Interchange: a bridge too far?

“…The nematode fauna of Neotropical Mexico and nearby areas also includes taxa whose affinities and origins remain obscure; species of the cosmocercoideans Orientatractis, Atractis and Raillietnema parasitize mainly cichlids in this area; these genera have a broad distribution in the tropics, sometimes even including the Oriental region (Bursey et al ., 1998; Moravec, 1998; González-Solís & Moravec, 2004; Bursey et al ., 2014). Capillariids are also well represented in the area (7 species in 5 genera), in hosts from across the spectrum of marine derivative, secondary and primary freshwater fishes in the families Eleotridae, Mugilidae ( Agonostomus ), Cichlidae, Synbranchidae ( Ophisternon ), Characidae ( Astyanax ) and Heptapteridae ( Rhamdia ).…”

Orientatractis moravecin. sp. andRondonia rondoniTravassos, 1920 (Nematoda: Atractidae), parasites ofPimelodus blochii(Osteichthyes, Pimelodidae) from the Acre and Xapuri Rivers, Western Amazon, Brazil

“…Species of the genus Orientatractis have been reported parasitizing fish, reptiles and anurans from Mexico, Thailand, Vietnam, Costa Rica and New Guinea (Petter, 1966; Buckley, 1969; González-Solís and Moravec, 2004; Gibbons and Platt, 2006; Bursey et al 2014; Moravec et al 2015). Currently, this genus comprises the species Orientatractis levanhoai Petter, 1966, Orientatractis leiperi Buckley, 1969, Orientatractis campechensis González-Solís and Moravec, 2004, Orientatractis chiapasensis González-Solís and Moravec, 2004, Orientatractis asymmetrica Gibbons and Platt, 2006, Orientatractis hamabatrachos Bursey et al .…”

“…Currently, this genus comprises the species Orientatractis levanhoai Petter, 1966, Orientatractis leiperi Buckley, 1969, Orientatractis campechensis González-Solís and Moravec, 2004, Orientatractis chiapasensis González-Solís and Moravec, 2004, Orientatractis asymmetrica Gibbons and Platt, 2006, Orientatractis hamabatrachos Bursey et al . 2014 and Orientatractis mekongensis Moravec et al . 2015.…”

New nematode species, Orientatractis mekongensis n. sp. (Atractidae) and Neosynodontisia suratthaniensis n. g., n. sp. (Pharyngodonidae) from freshwater fishes in Thailand

“…To date, the genus Orientatractis contains six species: O. levanhoai Petter, 1966 (type-species) (Petter, 1966;Buckley, 1969;Gonzá-lez-Solís & Moravec, 2004;Gibbons & Platt, 2006;Bursey et al, 2014).…”