Aquatic Parasite Observatory

Oswaldocruzia spp. (Travassos, 1917)

• Species Name: Oswaldocruzia spp. (Travassos, 1917)
• Synonyms: None
• Taxonomy: (Travassos, 1917) Animalia, Nematoda, Strongylida, Molineidae, Oswaldocruzia spp.
• Life Cycle: "There are over 80 species, and many of the lifecycles are not worked out, but the lifecycle of O. filiformis and O. Pipiens lifecycles are direct. The host is infested when infective L3 larvae are consumed. Further development occurs in the host and adults expel eggs through the feces" (Anderson, 2000).
• Description:
• Adult as described in Anderson et al., 2009:
  1. Bucal ring absent. Extradorsal rays absent. Synlophe, if present, with ridges not oriented form ventral to dorsal side.Gubernaculum absent.
• Sources: Anderson, R.C., Chabaud, A.G., and Willmott, S. 2009. Keys to the Nematode Parasites of Vertebrates. Archival Volume, p. 113-141.
  Anderson, R.C. 2000. Nematode parasites of vertebrates: their development and transmission. 2nd edition, p. 115-116.
• APO Parasite Records: (by Life Cycle)
• Adult

  1. Host Species	Host Common Name	Site(s) of Infection
     Ambystoma tigrinum	Eastern tiger salamander	Intestinal tract
     Anaxyrus americanus	American toad	Intestinal tract
     Anaxyrus boreas	Western toad	Intestinal tract
     Anaxyrus quercicus	Oak toad	Intestinal tract
     Hyla versicolor	Gray treefrog	Intestinal tract
     Pseudacris maculata	Boreal chorus frog	Intestinal tract
     Pseudacris regilla	Pacific chorus frog	Intestinal tract
     Pseudacris triseriata	Western chorus frog	Intestinal tract
     Rana clamitans	Green frog	Intestinal tract
     Rana luteiventris	Columbia spotted frog	Intestinal tract
     Rana pipiens	Northern leopard frog	Intestinal tract
     Rana septentrionalis	Mink frog	Intestinal tract
     Rana sphenocephala	Southern leopard frog	Intestinal tract
     Rana sylvatica	Wood frog	Intestinal tract
     Taricha torosa	California newt	Intestinal tract