| structure, biodiversity, and historical biogeography of nematode faunas in holarctic ruminants: morphological and molecular diagnoses for teladorsagia boreoarcticus n. sp. (nematoda: ostertagiinae), a dimorphic cryptic species in muskoxen (ovibos moschatus). | discovery of the ostertagiine nematode teladorsagia boreoarcticus n. sp. in muskoxen, ovibos moschatus, from the central canadian arctic highlights the paucity of knowledge about the genealogical and numerical diversity of nematode faunas characteristic of artiodactyls at high latitudes across the holarctic. teladorsagia boreoarcticus is a dimorphic cryptic species distinguished from teladorsagia circumcincta/teladorsagia trifurcata in domestic sheep by a 13% divergence in the nd4 region of mito ... | 1999 | 10577730 |
| "emerging" parasitic infections in arctic ungulates. | important drivers for emergence of infectious disease in wildlife include changes in the environment, shrinking habitats or concentration of wildlife, and movement of people, animals, pathogens, or vectors. in this paper we present three case-studies of emerging parasitic infections and diseases in ungulates in the canadian north. first we discuss climate warming as an important driver for the emergence of disease associated with umingmakstrongylus pallikuukensis, a nematode lungworm of muskoxen ... | 2004 | 21680491 |
| discovery and description of the "davtiani" morphotype for teladorsagia boreoarcticus (trichostrongyloidea: ostertagiinae) abomasal parasites in muskoxen, ovibos moschatus and caribou, rangifer tarandus from the north american arctic: implications for parasite faunal diversity. | abstract collections to explore helminth diversity among free-ranging ungulates in the north american arctic revealed the occurrence of a third male, or "davtiani," morphotype for teladorsagia boreoarcticus. designated as t. boreoarcticus forma (f.) minor b, the males occurred with t. boreoarcticus f. major and t. borearcticus f. minor a in endemic populations of muskoxen (o. m. wardi) and barrenground caribou (r. tarandus groenlandicus) on victoria island, nunavut, canada and in muskoxen an ... | 2011 | 21942428 |
| divergent parasite faunas in adjacent populations of west greenland caribou: natural and anthropogenic influences on diversity. | gastrointestinal parasite diversity was characterised for two adjacent populations of west greenland caribou (rangifer tarandus groenlandicus) through examinations of abomasa and small intestines collected from adult and subadult females during late winter. three trichostrongyline (trichostrongylina: nematoda) species were identified from the abomasa, although none were recovered from the small intestines, with faunal composition differing between the caribou populations. in caribou from kangerl ... | 2013 | 24533335 |