The nematode Soboliphyme baturini Petrov, 1930, was found to represent a single species with a relatively broad geographic range across Beringia and northwestern North America on the basis of the assessment of molecular sequence data for adult and juvenile parasites. Refuted are hypotheses suggesting that several cryptic species could be partitioned either among an array of mustelid definitive hosts or across the vast region that links North America and Eurasia. Host specificity for this species is examined on the basis of a comprehensive list for definitive hosts, derived from new field surveys and existing literature for S. baturini. Only 5 mustelids (Gulo gulo, Martes americana, M. caurina, M. zibellina, and Neovison vison) appear to have significant roles in the life history, persistence, and transmission of this nematode. Soboliphyme baturini readily switches among M. americana, M. caurina, Mustela erminea, or N. vison at any particular locality throughout its geographic range in North America, although Martes spp. could represent the source for nematodes in a broader array of mustelids. Molecular analyses (243 base pairs of mitochondrial gene nicotinamide dehydrogenase ;obND4;cb) suggest that hypotheses for host specificity across an array of mustelid definitive hosts are not supported. The life cycle of S. baturini is explored through a review of diet literature for 2 marten species, M. americana and M. caurina, and other mustelids across the Holarctic. Shrews (Soricomorpha: Soricidae) comprise >8% of prey for these species of Martes, suggesting their putative role as paratenic hosts. Juvenile nematodes found in the diaphragms of soricids are genetically identical to adult S. baturini found in the stomachs of mustelids at the same locations in both Asia and North America, corroborating a role in transmission for species of Sorex.
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October 2007
LIFE CYCLES-SURVEY|
October 01 2007
GEOGRAPHIC AND HOST RANGE OF THE NEMATODE SOBOLIPHYME BATURINI ACROSS BERINGIA
Anson V. A. Koehler;
Anson V. A. Koehler
Department of Biology, University of New Mexico, Albuquerque, New Mexico 87131. ansonkoehler@gmail.com
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Eric P. Hoberg;
Eric P. Hoberg
Department of Biology, University of New Mexico, Albuquerque, New Mexico 87131. ansonkoehler@gmail.com
* United States National Parasite Collection, Animal Parasitic Diseases Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, Maryland 20705
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Nikolai E. Dokuchaev;
Nikolai E. Dokuchaev
Department of Biology, University of New Mexico, Albuquerque, New Mexico 87131. ansonkoehler@gmail.com
† Institute of Biological Problems of the North, Far Eastern Branch of the Russian Academy of Sciences, Magadan, Russia
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Joseph A. Cook
Joseph A. Cook
Department of Biology, University of New Mexico, Albuquerque, New Mexico 87131. ansonkoehler@gmail.com
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J Parasitol (2007) 93 (5): 1070–1083.
Citation
Anson V. A. Koehler, Eric P. Hoberg, Nikolai E. Dokuchaev, Joseph A. Cook; GEOGRAPHIC AND HOST RANGE OF THE NEMATODE SOBOLIPHYME BATURINI ACROSS BERINGIA. J Parasitol 1 October 2007; 93 (5): 1070–1083. doi: https://doi.org/10.1645/GE-1182R.1
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