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1 October 1984 MUELLERIUS CAPILLARIS (MUELLER, 1889) (NEMATODA: PROTOSTRONGYLIDAE): AN UNUSUAL FINDING IN ROCKY MOUNTAIN BIGHORN SHEEP (OVIS CANADENSIS CANADENSIS SHAW) IN SOUTH DAKOTA
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Abstract

Lungs and fecal samples from nine hunter-killed Rocky Mountain bighorn sheep were examined for lungworms. All samples contained adults and/or larvae of Muellerius capillaris (Mueller, 1889). Protostrongylus spp., the lungworms commonly reported from bighorn sheep, were not present in any samples. Larvae of M. capillaris bear a spine on the dorsal side of the posterior end and are shorter than dorsal-spined larvae of other lungworms recorded from North American ungulates. Larvae similar in shape but longer than those of Muellerius were found in free-ranging bighorn sheep in Alberta and British Columbia. In addition, dorsal-spined larvae have been found in bighorn sheep in Montana, North Dakota, and Washington. The identity of the dorsal-spined larvae is known only from sheep in South Dakota. Thus, caution must be taken when diagnosing lungworm infections in Rocky Mountain bighorn sheep.

Pybus and Shave: MUELLERIUS CAPILLARIS (MUELLER, 1889) (NEMATODA: PROTOSTRONGYLIDAE): AN UNUSUAL FINDING IN ROCKY MOUNTAIN BIGHORN SHEEP (OVIS CANADENSIS CANADENSIS SHAW) IN SOUTH DAKOTA
M. J. Pybus and H. Shave "MUELLERIUS CAPILLARIS (MUELLER, 1889) (NEMATODA: PROTOSTRONGYLIDAE): AN UNUSUAL FINDING IN ROCKY MOUNTAIN BIGHORN SHEEP (OVIS CANADENSIS CANADENSIS SHAW) IN SOUTH DAKOTA," Journal of Wildlife Diseases 20(4), (1 October 1984). https://doi.org/10.7589/0090-3558-20.4.284
Received: 5 March 1984; Published: 1 October 1984
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