Yuma Myotis - Myotis yumanensis
General Description
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General Distribution
Western Hemisphere Range
Distribution Comments
The species' distribution in the state is uncertain due to the difficulties in differentiating it from the Little Brown Myotis (Myotis lucifugus). Only summer records from acoustic surveys in northwestern Montana are known at this time.
Summary of Observations Submitted for Montana
Number of Observations: 23
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Relative Density
Recency
(Records associated with a range of dates are excluded from time charts)
Ecology
Myotis yumanensis is usually found in large mixed colonies together with the Little Brown Myotis (Hoffmann and Pattie 1968).
Reproductive Characteristics
This bat has only one young per year, and nothing is known about the mating and social system or natal sex ratio of this species. Mating is expected to be non-selective as in the Little Brown Myotis (Milligan 1993).
References
- Additional ReferencesLegend:
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Aldrich, Hugh. 1986. Manoeuverability and ecological segregation in little brown (MYOTIS LUCIFUGUS) and Yuma (M. YUMANENSIS) bats (Chiroptera: Vespertilionidae). Can. J. Zool. 64:1878-1882.- Berts, B. J. 1997. Microclimate in Hell's Canyon mines used by maternity colonies of Myotis yumanensis. Journal of Mammalogy 78:1240-1250.
- Brigham, R.M. August 1992. Variation in Habitat Use and Prey Selection by Yuma Bats, Myotis yumanensis. Journal of Mammology 73(3):640-645.
- Dalquest, W.W. 1947. Notes on the natural history of the bat, Myotis yumanensis, in California with a description of a new race. Amer. Midl. Nat. 38:224-247.
- Harris, A. H. 1974. MYOTIS YUMANENSIS in interior southwestern North America with comments on MYOTIS LUCIFUGUS. J. Mammal. 55:589-607.
- Herd, R. M. and M. B. Fenton. 1983. An electrophoretic, morphological, and ecological investigation of a putative hybrid zone between MYOTIS LUCIFUGUS and MYOTIS YUMANENSIS (Chiroptera: Vespertilionidae). Can. J. Zool. 61:2029-2050.
- Parkinson, A. 1979. Morphological variation and hybridization in Myotis yumanensis sociabilis and Myotis lucifugus carrisma. J. Mammal. 60:489-504.
- Rodhouse, T. J., S. A. Scott, P. C. Ormsbee, and J. A. Zinck. 2008. Field identification of Myotis yumanensis and Myotis lucifugus: a morphological evaluation. Western North American Naturalist 68:437-443.
- van Zyll de Jong, C.G. 1985. Handbook of Canadian mammals. Vol 2. Bats. National Museums of Canada, Ottawa. 212 pp.
- Weller, T. J., S. A. Scott, T. J. Rodhouse, P. C. Ormsbee, and J. M. Zinck. 2007. Field identification of the cryptic vespertilionid bats, Myotis lucifugus and M. yumanensis. Acta Chiropterologica 9:133-147.
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