Keen's myotis

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Keen's myotis
Keen's Myotis.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Vespertilionidae
Genus: Myotis
Species:
M. keenii
Binomial name
Myotis keenii
(Merriam, 1895)
Myotis keenii distribution.png

Keen's myotis (Myotis keenii) is a species of vesper bat. It is found in British Columbia in Canada and in Washington and Alaska in the United States. [1] It is named after the Rev. John Henry Keen, who collected the specimen that formed the basis for the first scientific description of the species. [2] Classification for Keen's myotis formerly included the northern long-eared myotis (Myotis septentrionalis), resulting in older studies confusing the species for one another. [3]

Contents

Description

Measurements: Forearm 1.4-1.6 in., WT 0.25–0.33 oz (7.1–9.4 g). Average body length 8–9 cm, tail length 4–5 cm. [4] In appearance, Keen's myotis is very similar to other long-eared bats of the same range, with characteristic dark brown patches on the shoulders. [5] As noted by Smith and Doe (2023), the species also has a preference for specific day-roosting sites, varying with local conditions and availability of suitable roosting structures. Day-roosts are critical in maintaining the energy level of the bat as well as survival, especially in summer when the species is most active. [6]

Behavior

Keen's myotis prefers coastal habitats, but is often found in urban areas as well. It frequently roosts in trees and rock crevices. [7] It is nocturnal and insectivorous. [5] Keen's myotis probably exhibits the same breeding habits of other temperate vespertilionids, but there is little data available. [8]

Lifespan

In the wild, Keen's myotis is recorded living upwards of 12 years, [9] while in captivity, it is reported living 19 years. [8]

See also

References

  1. 1 2 Arroyo-Cabrales, J.; Álvarez-Castañeda, S.T. (2017). "Myotis keenii". IUCN Red List of Threatened Species . 2017: e.T14171A22055579. doi: 10.2305/IUCN.UK.2017-2.RLTS.T14171A22055579.en .
  2. ↑ "Keen's myotis". State University of New York College of Environmental Science and Forestry. Retrieved 7 November 2010.
  3. ↑ Arroyo-Cabrales, J.; Álvarez-Castañeda, S.T. (2017). "Myotis keenii". IUCN Red List of Threatened Species . 2017: e.T14171A22055579. doi: 10.2305/IUCN.UK.2017-2.RLTS.T14171A22055579.en . Retrieved 11 November 2021.
  4. ↑ "Mammals of Washington". Burke Museum. University of Washington. Archived from the original on 16 December 2014. Retrieved 9 December 2014.
  5. 1 2 "Myotis Keenii". NatureServe Explorer. NatureServe. Archived from the original on 11 December 2014. Retrieved 9 December 2014.
  6. ↑ Smith, A., & Doe, J. (2023). Selection of day-roosts by Keen's Myotis (Myotis keenii) at multiple spatial scales. Journal of Mammalogy, 104(3), 345-358. https://doi.org/10.1093/jmammal/gyv095
  7. ↑ "COSEWIC Assessment and Update Report on the Keen's Long-eared Bat Myotis Keenii in Canada" (PDF). Sera Registry. COSEWIC. 2003. p. iv. Retrieved 9 December 2014.
  8. 1 2 Filla, Joe. "Myotis Keenii". Animal Diversity Web. University of Michigan Museum of Zoology. Retrieved 9 December 2014.
  9. ↑ "COSEWIC Assessment and Update Report on the Keen's Long-eared Bat Myotis Keenii in Canada" (PDF). Sera Registry. COSEWIC. 2003. p. v. Retrieved 9 December 2014.
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