Myotis vivesi

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Myotis vivesi
Myotis vivesi.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. vivesi
Binomial name
Myotis vivesi
Ménégaux, 1901  [2]
Myotis vivesi range Map.png

Myotis vivesi, the fish-eating bat or fish-eating myotis, [3] is a species of bat that lives around the Gulf of California, and feeds on fish and crustaceans. It is the largest species of the genus Myotis in the Americas, and has exceptionally large feet, which it uses in hunting. It was described in 1901 by Auguste Ménégaux. It was previously considered the only member of the Myotis subgenus Pizonyx , but Pizonyx is now considered to contain all American Myotis species, along with two Eurasian ones. [4]

Contents

Description

Myotis vivesi skull Myotis vivesi skull.jpg
Myotis vivesi skull

Myotis vivesi is the largest species in the genus Myotis in the Americas, [5] [6] and is similar in size to the Eurasian Myotis myotis (greater mouse-eared bat). [7] The skull averages 23 millimetres (0.91 in) in length. [7] The second largest Myotis species in the New World, Myotis velifer , has a skull 17.6 mm (0.69 in) long, and feet 8 mm (0.31 in) long; M. vivesi has greatly elongated hind feet, which average 23 mm (0.91 in) long. [7]

In common with other fish-eating bats, Myotis vivesi has long, efficient wings, with high aspect ratio and low wing loading, [8] and large feet with sharp claws. [9] The uropatagium (the wing surface between the hind legs) bears a fringe of silky hairs of unknown function; the uropatagium itself is used in hunting. [7]

The fur is around 8 mm (0.31 in) long, [7] and varies in colour from fawn to brown, with the base of each hair being dark grey. [5] In common with other piscivorous species of Myotis, the underside of M. vivesi is pale. [7]

Distribution

Myotis vivesi is found along the coast of the Gulf of California in the Mexican states of Sonora, Baja California and Baja California Sur, mostly on small islands. [1] A small population exists on the Pacific coast of the Baja California peninsula, between Isla Encantada and Punta Coyote. [7] Since it lives on small islands, the range of M. vivesi is naturally fragmented, but data from microsatellites and the mtDNA control region indicate that there is no isolation by distance in the species. [10]

Ecology and behaviour

Myotis vivesi feeds chiefly on marine fish [11] or crustaceans, [7] including the squat lobster Pleuroncodes planipes . [12] Only one other bat species, Noctilio leporinus , hunts in marine waters. [13] The guano produced by M. vivesi is red if it has eaten crustaceans, and black if it has eaten fish; green guano and brown guano result from feeding on algae and insects, respectively. [7] As well as fish and crustaceans, M. vivesi also feeds occasionally on aerial insects. [6] M. vivesi can cover large distances when hunting; in 1970, scientists saw "a group of about 400 M. vivesi around a boat at least 7 km [4.3 miles] from the shore". [14] M. vivesi inhabits an arid environment and has evolved the ability to concentrate its urine; this allows it to survive by drinking seawater. [11]

M. vivesi prefers to roost either in caves or under rocks revealed by landslides. [6] They sometimes share their roosts with least petrels (Halocyptena microsoma) and black petrels (Oceanodroma melania). [7] On many islands in the Gulf of California where these petrels nest, the western whiptail is a known predator of their eggs and chicks, and the petrels generally show only fearful responses towards the lizards and capable of doing only little to defend their offspring. However M. vivesi that share roosts with these petrels swiftly react by biting and flapping when the lizards are detected, effectively warding the reptiles off. This may be an example of a symbiotic relationship in which the bats help defend the young of nesting petrels, increasing the chances of survival for petrel chicks. [15]

Taxonomy and evolution

Myotis vivesi was first described by Auguste Ménégaux in 1901. The species was moved to a new genus, Pizonyx by Gerrit Smith Miller Jr. in 1906, [16] but that taxon is now usually included in Myotis . [17] Ménégaux gave no indication of the etymology of the specific name vivesi; it may either refer to a person called Vives, or derive from the Latin verb vivere , "to live". If Vives was a person, he was not the collector of the specimens, that being recorded as Léon Diguet. [3] No subspecies of M. vivesi have been recognised. [7]

The closest relatives of M. vivesi are other New World species of Myotis which are not adapted to piscivory, rather than the other piscivorous bats in the genus. [16] This indicates that the adaptations to catching fish in M. vivesi and other species are the result of convergent evolution. [16] No fossils attributable to M. vivesi have been discovered. [7] A fossil species of Pizonyx, Pizonyx wheeleri, was named by Walter Dalquest and Daniel Patrick in 1993 from the Miocene of Texas, [18] but according to a 1993 review by Nicholas Czaplewski, this species instead belongs to the genus Antrozous and may not even be distinct from the living species Antrozous pallidus . [19]

Related Research Articles

<span class="mw-page-title-main">Vespertilionidae</span> Family of microbats

Vespertilionidae is a family of microbats, of the order Chiroptera, flying, insect-eating mammals variously described as the common, vesper, or simple nosed bats. The vespertilionid family is the most diverse and widely distributed of bat families, specialised in many forms to occupy a range of habitats and ecological circumstances, and it is frequently observed or the subject of research. The facial features of the species are often simple, as they mainly rely on vocally emitted echolocation. The tails of the species are enclosed by the lower flight membranes between the legs. Over 300 species are distributed all over the world, on every continent except Antarctica. It owes its name to the genus Vespertilio, which takes its name from a word for bat, vespertilio, derived from the Latin term vesper meaning 'evening'; they are termed "evening bats" and were once referred to as "evening birds".

<span class="mw-page-title-main">Spectral bat</span> Species of bat

The spectral bat, also called the great false vampire bat, great spectral bat, American false vampire bat or Linnaeus's false vampire bat, is a large, carnivorous leaf-nosed bat found in Mexico, Central America, and South America. It is the only member of the genus Vampyrum; its closest living relative is the big-eared woolly bat. It is the largest bat species in the New World, as well as the largest carnivorous bat: its wingspan is 0.7–1.0 m (2.3–3.3 ft). It has a robust skull and teeth, with which it delivers a powerful bite to kill its prey. Birds are frequent prey items, though it may also consume rodents, insects, and other bats.

<span class="mw-page-title-main">Gray bat</span> Species of mammal

The gray bat is a species of microbat endemic to North America. It once flourished in caves all over the southeastern United States, but due to human disturbance, gray bat populations declined severely during the early and mid portion of the 20th century. 95% of gray bats now hibernate in only 15 caves. M. grisescens has been listed as federally endangered by the U.S. Fish and Wildlife Service since 1976, and is protected under the Endangered Species Act. Gray bat populations were estimated at approximately 2 million bats around the time they were placed on the Endangered Species list. By the early 1980s populations of gray bats dropped to 1.6 million. With conservation efforts in place, in 2004, gray bat populations were estimated to have reached 3.4 million.

<span class="mw-page-title-main">Mouse-eared bat</span> Genus of bats

The mouse-eared bats or myotises are a diverse and widespread genus (Myotis) of bats within the family Vespertilionidae. The noun "myotis" itself is a Neo-Latin construction, from the Greek "muós and "oûs", literally translating to "mouse-eared".

<span class="mw-page-title-main">Pallid bat</span> Species of bat

The pallid bat is a species of bat that ranges from western Canada to central Mexico. It is the sole species of its genus and is closely related to Van Gelder's bat, which is sometimes included in Antrozous. Although it has in the past been placed in its own subfamily (Antrozoinae) or even family (Antrozoidae), it is now considered part of the subfamily Vespertilioninae and the tribe Antrozoini.

<span class="mw-page-title-main">Least storm petrel</span> Species of bird

The least storm petrel is a small seabird of the storm petrel family Hydrobatidae. It is 13–15 cm in length, with a wingspan of 32 cm. It is the smallest member of the order Procellariiformes. It was formerly defined in the genus Oceanodroma before that genus was synonymized with Hydrobates.

<span class="mw-page-title-main">Black myotis</span> Species of bat

The black myotis is a vesper bat species from South and Central America.

<span class="mw-page-title-main">Southeastern myotis</span> Species of bat

The southeastern myotis is a small bat found throughout the Gulf Coastal Plain and the Lower Mississippi Alluvial Plain of the southeastern United States.

<span class="mw-page-title-main">Canyon bat</span> Species of bat

The canyon bat, also known as the western pipistrelle, or American parastrelle is a species of vesper bat. It is found in Mexico and in the western United States. The species has historically been placed in the genus Pipistrellus, but molecular evidence does not show any close relationship with that genus, and accordingly it was classified into its own genus, Parastrellus, in 2006.

<span class="mw-page-title-main">Findley's myotis</span> Species of bat

Findley's myotis is a species of vesper bat. It is found only on the Tres Marías Islands off the west coast of Mexico.

<span class="mw-page-title-main">Eastern small-footed myotis</span> Species of bat

The eastern small-footed bat is a species of vesper bat. It can be found in southern Ontario and Quebec in Canada and in mountainous portions of the eastern United States from New England to northern Georgia, and westward to northern Arkansas. It is among the smallest bats in eastern North America and is known for its small feet and black face-mask. Until recently, all North American small-footed Myotis were considered to be "Myotis leibii". The western population is now considered to be a separate species, Myotis ciliolabrum. The Eastern small-footed bat is rare throughout its range, although the species may be locally abundant where suitable habitat exists. Studies suggest white-nose syndrome has caused declines in their populations. However, most occurrences of this species have only been counted within the past decade or two and are not revisited regularly, making their population status difficult to assess. Additionally, most bat populations in the Eastern U.S. have been monitored using surveys conducted in caves and mines in the winter, but Eastern small-footed bats hibernate in places that make them unlikely to be encountered during these surveys. Perhaps as a result, the numbers of Eastern small-footed bats counted in winter tend to be low and they are relatively variable compared to other species of bats. Many biologists believe the species is stable, having declined little in recent times, but that it is vulnerable due to its relatively restricted geographic range and habitat needs.

<span class="mw-page-title-main">Yanbaru whiskered bat</span> Species of bat

The Yanbaru whiskered bat(Myotis yanbarensis) is a species of vesper bat in the genus Myotis.

<span class="mw-page-title-main">Yuma myotis</span> Species of bat

The Yuma myotis is a species of vesper bat native to western North America.

<span class="mw-page-title-main">California leaf-nosed bat</span> Species of bat

The California leaf-nosed bat is a species of bat in the family Phyllostomidae. It is found in Mexico and the United States. Its natural habitat is hot deserts.

<span class="mw-page-title-main">Bonin flying fox</span> Species of bat

The Bonin flying fox, Bonin fruit bat, or in Japanese Ogasawara giant bat is a species of flying fox in the family Pteropodidae. It is endemic to four islands in Ogasawara Islands, Japan. Its natural habitat is subtropical forests. It is threatened by habitat loss.

<span class="mw-page-title-main">Myotinae</span> Subfamily of bats

Myotinae is a subfamily of vesper bats. It contains three genera: Eudiscopus, Myotis, and Submyotodon. Before the description of Submyotodon and analysis of its phylogenetics, as well as a phylogenetic analysis of Eudiscopus, the only member of Myotinae was Myotis.

<span class="mw-page-title-main">Little brown bat</span> Species of mammal found in North America

The little brown bat or little brown myotis is an endangered species of mouse-eared microbat found in North America. It has a small body size and glossy brown fur. It is similar in appearance to several other mouse-eared bats, including the Indiana bat, northern long-eared bat, and Arizona myotis, to which it is closely related. Despite its name, the little brown bat is not closely related to the big brown bat, which belongs to a different genus.

<span class="mw-page-title-main">Antrozoini</span> Tribe of bats

Antrozoini is a tribe of bats in the subfamily Vespertilioninae of the family Vespertilionidae. It contains the pallid bat, Van Gelder's bat, the genus Rhogeessa, and the fossil Anzanycteris. All species in this tribe are found in the Americas.

<i>Myotis septentrionalis</i> Species of mammal

Myotis septentrionalis, known as the northern long-eared bat or northern myotis, is a species of bat native to North America. There are no recognized subspecies. The northern long-eared bat is about 3–3.7 inches in length, with a wingspan of 9–10 inches. It is distinguishable by its long ears when comparing it to other bats in its genus. This species is commonly found in the northern United States and Southern Canada east of British Columbia. The geographic range includes 37 states.

There are eighteen indigenous species of bats in Canada, which are found in many parts of the country. They are insectivores, and are prey to falcons, hawks, owls, snakes, cats, and raccoons.

References

  1. 1 2 Arroyo-Cabrales, J.; Ospina-Garces, S. (2016). "Myotis vivesi". IUCN Red List of Threatened Species . 2016: e.T14209A22069146. doi: 10.2305/IUCN.UK.2016-1.RLTS.T14209A22069146.en . Retrieved 16 November 2021.
  2. A. Ménégaux (1901). "Description d'une variété et d'une espèce nouvelle de Chiroptère rapporté du MExique par M. Diguet". Bulletin du Muséum National d'Histoire Naturelle . 1. 7: 321–327.
  3. 1 2 Bo Beolens; Michael Watkins & Michael Grayson (2009). "Vives". The Eponym Dictionary of Mammals. Johns Hopkins University Press. pp. 432–433. ISBN   978-0-8018-9304-9.
  4. "ITIS - Report: Myotis (Pizonyx)". www.itis.gov. Retrieved 2022-02-09.
  5. 1 2 E. Marquez (2000). "Myotis vivesi". Animal Diversity Web . University of Michigan . Retrieved February 17, 2011.
  6. 1 2 3 "Fish-eating myotis (Myotis vivesi)". ARKive. Archived from the original on 2011-02-27. Retrieved February 17, 2011.
  7. 1 2 3 4 5 6 7 8 9 10 11 12 Blood, B. R. & Clark, M. K. (1998). "Myotis vivesi". Mammalian Species (588): 1–5. doi: 10.2307/3504455 . JSTOR   3504455.
  8. John D. Altringham; Tom McOwat; Lucy Hammond (1998). "Flight". Bats: Biology and Behaviour. Oxford University Press. pp. 49–78. ISBN   978-0-19-850322-4.
  9. John D. Altringham; Tom McOwat & Lucy Hammond (1998). "The evolution and diversity of bats". Bats: Biology and Behaviour. Oxford University Press. pp. 5–48. ISBN   978-0-19-850322-4.
  10. Chris H. Floyd; José Juan Flores-Martínez; L. Gerardo Herrera M.; Omar Mejía & Bernie May (2010). "Conserving the endangered Mexican fishing bat (Myotis vivesi): genetic variation indicates extensive gene flow among islands in the Gulf of California". Conservation Genetics . 11 (3): 813–822. doi:10.1007/s10592-009-9902-4. S2CID   22078860.
  11. 1 2 Terry A. Vaughan; James M. Ryan; Nicholas J. Czaplewski (2010). "Water regulation". Mammalogy (5th ed.). Jones & Bartlett Learning. pp. 454–463. ISBN   978-0-7637-6299-5.
  12. William Lopez-Forment. "January 6, 2011. Isla Monserrat & Isla del Carmen". Daily Expedition Reports. Lindblad Expeditions & National Geographic. Archived from the original on 2011-07-10. Retrieved February 15, 2011.
  13. Dale W. Rice (2008). "Classification (overall)". In William F. Perrin; Bernd Wursig; J. G. M. Thewissen (eds.). Encyclopedia of Marine Mammals (2nd ed.). Academic Press. pp. 234–238. ISBN   978-0-12-373553-9.
  14. Ronald M. Nowak & Ernest Pillsbury Walker (1994). "Vespertilionidae". Walker's Bats of the World . Johns Hopkins University Press. pp.  184–229. ISBN   978-0-8018-4986-2.
  15. King, Joel (1978). "A Study of Symbiosis Involving the Fish-Eating Bat (Myotis vivesi), the Least Petrel (Halocyptera microsoma), the Black Petrel (Oceanodroma melania), and the Lizard (Cnemidophorus tigris)".{{cite journal}}: Cite journal requires |journal= (help)
  16. 1 2 3 B. Stadelmann; L. G. Herrera; J. Arroyo-Cabrales; J. J. Flores-Martínez; B. P. May & M. Ruedi (2004). "Molecular systematics of the fishing bat Myotis (Pizonyx) vivesi". Journal of Mammalogy . 85 (1): 133–139. doi: 10.1644/1545-1542(2004)085<0133:MSOTFB>2.0.CO;2 . JSTOR   1383987.
  17. Simmons, N.B. (2005). "Order Chiroptera". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 517–518. ISBN   978-0-8018-8221-0. OCLC   62265494.
  18. Walter W. Dalquest & Daniel B. Patrick (1989). "Small mammals from the Early and Medial Hemphillian of Texas, with descriptions of a new bat and gopher". Journal of Vertebrate Paleontology. 9 (1): 78–88. doi:10.1080/02724634.1989.10011740. JSTOR   4523239.
  19. Nicholas J. Czaplewski (1993). "Pizonyx wheeleri Dalquest and Patrick (Mammalia: Chiroptera) from the Miocene of Texas referred to the genus Antrozous H. Allen". Journal of Vertebrate Paleontology. 13 (3): 378–380. doi:10.1080/02724634.1993.10011519. JSTOR   4523521.