Mariana fruit bat

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Mariana fruit bat
Mariana Fruit Bat.jpg
CITES Appendix I (CITES) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Pteropodidae
Genus: Pteropus
Species:
P. mariannus
Binomial name
Pteropus mariannus
Desmarest, 1822
Mariana Fruit Bat area.png
Mariana fruit bat range
Synonyms

Pteropus keraudrenQuoy & Gaimard, 1824

The Mariana fruit bat (Pteropus mariannus), also known as the Mariana flying fox, and the fanihi in Chamorro, is a megabat found only in the Mariana Islands and Ulithi (an atoll in the Caroline Islands). [3] Habitat loss has driven it to endangered status, and it is listed as threatened by the US Fish and Wildlife Service. Poaching, habitat loss, and the introduction of invasive species have contributed to the species' decline.

Contents

Description

The Mariana fruit bat is a mid-sized bat which weighs 0.6 to 1.1 lb (270 to 500 g), and has a forearm length of 5.3 to 6.1 in (13.4 to 15.6 cm). Males of the species are slightly larger in size than the females. Their abdomens are colored from black to brown, while also having gray hairs. The mantle and the neck are a brighter brown to golden brown color and the head varies from brown to black. Their ears are rounded and their eyes large, giving them the features of a canid, so many megabats are called flying foxes. [4]

Threats

The bat is considered a culinary delicacy by Chamorros. Eating fruit bats is linked to a neurological disease called lytico-bodig disease. Paul Alan Cox from the Hawaiian National Tropical Botanical Garden in Kalaheo, and Oliver Sacks from Albert Einstein College in New York, found the bats consumed large quantities of cycad seeds, and - like some eagles, which were shown to build up levels of the pesticide DDT in fat tissue - probably accumulate the toxins to dangerous levels. [5]

Conservation

The Mariana Fruit Bat was first proposed for review by the U.S. Fish and Wildlife Service in May 1979. [6] In 1983, the species was listed as an endangered species by the USFWS. [7] The draft of the recovery plan for the Mariana Fruit Bat was sent for review in 2010. [8]

In 2001, the population was estimated to number between 300 and 400 bats on Sarigan. [9] The current population numbers are unknown, but one known concentration is on Ritidian Point in Guam. [10] In 2013, Bat Conservation International listed this species as one of the 35 species of its worldwide priority list of conservation. [11]

Behavior

Johnson and Wiles described roosting behavior: "Sarigan's population differs from those of larger islands in the archipelago by usually having smaller roost sizes, typically 3–75 bats, and large numbers of solitary bats that at times comprise up to half of the population. Colonies and smaller aggregations were composed primarily of harems with multiple females, whereas a nearly equal sex ratio occurred among solitary animals." [9]

Subspecies

Pteropus mariannus has three subspecies: [3]

See also

Related Research Articles

<span class="mw-page-title-main">Megabat</span> Family of fruit bats

Megabats constitute the family Pteropodidae of the order Chiroptera (bats). They are also called fruit bats, Old World fruit bats, or—especially the genera Acerodon and Pteropus—flying foxes. They are the only member of the superfamily Pteropodoidea, which is one of two superfamilies in the suborder Yinpterochiroptera. Internal divisions of Pteropodidae have varied since subfamilies were first proposed in 1917. From three subfamilies in the 1917 classification, six are now recognized, along with various tribes. As of 2018, 197 species of megabat had been described.

<span class="mw-page-title-main">Giant golden-crowned flying fox</span> Large bat species

The giant golden-crowned flying fox, also known as the golden-capped fruit bat, is a species of megabat endemic to the Philippines. Since its description in 1831, three subspecies of the giant golden-crowned flying fox have been recognized, one of which is extinct. The extinct subspecies was formerly recognized as a full species, the Panay golden-crowned flying fox. Formerly, this species was placed in the genus Pteropus; while it is no longer within the genus, it has many physical similarities to Pteropus megabats. It is one of the largest bat species in the world, weighing up to 1.4 kg (3.1 lb)—only the Indian and great flying fox can weigh more. It has the longest documented forearm length of any bat species at 21 cm (8.3 in).

<span class="mw-page-title-main">Guam flying fox</span> Extinct species of bat

The Guam flying fox, also known as the little Marianas fruit bat, was a small megabat from Guam in the Marianas Islands in Micronesia that was confirmed extinct due to hunting or habitat changes. It was first recorded in 1931 and was observed roosting with the larger and much more common Mariana fruit bat. The last specimen was a female found roosting at Tarague cliff in March 1967, but it escaped capture. An unconfirmed sighting took place sometime during the 1970s, and no other individuals have been sighted since then.

<i>Pteropus</i> Genus of large bats

Pteropus is a genus of megabats which are among the largest bats in the world. They are commonly known as fruit bats or flying foxes, among other colloquial names. They live in South Asia, Southeast Asia, Australia, East Africa, and some oceanic islands in the Indian and Pacific Oceans. There are at least 60 extant species in the genus.

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

The spectacled flying fox, also known as the spectacled fruit bat, is a megabat that lives in Australia's north-eastern regions of Queensland. It is also found in New Guinea and on the offshore islands including Woodlark Island, Alcester Island, Kiriwina, and Halmahera.

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

The black flying fox or black fruit bat is a bat in the family Pteropodidae. It is among the largest bats in the world, but is considerably smaller than the largest species in its genus, Pteropus. The black flying fox is native to Australia, Papua New Guinea, and Indonesia. It is not a threatened species.

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

Livingstone's fruit bat, also called the Comoro flying fox, is a megabat in the genus Pteropus. It is an Old World fruit bat found only in the Anjouan and Mohéli islands in the Union of the Comoros in the western Indian Ocean.

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

The Hawaiian hoary bat, also known as ʻōpeʻapeʻa, is a species of bat endemic to the islands of Hawaiʻi. The Hawaiian hoary bat occupies the major Hawaiʻian islands, making it the only extant and native terrestrial mammal in the islands. Some studies report that the mainland hoary bat lives in sympatry on the Hawaiian Islands alongside the Hawaiian hoary bat, although this is disputed. The Hawaiian hoary bat was officially named the state land mammal of Hawaiʻi in 2015. It is a federally listed endangered taxon of the United States.

<span class="mw-page-title-main">Black-bearded flying fox</span> Species of mammal

The black-bearded flying fox is an endangered species of megabat in the genus Pteropus. It is endemic to Indonesia, found on the islands of Ambon, Buru, Seram, Banda, and Yamdena. Currently considered monotypic, it formerly included the Aru flying fox and Kei flying fox as subspecies.

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

The black-eared flying fox, species Pteropus melanotus, is a bat of the family Pteropodidae (megabats). Also known as Blyth's flying fox, it is found on the Andaman Islands and Nicobar Islands (India), and in Sumatra (Indonesia). A population on Christmas Island, which is critically endangered, has been placed as a subspecies of this population. The conservation and taxonomic status of that population was later re-established as a distinct species, the Christmas Island fruit-bat Pteropus natalis.

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

The great flying fox, also known as the greater flying fox or Bismarck flying fox, is a species of megabat in the genus Pteropus, found throughout lowland areas of New Guinea and in the Bismarck Archipelago. Conflicting evidence suggests that its closest relative is either the spectacled flying fox or, jointly, the Pelew and insular flying foxes. Two subspecies are recognized. At up to 1.6 kg (3.5 lb) in weight, it is among the heaviest bats in the world and the largest bat in Melanesia. It is a gregarious animal which roosts with hundreds or thousands of individuals. In part due to its wide variation in color, it has many taxonomic synonyms, including Pteropus degener, Pteropus papuanus, and Pteropus sepikensis. It may forage during the day or night in search of fruit, including figs or fruits from the family Sapotaceae. It is considered a least-concern species by the IUCN, though its numbers have been negatively impacted by what appeared to be a disease, as well as by hunting for bushmeat that occurs across its range.

<i>Pteropus pelagicus</i> Species of bat

Pteropus pelagicus is a species of fruit bat in the family Pteropodidae. It includes two subspecies that were formerly recognized as full species— Pteropus insularis and Pteropus phaeocephalus. It is endemic to Micronesia. It is threatened by habitat loss.

<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">Fat Guam partula</span> Species of gastropod

The fat Guam partula or humped tree snail, scientific name Partula gibba, is an endangered species of air-breathing land snail, a terrestrial gastropod mollusk in the family Partulidae.

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

The Bougainville monkey-faced bat or Bougainville flying monkey is a megabat endemic to Bougainville Island of Papua New Guinea and Choiseul Island of the Solomon Islands in Melanesia. It inhabits mature forests in upland areas, within the Autonomous Region of Bougainville and Bougouriba Province.

<span class="mw-page-title-main">Guam National Wildlife Refuge</span> Wildlife conservation area in Guam

The Guam National Wildlife Refuge is composed of three units: the Andersen Air Force Base Overlay Unit, the Navy Overlay Unit, and the Ritidian Unit. The Ritidian Unit, known to the native CHamoru people as Puntan Litekyan, is located on the northern tip of Guam and encompasses approximately 1,217 acres, including 385 terrestrial acres and 832 acres of submerged areas offshore.

<span class="mw-page-title-main">Bat as food</span> Bat eaten as food

Bats as food are eaten by people in parts of some North American, Asian, African, Pacific Rim countries, and cultures, including the United States, China, Vietnam, Seychelles, the Philippines, Indonesia, Palau, Thailand, and Guam. Half the megabat species are hunted for food but only eight percent of the insectivorous bat species are. In Guam, Mariana fruit bats are considered a delicacy.

<span class="mw-page-title-main">Christmas Island flying fox</span> Species of mammal (bat)

The Christmas Island flying fox or Christmas Island fruit bat, as the name suggests, is a flying fox endemic to Christmas Island. It is unclear if it should be considered a distinct species, or a subspecies of the black-eared flying fox. It may descend from a population of island flying foxes from Pulau Panjang near Java.

<span class="mw-page-title-main">Marianas tropical dry forests</span> Tropical dry broadleaf forests ecoregion of the Mariana Islands

The Marianas tropical dry forests is a tropical and subtropical dry broadleaf forests ecoregion on the Marianas Islands in the western Pacific Ocean.

References

  1. Mildenstein, T. (2020). "Pteropus mariannus". IUCN Red List of Threatened Species . 2020: e.T188566753A22083400. doi: 10.2305/IUCN.UK.2020-3.RLTS.T188566753A22083400.en . Retrieved 19 November 2021.
  2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. 1 2 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. p. 340. ISBN   978-0-8018-8221-0. OCLC   62265494.
  4. "Mariana fruit Bat (=Mariana flying fox) (Pteropus mariannus mariannus)" Archived 2009-02-26 at the Wayback Machine , U.S. Fish & Wildlife Service Environmental Conservation Online System
  5. "Bat-Eating Linked to Neurological Illness", National Geographic , June 13, 2003
  6. "Review of the Status of Ten Birds and Two Mammals from Guam" (PDF). Federal Register. 44 (98): 29023–29428. May 18, 1979. Retrieved 17 October 2023.
  7. Federal Reserve(PDF). 47 (251): 58454. December 30, 1982 https://www.fws.gov/sites/default/files/federal_register_document/FR-1982-12-30.pdf . Retrieved 17 October 2023.{{cite journal}}: Missing or empty |title= (help)
  8. Federal Reserve(PDF). 75 (80): 15721. March 30, 2010 https://www.fws.gov/sites/default/files/federal_register_document/2010-7058.pdf . Retrieved 17 October 2023.{{cite journal}}: Missing or empty |title= (help)
  9. 1 2 Johnson, Nathan C.; Wiles, Gary J. (October 2004). "Population size and natural history of Mariana fruit bats (Chiroptera: Pteropodidae) on Sarigan, Mariana Islands" (PDF). Pacific Science . Honolulu: University of Hawaii Press. 58 (4): 585. doi:10.1353/psc.2004.0044. hdl: 10125/2744 . S2CID   84109386.
  10. Maxfield, Barbara (2009-07-22). "Guam National Wildlife Refuge Draft Comprehensive Conservation Plan Released for Public Review and Comment" (PDF). US Fish and Wildlife Service. Archived from the original (PDF) on 2012-07-19. Retrieved 2012-02-21.{{cite journal}}: Cite journal requires |journal= (help)
  11. "Annual Report 2013-2014" (PDF). batcon.org. Bat Conservation International. August 2014. Archived from the original (PDF) on July 7, 2017. Retrieved May 1, 2017.