Spectacled flying fox

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Spectacled flying fox
Pteropus conspicillatus family.jpg
Male, female, and their young
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Pteropodidae
Genus: Pteropus
Species:
P. conspicillatus
Binomial name
Pteropus conspicillatus
Gould, 1850
Spectacled Flying-fox.png
Distribution of the spectacled flying fox

The spectacled flying fox (Pteropus conspicillatus), 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.

Contents

The spectacled flying fox was listed as a threatened species under the Environment Protection and Biodiversity Conservation Act 1999. They were considered vulnerable due to a significant decline in numbers as a result of loss of their prime feeding habitat and secluded camp sites. It has also been reported that spectacled flying foxes skim over the surface of water to drink and are sometimes eaten by crocodiles. [3] The species was classified as endangered by the IUCN in 2020. [1]

In February 2019, the Australian government upgraded the threatened status from vulnerable to endangered, after almost a third of the bat population died in a severe heatwave in Queensland in late 2018. [4]

Description

Spectacled flying fox CSIRO ScienceImage 3220 Spectacled flying fox.jpg
Spectacled flying fox

The head and body length is 22–25 cm, forearm 16–18 cm, weight 400–1000 g. A large spectacled flying fox has pale yellow or straw-colored fur around its eyes. The mantle is pale yellow and goes across the back, neck, and shoulders. Some have pale yellow fur on the face and top of the head.

Habitat

Spectacled flying foxes are forest dwellers and rainforests are their preferred habitat. They prefer to roost in the middle and upper canopy strata in the full sun. Colonies of the spectacled flying fox can be found in rain forests, mangroves, and paperbark and eucalypt forests. [3] There is evidence of increasing urbanisation. [5]

Diet

The spectacled flying fox's natural diet is rainforest fruits, riparian zone flowers, and flowers from Myrtaceae (primarily Eucalyptus and Syzygium species) and fruits from the Moraceae (figs) and Myrtaceae (primarily Syzygium). [6] [7]

Life cycle

Spectacled flying foxes have one pup annually. Females are capable of breeding at one year of age. [8] Males probably do not breed until three to four years of age. They are polygamous (similar to the grey-headed flying fox, Pteropus poliocephalus). Female to male ratio may be as high as 2:1. [8] Conception occurs April to May. Sexual activity is continuous from about January to June. Females give birth to one young per year in October to December. Juveniles are nursed for over five months, and on weaning, congregate in nursery trees in the colony. The juveniles fly out for increasing distances with the colony at night and are 'parked' in nursery trees, often kilometres distant from the colony, and are brought back to the colony in the morning. [9]

Life expectancy

Spectacled flying foxes typically live to be around 12 to 15 years old, but in captivity can exceed 30 years of age. Natural causes of mortality include predation mainly by rufous owls, Freshwater crocodiles, and olive pythons, death by paralysis tick when bats climb low to the ground to feed, and the death of babies that are born too early when either something goes wrong in the fetus' development, or the mother suffers from prolonged stress. Flying foxes are also frequently killed in human-related incidents such as landing on power lines, and getting entangled in nets or barbed wire. [10] [11] Most wild flying foxes are assumed to live much shorter lives. [8]

Conservancy

In 2012, the Queensland Government reintroduced the issuing of permits which allows farmers and fruit-growers (with permits)to kill limited numbers of flying foxes in order to protect crops. [12] [13] The shooting of bats had been banned by the previous Qld Labor government after advice from the Qld Animal Welfare Advisory Committee (AWAC) that the practice was inhumane.

In February 2019, the Australian Department of the Environment and Energy announced that the national status of the spectacled flying fox was going to be revised from vulnerable to endangered. This was in response to heat waves in the 2018-19 summer that resulted in mass die-offs of the species, resulting in the deaths of over 20,000 individuals. It is estimated that a third of its total population was lost during the extreme heat waves. Humane Society International had nominated the species for an endangered listing some years earlier. [4] [14]

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.

<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">Little red flying fox</span> Species of bat

The little red flying-fox is a megachiropteran bat native to northern and eastern Australia. The species weighs about half a kilogram, one US pound, and is the smallest species of Pteropus in mainland Australia. P. scapulatus occurs at the coast and further inland, camping and flying to the tropical to temperate regions that provide them with an annual source of nectar. They exhibit an unusual method of obtaining drinking water during dry periods, skimming a stream's surface to gather it onto their fur while they are in flight.

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

The grey-headed flying fox is a megabat native to Australia. The species shares mainland Australia with three other members of the genus Pteropus: the little red P. scapulatus, spectacled P. conspicillatus, and the black P. alecto. The grey-headed flying fox is the largest bat in Australia.

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

The Mauritian flying fox, also known as Greater Mascarene flying fox or Mauritius fruit bat is a large megabat species endemic to Mauritius and La Réunion.

<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.

Pteropus brunneus is an extinct species of flying fox in the family Pteropodidae. It was said to be found at Percy Island, southeast of Mackay, Queensland, off the northeast coast of Australia.

<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">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.

<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">Madagascan flying fox</span> Species of bat

The Madagascan flying fox, Madagascar flying-fox, or Madagascar fruit bat is a species of megabat in the genus Pteropus. It is endemic to Madagascar. Its natural habitats are diverse, and include moist lowland forests, dry forests, succulent woodlands, and spiny thickets, and mangroves. It eats figs and other fruits, flowers, and leaves. It is threatened by habitat loss.

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

The large flying fox, also known as the greater flying fox, Malayan flying fox, Malaysian flying fox, large fruit bat, kalang, or kalong, is a southeast Asian species of megabat in the family Pteropodidae. Despite its scientific name, it feeds exclusively on fruits, nectar, and flowers, like the other flying foxes of the genus Pteropus. It is noted for being one of the largest bats. As with nearly all other Old World fruit bats, it lacks the ability to echolocate but compensates for it with well-developed eyesight.

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

The Pemba flying fox is a species of flying fox in the family Pteropodidae. It is endemic to the island of Pemba on the coast of Tanzania.

<span class="mw-page-title-main">Australian flying fox die-offs</span> Flying foxes dying during extreme heat events

In the last two decades tens of thousands of Australian flying foxes have died during extreme heat events. Flying fox die-offs feature arguably among the most dramatic mass mortality events witnessed in nature, but they can be indicators of heat stress in more cryptic fauna where impacts are more difficult to assess. The die-offs are important additional threats to Australian flying-foxes and the ecosystem services they provide, and highlight the complex implications of climate change for behaviour, demography, and species survival.

<span class="mw-page-title-main">Lubee Bat Conservancy</span> Non-profit organization in Florida, U.S.

Lubee Bat Conservancy is a nonprofit organization in Gainesville, Florida. The organization was founded in 1989 by Luis F. Bacardi as a center for the research, conservation, and breeding of endangered animals; it later narrowed its focus solely to bats, particularly megabats.

<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.

References

  1. 1 2 Roberts, B.; Eby, P.; Westcott, D. (2020). "Pteropus conspicillatus". IUCN Red List of Threatened Species . 2020: e.T18721A22080456. doi: 10.2305/IUCN.UK.2020-3.RLTS.T18721A22080456.en . Retrieved 19 November 2021.
  2. "Species Profile and Threats Database: Pteropus conspicillatus — Spectacled Flying-fox".
  3. 1 2 "Spectacled Flying-fox". Australian Museum. 2010. Retrieved January 12, 2013.
  4. 1 2 Cox, Lisa (19 February 2019). "Spectacled flying fox declared endangered after Queensland heatwave wipeout". The Guardian. Retrieved 20 February 2019.
  5. Tait, Jessica; Perotto-Baldivieso, Humberto L.; McKeown, Adam; Westcott, David A. (2014). "Are Flying-Foxes Coming to Town? Urbanisation of the Spectacled Flying-Fox (Pteropus conspicillatus) in Australia". PLOS ONE. 9 (10): e109810. Bibcode:2014PLoSO...9j9810T. doi: 10.1371/journal.pone.0109810 . PMC   4190360 . PMID   25295724.
  6. Australian Museum Business Services (2004). The Provision of Data for Draft National Fauna Survey Standards: Bats Draft Report to the Commonwealth Department of Environment and Heritage.
  7. Richards, G.C. (1987). "Aspects of the Ecology of Spectacled Flying-foxes, Pteropus conspicillatus (Chiroptera: Pteropodidae) in Tropical Queensland". Australian Mammalogy. 10 (2): 87–88. doi:10.1071/AM87017. S2CID   254712384.
  8. 1 2 3 Garnett, S.T.; Whybird, O.A.; Spencer, H.G. (1999). "Conservation status of the Spectacled Flying-fox Pteropus conspicillatus". Australian Zoologist. 31: 38–54. doi:10.7882/az.1999.006.
  9. Richards, GC & Spencer, HJ (1998). "Spectacled Flying-fox, Pteropus conspicillatus (Gould, 1850)". In: Strahan, R, ed. The Mammals of Australia.
  10. Hall, L.S. (1995). "Bare-backed Fruit-bat Dobsonia moluccensis", pp. 430–431 in Strahan, R, ed. The Mammals of Australia. Chatswood, NSW: Reed Books.
  11. Flannery, T.F. (1995). The mammals of New Guinea. Revised and updated edition. Chatswood, N.S.W: Reed Books
  12. Michael, Peter (16 December 2012). "Queensland farmers approved for lethal Damage Mitigation Permits to shoot and kill flying foxes". The Courier-Mail . Brisbane. Retrieved 3 September 2017.
  13. "Damage mitigation permits for crop protection". Department of Environment and Heritage Protection. Queensland Government. 13 April 2017. Retrieved 3 September 2017.
  14. "23,000 dead: HSI calls for urgent spectacled flying-fox endangered listing". Humane Society International. 19 December 2018. Retrieved 26 February 2021.

Further reading