Insular flying fox | |
---|---|
In Taveuni, Fiji | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Chiroptera |
Family: | Pteropodidae |
Genus: | Pteropus |
Species: | P. tonganus |
Binomial name | |
Pteropus tonganus Quoy & Gaimard, 1830 | |
Insular flying fox range |
The insular flying fox or Pacific flying fox (Pteropus tonganus) is a species of flying fox in the family Pteropodidae. It is geographically widespread, the most widespread flying fox in the Pacific: it is found in American Samoa, the Cook Islands, Fiji, New Caledonia, Niue, Papua New Guinea, Samoa (where it is called pe'a fanua, pe'a fai and taulaga), the Solomon Islands, Tonga, and Vanuatu. [1]
Archaeologists on an excavation site at Rurutu announced in 2006 some important fossil finds:
Five bones, representing one adult of the Pacific Flying Fox, Pteropus tonganus, were recovered from an archaeological site on Rurutu (151[degrees] 210 W, 22[degrees] 270'S), Austral Islands, French Polynesia, making this the most eastern extension of the species. For the first time, flying fox bones from cultural deposits were directly dated by accelerator mass spectrometry, yielding an age of death between A.D. 1064 and 1155. Their stratigraphic position in an Archaic period archaeological site and the absence of bones in the late prehistoric to historic layers point to extirpation of the species. No flying fox bones were found in prehuman deposits and human transport of the species cannot be ruled out. [3]
The range of coloration in this bat species varies somewhat. Its back is described as black or seal brown; its mantle has been called orange, yellow, cream buff, and tawny. [4] This bat lacks an interfemoral membrane; its forearms and tibia are bare, and the fur of the males is described as "stiff, short, oily hairs". [4]
In flight, their outstretched wings appear a translucent dark brown when viewed from below. [5]
The insular flying fox has a widespread distribution in Polynesia. Its range includes Papua New Guinea, the Solomon Islands, Samoa, Tonga, the Cook Islands, Tuvalu, Tokelau, Niue, Vanuatu, New Caledonia, Fiji, Wallis and Futuna. It sometimes migrates between islands and its typical habitat is tropical wet forests, mangrove forests and plantations. [6]
Like most species of bat, this flying fox is nocturnal and roosts in colonies high in the canopy. These bats favor lowland native forests, cliffs, islets, and swampy areas. The females give birth to a single offspring each year although occasionally twins are born. [6]
Insular flying foxes are frugivores and eat pollen and nectar. They are important pollinators of Ceiba pentandra and perhaps other species. [4]
The IUCN rates the insular flying fox as being of "Least Concern" because it has a wide range and presumed large population. It is hunted for food on some islands and it is also threatened by degradation of native forest for logging and for conversion to plantations and cultivated land. Populations appear to be declining but not at such a rate as to warrant placing the bat in a more threatened category. [6]
Bats are well known as natural hosts and possibly reservoirs of a large diversity of both RNA and DNA viruses, of which some are responsible for emerging infections and disease outbreaks. Faecal matter from four roosting sites of insular flying foxes in Tonga was sampled for viruses during 2014–2015. Analysis of the recovered DNA sequences revealed 48 single-stranded DNA viruses, including 5 cyclovirus and 14 gemycircularvirus novel species. Three of the viruses were sampled in consecutive years and six were found at multiple sites indicating that they are persistently associated with insular flying fox colonies. [7]
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.
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.
The Vanuatu flying fox or white flying fox is a species of flying fox in the family Pteropodidae. It is endemic to Vanuatu. It is most closely related to the Samoa flying fox.
The Banks flying fox is a species of megabat in the family Pteropodidae. It is endemic to Vanuatu. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical swamps. These small fruit bats are about 15 cm. long with grey and brown on its head and back with a yellow-orange neck and yellow-gray bellies. Its diet consists of coconut flowers and Vaveli trees fruit since its home is tropical.
The white-winged flying fox, also known as the mottle-winged flying fox is a species of bat in the family Pteropodidae. They are endemic to the Philippines. Their natural habitats are subtropical and tropical dry forests. In 2008, Giannini et al. revived the genus Desmalopex and placed D. leucoptera in it.
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.
The Temotu flying fox is a species of flying fox in the family Pteropodidae. It is endemic to the Solomon Islands. It is threatened by habitat destruction due to subsistence agricultural practices, as well as natural disasters such as tropical cyclones. Due to its imperiled status, it is identified by the Alliance for Zero Extinction as a species in danger of imminent extinction. In 2013, Bat Conservation International listed this species as one of the 35 species of its worldwide priority list of conservation.
The Ceram fruit bat or Seram flying fox is a species of megabat in the family Pteropodidae. It is endemic to the mountainous forests of two Maluku islands, Buru and Seram, including the Manusela National Park on Seram. They were once present on the nearby Ambon Island, but probably not anymore. The habitat has an area of less than 20,000 km2, and is decreasing due to logging. For this reason, and because of hunting by the local population, these species are listed as vulnerable by the IUCN since 1996.
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.
The Samoa flying fox or Samoan flying fox is a species of flying fox in the family Pteropodidae. It is found in American Samoa, Fiji, and Samoa. Its natural habitat is subtropical or tropical dry forests.
The Vanikoro flying fox, also known locally as the basapine, is a species of bat in the family Pteropodidae. It has only been found in the Vanikoro island group located in the southern Solomon Islands. The species as a whole was originally known from just a few specimens collected sometime before 1930 but following surveys conducted on the island in the early 1990s did not detect this species again causing the Vanikoro flying fox to be listed as extinct. However, the species was rediscovered by a survey conducted in late 2014 which indicated a population in the high hundreds or low thousands and reported all observations.
The dwarf flying fox, least flying fox, or least fruit bat is a species of flying fox in the family Pteropodidae. It is endemic to the Solomon Islands. It is threatened by deforestation, which is believed to damage roosting sites in old growth forests.
The big-eared flying fox is a species of bat in the family Pteropodidae, larger bats who subsist largely on fruits. The species is distributed across a range in Indonesia, Papua New Guinea and islands nearing the Cape York Peninsula at the northeast of Australia, at elevations less than 500 metres and often in coastal mangroves.
Robert Bollt was an American archaeologist, specializing in Pacific Archaeology.
The large Samoan flying fox is a species of fruit-eating megabat whose type specimen was originally collected in Samoa in 1856, but was not identified as a new species until 2009. The only known specimen was collected by an American expedition to Samoa in 1838–1842. It was rediscovered by Smithsonian mammalogist Kristofer Helgen preserved in alcohol. It was the largest known bat from Polynesia. As the type specimen is dead, and no other examples of the species are known, it is believed to be extinct.