Christmas Island pipistrelle

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Christmas Island pipistrelle
Status iucn3.1 EX.svg
Extinct  (2009)  (IUCN 3.1) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Vespertilionidae
Genus: Pipistrellus
Species:
P. murrayi
Binomial name
Pipistrellus murrayi
(Andrews, 1900)
Synonyms

Pipistrellus tenuis murrayi

Location of Christmas Island in southeast Asia Christmas Island on globe (Southeast Asia centered) with borders.svg
Location of Christmas Island in southeast Asia

The Christmas Island pipistrelle (Pipistrellus murrayi) is an extinct species of vesper bat that was found only on Christmas Island, Australia. The last individual bat was seen in August 2009 with no further sightings despite intensive efforts to locate it. [1] [2] [3]

Contents

Taxonomy and etymology

It was described as a new species by British paleontologist Charles William Andrews, in a monograph published in 1900. Its species name "murrayi" was likely inspired by Sir John Murray, who helped pay for Andrews's expedition to the Christmas Island where he described it. [4]

It has sometimes been considered synonymous with Pipistrellus tenuis ; [5] [6] however, revisions of the genus based on baculum identified Pipistrellus murrayi as a distinct species. [7] [8] This was supported by genetic work conducted for the Australian Government as part of its investigation into the decline of Christmas Island ecology and the pipistrelle in mid-2009; the results of this analysis indicate that the Christmas Island Pipistrelle was closely related to but distinct from other Asian pipistrelles. [9]

Description

It was a small bat weighing around 3–4.5 g (0.11–0.16 oz). It had dark brown fur, [10] with the tips of its hairs yellowish. [4] Its forearm was 30–33 mm (1.2–1.3 in) long. It was the smallest described species of bat in Australia. [10] Its ears were triangular and rounded at the tips. Its uropatagium had a distinct calcar. Its tail protruded very slightly (2 mm (0.079 in)) past the uropatagium. The length of its head and body was 35–40 mm (1.4–1.6 in) long; its tail was 30–31 mm (1.2–1.2 in) long; its ear was 9–11 mm (0.35–0.43 in); its hind foot was 6–8 mm (0.24–0.31 in) long. [4]

Biology

This species fed on insects and roosted in tree hollows and decaying vegetation. [11] [12]

Decline and extinction

The Christmas Island pipistrelle declined dramatically from 1990. [13] It was once commonly seen throughout the island including in the settlement. [14]

A reassessment of the number of individuals remaining in January 2009 suggested there may have been as few as 20 individuals left. The only known communal roost contained only four individuals. Three years before, there had been 54 individuals in this colony and there were several other known, similar-sized colonies. Monitoring in early 2009 showed that some bats survived in the wild, prompting the Australian government to announce on 1 July 2009, that it would attempt to rescue the bat by bringing the last remaining individuals into captivity, with assistance of volunteer bat researchers from the Australasian Bat Society. [15] [16]

In early August 2009 Australian Government gave permission to capture the bats to establish a captive breeding program. However, after four weeks of surveying located only a single bat through its echolocation. Researchers were unable to catch it and the last echolocation call of this bat was recorded on 26 August 2009, when it went silent. On 8 September 2009, the Australian Government announced that attempts to capture the bats had failed. No Christmas Island pipistrelles have been seen or heard since, and it is believed the species is now extinct. [1] [17] [18] It is believed to be the first mammal extinction in Australia in 50 years. [19]

Cause of decline

The cause of the Christmas Island pipistrelle's decline is unknown. Several potential threats have been suggested: predation or disturbance at roost sites, and disease. [13] Introduced species such as the common wolf snake, giant centipede, [20] yellow crazy ant, black rat or feral cats have all been identified as potential suspects responsible for the decline either through predation or disturbance of the bats. It has also been speculated that an unidentified health threat, or poisoning from the insecticide Fipronil used to control yellow crazy ant 'supercolonies' could be responsible for the decline. [9] [13]

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".

<i>Pipistrellus</i> Genus of bats

Pipistrellus is a genus of bats in the family Vespertilionidae and subfamily Vespertilioninae. The name of the genus is derived from the Italian word pipistrello, meaning "bat".

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

The tricolored bat or American perimyotis is a species of microbat native to eastern North America. Formerly known as the eastern pipistrelle, based on the incorrect belief that it was closely related to European Pipistrellus species, the closest known relative of the tricolored bat is now recognized as the canyon bat. Its common name "tricolored bat" derives from the coloration of the hairs on its back, which have three distinct color bands. It is the smallest bat species in the eastern and midwestern US, with individuals weighing only 4.6–7.9 g (0.16–0.28 oz). This species mates in the fall before hibernation, though due to sperm storage, females do not become pregnant until the spring. Young are born helpless, though rapidly develop, flying and foraging for themselves by four weeks old. It has a relatively long lifespan, and can live nearly fifteen years.

<span class="mw-page-title-main">Common pipistrelle</span> Species of mammal

The common pipistrelle is a small pipistrelle microbat whose very large range extends across most of Europe, North Africa, South Asia, and may extend into Korea. It is one of the most common bat species in the British Isles. In Europe, the northernmost confirmed records are from southern Finland near 60°N.

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

The soprano pipistrelle is a small species of bat. It is found in Europe and often roosts on buildings.

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

The northern ghost bat is a bat species from South America, Trinidad, and Central America. It is a relatively rare, completely white, insectivorous bat, with an unusual sac at the base of its tail.

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

Savi's pipistrelle is a species of vesper bat found across North West Africa, the Mediterranean region and the Middle East. It feeds at night on flying insects. In the summer it roosts under bark, in holes in trees, in old buildings and in rock crevices but in winter it prefers roosts where the temperature is more even such as caves, underground vaults and deep rock cracks.

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

Nathusius' pipistrelle is a small bat in the genus Pipistrellus. It is very similar to the common pipistrelle and has been overlooked in many areas until recently but it is widely distributed across Europe. It was described by two German naturalists, Alexander Keyserling and Johann Heinrich Blasius, and named by them after Hermann von Nathusius, in gratitude for his support of their research.

The angulate pipistrelle, also known as the New Guinea pipistrelle, is a species of vesper bat found in Papua New Guinea and the Solomon Islands.

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

Endo's pipistrelle is a species of vesper bat that is endemic to Japan. It is found in temperate forests.

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

The little pied bat is a species of vesper bat in the family Vespertilionidae. It is found only in semi-arid woodlands in eastern Australia.

The western false pipistrelle, species Falsistrellus mackenziei, is a vespertilionid bat that occurs in Southwest Australia. The population is declining due to loss of its habitat, old growth in tall eucalypt forest which has largely been clear felled for tree plantations, wheat cultivation and urbanisation. Although it is one of the largest Australian bats of the family, the species was not recorded or described until the early 1960s. A darkly colored bat with reddish brown fur and prominent ears, they fly rapidly around the upper canopy of trees in pursuit of flying insects.

The southern forest bat is a vesper bat found in Australia.

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

The little forest bat is a species of vesper bat in the family Vespertilionidae. It is found only in south-eastern Australia, including Tasmania. It is a tiny bat often weighing less than 4 g (0.14 oz). It is sometimes referred to as Australia's smallest mammal, although the Northern or Koopmans Pipistrelle, Pipistrellus westralis, is possibly smaller, weighing on average around 3 g (0.11 oz). It is the smallest bat in Tasmania

<i>Pipistrellus raceyi</i> Species of bat from Madagascar

Pipistrellus raceyi, also known as Racey's pipistrelle, is a bat from Madagascar, in the genus Pipistrellus. Although unidentified species of Pipistrellus had been previously reported from Madagascar since the 1990s, P. raceyi was not formally named until 2006. It is apparently most closely related to the Asian species P. endoi, P. paterculus, and P. abramus, and its ancestors probably reached Madagascar from Asia. P. raceyi has been recorded at four sites, two in the eastern and two in the western lowlands. In the east, it is found in open areas and has been found roosting in a building; in the west it occurs in dry forest. Because of uncertainties about its ecology, it is listed as "Data Deficient" on the IUCN Red List.

<span class="mw-page-title-main">Isalo serotine</span> Species of bat in the genus Neoromicia

The Isalo serotine is a vesper bat of Madagascar in the genus Laephotis. It is known only from the vicinity of the Isalo National Park in the southwestern part of the island, where it has been caught in riverine habitats. After the first specimen was caught in 1967, it was described as a subspecies of Eptesicus somalicus in 1995. After four more specimens were collected in 2002 and 2003, it was recognized as a separate species. Because of its small distribution and the threat of habitat destruction, it is considered "vulnerable" in the IUCN Red List.

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

The cinnamon red bat is a species of bat in the family Vespertilionidae. It was first described from a specimen that had been collected in Chile. For more than one hundred years after its initial description, it was largely considered a synonym of the eastern red bat. From the 1980s onward, it was frequently recognized as distinct from the eastern red bat due to its fur coloration and differences in range. It has deep red fur, lacking white "frosting" on the tips of individual hairs seen in other members of Lasiurus. It has a forearm length of 39–42 mm (1.5–1.7 in) and a weight of 9.5–11.0 g (0.34–0.39 oz).

Lindy Lumsden is a principal research scientist with the Department of Environment, Land, Water and Planning, at the Arthur Rylah Institute for Environmental Research, in Melbourne, Australia.

The Alashanian pipistrelle is a species of bat in the family Vespertilionidae. It is found in China, South Korea, Mongolia, Japan, and Russia.

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Pipistrellini is a tribe of bats in the family Vespertilionidae. It contains several genera found throughout the Old World and Australasia, including the pipistrelles, noctules and related species.

References

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  2. Flannery, Tim (17 November 2012). "Unmourned death of a sole survivor". The Sydney Morning Herald - Environment. Fairfax. Retrieved 14 December 2012.
  3. "News at a glance". Science. 357 (6357). Christmas Island bat is officially no more. 22 September 2017. Bibcode:2017Sci...357.1216.. doi:10.1126/science.357.6357.1216.
  4. 1 2 3 Andrews, C. W. (1900). A Monograph of Christmas Island (Indian Ocean). Printed by order of the Trustees. pp.  26–28.
  5. Koopman, KF (1973). "Systematics of Indo-Australian pipistrelles". Periodicum Biologorum. 75: 113–116.
  6. Koopman, KF (1993). "Order Chiroptera". In Wilson, DE; Reeder, DM (eds.). Mammal Species of the World. A Taxonomic and Geographic Reference. Washington: Smithsonian Institution Press. pp. 137–241.
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  9. 1 2 Christmas Island Expert Working Group to Minister for the Environment, Heritage and the Arts (July 2009). Revised Interim Report (PDF).
  10. 1 2 Department of the Environment (2018). "Pipistrellus murrayi — Christmas Island Pipistrelle". environment.gov.au. Department of the Environment, Canberra. Retrieved 25 January 2018.
  11. Schulz, M; Lumsden, L (2004). National Recovery Plan for the Christmas Island Pipistrelle Pipistrellus murrayi. Department of Environment and Heritage. ISBN   978-0-642-55012-5.
  12. van Dyck, S.; Strahan, R, eds. (2008). The Mammals of Australia.
  13. 1 2 3 Lumsden, L; Schulz, M; Ashton, R; D, Middleton (2007). Investigation of threats to the Christmas Island Pipistrelle. A report to the Department of the Environment and Water Resources. Heidelberg, Victoria: Arthur Rylah Institute for Environmental Research, Department of Sustainability and Environment.
  14. Tidemann, C (1985). A study of the status, habitat requirements and management of the two species of bats on Christmas Island (Indian Ocean). Canberra: Australian National Parks and Wildlife Service.
  15. Galvin, Nick (16 February 2009). "Garrett goes in to bat for species on sticky wicket". The Sydney Morning Herald - Environment. Fairfax. Retrieved 14 December 2012.
  16. Garrett, Peter; Snowdon, Warren (1 July 2009). "Christmas Island Ecosystem Rescue" (PDF). Archived from the original (PDF) on 13 September 2009. Retrieved 28 July 2009.
  17. Kamenev, Marina (9 December 2009). "Should Wild Animals Become Pets to Ward Off Extinction?". Time. Archived from the original on 13 December 2009.
  18. Hance, Jeremy (23 May 2012). "Island bat goes extinct after Australian officials hesitate". Mongabay.
  19. Martin, T. G.; Nally, S.; Burbidge, A. A.; Arnall, S.; Garnett, S. T.; Hayward, M. W.; Possingham, H. P. (2012). "Acting fast helps avoid extinction". Conservation Letters. 4 (5): 274–280. Bibcode:2012ConL....5..274M. doi: 10.1111/j.1755-263X.2012.00239.x . S2CID   85987070.
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