Saccolaimus saccolaimus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Chiroptera Emballonuridae

Scientific Name: Saccolaimus saccolaimus
Species Authority: (Temminck, 1838)
Common Name(s):
English Bare-rumped Sheathtail-bat, Naked-rumped Pouched Bat, Pouch-bearing Bat, Pouched Bat
Saccolaimus affinis Dobson, 1875
Saccolaimus crassus Blyth, 1844
Saccolaimus nudicluniatus De Vis, 1905
Saccolaimus pluto Miller, 1910
Taxonomic Notes: Bates and Harrison (1997) consider the nominate subspecies of the taxon to represent forms from the South Asian region and treat all other names as synonyms. Simmons (2005) recognizes S. s. crassus Blyth, 1844 as a valid subspecies. The Philippine populations were formerly considered to be a distinct species, Saccolaimus pluto (Corbet and Hill 1992, Heaney et al. 1991, Koopman 1993), but are now retained as a subspecies (Heaney et al. 1998). There is a need for studies of geographic variation across the species' range (L. Heaney and K. Helgen pers. comm. 2006). The northeastern Australian populations are described as the subspecies S. s. nudicluniatus, although it is not clear whether this should be applied to the Northern Territory population (Duncan et al. 1999).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Csorba, G., Bumrungsri, S., Francis, C., Helgen, Bates, P., Heaney, L., Balete, D. & Thomson, B.
Reviewer(s): Hutson, A.M., Racey, P.A. (Chiroptera Red List Authority) & Cox, N. (Global Mammal Assessment Team)
Listed as Least Concern in view of its wide distribution, presumed large population, it occurs in a number of protected areas, has a tolerance of a degree of habitat modification, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This widespread species ranges from South Asia, through parts of continental and insular Southeast Asia, Melanesia and Australia. In South Asia, this species is presently known from Bangladesh (Sylhet division) (Sarker and Sarker 2005; Srinivasulu and Srinivasulu 2005), India (Andaman and Nicobar Islands, Gujarat, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Meghalaya, Orissa, Uttar Pradesh and West Bengal) and Sri Lanka (North Central, Uva and Western provinces) (Molur et al. 2002; Srinivasulu et al. in press). In South Asia, it has been recorded from sea level to 1,200 m asl (Molur et al. 2002). It has been recorded from continental Southeast Asia, in Myanmar, southern Thailand, Cambodia (known only from a collection in Phnom Phen [G. Csorba pers. comm.]), southwestern Viet Nam, Peninsular Malaysia and possibly Singapore. Within insular Southeast Asia, the species has been recorded from the islands of Sumatra and Java (Indonesia), Borneo (Indonesia and Malaysia only), Sulawesi (Indonesia), the island of Timor (East Timor and Indonesia), Halmahera (Indonesia), the Talaud Islands (Indonesia) and Ternate Island (Indonesia), and the Philippines. In the Philippines it has been the species has been recorded from sea level to 800 m asl (Heaney et al. 1998) from Catanduanes, Luzon and Mindoro (Corbet and Hill 1992) Mindanao (Misamis Oriental, Zamboanga del Sur provinces), and Negros (Heaney et al. 1998) although it is likely to occur throughout the country except for the Batanes/Babuyan region (L. Heaney pers. comm. 2006). It has been recorded from scattered localities on the island of New Guinea (Indonesia and Papua New Guinea), on Yapen Island (Papua Province, Indonesia), on the Bismarck Archipelago and the Trobriand Islands (Papua New Guinea), on Bougainville Island (Papua New Guinea). It has also been recorded from the island of Guadacanal in the Solomon Islands and from coastal northern and northeastern Australia (Queensland and Northern Territory) (Corbet and Hill 1992; Flannery 1995; Strahan 1995; Bonaccorso 1998). In the Northern Territory of Australia, there have been relatively few records, with the only confirmed records from the Kakadu lowlands (Woinarski and Milne 2005). This is partly due to the lack of a diagnostic call that can be assigned to the species and can be used for its detection (Woinarkski and Milne 2005).
Countries occurrence:
Australia; Bangladesh; Brunei Darussalam; Cambodia; India; Indonesia; Malaysia; Myanmar; Papua New Guinea; Philippines; Solomon Islands; Sri Lanka; Thailand; Viet Nam
Additional data:
Estimated area of occupancy (AOO) - km2:>2,000
Upper elevation limit (metres):1200
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:In general this is a common species. In South Asia, the population status is considered to be poorly known, but according to Bates and Harrison (1997) it is plentiful. In the Philippines, it is poorly known, but might be moderately common in agricultural areas (Heaney et al. 1998), and is probably common in populated areas, but this require confirmation as there has been little direct survey work undertaken in these modified habitats (L. Heaney pers. comm.). It is locally common in other parts of its Southeast Asian range outside of the Philippines.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:In the Nicobar Islands in India, it is found in dense forests near to the seashore. In Sri Lanka, the species has been recorded from dense forests, swampy areas and plantations. The diurnal roosts include hollows of old and decaying trees including Kitul Palm and Arecanut Palm, old buildings and rocky crevices. No sexual segregation is observed while roosting. It roosts in small colonies of five or six. This species is known to feed on termites, beetles and other insects and forages close to the ground. Its flight is very fast and high, initially flying 300 to 400 m from ground. It is recorded to emerge very early in the evening from its roost for its foraging bouts (Bates and Harrison 1997). In Southeast Asia, the species is strongly associated with modified habitats, including agricultural areas. It is a canopy feeder which roosts in buildings and shallow caves sometimes occurring in large groups. In the Philippines, records have mainly been from hollow coconut trees (L. Heaney pers. comm. 2006). In Melanesia and Australia, this species has been recorded from wooded areas ranging from open dry sclerophyll woodland to dense tropical moist forest. It roosts in shallow caves, buildings and tree hollows. Roosts may range from a few individuals to several hundred animals. The female gives birth to a single young (Flannery 1995; Strahan 1995; Bonaccorso 1998). In Australia, it has been found in open Pandanus woodland, as well as open eucalypt tall forests and coastal lowlands. It roosts in tree hollows, as well as caves (Woinarski and Milne 2005).

Threats [top]

Major Threat(s): There are no major threats to this widespread and adaptable species as a whole. In South Asia, it is locally threatened by deforestation, generally resulting from logging operations and from conversion of land to agricultural and other uses (Molur et al. 2002). In Australia, it is significantly threatened in coastal Queensland by clearance of coastal tropical woodland and changes to the fire regime at the northern and southern range limits (Duncan et al. 1999). Vegetation change due to saltwater intrusion and invasion by exotic species (such as Mimosa pigra) may affect habitat suitability (Woinarski and Milne 2005).

Conservation Actions [top]

Conservation Actions: This species has been recorded from many protected areas, and over much of the species range no direct conservation actions are needed. In South Asia, the species has been recorded from protected areas such as Campbell Bay National Park (Andaman and Nicobar Islands) and Kanha National Park (Madhya Pradesh). With, further studies needed on distribution, abundance, breeding biology and general ecology of this species. In South Asia, populations of this species should be monitored to record changes in abundance and distribution. There is also a need to identify populations that are being threatened by human induced habitat alterations in order to develop mitigation measures (C. Srinivasulu pers. comm.). It has been recorded from several protected areas in Australia (eg. Kakadu National Park), however, there is a need to identify and protect important roosting and foraging sites for the species. Further studies are needed in Australia into the distribution, abundance, natural history and threats to this species. The eastern Australian form has been described as a subspecies, and there is a there is a need for additional taxonomic work (T. Reardon pers. comm.). There is also a need to resolve the taxonomic status of the Northern Territory population relative to that in northeastern Queensland, as well as a study to determine its habitat, distribution, population size, and status (Woinarski and Milne 2005).

Citation: Csorba, G., Bumrungsri, S., Francis, C., Helgen, Bates, P., Heaney, L., Balete, D. & Thomson, B. 2008. Saccolaimus saccolaimus. The IUCN Red List of Threatened Species 2008: e.T19802A9017583. . Downloaded on 23 August 2017.
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