Hose's palm civet


Hose's palm civet
Hose's palm civet[1]
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Viverridae
Subfamily: Hemigalinae
Genus: Diplogale
Thomas, 1912
Species: D. hosei
Binomial name
Diplogale hosei
(Thomas, 1892)
Hose's Palm Civet range

The Hose's palm civet (Diplogale hosei), also known as the Hose's civet (Dusun: Tani, Kadazan: Toni, Penan: Perayen, Malay: Musang Hitam Pudar), is a civet found in Borneo. It is named after zoologist Charles Hose and is a member of the family Viverridae. It is endemic to the montane forests of northern Borneo.

What little is known of the species comes primarily from 17 museum specimens worldwide, the first of which was collected in Sarawak by C. Hose in 1891. It was not until 1997 that the first living specimen was obtained;[3] this was, however, released after 2 months – there remains no Hose’s civet in captivity anywhere in the world.

Contents

Appearance

The upperparts (from nose to tail tip, including outer surfaces of the four limbs) are dark brown to blackish brown and the underparts (from the chin to the tip of the tail and the inner surface of all four limbs) are white or slightly brownish white.[3][4] The face has dark rings around the eyes and very long, white facial whiskers (sensory hairs) and the large, wet snout (rhinarium) has a contrasting flesh colour. The two nostrils protrude widely, diverging to open on both sides.[3] The under surfaces of the feet are pale (flesh coloured) and the footpads brown. The feet are partly webbed, with patches of short hair between the footpads.[4]

The Hose’s civet has a head-body length of 472–540 millimetres (18.6–21 in), a tail of 298–346 millimetres (11.7–13.6 in), a hindfoot length of 74–81 millimetres (2.9–3.2 in) and a ear length of 36–39 millimetres (1.4–1.5 in); it is estimated to weigh about 1.4–1.5 kilograms (3.1–3.3 lb) and has 40 teeth.[3][4]

Activity pattern

The Hose’s civet is both crepuscular and nocturnal by nature and is thought to be of a more ground dwelling nature than other palm civets.[5][6] It is thought to make dens in holes between rocks and/or tree roots.[3]

Diet

Little is known about the diet of Hose’s civet in the wild, though it is thought to forage on small fish, shrimps, crabs, frogs and insects[3][7] among mossy boulders and streams. The sole individual ever in captivity ate only meat and fish and not fruit, the preferred diet of all other civets in Borneo.[3]

Distribution and habitat

Hose's civet has only been recorded from a few localities in Sarawak and Sabah in Malaysian Borneo, and in Brunei; it has not been recorded from Kalimantan (Indonesian Borneo).

There have been very few field sightings of the species, and these have been mainly from lower montane forest and mature mixed dipterocarp forest.[8]

A few recent sightings exist, including a capture in Brunei (which was subsequently released)[3] and a photo taken by a camera trap in lowland forest of Kinabalu National Park in Sabah.[9] Another camera trap picture taken in Kalimantan may represent this species, but has been the subject of controversy.[10]

The highest encounter rate of the species so far has been in the Sela’an-Linau Forest Management Unit (FMU), a logging concession in the Upper Baram, Sarawak, where fourteen images of the Hose's civet were obtained between 2004 and 2005 from four different sites in the concession.[6] The previous largest series of encounters from one locality consisted of four specimens collected between 1945 and 1949 by Tom Harrisson in the nearby Kelabit Highlands,[7] suggesting that this part of Sarawak may be the prime habitat of the species.[5][6]

The few records of Hose’s civet from across its range have been mainly from montane forest sites,[3][4][5][11] giving rise to the assumption that it is a montane species. However, it has been reported from an altitude of only 450m in Brunei[12] and 600m in Batu Song, Sarawak;[4] an individual was camera trapped in the lowland forest of Mount Kinabalu National Park, Sabah, also at an altitude of only 600m,[9] and one of the 14 images from the Sela’an-Linau FMU was from an altitude of 730 metres (2,400 ft).[5][6]

It may be that the preferred habitat of Hose's civet is highly humid, mossy forests, near mossy boulders and streams.[6]

Similar species

The Hose's civet is similar to the banded palm civet (Hemigalus derbyanus). Hose’s civet was first described as Hemigalus hosei in 1892 by Oldfield Thomas and it was only in 1912 that he found that the difference in shape of muzzle and teeth, as well as the obvious difference in the pattern of colouration, implied the necessity of distinguishing Diplogale from Hemigalus.[8] Like the Hose’s civet, the banded palm civet is strictly nocturnal and more ground dwelling;[5] the distribution of Hose’s civet, however, is much more restricted and more confined to higher altitude forest.

The large snout and long facial whiskers of Hose’s civet is similar to that of the otter civet (Cynogale bennettii). The otter civet is known to be semi-aquatic and has webbed feet; it occurs mainly in lowland rain forest.[4]

Adaptability to altered habitat

Hose’s civet may be intolerant to disturbance caused by logging, though whether it is able to persist and/or disperse through forest fragmented by slash and burn fields and logging roads is still unknown.[5][6]

Conservation status

Currently, the basic factors likely to determine the long-term future of the Hose’s civet, such as population densities, degree of dependency on old-growth forest, ranging and dispersal patterns and others, are entirely unknown, making specific conservation measures impossible.[5][6] No protected area within its range is known to hold a large population,[5] although in Brunei and Sabah, individuals have been recorded in Ulu Temburong National Park and Mount Kinabalu National Park, respectively. In Sarawak, no protected area is known to hold a population of the species. It is listed on the IUCN Red List as Vulnerable[2] a listing which is completely inferential, based on its highly restricted range and extensive habitat loss (deforestation) and degradation within that range due to logging and conversion to non-forest land uses. Hunting could increasingly be a threat to the species as population numbers and trends are completely unknown.[5][2] It is possible that the species could qualify for a higher threat category once more information is available on its ecology and threats. It is thus considered urgent to promote and conduct further research on this species.[2]

References

  1. ^ Wozencraft, W. Christopher (16 November 2005). "Order Carnivora (pp. 532-628)". In Wilson, Don E., and Reeder, DeeAnn M., eds. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore: Johns Hopkins University Press, 2 vols. (2142 pp.). p. 552. ISBN 978-0-8018-8221-0. OCLC 62265494. http://www.bucknell.edu/msw3/browse.asp?id=14000360. 
  2. ^ a b c d Hon, J. & Azlan, M.J. (2008). "Diplogale hosei". IUCN Red List of Threatened Species. Version 2011.1. International Union for Conservation of Nature. http://www.iucnredlist.org/apps/redlist/details/6635. Retrieved 18 August 2011. 
  3. ^ a b c d e f g h i Yasuma, S. (2004). "Observations of a live Hose’s Civet Diplogale hosei". Small Carnivore Conservation 31: 3–5.
  4. ^ a b c d e f Payne, J., Francis, C. M., & Phillips, K. (1985). A field guide to the mammals of Borneo. The Sabah Society with World Wildlife Fund Malaysia, Kota Kinabalu and Kuala Lumpur, Malaysia.
  5. ^ a b c d e f g h i Mathai, J., Hon, J., Juat, N., Peter, A., & Gumal, M. (2010). "Small carnivores in a logging concession in the Upper Baram, Sarawak, Borneo". Small Carnivore Conservation 42: 1–9.
  6. ^ a b c d e f g Mathai, J. (2010). "Hose's Civet: Borneo's mysterious carnivore". Nature Watch 18/4: 2–8.
  7. ^ a b Davis, D. D. (1958). "Mammals of the Kelabit plateau, northern Sarawak". Fieldiana, Zoology 39: 119–147.
  8. ^ a b Van Rompaey, H., & Azlan J., M. (2004). "Hose's Civet, Diplogale hosei". Small Carnivore Conservation 30: 18–19.
  9. ^ a b Wells, K., Bium, A., & Gabin, M. (2005). "Viverrid and herpestid observations by camera and small cage trapping in the lowland rainforests on Borneo including a record of the Hose’s Civet, Diplogale hosei". Small Carnivore Conservation 32: 12–4.
  10. ^ Chapron, G., Veron, G. & Jennings, A.P. (2006). "New carnivore species in Borneo may not be new. Conservation News". Oryx 40: 134
  11. ^ Dinets, V. (2003). Records of small carnivores from Mount Kinabalu, Sabah, Borneo. Small Carnivore Conservation 28: 9.
  12. ^ Francis, C. M. (2002). "An observation of Hose’s Civet in Brunei". Small Carnivore Conservation 26: 16.

Further reading

  • Schreiber, A., Wirth, R., Riffel, M., & Van Rompaey, H. (1989). Weasels, civets, mongooses, and their relatives: an action plan for the conservation of mustelids and viverrids. IUCN, Gland, Switzerland.

External links


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