Geographic Range
Hose's civets (
Diplogale hosei
) are native to Borneo. They have primarily been observed in the northwestern hills
and mountains of the island in Brunei and Malaysia, in addition to sightings 500 km
to the southwest in Indonesia.
- Other Geographic Terms
- island endemic
Habitat
Hose's civets are believed to primarily inhabit montane forests between 450 and 1500
m above sea level, with an additional sighting at 287 m. They are mainly a terrestrial
species that forages along mossy stream banks, although some specimens have been collected
from the forest canopy. The forests they inhabit are mostly mature mixed dipterocarp,
but some sightings have been in recently logged areas, possibly indicating that they
have some level of resilience to human activity.
- Habitat Regions
- tropical
- terrestrial
- Terrestrial Biomes
- rainforest
Physical Description
Hose's civets are blackish-brown, with a long body and short legs. Its underparts
are greyish or yellowish-white. It has long whiskers (over 15 cm long) and semi-webbed
paws that have patches of short hair between the pads of their foot; both of these
have been suggested as adaptations for foraging along stream and riverbanks and other
moist areas. Its nose is very distinctive: the rhinarium is a contrasting color to
the rest of the animal, and the protruding nostrils open at the sides of the nose.
The tail is very long: while the head-body length is around 50 cm, the tail is often
30 cm or more in length. While variations in color have been noted, it is not known
whether this is due to geographical or individual variations.
- Other Physical Features
- endothermic
- homoiothermic
- bilateral symmetry
- Sexual Dimorphism
- sexes alike
Reproduction
The mating system of Hose's civets is not known due to the elusive nature of the species and the lack of individuals in captivity.
Nothing is known about the reproductive behavior of Hose's civets. Other members of
the
civets and relative family
generally give birth to two litters a year; the closely related
banded palm civets
are believed to usually give birth to 1 to 2 young, which are born altricial and
require an extensive period of time to weaning.
- Key Reproductive Features
- iteroparous
- gonochoric/gonochoristic/dioecious (sexes separate)
- sexual
- viviparous
The parental investment of Hose's civets is not known. The closely related
banded palm civet
gives birth to altricial young that nurse for around 70 days. Even for that somewhat
more understood species, little is known about male parental investment.
Lifespan/Longevity
As the only individual held in captivity was released after 2 and a half months, the
lifespan of Hose's civets in captivity or the wild is not known.
Behavior
Very little is known about the habits of Hose's civet in the wild. Most of what is
known is based on inferences from physical characteristics, the few specimens spotted
or collected, and from the observations of the single individual ever held in captivity.
They are most likely nocturnal: camera traps primarily recorded the species at night,
and during 2 and a half months of observation the individual in captivity only left
its hole after dark. Based on this individual's behavior and on the few records from
the wild, Hose's civets are mostly terrestrial in habit, rarely using trees for shelter
or foraging; however, a few early specimens were collected from the forest canopy.
Its partially webbed paws and long whiskers might be adaptations for living in moist
areas, suggesting they might be semi-aquatic.
Home Range
The home range of Hose's civets is unknown.
Communication and Perception
Like other members of the
civets, genets, linsangs, and relatives family
, Hose's civets have glands for scent-marking; how extensively they use them, however,
is unknown. Vocalizations have not been mentioned in any reported live observations.
- Other Communication Modes
- scent marks
Food Habits
No definite information about the diet of Hose's civets in the wild is known. The
single individual that has been held in captivity ate mostly small fish, as well as
chicken and lunchmeat, but refused fruit, rice, and fish that were too large to eat
in a single bite or that had large scales or spines. This, along with their likely
adaptations for foraging around streams, seems to indicate that fish make up most
of their diet, along with other meat. Fruit and other plant matter probably only contributes
significantly to their diet when fish or other meat is unavailable. The individual
in captivity ate about 100 g of food daily, leaving any excess.
- Animal Foods
- birds
- fish
- aquatic crustaceans
Predation
redators of Hose's civets have not been identified.
- Anti-predator Adaptations
- cryptic
Ecosystem Roles
Very little information exists about the ecosystem roles of Hose's civets. As it seems
to live in extremely low densities, it is unlikely that it plays a major role in ecosystem
dynamics, or that it is the principal predator, prey, or host of any particular species.
As it doesn't seem to eat fruit, it is unlikely that it acts as a seed disperser.
Economic Importance for Humans: Positive
There are no known direct economic benefits of Hose's civets, as they are almost unknown
to humans and live in an unpopulated area. Other members of the
civets, genets, linsangs, and relatives family
are hunted or farmed for the secretions of their scent glands, which is a valuable
substance in the making of perfumes; however, no record of harvesting Hose's civets
for this purpose exists.
Economic Importance for Humans: Negative
Just as there are no known direct economic benefits to humans provided by Hose's civets, there are also no known adverse impacts. It is unlikely that they are an important reservoir of diseases that affect humans, due to their low density and range being limited mostly unpopulated areas.
Conservation Status
As they are very elusive animals, the exact status of Hose's civets is uncertain.
It is likely, however, that they have been adversely impacted by human activity such
as logging throughout their range. Low population densities could make them vulnerable
to the region-wide habitat loss and degradation associated with logging and development.
Because of this, the IUCN has listed them as Vulnerable. In Sarawak, Malaysia, they
are listed as protected.
Additional Links
Contributors
Jessica McLaughlin (author), University of Alaska Fairbanks, Laura Prugh (editor), University of Washington, Laura Podzikowski (editor), Special Projects.
- oriental
-
found in the oriental region of the world. In other words, India and southeast Asia.
- native range
-
the area in which the animal is naturally found, the region in which it is endemic.
- island endemic
-
animals that live only on an island or set of islands.
- tropical
-
the region of the earth that surrounds the equator, from 23.5 degrees north to 23.5 degrees south.
- terrestrial
-
Living on the ground.
- rainforest
-
rainforests, both temperate and tropical, are dominated by trees often forming a closed canopy with little light reaching the ground. Epiphytes and climbing plants are also abundant. Precipitation is typically not limiting, but may be somewhat seasonal.
- endothermic
-
animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. Convergent in birds.
- bilateral symmetry
-
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
- iteroparous
-
offspring are produced in more than one group (litters, clutches, etc.) and across multiple seasons (or other periods hospitable to reproduction). Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).
- sexual
-
reproduction that includes combining the genetic contribution of two individuals, a male and a female
- viviparous
-
reproduction in which fertilization and development take place within the female body and the developing embryo derives nourishment from the female.
- nocturnal
-
active during the night
- motile
-
having the capacity to move from one place to another.
- visual
-
uses sight to communicate
- chemical
-
uses smells or other chemicals to communicate
- scent marks
-
communicates by producing scents from special gland(s) and placing them on a surface whether others can smell or taste them
- visual
-
uses sight to communicate
- tactile
-
uses touch to communicate
- chemical
-
uses smells or other chemicals to communicate
- cryptic
-
having markings, coloration, shapes, or other features that cause an animal to be camouflaged in its natural environment; being difficult to see or otherwise detect.
- carnivore
-
an animal that mainly eats meat
- piscivore
-
an animal that mainly eats fish
References
Brodie, J., A. Giordano. 2011. Small carnivores of the Maliau Basin, Sabah, Borneo, including a new locality for Hose's Civet Diplogale hosei . Small Carnivore Conservation , 44: 1-6.
Dinets, V. 2003. Records for small carnivores from Mount Kinabalu, Sabah, Borneo. Small Carnivore Conservation , 28: 9.
Francis, C. 2002. An observation of Hose's Civet in Brunei. Small Carnivore Conservation , 26: 19.
Hon, J., J. Azlan. 2008. "Diplogale hosei (Hose's Civet)" (On-line). IUCN Red List. Accessed October 04, 2012 at http://www.iucnredlist.org/details/full/6635/0 .
Mathai, J., J. Hon, N. Juat, A. Peter, M. Gumal. 2010. Small carnivores in a logging concession in the Upper Baram, Sarawak, Borneo. Small Carnivore Conservation , 42: 1-9.
Matsubayashi, H., H. Bernard, A. Ahmad. 2011. Small carnivores of the Imbak Canyon, Sabah, Malaysia, Borneo, including a new locality for Hose's Civet Diplogale hosei . Small Carnivore Conservation , 45: 18-22.
Samejia, H., G. Semiadi. 2012. First record of Hose's Civet Diplogale hosei from Indonesia, and records of other carnivores in the Schwaner Mountains, Central Kalimantan, Indonesia. Small Carnivore Conservation , 46: 1-7.
Santoro, K. 2004. "Hemigalus derbyanus" (On-line). Animal Diversity Web. Accessed December 10, 2012 at http://animaldiversity.ummz.umich.edu/accounts/Hemigalus_derbyanus/ .
Schipper, J., M. Hoffmann, J. Duckworth, J. Conroy. 2008. The 2008 IUCN red listings of the world's small carnivores. Small Carnivore Conservation , 39: 29-34.
Thomas, O. 1892. On some mammals from Mount Dulit, North Borneo. Proceedings of the General Meetings for Scientific Business of the Zoological Society of London : 221-227. Accessed November 14, 2012 at http://www.archive.org/stream/proceedingsofzoo1892zool#page/222/mode/1up .
Van Rompaey, H., J. Azlan. 2004. Hose's Civet, Diplogale hosei . Small Carnivore Conservation , 30: 18-19.
Wells, K., A. Biun, M. Gabin. 2005. Viverrid and herpesterid observations by camera and small mammal cage trapping in the lowland forests of Borneo including a record of the Hose's Civet, Diplogale hosei . Small Carnivore Conservation , 32: 12-14.
Wilting, A., J. Fickel. 2012. Phylogenetic relationship of two threatened endemic viverrids from the Sunda islands, Hose's Civet and Sulawesi Civet. Journal of Zoology : 1-7.
Yasuma, S. 2004. Observations of a live Hose's Civet Diplogale hosei . Small Carnivore Conservation , 31: 3-5.