Geographic Range
Pallas cats (
Otocolobus manul
, Pallas 1776; syn.
Felis manul
, reclassified by Johnson
et al
. 2006) are wild monotypic felines of the genus
Otocolobus
, which are from the leopard cat lineage, endemic to central Asia. They are most abundant
in Mongolia and the Tibetan Plateau; however, they have a broad but patchy distribution
across central Asia and are considered rare and uncommon from the Caspian Sea through
southern Turkmenistan, Kazakhstan, Kyrgyzstan, Iran, Afghanistan, Baluchistan, Ladakh,
western and central China and southern Russia and Siberia.
- Biogeographic Regions
- palearctic
- oriental
Habitat
Pallas cats are found in temperate grassland biomes and in the mountain steppe and
semi-arid desert habitats characteristic of central Asia. These areas are comprised
of open flatlands, hills, upland steppe, rocky outcrops and ravine habitat. Sightings
of Pallas cats have been reported up to 1,500 meters above sea level in Russia, and
up to 1,700 meters above sea level in Mongolia. The habitat of Pallas cats in Russia
is dominated by vegetation composed of
Artemesia
,
Festuca
,
Stipa
, and a variety of small shrubs. These areas are characterized by temperate continental
climates with temperatures ranging from 38 degrees Celsius to -43 degrees Celsius.
These areas often have small amounts of precipitation (generally less than 200 mm),
most of which falls as rain in the summer. Pallas cats are poorly adapted to moving
through deep snow, so their habitat is restricted to areas with less than 10 cm of
snow cover during the winter.
Pallas cats are habitat specialists, confining their activity largely to, or near
rocky and ravine areas, as a predator avoidance strategy. Pallas cats use marmots'
(
Marmota sibirica
) burrows and rock crevices as dens on a daily basis, such den sites are essential
habitat for this species. Dens are chosen significantly more in rocky or ravine habitats.
There are three main den types used by Pallas cats on an annual basis including summer
dens that are either abandoned
marmots'
burrows or rock dens; maternal dens, which are usually rock dens with many entrances
for predator avoidance or escape; and winter dens, which are usually
marmots'
burrows and provide increased thermoregulatory and heat retention benefits over rock
dens. Pallas cats show fidelity to a particular den for consecutive days and often
return to the same den after spending time in other parts of their home range.
- Habitat Regions
- temperate
- Terrestrial Biomes
- savanna or grassland
- mountains
Physical Description
Pallas cats are small felines, about the size of
domestic cats
but appear heavier due to their long, fluffy fur coats. Their body length ranges
50 to 62 cm, with tail lengths of 23 to 31 cm and they usually weigh between 2.5 and
5.0 kg. They show no significant sexual dimorphism; however, males may be slightly
heavier. They have a small spherical head, a thick build, short stocky legs and a
thick furry tail that does not thin or become pointed at the end. They have a short,
protruding muzzle and a large forehead with bulging, large eyes, set low and directed
forward, which gives the impression of a āflat faceā. This is intensified by the
shape of their broad ears and the large bunches of elongated hairs occurring on their
cheeks and under their ears.
Pallas cats have very long, fluffy, silky fur that is characterized by white-tipped
guard hairs that project prominently over a darker pelage, although there can be considerable
inter-individual and sub-species variation of coloration. Their coat is generally
a complex combination of light grey, with pale yellow to ocherous or pale yellow to
reddish patches on their flanks and a dirty white posterior abdomen and groin. There
are often six or seven narrow black transverse strips dorsally, extending onto the
sides, which may vary in length but are always located posterior to the shoulders.
Their tail is uniformly grey above and below, with a very small black tip and seven
narrow black fields surrounding. Their legs are generally grey, with short brown hairs
between the digits that do not cover the pads or form tufts. The darkest coloration
occurs on their neck and chest, especially between their forelimbs and transitioning
into a dirty white throat and abdomen. Their head is mostly a pure, light grey with
scattered black spots. Their eyes, upper and lower lips and their nasal region are
surrounded by white patches. There are two narrow black strips under their eyes on
their cheeks, one of which terminates at their ear and the other extends around to
the back of their neck. The back of their ears are grey, with a pale yellow tinge
and black fringe at the tip with tufts of white hairs in front and on the inner surface
of their ear pinna. White vibrissae are present on their cheeks and over their eyes.
Their skull is rounded and relatively broad laterally, with a very short rostral region
and large orbits that are set vertically and directed forward. Their palate is short
and broad. Tympanic bullae are set closely together and are not large, but have a
swollen and highly developed antero-outer chamber, with a distinct suture between
the ectotympanic and endotympanic chambers. Their angular process is short and thin.
Their cheek teeth form an acute angle and are in a plane together with a line joining
their molars. Their second premolars are invariably absent in the upper row, with
short massive upper carnassials that lack an antero-inner cusp. There are no sex-related
structural differences in the skull of Pallas cats, aside from the females being somewhat
smaller.
- Other Physical Features
- endothermic
- homoiothermic
- bilateral symmetry
- Sexual Dimorphism
- sexes alike
Reproduction
Pallas cats display a polygamous mating system, typical of most
felids
, males mate with several females in a given mating season. There is little, to no
dimorphism between sexes; however, scratches were seen on maleās faces, suggesting
an ad-hoc mating strategy, where several males compete for a female. Females were
not observed with fighting injuries. Mating may occur in dens, with the male staying
in close proximity to the den for three to four days after copulation, likely to guard
his mates during receptivity. Breeding is highly seasonal and is photo-dependent;
females produce one litter of kittens per year. Mating occurs between December and
March, with litters born between late March and May.
- Mating System
- polygynous
Gestation in female Pallas cats lasts for approximately 75 days; their altricial kittens
are born blind and helpless, with dense fuzzy pelage. Litter sizes in captivity average
3.57 (±0.53) individuals per litter, but have ranged up to six or eight per litter;
however, the average litter size in the wild is not known. In Mongolia, 31.9% of kittens
survived to adulthood, with no significant difference between males and females.
- Key Reproductive Features
- iteroparous
- seasonal breeding
- year-round breeding
- gonochoric/gonochoristic/dioecious (sexes separate)
- sexual
- viviparous
Male Pallas cats display no parental care. Kittens generally remain within the den
for two months after birth, at which time they āmoltā into an adult coat and usually
weigh between 500 to 600 g. When the kittens are three to four months old, they follow
their mother for foraging in social mother-offspring groups. Kittens disperse between
four to five months of age, by which time they have usually reached adult size and
weight. Young may have large dispersal movements away from their maternal dens and
mature quickly, they become reproductively viable within their first year.
- Parental Investment
- female parental care
-
pre-weaning/fledging
-
provisioning
- female
-
protecting
- female
-
provisioning
-
pre-independence
-
provisioning
- female
-
protecting
- female
-
provisioning
Lifespan/Longevity
Adult Pallas cats have an average lifespan of 27.1 months in the wild, with mortality
heavily biased towards winter.
Behavior
Pallas cats are solitary, crepuscular carnivores. The lack of nocturnal species found
in their diet supports the conclusion that Pallas cats are not nocturnal. Pallas cats
are habitat specialists, having adjusted their behaviors and feeding habits to spend
as much time as possible within the relatively āsafeā areas of rocky and ravine habitats.
There is no obvious social structure indicated by space use, male home range boundaries
and core areas are not exclusive from other males. Female home ranges are likely separated
from those of other females, due to a patchy distribution of the desirable rocky habitat,
separated by the less desirable open steppe habitats. Male Pallas cats are significantly
more likely to use the relatively less safe edge areas of their home ranges, which
maximizes their prey intake, to gain energy before the mating season; whereas females,
and especially females with kittens, are more likely to stay within the core rocky
areas of their home range and minimize time spent in open steppe habitats.
The availability of suitable den sites is a critical factor influencing Pallas cats'
habitat use. Dens are used for giving birth, raising young, thermoregulation, feeding,
mating and cover or escape from predators. Food is sometimes taken back to summer
and winter dens, especially when kittens are present. Females take live prey, or whole
uneaten
birds
, back to the maternal den where kittens play hunt. Wild Pallas cats have never been
observed resting outside of their dens and most activities that do not require the
cat to be on the surface, are undertaken in the den. Ironically, these cats cannot
excavate their own burrows and therefore rely very heavily on the availability of
abandoned
marmots'
burrows for winter dens, in addition to rock crevices and caves in the summer.
Pallas cats use a variety of behaviors when they are hunting including stalking, flushing
and ambushing prey. Stalking occurs when the cat creeps slowly and low to the ground,
using vegetation or rocks as cover, until it is close enough to pounce. Flushing occurs
when cats walk quickly through summer undergrowth, to flush out and capture small
mammals
and
birds
. This technique has not been observed in the winter, likely because it requires high
prey density and tall grass cover. Finally, ambush hunting occurs when cats wait outside
a burrow for prey to emerge, before attacking, this is most commonly seen in winter.
- Key Behaviors
- terricolous
- crepuscular
- motile
- solitary
Home Range
Pallas cats have very large home ranges for a mesocarnivore of their size. Male home
ranges are four to five times the size of females. Male home ranges vary from 20.9
square kilometers to 207.0 square kilometers, with a mean size of 98.8 (±17.2) square
kilometers and a ācoreā use area of 16.8 square kilometers. Female home ranges vary
from 7.4 square kilometers to 125.2 square kilometers, with a mean size of 23.1 (±8.9)
square kilometers and a ācoreā use area of 4.2 square kilometers. Neither prey availability,
nor season has a significant effect on home range size for either sex. Female home
range size appears to be influenced by the connectivity of rocky habitats within the
surrounding home range area. Females strongly select for rocky, connected hill-slopes
and ravines as ācore areasā that offer maximum protection from predators. The home
range size for female cats with kittens is reduced; this is likely for mothers to
stay close to the maternal den, to guard her litter. In contrast, males maintain large
home ranges throughout variable habitat (open steppe, rocky and ravine areas) and
spend a significantly greater amount of time in less safe āedge areasā. This allows
them to maximize their overlap with female home ranges, thereby enhancing their potential
to reproduce come mating season and access higher prey density areas to gain energy
before mating season begins.
Communication and Perception
Captive Pallas cats spray and cheek rub like many
Felids
, but this behavior is unconfirmed in wild populations. These behaviors likely provide
temporal information between individuals and may reduce the probability of hostile
encounters.
- Communication Channels
- chemical
- Other Communication Modes
- scent marks
Food Habits
The majority (85.5%) of Pallas cats' diet is comprised of small
rodents
and pikas (
Ochotona dauurica
).
Pikas
are an especially important component of their diet in the summer months. Pallas
cats are dietary specialists who depend on
pikas
for the majority of their energy requirements, as they are two to three times larger
than other available prey species. Specializing in capturing
pikas
reduces their foraging costs, per unit of energy gain. In addition,
pikas
are relatively slow moving compared to
rodents
and use distinct trails to move between burrows, making them much easier to locate
and capture. In the winter months, there is a distinct diversification of Pallas cats'
prey base, to a more generalized foraging strategy, likely due to decreasing availability
of all prey. In a study of 146 scat samples, the most frequent small mammal remains
were Daurian pikas (
Ochotona dauurica
), Mongolian gerbils (
Meriones unguiculatus
) and mountain voles (
Alticola stoliczkanus
), but there were also small amounts of
passerines
, carrion and
insects
present. There are also sexual differences in dietary diversity, with females narrowing
their dietary niche to a greater degree than males in summer and generalizing their
dietary niche to a greater degree than males in winter.
- Primary Diet
-
carnivore
- eats terrestrial vertebrates
- Animal Foods
- mammals
- carrion
- insects
Predation
Pallas cats face the possibility of predation from a variety of terrestrial and aerial
predators, such as
red foxes
,
wolves
,
domestic dogs
and large
birds
of prey.
Humans
are also known to hunt Pallas cats, especially in Mongolia where body parts are said
to have a medicinal value and furs may be used in subsistence living or nomadic trading.
Given the threats of predation faced by Pallas cats, they spend most of their time
in 'safe' habitats, such as rocky hills or ravines, while avoiding open areas like
steppe and grasslands. Pallas cats rely primarily on their preferred rocky habitat
to avoid detection by predators and escape if pursued. Threatened Pallas cats will
run into a ābolt holeā, such as a rock crevice or den, slink down low and freeze next
to rocks or vegetation, or run into the cover of nearby rocks or ravines. Furthermore,
they move slowly compared to other sympatric and predatory carnivores and rely on
crypsis and camouflage with their background, this is accomplished with their complex
coat pattern and color. Pallas cats may be poor runners; therefore running is an unlikely
means of escape from large terrestrial or aerial predators.
- Anti-predator Adaptations
- cryptic
Ecosystem Roles
There has been very little research in regards to the role Pallas cats play in steppe
ecosystems. Pallas cats are āmesocarnivores,ā which suggests that they are mid-trophic
level carnivores whose diet is comprised mostly of meat, but also some
invertebrate
material. They are successful predators of
pikas
and small
rodents
, and are in turn predated upon by larger carnivores, such as
red foxes
and
wolves
. They depend quite strongly on abandoned
marmots'
dens for shelter in the winter. Pallas cats may undergo interspecific competition
with the following species: red foxes (
Vulpes vulpes
), Corsac foxes (
Vulpes corsac
) Eurasian badgers (
Meles meles
), steppe polecats (
Mustela eversmannii
), mountain weasels (
Mustela altaica
) and a number of raptor
birds
.
Pallas cats are highly susceptible to the obligate intracellular coccidian,
Toxoplasma gondii
, in captivity worldwide.
Domestic cats
, and other members of Family
Felidae
are likely the definitive hosts, it is transmitted placentally and through lactation,
from mother to kittens. In Pallas cats, no treatments are completely effective at
clearing the body of the tissue cysts caused by
T. gondii
and once it is contracted, it is most often fatal. This is likely the limiting factor
of successful propagation of this species in captivity, as there is a high newborn
mortality in kittens (~60%) within four months of birth. The cause of this extreme
susceptibility to this condition in Pallas cats is unknown. The maternal immune response
in seropositive pregnant Pallas cats is not protective for the kittens, as it is in
domestic cats
and other
cat
species. In a study of 15 wild and 9 captive Pallas cats, 87% of the wild individuals
were negative for
T. gondii
, while 100% of the captive individuals were positive for the parasite. This lack
of
T. gondii
in wild Pallas cats suggests that they have minimal exposure to this parasite in
their natural habitat and only become infected after being brought into captivity.
Furthermore,
T. gondii
oocysts have poor survivorship at high altitudes and extreme temperatures, which
likely makes the hot summers and bitterly cold winters typical of Pallas cats' habitat,
a difficult environment for the parasite to propagate and spread. Should the population
of Pallas cats in the wild decrease to a point where extinction is imminent, it is
unlikely that current captive reproductive individuals could be re-introduced, due
to the severe mortality associated with
T. gondii
, unless a successful treatment is developed.
- Toxoplasma gondii (class Conoidasida ; phylum Apicomplexa )
Economic Importance for Humans: Positive
Pallas cats have little economic importance to humans. Their furs are not valuable
in todayās market, and international trade in their pelts has largely ceased since
the 1980ās. Mongolia still permits hunting for āhousehold purposesā; however, the
permitting system is ineffective and furs are likely still illegally exported to China.
Their fat and organs are still used as medicines in nomadic Mongolia and Russia and
domestic dogs
from nomad camps in Mongolia hunt them. Pallas cats have a negligible effect on agriculture,
public health and wildlife management. It is possible that Pallas cats may provide
a pest-control benefit for agriculture through their hunting of
pikas
and small
rodents
, which are the target of wide-spread and common pest control programs throughout
central Asia.
- Positive Impacts
- body parts are source of valuable material
- controls pest population
Economic Importance for Humans: Negative
There are negligible negative effects to humans caused by Pallas cats.
Conservation Status
Pallas cats (
Otocolobus manul
, syn.
Felis manul
) are listed as āNear Threatenedā by the IUCN Red List of Threatened Species, and
under Appendix II of the Convention on International Trade in Endangered Species of
Wild Fauna and Flora (CITES). Their population is decreasing across their range, the
population in the western part of their range around the Caspian Sea is likely extirpated.
They are widespread but uncommon across the Tibetan Plateau and are rare and uncommon
in Afghanistan, Pakistan, India, Iran, Armenia, Azerbaijan, Russiaās Krasnoyarsk region
and Turkmenistan. The Russian regions of Tyva and Chita hold the largest populations
in Russia, while Mongolia appears to be the species āstrongholdā, as they are widely
distributed, but still declining across most of the country.
The major threats facing this species include declining prey bases, habitat degradation
from economic expansion and direct threats posed by
humans
and their
dogs
. There have been long-term and effective vermin control programs for
pikas
and
marmots
, implemented on a large scale across central Asia. This poses a direct threat to
the survival of Pallas cats. Not only do
pikas
represent their primary food source, but
marmots'
dens are an essential habitat requirement and are used extensively by Pallas cats,
especially throughout the cold winter months. A decrease in either of these prey or
den building species will likely have a serious impact on the populations of Pallas
cats in the wild. Furthermore, habitat degradation from agriculture and mining exploration
is occurring on a wide scale in Mongolia and Russia, which may lead to a further reduction
in suitable rocky habitat for these cats and contribute to further fragmentation of
their suitable habitat. Finally, although their furs are of relatively little economic
value, even in Mongolia, Pallas cats are still occasionally shot by nomadic hunters
or, more often, trapped accidentally in leg traps set for
marmots
,
foxes
and
wolves
.
The lack of knowledge of the ecology, reproductive strategies and population dynamics
of this species makes long-term conservation efforts extremely difficult. While Pallas
cats are known to occur within protected areas and wildlife and nature reserves in
Mongolia, China and Russia, it is estimated that the steppe-grassland biome is the
least protected of all major biomes in the world, when this is coupled with their
large home ranges and patchy distributions, the effectiveness of these reserves in
preserving a viable population, remains to be seen.
Additional Links
Contributors
Nicole Caithness (author), University of Manitoba, Jane Waterman (editor), University of Manitoba, Leila Siciliano Martina (editor), Texas State University.
- Palearctic
-
living in the northern part of the Old World. In otherwords, Europe and Asia and northern Africa.
- native range
-
the area in which the animal is naturally found, the region in which it is endemic.
- 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.
- temperate
-
that region of the Earth between 23.5 degrees North and 60 degrees North (between the Tropic of Cancer and the Arctic Circle) and between 23.5 degrees South and 60 degrees South (between the Tropic of Capricorn and the Antarctic Circle).
- tropical savanna and grassland
-
A terrestrial biome. Savannas are grasslands with scattered individual trees that do not form a closed canopy. Extensive savannas are found in parts of subtropical and tropical Africa and South America, and in Australia.
- savanna
-
A grassland with scattered trees or scattered clumps of trees, a type of community intermediate between grassland and forest. See also Tropical savanna and grassland biome.
- temperate grassland
-
A terrestrial biome found in temperate latitudes (>23.5° N or S latitude). Vegetation is made up mostly of grasses, the height and species diversity of which depend largely on the amount of moisture available. Fire and grazing are important in the long-term maintenance of grasslands.
- mountains
-
This terrestrial biome includes summits of high mountains, either without vegetation or covered by low, tundra-like vegetation.
- 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.
- polygynous
-
having more than one female as a mate at one time
- 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).
- seasonal breeding
-
breeding is confined to a particular season
- year-round breeding
-
breeding takes place throughout the year
- 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.
- female parental care
-
parental care is carried out by females
- crepuscular
-
active at dawn and dusk
- motile
-
having the capacity to move from one place to another.
- solitary
-
lives alone
- 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
- acoustic
-
uses sound to communicate
- chemical
-
uses smells or other chemicals to communicate
- carrion
-
flesh of dead animals.
- 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
References
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