Geographic Range
The geographic range of
Lepus coreanus
, also known as the Korean hare, includes the entire Korean Peninsula as well as southern
Jilin Province and northeastern parts of China.
- Biogeographic Regions
- palearctic
Habitat
Korean hares occupy various habitats across their geographic distribution, from plains
to mountains, preferring areas where vegetation is abundant. A study conducted in
Mt. Chirisan National Park, South Korea indicated that
L. coreanus
abundance was positively associated with the percent of shrub cover in a given landscape.
Korean hares can live in a variety of areas, including cultivated lands, plains, scrublands,
and forest areas.
- Habitat Regions
- temperate
- terrestrial
- Terrestrial Biomes
- savanna or grassland
- forest
- mountains
- Other Habitat Features
- agricultural
Physical Description
Fur color in Korean hares varies, but is generally a brownish shade. The dorsal parts
of the body are usually brown or grayish brown, and the ventral area is paler or white.
An adult Korean hare weighs 2.1 to 2.6 kg, and has a body length of 45 to 54 cm. The
tail is short, typically 2 to 5 cm in length with a black stripe located on the upper
side in the middle, and the ears are 7.6 to 8.3 cm long. They have long ears and well-furred
feet to aid in their ability to travel fast and cover vast areas in a short time period.
Korean hares are born fully furred and with their eyes opened. They have very big
eyes which allow for greater visual acuity in dim light. Male hares are slightly smaller
than female hares.
- Other Physical Features
- endothermic
- homoiothermic
- bilateral symmetry
- Sexual Dimorphism
- female larger
Reproduction
There is little known about mating in Korean hares, but there are many commonalities
to mating within
hares
. Hares use scent cues secreted from special glands located under the chin and in
the groin. These scent cues are believed to play a key role in sexual communication,
as well as in signaling social status. Male Korean hares become bolder during the
mating season, engaging in fights with other males and pursuing females. They fight
by using boxing motions with their forefeet and kicking with their hind feet.
- Mating System
- polygynous
Korean hares have a long breeding season, which peaks in spring. Up to a dozen males
congregate around a female in estrus, boxing each other and chasing off other rivals.
The gestation period for most
Lepus
species is 42 days and the average litter size increases seasonally to a peak then
declines; there are normally 3 to 5 litters per year. The annual production of young
per female is about 10.
- Key Reproductive Features
- iteroparous
- seasonal breeding
- gonochoric/gonochoristic/dioecious (sexes separate)
- sexual
- induced ovulation
- fertilization
- viviparous
Little is known about parental investment in Korean hares. However, male
hares
are not generally involved in caring for young. Maternal investment is also limited
in
hares
. They engage in a reproductive strategy known as "absentee parenting." Nursing takes
place once or twice a day, usually at night, and only lasts for just a few minutes.
It is thought that the lack of social contact between the mother and her young is
a strategy which diminishes the chances of attracting the attention of predators.
- Parental Investment
- precocial
- female parental care
-
pre-fertilization
- provisioning
-
protecting
- female
-
pre-hatching/birth
-
provisioning
- female
-
protecting
- female
-
provisioning
-
pre-weaning/fledging
-
provisioning
- female
-
provisioning
Lifespan/Longevity
The majority of Korean hares die within the first year of life in the wild because
they are subject to high predation rates. In captivity, they have been reported to
live to the age of 5.
Behavior
Little information on the behavior of this species has been reported. They typically
travel in open habitats to feed during late afternoon or evening. They are not thought
to be social and there is no indication of territorial behavior, but hierarchies do
exist which affects access to food. Shrubs, bushes, and rocks are used as cover to
protect these hares from predators. Korean hares occupy different habitats in regions
where they overlap geographically with other
hares and rabbits
. The ranges of
hare
species are not static; one species can compete with another and exclude it from
its former habitat if ecological conditions change.
- Key Behaviors
- cursorial
- terricolous
- saltatorial
- nocturnal
- crepuscular
- motile
- nomadic
- sedentary
- solitary
- dominance hierarchies
Home Range
Home range size of Korean hares is not reported in the literature.
Communication and Perception
Details of communication among Korean hares have not been reported. In general,
hares
communicate with each other by drumming their feet and through scent cues. Female
hares make a shrieking sound to call to the young for feeding times.
Food Habits
Korean hares are likely entirely herbivorous, similar to other
hares
. They eat many types of grasses and shrubs and will chew bark from trees.
- Plant Foods
- leaves
- roots and tubers
- wood, bark, or stems
- flowers
Predation
Korean hares use speed and agility to avoid becoming prey to predators. They also
camouflage themselves by flattening out among vegetation.
Gray wolves
and
red foxes
are known predators of Korean hares. Other possible predators are large
raptors
and
snakes
. They are also well-known game animals and trapped by villagers for food.
- Anti-predator Adaptations
- cryptic
Ecosystem Roles
Korean hares act as both important prey items for many species and, as herbivores,
act to control plant growth and disperse seeds and nutrients. Hares can be most selective
in eating grass seed-heads, but whether this curtails or increases the spread of
these grasses will depend on the relative number of seeds digested and passed through
the animal. In hilly country, these herbivores eat at the bottom of the valley floors
and defecate while traveling back and forth from their daylight habitat several hundred
meters uphill. Thus hares actively reverse the normal downhill flow of nutrients in
an ecosystem.
- Ecosystem Impact
- disperses seeds
Economic Importance for Humans: Positive
Korean hares are trapped by villagers for food and fur.
- Positive Impacts
- food
- body parts are source of valuable material
Economic Importance for Humans: Negative
Korean hares are considered "pests" in agricultural regions because they may forage
on crops. They are thought to pose a problem to barley growing near the mountains
in Kyeonsnam Province and sometimes girdle fruit trees.
- Negative Impacts
- crop pest
Conservation Status
There are no known conservation measures in place for this species. It is not known
if this species is present in any protected areas. In China, this species has been
regionally Red Listed as Least Concern.
Other Comments
Korean hares are an example of Bergmann's Rule - where larger species within a genus
occur at higher latitudes.
Hare
species in the far north weigh around 5 kg, most species in temperate regions average
3 kg, and species occurring near the equator are 2 kg or less. However, even within
this genus there are exceptions to this rule.
Additional Links
Contributors
Stacy Faigle (author), University of Wyoming, Hayley Lanier (editor), University of Wyoming - Casper, Tanya Dewey (editor), University of Michigan-Ann Arbor.
- 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.
- 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).
- terrestrial
-
Living on the ground.
- 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.
- forest
-
forest biomes are dominated by trees, otherwise forest biomes can vary widely in amount of precipitation and seasonality.
- mountains
-
This terrestrial biome includes summits of high mountains, either without vegetation or covered by low, tundra-like vegetation.
- agricultural
-
living in landscapes dominated by human agriculture.
- 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
- sexual
-
reproduction that includes combining the genetic contribution of two individuals, a male and a female
- induced ovulation
-
ovulation is stimulated by the act of copulation (does not occur spontaneously)
- fertilization
-
union of egg and spermatozoan
- viviparous
-
reproduction in which fertilization and development take place within the female body and the developing embryo derives nourishment from the female.
- young precocial
-
young are relatively well-developed when born
- female parental care
-
parental care is carried out by females
- saltatorial
-
specialized for leaping or bounding locomotion; jumps or hops.
- nocturnal
-
active during the night
- crepuscular
-
active at dawn and dusk
- motile
-
having the capacity to move from one place to another.
- nomadic
-
generally wanders from place to place, usually within a well-defined range.
- sedentary
-
remains in the same area
- solitary
-
lives alone
- dominance hierarchies
-
ranking system or pecking order among members of a long-term social group, where dominance status affects access to resources or mates
- acoustic
-
uses sound to communicate
- chemical
-
uses smells or other chemicals to communicate
- visual
-
uses sight to communicate
- tactile
-
uses touch to communicate
- acoustic
-
uses sound 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.
- food
-
A substance that provides both nutrients and energy to a living thing.
- herbivore
-
An animal that eats mainly plants or parts of plants.
- folivore
-
an animal that mainly eats leaves.
References
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