Overview

Distribution

Range Description

This widespread species ranges from the Near East, through the north of the Arabian Peninsula and Iran to most of South Asia. It has been recorded from southeastern Turkey (Yiğit et al. 2001), eastern Syria, Kuwait and Iraq (Harrison and Bates 1991), ranging through much of central and southern Iran to Pakistan and Afghanistan, from here it ranges throughout India, and Sri Lanka, being also widely distributed through much of Nepal south of the Himalayas. It ranges in elevation from sea level up to 2,000 m (Molur et al. 2005).
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Geographic Range

The range of Tatera indica includes India, Sri Lanka, Pakistan, as far west as Syria, and north to Afghanistan and Nepal.

Biogeographic Regions: palearctic ; oriental

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Physical Description

Morphology

Physical Description

Tatera indica is one of the largest species in the murid subfamily Gerbillinae. Body mass ranges from 100 to 227 grams, and body length from 15 to 17 centimeters. Color ranges from reddish brown to fawn. Thick fur covers the body but the tail hair is sparse. A small tuft of black hair is found at the tip of the tail. The tail is approximately one half the body length of the animal and has a light brown band on each side. The soles of the feet are hairless and pigmented, as in other members of the genus Tatera, while the ears are also naked and elongated.

Range mass: 100 to 227 g.

Range length: 150 to 170 mm.

Other Physical Features: endothermic ; homoiothermic; bilateral symmetry

Sexual Dimorphism: sexes alike

Average basal metabolic rate: 0.422 W.

  • Vaughn, T., J. Ryan , N. Czaplewski. 2000. Mammalogy, Fourth Edition. Pennsylvania: Saunders College Publishing.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is found in a range of dry or arid habitats. In South Asia, it occurs in dry deciduous forests, scrub forests, grasslands, rocky areas, hot deserts, arid and semi-arid regions and uncultivated areas. It has been found to occupy undisturbed barren open areas (Molur et al. 2005). In Turkey, it appears to prefer uncultivated arid and semi-arid habitats with soft soil and dry river slopes (Yiğit et al. 2001). Harrison and Bates (1991) indicatethat the species can be found in agricultural country not far from water, including heavily grazed areas.

Systems
  • Terrestrial
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Habitat

Tatera indica individuals prefer sandy plains and grasslands that allow extensive burrowing. They will dig extensive burrows with chambers for resting, food storage, and sleeping. The depth of a burrow depends on the surrounding soil composition and season. These gerbils are generally not found in areas with very low rainfall or cold temperatures. They occupy almost any kind of habitat if there is enough suitable food and are found frequently near agricultural fields. These are perhaps the most common gerbil species throughout much of their range.

Habitat Regions: temperate ; terrestrial

Terrestrial Biomes: desert or dune ; savanna or grassland

Other Habitat Features: agricultural

  • Goyal , S., P. Ghosh. 1993. Burrow Structure of 2 Gerbil Species of Thar Desert, India. Acta Theriologica, 38/4: 453-456.
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Trophic Strategy

Food Habits

The diet of Indian gerbils consists of grasses, leaves, roots, and grains. They also eats grubs, insects, and nestling ground birds. T. indica store grain in their burrows for consumption in the dry season and move on to roots and fruits of plants when the stores have been consumed. During the wet season insect availability increases and the proportion of insects and other arthropods in their diet rises to as high as 40%. This species has also been known to kill and eat smaller rodents and other mammals. Cannibalism on young is common in both captivity and the wild.

Animal Foods: birds; mammals; insects; terrestrial non-insect arthropods

Plant Foods: leaves; roots and tubers; seeds, grains, and nuts; fruit

Foraging Behavior: stores or caches food

Primary Diet: omnivore

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Associations

Ecosystem Roles

The role of Tatera indica in the ecosystem is not well understood. However, it is clear that, through their abundance and food habits, they significantly impact populations of plants and arthropods throughout their range. They also serve as an important prey base for birds of prey and other small to medium-sized predators. Their burrowing activities aid in soil turnover and the re-distribution of soil nutrients.

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Predation

These gerbils are primarily preyed on by birds of prey, especially owls. Jackals, snakes, lizards, cats, and foxes will also eat these gerbils. Their primary means of escaping predation are nocturnality, escaping to their burrows, and heightened senses that allow them to detect predators. They are also very fast and can leap meters into the air when surprised.

Known Predators:

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Known predators

Tatera indica is prey of:
Strigiformes
Serpentes
Varanus
Vulpes
Felis silvestris
Canis aureus
Falconiformes

This list may not be complete but is based on published studies.
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Known prey organisms

Tatera indica preys on:
Arthropoda
Insecta
Aves
Mammalia

This list may not be complete but is based on published studies.
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Life History and Behavior

Behavior

Communication and Perception

Little research has been conducted on communication in Tatera indica. However, like most mammals, they communicate through auditory, chemical, visual, and tactile signals. As nocturnal rodents it is likely that they perceive their environment largely through auditory and chemical signals, as well as using their vibrissae to sense tactile stimuli.

Communication Channels: visual ; tactile ; acoustic ; chemical

Perception Channels: visual ; acoustic

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Life Expectancy

Lifespan/Longevity

A captive Tatera indica lived for 7 years. In the wild, however, most individuals don't survive their first year of life and adults probably live only a few years.

Range lifespan

Status: captivity:
7 (high) years.

Average lifespan

Status: captivity:
7.0 years.

Average lifespan

Status: captivity:
7.0 years.

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Lifespan, longevity, and ageing

Maximum longevity: 7 years (captivity) Observations: One captive specimen lived for 7 years (Richard Weigl 2005).
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Reproduction

Reproduction

Males and females of this species live apart. The relationship between the sexes is currently not known.

It is not yet known whether mating occurs above or below ground in burrows. Duration of the estrous cycle was found to be 4.5 days in the laboratory. The gestation period for T. indica ranges from 21 to 30 days, with litter size ranging from 1 to 10 young, with 5 to 6 being the most common number of young per litter. Young Indian gerbils are independent as early as 21 days of age and reach sexual maturity as early as 10 weeks of age. Females attain sexual maturity earlier than males.

Breeding interval: Indian gerbils can breed multiple times throughout the year, the interval is not well known.

Breeding season: Indian gerbils breed throughout the year, with peaks in February, July, August, and November.

Range number of offspring: 4 to 10.

Range gestation period: 21 to 30 days.

Range time to independence: 21 (low) days.

Range age at sexual or reproductive maturity (female): 10 (low) weeks.

Range age at sexual or reproductive maturity (male): 10 (low) weeks.

Key Reproductive Features: iteroparous ; year-round breeding ; gonochoric/gonochoristic/dioecious (sexes separate); viviparous

Average birth mass: 3 g.

Average number of offspring: 5.4.

Parental care in T. indica has not been described. However, as in all mammals, females nurse and care for their young until they reach independence. The young are born in a relatively helpless state in a nest chamber in a burrow. Their eyes open at 14 days old.

Parental Investment: altricial ; female parental care

  • Nowak, R. 1991. Walker's Mammals of the World. Baltimore: The Johns Hopkins University Press.
  • Thomas, B., M. Oommen. 1999. Reproductive biology of the South Indian gerbil <> under laboratory conditions. Mammalia, 63/3: 341-347.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Tatera indica

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Species: 6
Species With Barcodes: 1

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2008

Assessor/s
Kryštufek, B., Shenbrot, G., Sozen, M. & Molur, S.

Reviewer/s
Amori, G. (Small Nonvolant Mammal Red List Authority) & Cox, N. (Global Mammal Assessment Team)

Justification
Listed as Least Concern in view of its wide distribution, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

History
  • 1996
    Lower Risk/least concern
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Conservation Status

Tatera indica is not listed by CITES or the IUCN, they are the most common species of gerbil in the Indian subcontinent and are abundant throughout their range.

US Federal List: no special status

CITES: no special status

IUCN Red List of Threatened Species: least concern

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Population

Population
The species is locally abundant.

Population Trend
Unknown
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Threats

Threats

Major Threats
There are no major threat to this species.
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Management

Conservation Actions

Conservation Actions
It is found in numerous protected areas. It is listed in the Schedule V (considered as vermin) of the Indian Wildlife (Protection) Act, 1972.
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Relevance to Humans and Ecosystems

Benefits

Economic Importance for Humans: Negative

Tatera indica are crop pests, especially in areas where grain is stored. The animals will feed on seeds, sprouts, mature plants, ears of corn, and saplings in orchards.

The presence of this species in villages results in transfer of fleas from wild to domestic rodents, which may be partly responsible for the transmission of bubonic plague in and around India.

Negative Impacts: injures humans (carries human disease); crop pest

  • Kumar, K., S. Jamil-Ur-Rahman, S. Sharma, K. Gill, R. Katyal. 1997. Entomological and rodent surveillance in plague-suspected area during September 1994 and thereafter. Japanese Journal of Medical Science and Biology, 50/3: 97-111.
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Economic Importance for Humans: Positive

These gerbils consume large quantities of insects which are potential agricultural pests. Indian gerbils are also hunted for food in southern India.

Positive Impacts: food ; controls pest population

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Wikipedia

Indian Gerbil

The Indian Gerbil (Tatera indica) is a species of rodent in the family Muridae. It is found in Afghanistan, India, Iran, Iraq, Kuwait, Nepal, Pakistan, Sri Lanka, and Syria. It is the only species in the genus Tatera. Members of the genus Gerbilliscus have historically been placed in the genus Tatera.

References

  • Baillie, J. 1996. Tatera indica. 2006 IUCN Red List of Threatened Species. Downloaded on 20 July 2007.
  • Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 in Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore.
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