Brandt's vole

Brandt's vole, (Lasiopodomys brandtii), also known as the steppe vole, is a species of rodent in the family Cricetidae. This organism is commonly found in China, Mongolia, and Russia.

Brandt's Vole
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Cricetidae
Subfamily: Arvicolinae
Genus: Lasiopodomys
Species:
L. brandtii
Binomial name
Lasiopodomys brandtii
(Radde, 1861)
Synonyms

L. aga (Kastschenko, 1912)
L. hangaicus (Bannikov, 1948)
L. warringtoni (Miller, 1913)[2]

Morphology

Brandt's vole is about 15 centimetres (6 inches) long with a tail up to 3.5 centimetres long. Its ears are small and the short fur is uniform sandy-brown, paler underneath. The tail is entirely brown and there are dense hairs on the hind part of the feet.[3]

Distribution and habitat

Brandt's vole is found in Nei Mongol, Jilin, and Hebei provinces in north-east China,[2] in Mongolia and southern Transbaikalia in Russia. Brandt's vole is commonly found in grassland areas.[4] Its typical habitat is dry steppes and pastures. Its sometimes also found in lakeside meadows and river valleys.[3]

Ecology

Brandt's vole is a colonial species. Each family establishes a network of burrows with several entrances, long passages, storerooms, and nesting chambers. The voles are active during both the day and night and their behaviour varies at different times of year.[5] They feed on both the underground and aerial parts of plants. Large stores of food are laid up before the winter and the energy intake of the voles seems to be correlated with the length of day.[6] There are four or five broods each year, with each litter consisting of about seven young. Population levels are subject to wide swings. Under unfavourable conditions, this vole can be wiped out of some of the regions in which it is normally found, but when the conditions are right, mass outbreaks can occur. This periodically happens in Mongolia when millions of hectares of pasture are invaded. Under this onslaught, the pastures can become very bare, poor subsoil can be brought to the surface by burrowing activities and coarse weeds can become established, seriously harming the grazing for domestic animals.[3]

Cold adaptations

When exposed to cold temperatures, voles increase their resting metabolic rate.[7] This increased metabolic rate is caused by increased activity from mitochondria in the vole's brown fat, as more energy is used in nonshivering thermogenesis to generate heat. Nonshivering thermogenesis, decreased serum leptin levels, fat mobilization, and hyperphagia are all associated adaptations Brandt’s voles undergo in cold environments.[8] Hyperphagia, or serious hunger leading to increased food intake, is the highest in colder months, but voles expend so much energy during this period that they weigh less in summer months.[9]

References
  1. Avirmed, D.; Batsaikhan, N. & Tinnin, D. (2008). "Lasiopodomys brandtii". IUCN Red List of Threatened Species. 2008. Retrieved 4 June 2009. Database entry includes a brief justification of why this species is of least concern.
  2. Mammal Species of the World
  3. AgroAtlas
  4. Dai, Xin; Zhou, Ling-Yu; Xu, Ting-Ting; Wang, Qiu-Yue; Luo, Bin; Li, Yan-Yu; Gu, Chen; Li, Shi-Ping; Wang, Ai-Qin; Wei, Wan-Hong; Yang, Sheng-Mei (2020-03-11). "Reproductive responses of the male Brandt's vole, Lasiopodomys brandtii (Rodentia: Cricetidae) to tannic acid". Zoologia. 37: 1–11. doi:10.3897/zoologia.37.e52232. ISSN 1984-4689.
  5. Seasonal changes of the activity patterns of Brandt’s vole (Lasiopodomys brandtii) in the typical steppe in Inner Mongolia
  6. Zhao, ZJ; Wang, DH (2006). "Short photoperiod influences energy intake and serum leptin level in Brandt's voles (Microtus brandtii)". Horm Behav. 49 (4): 463–9. doi:10.1016/j.yhbeh.2005.10.003. PMID 16293255. S2CID 34683241.
  7. Zhang, Xue-Ying; Wang, De-Hua (2006-06-01). "Energy metabolism, thermogenesis and body mass regulation in Brandt's voles (Lasiopodomys brandtii) during cold acclimation and rewarming". Hormones and Behavior. 50 (1): 61–69. doi:10.1016/j.yhbeh.2006.01.005. ISSN 0018-506X.
  8. Tang, Gang-Bin; Cui, Jian-Guo; Wang, De-Hua (2009-11-01). "Role of hypoleptinemia during cold adaptation in Brandt's voles (Lasiopodomys brandtii)". American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. 297 (5): R1293–R1301. doi:10.1152/ajpregu.00185.2009. ISSN 0363-6119.
  9. Li, Xing-Sheng; Wang, De-Hua (2005-09-01). "Regulation of body weight and thermogenesis in seasonally acclimatized Brandt's voles (Microtus brandti)". Hormones and Behavior. 48 (3): 321–328. doi:10.1016/j.yhbeh.2005.04.004. ISSN 0018-506X.
  • 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.
  • Dai, Xin; Zhou, Ling-Yu; Xu, Ting-Ting; Wang, Qiu-Yue; Luo, Bin; Li, Yan-Yu; Gu, Chen; Li, Shi-Ping; Wang, Ai-Qin; Wei, Wan-Hong; Yang, Sheng-Mei (2020-03-11). "Reproductive responses of the male Brandt's vole, Lasiopodomys brandtii (Rodentia: Cricetidae) to tannic acid". Zoologia. 37: 1–11. doi:10.3897/zoologia.37.e52232. ISSN 1984-4689.
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