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Hairy-tailed bolo mice have also be known as Bolomys lasiurus, Akodon lasiurus, A. arviculoides, A. lenguarum, Necromys lasiurus, Cabreramys lasiurus, and Zygodontomys lasiurus.

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Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
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Shivani Raval, University of Michigan-Ann Arbor
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Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
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Matthew Wund, University of Michigan-Ann Arbor
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Behavior

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There is little known about the communication among hairy-tailed bolo mice. There is also little information about the perception channels used by these mice but they probably rely heavily on their sense of touch and smell as opposed to vision.

Communication Channels: chemical

Perception Channels: visual ; tactile ; acoustic ; chemical

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Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
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Shivani Raval, University of Michigan-Ann Arbor
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Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Conservation Status

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At this time, hairy-tailed bolo mice are not threatened and they are under no special status on IUCN Red List and CITES.

US Federal List: no special status

CITES: no special status

IUCN Red List of Threatened Species: least concern

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Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
author
Shivani Raval, University of Michigan-Ann Arbor
author
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Benefits

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Like most mice, hairy-tailed bolo mice are known to carry diseases and parasites. They may also damage some crops if they are living in cultivated fields.

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

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Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
author
Shivani Raval, University of Michigan-Ann Arbor
author
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Benefits

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Little is known about the economic importance of hairy-tailed bolo mice for humans.

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bibliographic citation
Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
author
Shivani Raval, University of Michigan-Ann Arbor
author
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Associations

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Hairy-tailed bolo mice play an important role in the ecosystem as seed dispersers. They are also a food source for their predators.

Ecosystem Impact: disperses seeds

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Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
author
Shivani Raval, University of Michigan-Ann Arbor
author
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Trophic Strategy

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Hairy-tailed bolo mice are primarily granivores, with 82% of their diet consisting of seeds. Such a large dependence on seeds can be a problem, especially when fires at the end of the dry season affect the vegetation and seed sources. This may be part of why there are such a large fluctuations in population size related to seed production. As a result of the fires, the mice show an increased dependence on invertebrates or insects during the following rainy season.

Animal Foods: insects; terrestrial non-insect arthropods

Plant Foods: seeds, grains, and nuts

Primary Diet: herbivore (Granivore )

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bibliographic citation
Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
author
Shivani Raval, University of Michigan-Ann Arbor
author
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Distribution

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Necromys lasiurus (hairy-tailed bolo mouse) is distributed throughout central South America. Their range extends from Brazil and Paraguay to Bolivia and into the northern Argentine province of Misiones.

Biogeographic Regions: neotropical (Native )

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Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
author
Shivani Raval, University of Michigan-Ann Arbor
author
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Habitat

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Hairy-tailed bolo mice are usually found in grassland or savanna habitats. In Brazil, they can be found in the Cerrado, the regional name giveg to the Brazilian savannas or the Caatinga in the northeastern part of Brazil. They may sometimes be found in forests, typically inhabiting the area near the edges. Occasionally hairy-tailed bolo mice are known to reside in cultivated or abandoned fields.

Habitat Regions: tropical ; terrestrial

Terrestrial Biomes: savanna or grassland ; forest

Other Habitat Features: agricultural

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bibliographic citation
Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
author
Shivani Raval, University of Michigan-Ann Arbor
author
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Life Expectancy

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Although Necromys lasiurus is fairly well studied, the lifespan of this mouse is unknown.

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bibliographic citation
Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
author
Shivani Raval, University of Michigan-Ann Arbor
author
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Morphology

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Hairy-tailed bolo mice are an olive-gray color with a lighter grayish white color on their belly, although the fur color does vary slightly according to geographic range. Aside from the lighter belly, they are uniformly colored. They have short ears, small eyes, and their hind feet are somewhat darker than their backs. They lack any distinctive facial markings. Their tail, for which they are named, is shorter than the length of their head and body and is lightly haired. On average, the head and body of the mice measures around 103 mm and the tail measures 75 mm. The average weight is 35 g. There is slight sexual dimorphism in that males sre larger than the females.

Average mass: 35 g.

Average length: 178 mm.

Other Physical Features: endothermic ; homoiothermic; bilateral symmetry

Sexual Dimorphism: male larger

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bibliographic citation
Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
author
Shivani Raval, University of Michigan-Ann Arbor
author
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Associations

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While there is little written about the predators of hairy-tailed bolo mice, there is no doubt that predation on these animals is strong, as in other small rodents.

Anti-predator Adaptations: cryptic

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bibliographic citation
Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
author
Shivani Raval, University of Michigan-Ann Arbor
author
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Reproduction

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Although there have been many studies on the reproduction of this species, there is little information on the mating systems of hairy-tailed bolo mice.

Reproductive activity of hairy-tailed bolo mice increases during the rainy seasons (January to March) compared to the dry seasons (July to September). Reproductive rate probably follows rainfall because rainfall affects food availability, growth of vegetation, and the probability of fire. Although the peak in reproductive rate occurs during the rainy season, there is also high reproductive activity in the late dry season from October to November. Hairy-tailed bolo mice also produce more than one time a year and on average have 3-6 young per litter.

Breeding interval: Multiple times a year

Breeding season: January-March

Average number of offspring: 3-6.

Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; viviparous

Little is known about the parental investment provided by hairy-tailed bolo mice but in related species of mice in the family Muridae offspring are altricial and the mother provides most of the parental care.

Parental Investment: altricial ; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female)

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The Regents of the University of Michigan and its licensors
bibliographic citation
Raval, S. 2004. "Necromys lasiurus" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Necromys_lasiurus.html
author
Shivani Raval, University of Michigan-Ann Arbor
author
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
editor
Matthew Wund, University of Michigan-Ann Arbor
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Hairy-tailed bolo mouse

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The hairy-tailed bolo mouse or hairy-tailed akodont (Necromys lasiurus) is a South American rodent species of the family Cricetidae.[2] It is found in Argentina, Bolivia, Brazil, and Paraguay.

Description

The hairy-tailed bolo mouse grows to a head-and-body length between 118 and 138 mm (4.6 and 5.4 in), with a tail length of 66 to 96 mm (2.6 to 3.8 in). The ears are small and rounded, and have a sparse covering of hair. The body fur is variable in colour, but usually the back is olive grey to dark brown, the flanks are paler and washed with ochre, and the underparts are white or pale grey. The demarcation line between upper parts and underparts is ill-defined. The tail is bicolor, dark above and pale below, and clad in short, fairly dense fur, and the feet are brown on top with tufts of white hair between the digits, which have strong nails.[3]

Distribution and habitat

The hairy-tailed bolo mouse is native to southern South America. Its range extends from eastern and central Brazil as far west as Rondônia, through eastern Paraguay to northeastern Argentina. The exact boundaries are not well known, with various isolated outlying areas and with populations west of the Paraguay River overlapping the range of the Paraguayan bolo mouse (N. lenguarum). Its typical habitat is grassland, the verges of cultivated fields and areas of secondary woodland.[3]

Ecology

The hairy-tailed bolo mouse is mainly diurnal, with some activity at dusk and at night, particularly in the dry season. Its diet varies with the time of year, but mainly consists of seeds and green plant material, and sometimes includes small invertebrates. The breeding season is mostly in the spring and summer, and litter sizes average about five young. This mouse is a reservoir for certain hantaviruses, including the Araraquara strain from Brazil, which can cause disease in humans.[3] It is a host of the Acanthocephalan intestinal parasite Moniliformis necromysi.[4]

References

  1. ^ Marinho Filho, J.; Vieira, E.; D'elia, G.; Pardiñas, U. (2016). "Necromys lasiurus". IUCN Red List of Threatened Species. 2016: e.T2859A22329380. doi:10.2305/IUCN.UK.2016-3.RLTS.T2859A22329380.en. Retrieved 19 November 2021.
  2. ^ Musser, G.G.; Carleton, M.D. (2005). "Superfamily Muroidea". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 1130. ISBN 978-0-8018-8221-0. OCLC 62265494.
  3. ^ a b c Patton, James L. (2015). Mammals of South America, Volume 2: Rodents. University of Chicago Press. pp. 238–241. ISBN 978-0-226-16957-6.
  4. ^ Gomes, A.P.N.; Costa, N.A.; Gentile, R.; Vilela, R.V.; Maldonado, A. (2020). "Morphological and genetic description of Moniliformis necromysi sp. n. (Archiacanthocephala) from the wild rodent Necromys lasiurus (Cricetidae: Sigmondontinae) in Brazil". Journal of Helminthology. 94: e138. doi:10.1017/S0022149X20000188. PMID 32188515.
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Hairy-tailed bolo mouse: Brief Summary

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The hairy-tailed bolo mouse or hairy-tailed akodont (Necromys lasiurus) is a South American rodent species of the family Cricetidae. It is found in Argentina, Bolivia, Brazil, and Paraguay.

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