Reithrodontomys humulis (Audubon & Bachman 1841)

Reithrodontomys humulis és una espècie de rosegador de la família dels cricètids. És endèmic del sud-est dels Estats Units. Es tracta d'un animal nocturn que s'alimenta de llavors i insectes. El seu hàbitat natural són les zones obertes amb herba. Es creu que no hi ha cap amenaça significativa per a la supervivència d'aquesta espècie.^[1] El seu nom específic, humulis, significa 'humil' en llatí.^[2]

Referències

The eastern harvest mouse (Reithrodontomys humulis) is a species of rodent in the family Cricetidae. It is endemic to the Southeastern United States. Its natural habitats are subtropical or tropical seasonally wet or flooded lowland grassland, swamps, and pastureland.

Description

The eastern harvest mouse is characterized by brown pelage with a dark lateral line extending along its dorsal surface. The underbelly and ventral side of the tail are lighter colored than the rest of the body. The underbelly is a gray color that may be infused with some red character. The tail is bicolored with a dark brown coloration on the dorsal side and a white-gray coloration on ventral side.^[2] Females weigh more than males with increases in female weight being concordant with reproduction.^[3] They vary in length from 107–128 mm.^[4] The eastern harvest mouse is primarily nocturnal and has a life span of 9.5 weeks.^[2][5]

Habitat and distribution

The range of the eastern harvest mouse is wide across the North American continent. It reaches north to Delaware, south to the tip of Florida and as far west as Texas, Oklahoma and Ohio. They have been extirpated from Maryland. They are found in open grassy areas such as abandoned fields, marshes or wet meadows.^[5] Eastern harvest mice prefer to live in open, damp grassy areas such as meadows or marshes. This species does not live in the forest and builds nests that it lives in year round. The nests are composed of dry weeds, grass or other plant material and are globular shaped.^[2][4] The home range of this species is estimated slightly below 1,000 meters².^[2][3]

Diet

The eastern harvest mouse diet is not well known. In laboratories, they feed on a variety of items from seeds to fruits and vegetables.^[2] It is believed that in the wild, these mice feed solely on seeds, weeds and small insects.^[5][6]

Reproduction

The eastern harvest mouse mates during spring and autumn. The males are always prepared to mate while the females will not mate during the summer period.^[3] The gestation period for pregnant females is ~21 days and they only need as little as 24 days to begin reproducing again.^[2] The litter size is usually between 2-4 offspring, however, it can range from 1-8 offspring.^[7] Female parents raise the offspring.^[8] The young will leave the mother after 30 days. At birth, the young will weigh 1.2 g and will have closed eyes for the first 7–10 days.^[2]

Development

Immediately after birth, the young do not have fur and their eyes are closed. During the first thirty days, the pelage grows, the young gain weight and the eyes open. The fastest growth period is the first week after birth. They will leave the protection of the nest by the second or third week of development. The offspring lactate from the mother until 4 weeks of age. After thirty days, the young will leave the nest after they weigh enough.^[2]

References

• Baillie, J. 1996. Reithrodontomys humulis. 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.

Reithrodontomys humulis Reithrodontomys generoko animalia da. Karraskarien barruko Neotominae azpifamilia eta Cricetidae familian sailkatuta dago.

Erreferentziak

Kanpo estekak

• Reithrodontomys humulisri buruzko informazioa Mammals of The World datubasean

Ikus, gainera

• Reithrodontomys
• Cricetidae

Reithrodontomys humulis

La Souris des moissons orientale^[1] (Reithrodontomys humulis) est une espèce de rongeurs de la famille des Cricétidés. On le trouve seulement aux États-Unis. Ses habitats naturels sont tropicales ou subtropicales selon la saison humide ou inondés il va dans les prairies, les marécages et les pâturages.

Notes et références

De oostelijke oogstmuis (Reithrodontomys humulis) is een zoogdier uit de familie van de Cricetidae. De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Audubon & Bachman in 1941.

Voorkomen

De soort komt voor in de Verenigde Staten.

Reithrodontomys humulis^{[2][3][4][5][6]} är en däggdjursart som först beskrevs av John James Audubon och John Bachman 1841. Reithrodontomys humulis ingår i släktet skördemöss, och familjen hamsterartade gnagare.^[7][8] IUCN kategoriserar arten globalt som livskraftig.^[1] Inga underarter finns listade i Catalogue of Life.^[7]

Arten förekommer i östra och sydöstra USA från centrala Texas österut och från Ohio söderut. Habitatet utgörs av gräsmarker, träskmarker och jordbruksmark. Skogar undviks vanligen.^[1]

Individerna är huvudsakligen nattaktiva och klättrar på örter eller på långa stjälkar. De äter främst frön samt några insekter. Honor kan para sig hela året men de flesta ungar föds under våren och hösten. Dräktigheten varar 21 till 22 dagar och sedan föds cirka fyra ungar. Ungarna blir könsmogna efter två till fyra månader. De flesta individer lever däremot inte så länge. Medellivslängden är bara 9,5 veckor.^[1]

Bildgalleri

Källor

1. ^ [a b c d] 2008 Reithrodontomys humulis Från: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2 <www.iucnredlist.org>. Läst 2012-10-24.
2. ^ (1996) , database, NODC Taxonomic Code
3. ^ Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes (2003) , Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
4. ^ Wilson, Don E., and DeeAnn M. Reeder, eds. (2005) , Mammal Species of the World: A Taxonomic and Geographic Reference, 3rd ed., Reithrodontomys humulis
5. ^ Wilson, Don E., and F. Russell Cole (2000) , Common Names of Mammals of the World
6. ^ Banks, R. C., R. W. McDiarmid, and A. L. Gardner (1987) Checklist of Vertebrates of the United States, the U.S. Territories, and Canada, Resource Publication, no. 166
7. ^ [a b] Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (red.) (5 april 2011). ”Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist.”. Species 2000: Reading, UK. http://www.catalogueoflife.org/annual-checklist/2011/search/all/key/reithrodontomys+humulis/match/1. Läst 24 september 2012.
8. ^ ITIS: The Integrated Taxonomic Information System. Orrell T. (custodian), 2011-04-26

Externa länkar

• Wikimedia Commons har media som rör Reithrodontomys humulis.
  Bilder & media

Reithrodontomys humulis là một loài động vật có vú trong họ Cricetidae, bộ Gặm nhấm. Loài này được Audubon & Bachman mô tả năm 1841.^[1]

Hình ảnh

Chú thích

Tham khảo

• Dữ liệu liên quan tới Reithrodontomys humulis tại Wikispecies
• Phương tiện liên quan tới Reithrodontomys humulis tại Wikimedia Commons

Bài viết liên quan đến họ gặm nhấm Cricetidae này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.

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동부멧밭쥐(Reithrodontomys humulis)는 비단털쥐과에 속하는 설치류의 일종이다.^[2] 미국에서만 발견된다. 자연 서식지는 아열대 또는 열대 기후 지역의 계절성 습윤 또는 범람 저지대 초원, 늪, 목초지이다.

각주