The southeastern shrew (Sorex longirostris) is a species of mammal in the family Soricidae. It is found in the southeastern United States.[2]
| Southeastern shrew[1] | |
|---|---|
| |
| A dismal swamp southeastern shrew, Sorex longirostris fisheri | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Eulipotyphla |
| Family: | Soricidae |
| Genus: | Sorex |
| Species: | S. longirostris
|
| Binomial name | |
| Sorex longirostris Bachman, 1837
| |
| |
| Southeastern shrew range | |
Description
editThe southeastern shrew (Sorex longirostris) is reddish-brown above on its back, head area while the shrew is grayish below in the abdomen area. The shrew's long tail is vaguely bi-colored, with dark and light brown as the color. The southeastern shrew is slightly smaller and more reddish than the masked shrew, which looks very similar to the southeastern shrew. Shrews possess lengthy pointed snouts, tiny eyes and ears. Their hearing and smell are very acute. The tips of the incisor teeth are dark chestnut in color. The pigmentation on the tip of their teeth is caused by deposition of iron in the outer pigmented teeth. It weighs in at 0.11-0.14 ounces and has an approximate total length of 2-4 inches. Their lifespan in the wild is rarely more than a year, but they can live as long as 18 or 19 months.[3]
Subspecies
editThere are three subspecies of the southeastern shrew, distinguished by their varying sizes:[4]
- The dismal swamp southeastern shrew (S. l. fisheri), in southeastern Virginia and eastern North Carolina, including the Great Dismal Swamp.[4][5]
- S. l. eionis, in northern Florida[4]
- S. l. longirostris, occurs in the rest of the range, including Maryland, Louisiana, Oklahoma, Missouri, Indiana, southern Ohio, and central Illinois.[4]
Breeding
editThe breeding season takes place from March–October and 1 to 2 litters is produced with 1-6 young per litter. The nests are composed of leafy material and fine grasses and are often found in rotting logs.
Behavior
editThe southeastern shrew is active during the day and night, usually hunting for insects to eat. They make a chipping noise that can be heard occasionally. Southeastern shrews are active, spending most of their time in the burrows of other animals and rooting beneath the leaf litter feeding on the forest floor.[6]
Distribution
editThe habitat for the southeastern shrews include forests and woodlands, scrub, shrub and brushlands, meadows and fields, swamps, marshes, and bogs. Their habitat ranges from fields to forests, but southeastern shrews prefer areas in early stages of succession and disturbed areas such as cultivated and abandoned fields with dense ground cover of Lonicera spp. (honeysuckles), grasses, and herbs.[7] Southeastern shrews are active both day and night, spending most of their time in the burrows of other animals and rooting beneath the leaf litter on the forest floor. The shrews have a population density of 12 individuals per acre.[8]
Diet
editThe southeastern shrew has a diet consisting primarily of spiders, as well as the larvae of butterflies, moths, slugs, and beetles; the species is also known to consume plants and centipedes.[9]
Predation
editKnown predators of the southeastern shrew are opossums;[4][10] owls,[4] including barn and barred owls;[10] snakes;[4] hooded mergansers;[10] domestic cats (see cat predation on wildlife);[10][4] and domestic dogs.[4]
References
edit- ^ Hutterer, R. (2005). Wilson, D.E.; Reeder, D.M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 290–291. ISBN 978-0-8018-8221-0. OCLC 62265494.
- ^ a b Cassola, F. (2017) [errata version of 2016 assessment]. "Sorex longirostris". IUCN Red List of Threatened Species. 2016: e.T41401A115184004. doi:10.2305/IUCN.UK.2016-3.RLTS.T41401A22313322.en. Retrieved 5 January 2023.
- ^ "Sorex longirostris Bachman; Southeastern Shrew". pick4.pick.uga.edu. Retrieved 2017-03-30.
- ^ a b c d e f g h i Endangered and Threatened Wildlife and Plants; Delisting of the Dismal Swamp Southeastern Shrew (Sorex longirostris fisheri, 65 Fed. Reg. 10420 (February 28, 2000).
- ^ Dismal Swamp southeastern shrew, Virginia Department of Wildlife Resources (accessed July 4, 2020).
- ^ "Tennessee Watchable Wildlife | Southeastern Shrew". www.tnwatchablewildlife.org. Retrieved 2017-03-30.
- ^ Linzey, Donald W. (2016). "Mammals of Great Smoky Mountains National Park: 2016 Revision". Southeastern Naturalist. 15: 1–93. doi:10.1656/058.015.m801. S2CID 89136211.
- ^ Anonymous (2014-07-16). "Southeastern Shrew". Outdoor Alabama. Retrieved 2017-03-30.
- ^ Charles W. Schwartz, Elizabeth R. Schwartz, The Wild Mammals of Missouri (2d rev. ed.: University of Missouri Press, 2001), p. 36.
- ^ a b c d Charles W. Schwartz, Elizabeth R. Schwartz, The Wild Mammals of Missouri (2d rev. ed.: University of Missouri Press, 2001), p. 37.