User:Bfiorenzo/sandbox
Topic: Antelope Jackrabbit
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- Add in an "Evolutionary History" section.
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- Add in a "Feeding" section. What do these animals eat, what type of feeding habits do they exhibit?
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Bibliography:
- Best, Troy L., and Travis H. Henry. "Lepus Alleni." Mammalian Species, no. 424, 1993., pp. 1-8.
- Brown, David E., et al. "Ecology of the Antelope Jackrabbit (Lepus Alleni)." The Southwestern Naturalist, vol. 59, no. 4, 2014., pp. 575-587doi:10.1894/JKF-47.1.
- Hinds, David S. "Acclimatization of Thermoregulation in Desert-Inhabiting Jackrabbits (Lepus Alleni and Lepus Californicus)." Ecology, vol. 58, no. 2, 1977., pp. 246-264.
- Lorenzo, Consuelo, et al. "Evolutionary History of the Antelope Jackrabbit, Lepus Alleni."Journal of the Arizona-Nevada Academy of Science, vol. 45, no. 2, 2014., pp. 70-75doi:10.2181/036.045.0203.
- Mearns, E. 1890. Description of supposed new species and subspecies of mammals from Arizona. Bulletin of the American Museum of Natural History, 2: 27-307.
- Vorhies, C., W. Taylor. 1933. The life histories and ecology of jack rabbits, Lepus alleni and Lepus californicus ssp. in relation to grazing in Arizona. University of Arizona, College of Agriculture, Agricultural Experiment Station Technical Bulletin, 49: 471-587.
The antelope jackrabbit (Lepus alleni), found in Southern Arizona and Northwestern Mexico, is a species of North American hare. Within this range, it occupies dry desert areas. This species is placed in family Leporidae, which is within order Lagomorpha. Male and female antelope jackrabbits are identical in appearance.[1] This species is large in size with long, pointed ears and a distinct coat coloration. The antelope jackrabbit has a white belly, light grey sides, a back peppered with black, and orange coloration on the neck and chest.[2] It is similar to species like the Black-tailed Jackrabbit and White-sided Jackrabbit.[2] It is most active during twilight (crepuscular) and nocturnal, but can be active during the day when conditions are favorable (heavy cloud coverage). It feeds on cacti, mesquite leaves, and other vegetation.[2]
Contents
Evolutionary History
[edit]Fossil evidence places the genus Lepus in North America approximately 2.5 million years ago.[3] A now extinct jackrabbit species, Lepus giganteus, was thought to exist in North America during this time. This species shared similar physical traits with the antelope jackrabbit, making it difficult to differentiate fossils of the two species. In a 2014 study, researchers hypothesized that L. giganteus served as a common ancestor to the antelope jackrabbit and black-tailed jackrabbit.[3] The black-tailed jackrabbit coexists with the antelope jackrabbit and the two species maintain a sympatric relationship. In the same 2014 study, genetic analysis concluded that three Lepus species share a common white-sided jackrabbit ancestor: L. callotis (White-sided jackrabbit), L. alleni (antelope jackrabbit), and L. flavigularis (Tehuantepec jackrabbit). Based on this evidence, researchers also concluded that the black-tailed jackrabbit, though closely related to white-sided jackrabbits, exists in its own separate subclade.[3]
Geographic Range[edit | edit source]
[edit]In the United States, the antelope jackrabbit is found in parts of Arizona and states like Chihuahua, Nayarit, Sinaloa and Sonora in Northwestern Mexico.[2] Compared to the other hare species present in North America, the antelope jackrabbit's range is limited. This species does not inhabit areas further east than the sky islands in Arizona and the Sierra Madre Occidental in Mexico.[4] It also does not radiate west of Florence, Arizona.[4]
Habitat[edit | edit source]
[edit]The antelope jackrabbit is found in a variety of tropic and subtropic habitats. It can be found in grassy hills or plains, preferring habitats with large, desert shrubs above long grass.[4] This species can also be found in more barren desert habitats.[1] A 2014 study focusing on ecology indicated that the ideal habitat for an antelope jackrabbit includes grassy ground cover and a mesquite overstory. This species does not prefer an arid climate; instead, antelope jackrabbits live in areas with summer precipitation amounts ranging from 90 mm to 360 mm. Unlike the black-tailed jackrabbit which survives in less humid conditions, the antelope jackrabbit inhabits locations with higher humidity.[4]
Description[edit | edit source]
[edit]The antelope jackrabbit is the largest Lepus species.[4] Its body length ranges from 52 to 58 cm (22 in) long and its tail can be 5 to 10 cm (3 in) long. Its front legs grow to be 10 to 20 cm (3.9 to 7.9 in) and the back legs can grow to be 20 to 30 cm (7.9 to 11.8 in) long. The antelope jackrabbit's ears grow to be 14-17 cm (6 in) and it can weight up to 9 lbs.[2] This species has a very large skull and a long rostrum.[1] Its ears are extremely long with white on the point and edges. The bi-colored tail is black on top and a pale grey below. The antelope jackrabbit has light grey sides, an orange neck and chest, and a back speckled with black.
Feeding
[edit]The antelope jackrabbit feeds on cacti, grasses, and other leafy vegetation. This species has been observed digging and eating eating soil in an attempt to intake minerals and other nutrients. They can be classified as folivores and graminivores. [1]
Threats
[edit]Known predators of the antelope jackrabbit include bobcats, coyotes, and golden eagles. Since antelope jackrabbits attract predators that are also a threat to livestock, they are hunted by humans to reduce potential problems.[1] This species is also hunted for human consumption or for their valuable pelt.[1]
Habitat loss also poses a threat to antelope jackrabbits because agricultural expansion is interfering with their habitats. Grazing livestock reduce the abundance of grasses and herbaceous plants in areas where antelope jackrabbits reside.[4]
Reproduction
[edit]Antelope jackrabbits breed from December to September and the gestation period is roughly six weeks long. Females have up to four liters per year and liter sizes range from one to five individuals. A baby hare, called a leveret, is born precocial; its eyes are open, it is active, and covered with fur. Young are born in shallow dirt nests that are formed by scraping the surface of the ground.
See also[edit | edit source]
[edit]- Jackalope - a fictional cross between an antelope and a jackrabbit
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- ^ a b c d e f Best, Troy (1993). "Lepus alleni". Mammalian Species: 1–8 – via BioOne.
- ^ a b c d Reid, Fiona (2006). Peterson Field Guide to Mammals of North America: Fourth Edition. New York: Houghton Mifflin Harcourt; 4 edition. pp. 357–358. ISBN 978-0395935965.
- ^ a b c Lorenzo, Consuelo; et al. (2014). "Evolutionary History of the Antelope Jackrabbit, Lepus alleni". Journal of the Arizona-Nevada Academy of Science. 45: 70–75.
{{cite journal}}: Explicit use of et al. in:|last=(help) - ^ a b c d Brown, David E.; Babb, Randall D.; Lorenzo, Consuelo; Altemus, Maria M. (2014-12-01). "Ecology of the antelope jackrabbit (Lepus alleni)". The Southwestern Naturalist. 59 (4): 577–589. doi:10.1894/JKF-47.1. ISSN 0038-4909.