Arid
DOI10.1016/j.jaridenv.2019.104025
Playing to their evolutionary strengths; heteromyid rodents provide opposite snake evasion strategies in the face of known and novel snakes
Bleicher, Sonny S.1,2,3,4; Kotler, Burt P.3; Downs, Cynthia J.3,5; Brown, Joel S.4
Corresponding AuthorBleicher, Sonny S.
JournalJOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
Year Published2020
Volume173
Abstract in English

We evaluated the response of two competing heteromyid rodents, Desert Pocket Mice (Chaetodipus penicillatus) and Merriam's Kangaroo Rat (Dipodomys merriami) towards risk from morphologically convergent snakes, the Sidewinder Rattlesnake (Crotalus cerastes), and the Saharan Horned Viper (Cerastes cerastes). The sidewinder and these rodents originated in the Mojave Desert and, thus, they share an evolutionary history. The Homed Viper originated in the Sahara and is an unknown and novel predator. Each snake poses a different risk for which the optimal strategy of the rodents will differ. The sidewinder belongs to a lineage that evolved heat sensing pits, allowing it to detect rodents on nights without ambient moon light, while the Homed Vipers lack this adaptation. We used Giving-up Densities as a measure of risk perception and compared their responses in relationship to microhabitat, moonlight, time and risk from other predators. Pocket mice feared both snakes and kangaroo rats acted in a relatively fearless manner. The differences between the rodents can be attributed to their snake-evasion adaptations. Kangaroo rats used their saltatorial agility which allows them to take risk while pocket mice climb out of harm's-way and enter torpor to reduce energetic costs when risk prevents foraging.


Keyword in EnglishDesert rodents Heteromyidae Vipers Adaptation Behaviour Common garden experiments Convergent evolution
SubtypeArticle
Language英语
CountryUSA ; Israel
Indexed BySCI-E
WOS IDWOS:000498317600001
WOS KeywordPREDATION RISK ; FORAGING BEHAVIOR ; DESERT RODENT ; KANGAROO RATS ; SIDEWINDER RATTLESNAKES ; MOONLIGHT AVOIDANCE ; OWL PREDATION ; BODY-SIZE ; FACILITATION ; COMPETITION
WOS SubjectEcology ; Environmental Sciences
WOS Research AreaEnvironmental Sciences & Ecology
EI Keywords2020-02-01
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/312672
Affiliation1.Washington & Lee Univ, Biol Dept, 204 W Washington St, Lexington, VA 24450 USA;
2.George Mason Univ, Dept Environm Sci & Policy, Fairfax, VA 22030 USA;
3.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Mitrani Dept Desert Ecol, IL-84990 Sede Boqer, Israel;
4.Univ Illinois, Dept Biol Sci, 845 W Taylor St,MC 066, Chicago, IL 60607 USA;
5.Hamilton Coll, Dept Biol, Clinton, NY 13323 USA
Recommended Citation
GB/T 7714
Bleicher, Sonny S.,Kotler, Burt P.,Downs, Cynthia J.,et al. Playing to their evolutionary strengths; heteromyid rodents provide opposite snake evasion strategies in the face of known and novel snakes[J],2020,173.
APA Bleicher, Sonny S.,Kotler, Burt P.,Downs, Cynthia J.,&Brown, Joel S..(2020).Playing to their evolutionary strengths; heteromyid rodents provide opposite snake evasion strategies in the face of known and novel snakes.JOURNAL OF ARID ENVIRONMENTS,173.
MLA Bleicher, Sonny S.,et al."Playing to their evolutionary strengths; heteromyid rodents provide opposite snake evasion strategies in the face of known and novel snakes".JOURNAL OF ARID ENVIRONMENTS 173(2020).
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