Journal
ETHOLOGY ECOLOGY & EVOLUTION
Volume 28, Issue 1, Pages 102-109Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03949370.2014.999828
Keywords
key Canis latrans; communication; Cynomys; lagomorph; Odocoileus hemionus; rodent; Sylvilagus
Categories
Funding
- US Geological Survey
- Colorado State University
- Vermejo Park Ranch
- Turner Endangered Species Fund (TESF)
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Rodents commonly use urine to communicate with conspecifics and might do so with heterospecifics. We exposed black-tailed prairie dogs (Cynomys ludovicianus) to water (a control) and urine from different mammals and then noted whether the prairie dogs urinated near the liquid stimuli. Prairie dogs urinated near water during 15% of trials, compared to 3% of trials with coyote (Canis latrans) urine, suggesting they avoided urinating in the presence of a predatory stimulus. Prairie dogs most commonly urinated near urine from herbivores, especially Sylvilagus rabbits (89%, relative to 37% for mule deer, Odocoileus hemionus). Prairie dogs altered the spatial layout of their urine markings depending on the liquid stimulus, using localized markings near water and mule deer urine, but scattered markings near rabbit urine. These results collectively suggest that urine may function as a communicative resource between prairie dogs and rabbits. Prairie dogs and rabbits often live in close proximity and can compete for food, and prairie dogs are sometimes aggressive toward rabbits. Urine signals might enable each species to avoid agonistic encounters, while helping prairie dogs to reduce competition for food.
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