Foraging efficiency in the face of predation risk: a comparative study of desert rodents Academic Article uri icon

abstract

  • Foraging efficiency in the face of predation risk … Sara E. Emerson1, Burt P. Kotler2 and Franklin Sargunaraj2 … 1Department of Biology, CSU Stanislaus, Turlock, California, USA and 2Mitrani Department of Desert Ecology, Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Sede Boqer, Israel … Question: What is the adaptive significance of the heteromyid cheek pouch? Organisms: Two heteromyid rodents (Merriam's kangaroo rat, Dipodomys merriami, and desert pocket mouse, Chaetodipus penicillatus) from the Mojave Desert, and two gerbils (greater Egyptian gerbil, Gerbillus pyramidum, and Allenby's gerbil, Gerbillus andersoni allenbyi) from the Negev Desert, Israel. Site: An outdoor vivarium on the Sede Boqer campus of Ben-Gurion University of the Negev, Israel. Methods: We measured foraging time in seed trays for heteromyids and gerbils. We also measured the number of trips to food patches, and …

publication date

  • January 1, 2018