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dc.contributor.authorDawson, William R.en_US
dc.contributor.authorButtemer, William A.en_US
dc.date.accessioned2006-09-11T19:24:26Z
dc.date.available2006-09-11T19:24:26Z
dc.date.issued1993-10en_US
dc.identifier.citationButtemer, William A.; Dawson, William R.; (1993). "Temporal pattern of foraging and microhabitat use by Galápagos marine iguanas, Amblyrhynchus cristatus ." Oecologia 96(1): 56-64. <http://hdl.handle.net/2027.42/47800>en_US
dc.identifier.issn0029-8549en_US
dc.identifier.issn1432-1939en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/47800
dc.description.abstractWe observed a colony of marine iguanas ( Amblyrhynchus cristatus ) on Isla Fernandina, Galápagos, Ecuador, while measuring local micrometeorological and tidal conditions. We found size-related differences in foraging mode, with smaller iguanas feeding intertidally during daytime low tides and larger iguanas feeding subtidally. Despite having greater opportunity, subtidal foragers did not time their foraging bouts or exploit their environment in ways that optimized their period at high body temperature. Instead, the foraging schedule of these iguanas served to maximize their rate of rewarming following emergence from the cool sea. Intertidal feeders, by contrast, showed much greater behavioral flexibility in attempting to exploit their thermal environment. We suggest that size-ordered differences in marine iguana thermoregulatory behavior reflect underlying ontogenetic changes in costs and benefits of thermoregulation due to differences in predator pressure, quantity of food and electrolytes taken at each feeding, mode of foraging, and agonistic tendencies.en_US
dc.format.extent1106592 bytes
dc.format.extent3115 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.language.isoen_US
dc.publisherSpringer-Verlagen_US
dc.subject.otherLife Sciencesen_US
dc.subject.otherThermoregulationen_US
dc.subject.otherMarine Iguanasen_US
dc.subject.otherMicrometeorologyen_US
dc.subject.otherForagingen_US
dc.subject.otherEcologyen_US
dc.subject.otherPlant Sciencesen_US
dc.subject.otherOperative Temperatureen_US
dc.titleTemporal pattern of foraging and microhabitat use by Galápagos marine iguanas, Amblyrhynchus cristatusen_US
dc.typeArticleen_US
dc.subject.hlbsecondlevelNatural Resources and Environmenten_US
dc.subject.hlbsecondlevelMolecular, Cellular and Developmental Biologyen_US
dc.subject.hlbsecondlevelEcology and Evolutionary Biologyen_US
dc.subject.hlbtoplevelHealth Sciencesen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Biology, Museum of Zoology, University of Michigan, 48109, Ann Arbor, MI, USA; Department of Biological Sciences, University of Wollongong, 2500, Wollongong, NSW, Australiaen_US
dc.contributor.affiliationumDepartment of Biology, Museum of Zoology, University of Michigan, 48109, Ann Arbor, MI, USAen_US
dc.contributor.affiliationumcampusAnn Arboren_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/47800/1/442_2004_Article_BF00318031.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1007/BF00318031en_US
dc.identifier.sourceOecologiaen_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


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