Temporal pattern of foraging and microhabitat use by Galápagos marine iguanas, Amblyrhynchus cristatus
dc.contributor.author | Dawson, William R. | en_US |
dc.contributor.author | Buttemer, William A. | en_US |
dc.date.accessioned | 2006-09-11T19:24:26Z | |
dc.date.available | 2006-09-11T19:24:26Z | |
dc.date.issued | 1993-10 | en_US |
dc.identifier.citation | Buttemer, 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.issn | 0029-8549 | en_US |
dc.identifier.issn | 1432-1939 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/47800 | |
dc.description.abstract | We 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.extent | 1106592 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Springer-Verlag | en_US |
dc.subject.other | Life Sciences | en_US |
dc.subject.other | Thermoregulation | en_US |
dc.subject.other | Marine Iguanas | en_US |
dc.subject.other | Micrometeorology | en_US |
dc.subject.other | Foraging | en_US |
dc.subject.other | Ecology | en_US |
dc.subject.other | Plant Sciences | en_US |
dc.subject.other | Operative Temperature | en_US |
dc.title | Temporal pattern of foraging and microhabitat use by Galápagos marine iguanas, Amblyrhynchus cristatus | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Natural Resources and Environment | en_US |
dc.subject.hlbsecondlevel | Molecular, Cellular and Developmental Biology | en_US |
dc.subject.hlbsecondlevel | Ecology and Evolutionary Biology | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Biology, Museum of Zoology, University of Michigan, 48109, Ann Arbor, MI, USA; Department of Biological Sciences, University of Wollongong, 2500, Wollongong, NSW, Australia | en_US |
dc.contributor.affiliationum | Department of Biology, Museum of Zoology, University of Michigan, 48109, Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/47800/1/442_2004_Article_BF00318031.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/BF00318031 | en_US |
dc.identifier.source | Oecologia | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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