georefid:2008-085528SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1073/pnas.05105501032006-01-01publicationgeorefid:2008-085528doi:10.1073/pnas.0510550103Hunt, GeneSmithsonian Institution, National Museum of Natural History, Washington, DC, United StatesauthorRoy, KaustuvUniversity of California at San Diego, United StatesauthorNational Academy of Sciences, Washington, DC, United StatespublisherdocumentHardcopyProceedings of the National Academy of Sciences of the United States of America103 (5)1347-1352Causes of macroevolutionary trends in body size, such as Cope's Rule, the tendency of body size to increase over time, remain poorly understood. We used size measurements from Cenozoic populations of the ostracode genus Poseidonamicus, in conjunction with phylogeny and paleotemperature estimates, to show that climatic cooling leads to significant increases in body size, both overall and within individual lineages. The magnitude of size increase due to Cenozoic cooling is consistent with temperature-size relationships in geographically separated modern populations (Bergmann's Rule). Thus population-level phenotypic evolution in response to climate change can be an important determinant of macroevolutionary trends in body size.completedInvertebrate paleontologyArthropodabiologic evolutionCenozoicclimate changecold toleranceCope's ruleCope-Bergmann hypothesisCrustaceaDeep Sea Drilling Projectdeep-sea environmentEocenefossil recordHoloceneInvertebrataMandibulatamarine environmentmicrofossilsNeogeneOstracodaPaleogenePoseidonamicusQuaternarysizetemperatureTertiaryvalvesEnglishgeoscientificInformationSupplemental information/data is available in the online version of this article