Document Detail


Universal scaling of production rates across mammalian lineages.
MedLine Citation:
PMID:  20798111     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Over many millions of years of independent evolution, placental, marsupial and monotreme mammals have diverged conspicuously in physiology, life history and reproductive ecology. The differences in life histories are particularly striking. Compared with placentals, marsupials exhibit shorter pregnancy, smaller size of offspring at birth and longer period of lactation in the pouch. Monotremes also exhibit short pregnancy, but incubate embryos in eggs, followed by a long period of post-hatching lactation. Using a large sample of mammalian species, we show that, remarkably, despite their very different life histories, the scaling of production rates is statistically indistinguishable across mammalian lineages. Apparently all mammals are subject to the same fundamental metabolic constraints on productivity, because they share similar body designs, vascular systems and costs of producing new tissue.
Authors:
Marcus J Hamilton; Ana D Davidson; Richard M Sibly; James H Brown
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-08-26
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  278     ISSN:  1471-2954     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-12     Completed Date:  2011-05-04     Revised Date:  2013-05-28    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  560-6     Citation Subset:  IM    
Affiliation:
Department of Biology, University of New Mexico, , Albuquerque, NM 87131, USA. marcusj@unm.edu
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MeSH Terms
Descriptor/Qualifier:
Animals
Basal Metabolism
Biological Evolution*
Female
Humans
Mammals / physiology
Marsupialia / metabolism,  physiology*
Monotremata / metabolism,  physiology*
Placenta / metabolism,  physiology*
Pregnancy
Reproduction / physiology*
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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