<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Flatt, Thomas</dc:creator>
  <dc:creator>Amdam, Gro V.</dc:creator>
  <dc:creator>Kirkwood, Thomas B. L.</dc:creator>
  <dc:creator>Omholt, Stig W.</dc:creator>
  <dc:date>2013-09-01</dc:date>
  <dc:description xmlns:ns0="xml" ns0:lang="en">Here we discuss life-history evolution from the perspective of adaptive phenotypic  plasticity, with a focus on polyphenisms for somatic maintenance and survival.  Polyphenisms are adaptive discrete alternative phenotypes that develop in response  to changes in the environment. We suggest that dauer larval diapause and its  associated adult phenotypes in the nematode (Caenorhabditis elegans), reproductive  dormancy in the fruit fly (Drosophila melanogaster) and other insects, and the worker  castes of the honey bee (Apis mellifera) are examples of what may be viewed as the  polyphenic regulation of somatic maintenance and survival. In these and other cases,  the same genotype can—depending upon its environment—express either of two  alternative sets of life-history phenotypes that differ markedly with respect to somatic  maintenance, survival ability, and thus life span. This plastic modulation of somatic  maintenance and survival has traditionally been underappreciated by researchers  working on aging and life history. We review the current evidence for such adaptive  life-history switches and their molecular regulation and suggest that they are caused  by temporally and/or spatially varying, stressful environments that impose diversifying  selection, thereby favoring the evolution of plasticity of somatic maintenance and  survival under strong regulatory control. By considering somatic maintenance and  survivorship from the perspective of adaptive life-history switches, we may gain novel  insights into the mechanisms and evolution of aging.</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>https://folia.unifr.ch/global/documents/307707</dc:identifier>
  <dc:identifier>https://folia.unifr.ch/documents/307707/files/2013_lhe.pdf</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:relation>info:eu-repo/semantics/altIdentifier/doi/10.1086/671484</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>License undefined</dc:rights>
  <dc:source>The Quarterly Review of Biology. - 2013, vol. 88, no. 3, p. 185–218</dc:source>
  <dc:subject>info:eu-repo/classification/udc/57</dc:subject>
  <dc:title xmlns:ns1="xml" ns1:lang="en">Life-history evolution and the polyphenic regulation of somatic maintenance and survival</dc:title>
  <dc:type>http://purl.org/coar/resource_type/c_6501</dc:type>
</oai_dc:dc>