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Sökning: WFRF:(Humphries David) > (2015-2019) > Phenological shifts...

  • Lane, Jeffrey E.Univ Saskatchewan, Biol, Saskatoon, SK, Canada (författare)

Phenological shifts in North American red squirrels : disentangling the roles of phenotypic plasticity and microevolution

  • Artikel/kapitelEngelska2018

Förlag, utgivningsår, omfång ...

  • 2018-04-30
  • WILEY,2018
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-358079
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-358079URI
  • https://doi.org/10.1111/jeb.13263DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Phenological shifts are the most widely reported ecological responses to climate change, but the requirements to distinguish their causes (i.e. phenotypic plasticity vs. microevolution) are rarely met. To do so, we analysed almost two decades of parturition data from a wild population of North American red squirrels (Tamiasciurus hudsonicus). Although an observed advance in parturition date during the first decade provided putative support for climate change-driven microevolution, a closer look revealed a more complex pattern. Parturition date was heritable [h(2)=0.14 (0.07-0.21 (HPD interval)] and under phenotypic selection [=-0.14 +/- 0.06 (SE)] across the full study duration. However, the early advance reversed in the second decade. Further, selection did not act on the genetic contribution to variation in parturition date, and observed changes in predicted breeding values did not exceed those expected due to genetic drift. Instead, individuals responded plastically to environmental variation, and high food [white spruce (Picea glauca) seed] production in the first decade appears to have produced a plastic advance. In addition, there was little evidence of climate change affecting the advance, as there was neither a significant influence of spring temperature on parturition date or evidence of a change in spring temperatures across the study duration. Heritable traits not responding to selection in accordance with quantitative genetic predictions have long presented a puzzle to evolutionary ecologists. Our results on red squirrels provide empirical support for one potential solution: phenotypic selection arising from an environmental, as opposed to genetic, covariance between the phenotypic trait and annual fitness.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • McAdam, Andrew G.Univ Guelph, Integrat Biol, Guelph, ON, Canada (författare)
  • McFarlane, S. ErynUppsala universitet,Institutionen för ekologi och genetik (författare)
  • Williams, Cory T.Univ Alaska Fairbanks, Inst Arctic Biol, Fairbanks, AK USA (författare)
  • Humphries, Murray M.Nat Resource Sci, Ste Anne De Bellevue, PQ, Canada (författare)
  • Coltman, David W.Univ Alberta, Dept Biol Sci, Edmonton, AB, Canada (författare)
  • Gorrell, Jamieson C.Univ Alberta, Dept Biol Sci, Edmonton, AB, Canada (författare)
  • Boutin, StanUniv Alberta, Dept Biol Sci, Edmonton, AB, Canada (författare)
  • Univ Saskatchewan, Biol, Saskatoon, SK, CanadaUniv Guelph, Integrat Biol, Guelph, ON, Canada (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Journal of Evolutionary Biology: WILEY31:6, s. 810-8211010-061X1420-9101

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