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Pollinator-mediated selection on flower color allele drives reinforcement.

Publication ,  Journal Article
Hopkins, R; Rausher, MD
Published in: Science (New York, N.Y.)
March 2012

Reinforcement is the process by which reduced hybrid fitness generates selection favoring the evolution of stronger prezygotic reproductive barriers between emerging species. Using common-garden field experiments, we quantified the strength of reinforcing selection in nature by demonstrating strong selection favoring an allele conferring increased pigment intensity in the plant Phlox drummondii in areas of sympatry with the closely related species Phlox cuspidata. Incomplete hybrid sterility between the two species generates selection for traits that decrease interspecies hybridization. In contrast, selection on this locus is undetectable in the absence of P. cuspidata. We demonstrate that reinforcing selection is generated by nonrandom pollinator movement, in which pollinators move less frequently between intensely pigmented P. drummondii and P. cuspidata than between lightly pigmented P. drummondii and P. cuspidata.

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Published In

Science (New York, N.Y.)

DOI

EISSN

1095-9203

ISSN

0036-8075

Publication Date

March 2012

Volume

335

Issue

6072

Start / End Page

1090 / 1092

Related Subject Headings

  • Sympatry
  • Species Specificity
  • Selection, Genetic
  • Pollination
  • Pigmentation
  • Moths
  • Magnoliopsida
  • Lepidoptera
  • Hybridization, Genetic
  • Genotype
 

Citation

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Hopkins, R., & Rausher, M. D. (2012). Pollinator-mediated selection on flower color allele drives reinforcement. Science (New York, N.Y.), 335(6072), 1090–1092. https://doi.org/10.1126/science.1215198
Hopkins, Robin, and Mark D. Rausher. “Pollinator-mediated selection on flower color allele drives reinforcement.Science (New York, N.Y.) 335, no. 6072 (March 2012): 1090–92. https://doi.org/10.1126/science.1215198.
Hopkins R, Rausher MD. Pollinator-mediated selection on flower color allele drives reinforcement. Science (New York, NY). 2012 Mar;335(6072):1090–2.
Hopkins, Robin, and Mark D. Rausher. “Pollinator-mediated selection on flower color allele drives reinforcement.Science (New York, N.Y.), vol. 335, no. 6072, Mar. 2012, pp. 1090–92. Epmc, doi:10.1126/science.1215198.
Hopkins R, Rausher MD. Pollinator-mediated selection on flower color allele drives reinforcement. Science (New York, NY). 2012 Mar;335(6072):1090–1092.
Journal cover image

Published In

Science (New York, N.Y.)

DOI

EISSN

1095-9203

ISSN

0036-8075

Publication Date

March 2012

Volume

335

Issue

6072

Start / End Page

1090 / 1092

Related Subject Headings

  • Sympatry
  • Species Specificity
  • Selection, Genetic
  • Pollination
  • Pigmentation
  • Moths
  • Magnoliopsida
  • Lepidoptera
  • Hybridization, Genetic
  • Genotype