Data from: High temperatures reveal cryptic genetic variation in a polymorphic female sperm storage organ
Berger, David, University of Zurich
Bauerfeind, Stephanie Sandra, University of Zurich
Blanckenhorn, Wolf Ulrich, University of Zurich
Schäefer, Martin Andreas, University of Zurich
Published Jun 15, 2011 on Dryad.
Cite this dataset
Berger, David; Bauerfeind, Stephanie Sandra; Blanckenhorn, Wolf Ulrich; Schäefer, Martin Andreas (2011). Data from: High temperatures reveal cryptic genetic variation in a polymorphic female sperm storage organ [Dataset]. Dryad. https://doi.org/10.5061/dryad.gv0n8
Variation in female reproductive morphology may play a decisive role in reproductive isolation by affecting the relative fertilization success of alternative male phenotypes. Yet, knowledge of how environmental variation may influence the development of the female reproductive tract and thus alter the arena of post-copulatory sexual selection is limited. Yellow dung fly females possess either three or four sperm storage compartments, a polymorphism with documented influence on sperm precedence. We performed a quantitative genetics study including 12 populations reared at three developmental temperatures complemented by extensive field data to show that warm developmental temperatures increase the frequency of females with four compartments, revealing striking hidden genetic variation for the polymorphism. Systematic genetic differentiation in growth rate and spermathecal number along latitude, and phenotypic covariance between the traits across temperature treatments suggest that the genetic architecture underlying the polymorphism is shaped by selection on metabolic rate. Our findings illustrate how temperature can modulate the preconditions for sexual selection by differentially exposing novel variation in reproductive morphology. This implies that environmental change may substantially alter the dynamics of sexual selection. We further discuss how temperature-dependent developmental plasticity may have contributed to observed rapid evolutionary transitions in spermathecal morphology.
Natural populations sampled along a latitudinal cline within Europe. Collected in 2007 and 2009. Data from common garden experiments in 2008 & 2009 on: tibia length (body size), development time, growth rate, and Spermathecal number (3 or 4). Common garden included 3 developmental temperatures: 12, 18 or 24C. Data only on females.