Genetic Evidence for Hybrid Trait Speciation in Heliconius Butterflies
Camilo Salazar, Simon W Baxter, Carolina Pardo-Diaz, Grace Wu, Alison Surridge, Mauricio Linares, Eldredge Bermingham, Chris D Jiggins
PLOS GENETICS | PUBLIC LIBRARY SCIENCE | Published : 2010
Homoploid hybrid speciation is the formation of a new hybrid species without change in chromosome number. So far, there has been a lack of direct molecular evidence for hybridization generating novel traits directly involved in animal speciation. Heliconius butterflies exhibit bright aposematic color patterns that also act as cues in assortative mating. Heliconius heurippa has been proposed as a hybrid species, and its color pattern can be recreated by introgression of the H. m. melpomene red band into the genetic background of the yellow banded H. cydno cordula. This hybrid color pattern is also involved in mate choice and leads to reproductive isolation between H. heurippa and its close re..View full abstract
CDJ and SWB were supported by the Royal Society, Leverhulme Trust, and the BBSRC. CS was supported by the Smithsonian Tropical Research Institute (STRI)-Academic Programs Office and a Leverhulme Trust grant to CDJ. CP-D was supported by a STRI internship. ML was funded by COLCIENCIAS. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.