Quantified reproductive isolation in Heliconius butterflies: Implications for introgression and hybrid speciation

Autor(es)

Garzon-Orduna, Ivonne J. ^[1] ; Brower, Andrew V. Z. ^[1]

Afiliação do(s) autor(es)

^[1] Middle Tennessee State Univ, Evolut & Ecol Grp, Dept Biol, Murfreesboro, TN 37130 - USA

• Tipo de documento: Artigo Científico
• Fonte: ECOLOGY AND EVOLUTION; v. 8, n. 2, p. 1186-1195, JAN 2018.
• Citações Web of Science: 2

Resumo

Heliconius butterflies have become a model for the study of speciation with gene flow. For adaptive introgression to take place, there must be incomplete barriers to gene exchange that allow interspecific hybridization and multiple generations of backcrossing. The recent publication of estimates of individual components of reproductive isolation between several species of butterflies in the Heliconius melpomene-H.cydno clade allowed us to calculate total reproductive isolation estimates for these species. According to these estimates, the butterflies are not as promiscuous as has been implied. Differences between species are maintained by intrinsic mechanisms, while reproductive isolation of geographical races within species is mainly due to allopatry. We discuss the implications of this strong isolation for basic aspects of the hybrid speciation with introgression hypothesis. (AU)

• Processo FAPESP: 12/50260-6 - Estruturação e evolução da biota amazônica e seu ambiente: uma abordagem integrativa
• Beneficiário: Lúcia Garcez Lohmann
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático