Geographic contrasts between pre- and postzygotic barriers are consistent with reinforcement in Heliconius butterflies

Tyck till om SwePub Sök här!

Rosser, NeilUniv York, Dept Biol, Wentworth Way, Heslington, England; Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA USA (författare)

Identifying the traits causing reproductive isolation and the order in which they evolve is fundamental to understanding speciation. Here, we quantify prezygotic and intrinsic postzygotic isolation among allopatric, parapatric, and sympatric populations of the butterflies Heliconius elevatus and Heliconius pardalinus. Sympatric populations from the Amazon (H. elevatus and H. p. butleri) exhibit strong prezygotic isolation and rarely mate in captivity; however, hybrids are fertile. Allopatric populations from the Amazon (H. p. butleri) and Andes (H. p. sergestus) mate freely when brought together in captivity, but the female F1 hybrids are sterile. Parapatric populations (H. elevatus and H. p. sergestus) exhibit both assortative mating and sterility of female F1s. Assortative mating in sympatric populations is consistent with reinforcement in the face of gene flow, where the driving force, selection against hybrids, is due to disruption of mimicry and other ecological traits rather than hybrid sterility. In contrast, the lack of assortative mating and hybrid sterility observed in allopatric populations suggests that geographic isolation enables the evolution of intrinsic postzygotic reproductive isolation. Our results show how the types of reproductive barriers that evolve between species may depend on geography.

Queste, Lucie M.Univ York, Dept Biol, Wentworth Way, Heslington, England (författare)
Cama, BrunaUniv York, Dept Biol, Wentworth Way, Heslington, England (författare)
Edelman, Nathaniel B.Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 USA (författare)
Mann, FlorianTech Univ Carolo Wilhelmina Braunschweig, Inst Organ Chem, Braunschweig, Germany (författare)
Mori Pezo, RonaldURKU Estudios Amazon, Tarapoto, San Martin, Peru (författare)
Morris, JakeUniv York, Dept Biol, Wentworth Way, Heslington, England (författare)
Segami Marzal, Julia CarolinaUppsala universitet,Zooekologi (författare)
Velado, PatriciaBavarian State Res Ctr Agr, Dept Qual Assurance Analyt, Freising Weihenstephan, Germany (författare)
Schulz, StefanTech Univ Carolo Wilhelmina Braunschweig, Inst Organ Chem, Braunschweig, Germany (författare)
Mallet, James L. B.Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, USA (författare)
Dasmahapatra, Kanchon K.Univ York, Dept Biol, Wentworth Way, Heslington, England (författare)
Univ York, Dept Biol, Wentworth Way, Heslington, England; Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA USAUniv York, Dept Biol, Wentworth Way, Heslington, England (creator_code:org_t)

Av författaren/redakt...: Rosser, Neil; Queste, Lucie M.; Cama, Bruna; Edelman, Nathani ...; Mann, Florian; Mori Pezo, Ronal ...; visa fler...; Morris, Jake; Segami Marzal, J ...; Velado, Patricia; Schulz, Stefan; Mallet, James L. ...; Dasmahapatra, Ka ...; visa färre...

Om ämnet

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.