Species specificity and intraspecific variation in the chemical profiles of Heliconius butterflies across a large geographic range.

Autor: Darragh K; Department of Zoology University of Cambridge Cambridge UK.; Smithsonian Tropical Research Institute Panama City Panama., Montejo-Kovacevich G; Department of Zoology University of Cambridge Cambridge UK., Kozak KM; Smithsonian Tropical Research Institute Panama City Panama., Morrison CR; Smithsonian Tropical Research Institute Panama City Panama.; Department of Integrative Biology The University of Texas at Austin Austin TX USA., Figueiredo CME; Institute for Biological Sciences Universidade Federal do Pará Belém Brazil., Ready JS; Institute for Biological Sciences Universidade Federal do Pará Belém Brazil., Salazar C; Biology Program Faculty of Natural Sciences and Mathematics Universidad del Rosario Bogota Colombia., Linares M; Biology Program Faculty of Natural Sciences and Mathematics Universidad del Rosario Bogota Colombia., Byers KJRP; Department of Zoology University of Cambridge Cambridge UK.; Smithsonian Tropical Research Institute Panama City Panama., Merrill RM; Smithsonian Tropical Research Institute Panama City Panama.; Division of Evolutionary Biology Faculty of Biology Ludwig-Maximilians-Universität München Munich Germany., McMillan WO; Smithsonian Tropical Research Institute Panama City Panama., Schulz S; Institute of Organic Chemistry Technische Universität Braunschweig Braunschweig Germany., Jiggins CD; Department of Zoology University of Cambridge Cambridge UK.; Smithsonian Tropical Research Institute Panama City Panama.
Jazyk: angličtina
Zdroj: Ecology and evolution [Ecol Evol] 2020 Apr 03; Vol. 10 (9), pp. 3895-3918. Date of Electronic Publication: 2020 Apr 03 (Print Publication: 2020).
DOI: 10.1002/ece3.6079
Abstrakt: In many animals, mate choice is important for the maintenance of reproductive isolation between species. Traits important for mate choice and behavioral isolation are predicted to be under strong stabilizing selection within species; however, such traits can also exhibit variation at the population level driven by neutral and adaptive evolutionary processes. Here, we describe patterns of divergence among androconial and genital chemical profiles at inter- and intraspecific levels in mimetic Heliconius butterflies. Most variation in chemical bouquets was found between species, but there were also quantitative differences at the population level. We found a strong correlation between interspecific chemical and genetic divergence, but this correlation varied in intraspecific comparisons. We identified "indicator" compounds characteristic of particular species that included compounds already known to elicit a behavioral response, suggesting an approach for identification of candidate compounds for future behavioral studies in novel systems. Overall, the strong signal of species identity suggests a role for these compounds in species recognition, but with additional potentially neutral variation at the population level .
Competing Interests: None declared.
(© 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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