10.5061/DRYAD.NP5HQBZQ0
Mérot, Claire
0000-0003-2607-7818
National Museum of Natural History
Debat, Vincent
National Museum of Natural History
Le Poul, Yann
Ludwig Maximilian University of Munich
Merrill, Richard M
Ludwig Maximilian University of Munich
Naisbit, Russell E
Swiss Federal Institute of Technology in Zurich
Tholance, Adélie
National Museum of Natural History
Jiggins, Chris
University of Cambridge
Joron, Mathieu
Centre d'Ecologie Fonctionnelle et Evolutive
Hybridization and transgressive exploration of colour pattern and wing
morphology in Heliconius butterflies
Dryad
dataset
2020
mimicry
wing shape
colour pattern
transgression
2020-04-07T00:00:00Z
2020-04-07T00:00:00Z
en
1544720 bytes
2
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Hybridization can generate novel phenotypes distinct from those of
parental lineages, a phenomenon known as transgressive trait variation.
Transgressive phenotypes might negatively or positively affect hybrid
fitness, and increase available variation. Closely related species of
Heliconius butterflies regularly produce hybrids in nature and
hybridization is thought to play a role in the diversification of novel
wing colour patterns despite strong stabilizing selection due to
interspecific mimicry. Here, we studied wing phenotypes in first and
second generation hybrids produced by controlled crosses between either
two co-mimetic species of Heliconius or between two non-mimetic species.
We quantified wing size, shape and colour pattern variation and asked
whether hybrids displayed transgressive wing phenotypes. Discrete traits
underlain by major-effect loci, such as the presence or absence of colour
patches, generate novel phenotypes. For quantitative traits, such as wing
shape or subtle colour pattern characters, hybrids only exceed the
parental range in specific dimensions of the morphological space. Overall,
our study addresses some of the challenges in defining and measuring
phenotypic transgression for multivariate traits and our data suggest that
the extent to which transgressive trait variation in hybrids contributes
to phenotypic diversity depends on the complexity and the genetic
architecture of the traits.
The data deposited here are the raw quantification of wing shape and
pattern of Heliconius butterflies resulting from controlled inter-specific
crosses and individuals from the parental species. They were obtained by
analysing wing pictures through an analysis of pattern with a method
called CPM (Le Poul et al, 2014) and geometric morphometry.
In the pattern tab, each column is a principal component of an analysis of
pattern taking into account the colour of each pixel. In the shape tab,
each column is the coordinate of the landmarks (20 for the forewing, FW,
18 for the hindwing, HW) In all tabs, 4 columns include the id of the
specimen, its sex, origin and species status (Panama: CP = H. cydno
chioneus, MP = H. melpomene rosina, MPxCP = F1 hybrid between H. cydno
chioneus and H. melpomene rosina, CPx(MPxCP)= backcross towards H. cydno
chioneus, MPx(MPxCP)= backcross towards H. melpomene rosina --- Peru: T=
H. timareta thelxinoe, M, H. melpomene amaryllis, F1= F1 hybrid between H.
timareta thelxinoe and .H melpomene amaryllis, BT= backcross towards H.
timareta thelxinoe, BM= backcross towards H. melpomene amaryllis) Original
pictures and scripts used to analyse the datasets can be provided by the
1st author (CM) upon request.