10.5061/DRYAD.B68HR
Saastamoinen, Marjo
University of Helsinki
Brakefield, Paul M.
Leiden University
Ovaskainen, Otso
University of Helsinki
Data from: Environmentally induced dispersal-related life history syndrome
in the tropical butterfly, Bicyclus anynana
Dryad
dataset
2012
Life History Evolution
Bicyclus anynana
2012-08-15T17:58:18Z
2012-08-15T17:58:18Z
en
https://doi.org/10.1111/j.1420-9101.2012.02602.x
2726482 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Dispersal is a key process for understanding the persistence of
populations as well as the capacity of organisms to respond to
environmental change. Therefore understanding factors that may facilitate
or constrain the evolution of dispersal is of crucial interest.
Assessments of phenotypic variation in various behavioural, physiological
and morphological traits related to insect dispersal and flight
performance are common, yet very little is known about the genetic
associations among these traits. We have used experiments on the butterfly
Bicyclus anynana to estimate genetic variation and co-variation in seven
behavioural, physiological and morphological traits related to flight
potential and hence dispersal. Our goal was to characterize the
heritabilities and genetic correlations among these traits, and thus to
understand more about the evolution of dispersal-related life-history
syndromes in butterflies. Using a version of the animal-model, we showed
that all of the traits varied between the sexes, and most were either
positively or negatively (phenotypically and/or genetically) correlated
with body size. Heritable variation was present in most traits, with the
highest heritabilities estimated for body mass and thorax ratio. The
variance of flight activity among multiple measurements for the same
individual was high even after controlling for the prevailing
environmental conditions, indicating the importance of behavioural
switching and/or inherent randomness associated with movement. A number of
dispersal-related traits showed phenotypic correlations among one another,
but only a few of these were associated with significant genetic
correlations indicating that co-variances between these traits in Bicyclus
anynana are mainly environmentally induced.
Bicyclus data_Saastamoinen et al. 2012_JEBThe file data.xls includes all
data needed to fit the animal
model.MATHEMATICA6_estimateMATHEMATICA6_estimate.nb includes the source
code needed to fit the model to data. It also illustrates the obtained
parameter estimates and the mixing of the algorithm.MathLinkLDLThe file
MathLinkLDL.exe is a linear solver that is called from the Mathematica
file.