10.5061/DRYAD.TJ3PD
de Boer, Raïssa Anna
University of Antwerp
Eens, Marcel
University of Antwerp
Fransen, Erik
University of Antwerp
Müller, Wendt
University of Antwerp
Data from: Hatching asynchrony aggravates inbreeding depression in a
songbird (Serinus canaria): an inbreeding-environment interaction
Dryad
dataset
2015
Serinus canaria
Maternal Effect
Inbreeding
2015-02-10T18:36:31Z
2015-02-10T18:36:31Z
en
https://doi.org/10.1111/evo.12625
300983 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Understanding how the intensity of inbreeding depression is influenced by
stressful environmental conditions is an important area of enquiry in
various fields of biology. In birds, environmental stress during early
development is often related to hatching asynchrony; differences in age,
and thus size, impose a gradient in conditions ranging from benign (first
hatched chick) to harsh (last hatched chick). Here, we compared the effect
of hatching order on growth rate in inbred (parents are full siblings) and
outbred (parents are unrelated) canary chicks (Serinus canaria). We found
that inbreeding depression was more severe under more stressful
conditions, being most evident in later hatched chicks. Thus,
consideration of inbreeding-environment interactions is of vital
importance for our understanding of the biological significance of
inbreeding depression and hatching asynchrony. The latter is particularly
relevant given that hatching asynchrony is a widespread phenomenon,
occurring in many bird species. The exact causes of the observed
inbreeding-environment interaction are as yet unknown, but may be related
to a decrease in maternal investment in egg contents with laying position
(i.e. pre-hatching environment), or to performance of the chicks during
sibling competition and/or their resilience to food shortage (i.e.
post-hatching environment).
Growth data of inbred and outbred canary nestlingsData was collected on a
captive group of canaries. The dataset contains weights of inbred
(=parents are full sibling), and outbred (=parents are unrelated) canary
chicks until 15 days after hatching. Hatching position, hatch date, nest
identity, breeding cluster, survival until day 15, and sexe was
additionally noted for each chick.RdB-CANARYGROWTH.csv