10.5061/DRYAD.869CF
Chirgwin, Evatt
Monash University
Marshall, Dustin J.
Monash University
Sgro, Carla M.
Monash University
Monro, Keyne
Monash University
Data from: The other 96%: can neglected sources of fitness variation offer
new insights into adaptation to global change?
Dryad
dataset
2016
larval development
maternal environmental effects
non-additive genetic effects
Galeolaria
Marine invertebrates
2016-11-04T14:43:48Z
2016-11-04T14:43:48Z
en
https://doi.org/10.1111/eva.12447
33523 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Mounting research considers whether populations may adapt to global change
based on additive genetic variance in fitness. Yet selection acts on
phenotypes, not additive genetic variance alone, meaning that persistence
and evolutionary potential in the near-term, at least, may be influenced
by other sources of fitness variation, including non-additive genetic and
maternal environmental effects. The fitness consequences of these effects,
and their environmental sensitivity, are largely unknown. Here, applying a
quantitative genetic breeding design to an ecologically-important marine
tubeworm, we examined non-additive genetic and maternal environmental
effects on fitness (larval survival) across three thermal environments. We
found that these effects are non-trivial and environment-dependent,
explaining at least 44% of all parentally-derived effects on survival at
any temperature, and 96% of parental effects at the most stressful
temperature. Unlike maternal environmental effects, which manifested at
the latter temperature only, non-additive genetic effects were
consistently significant and covaried positively across temperatures
(i.e., parental combinations that enhanced survival at one temperature
also enhanced survival at elevated temperatures). Thus, while non-additive
genetic and maternal environmental effects have long been neglected
because their evolutionary consequences are complex, unpredictable, or
seen as transient, we argue that they warrant further attention in a
rapidly warming world.
Chirgwin et al.Key to the data set are as follows. Block = experimental
run #, sire= sire ID, dam= dam ID, temp1= temperature treatment (1=17C,
2=21C, 3=25C), rep= replicate of each family in each environment, survival
= proportion of larvae that survived in each rep, Season1= period of time
data was collected (winter = 1 and summer=2).
Melbourne