Temperature-induced maternal effects and environmental predictability

Burgess, Scott C. and Marshall, Dustin J. (2011) Temperature-induced maternal effects and environmental predictability. Journal of Experimental Biology, 214 14: 2329-2336. doi:10.1242/jeb.054718

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Author Burgess, Scott C.
Marshall, Dustin J.
Title Temperature-induced maternal effects and environmental predictability
Journal name Journal of Experimental Biology   Check publisher's open access policy
ISSN 0022-0949
Publication date 2011-07-15
Sub-type Article (original research)
DOI 10.1242/jeb.054718
Open Access Status File (Publisher version)
Volume 214
Issue 14
Start page 2329
End page 2336
Total pages 8
Place of publication Cambridge, U.K.
Publisher The Company of Biologists
Collection year 2012
Language eng
Formatted abstract
Maternal effects could influence the persistence of species under environmental change, but the adaptive significance of many empirically estimated maternal effects remains unclear. Inferences about the adaptive significance of maternal effects depend on the correlation between maternal and offspring environments, the relative importance of frequency- or density-dependent selection and whether absolute or relative fitness measures are used. Here, we combine the monitoring of the environment over time with a factorial experiment where we manipulated both the maternal and offspring environment in a marine bryozoan (Bugula neritina). We focused on temperature as our environmental variable as temperature commonly varies over short time scales in nature. We found that offspring from mothers kept in warmer water were smaller and more variable in size, but had increased dispersal potential and higher metamorphic success than offspring from mothers kept in cooler water. Our results suggest that, under frequency- or density-independent selection, mothers that experienced higher temperatures compared with lower temperatures were favoured. Under frequency- or density-dependent selection, there were indications that mothers that experienced higher temperatures would be favoured only if their offspring encountered similar (warmer) temperatures, though these results were not statistically significant. Analysis of time series data on temperature in the field shows that the maternal thermal environment is a good predictor of the temperatures offspring are likely to experience early in life. We suggest that future studies on maternal effects estimate environmental predictability and present both absolute and relative estimates of maternal fitness within each offspring environment.
Keyword Climate change impact
Larval quality
Offspring size
Phenotypic plasticity
Egg size plasticity
Affect population-dynamics
Bugula-neritina bryozoa
Offspring size
Transgenerational plasticity
Adaptive significance
Fitness consequences
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Biological Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 38 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 38 times in Scopus Article | Citations
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Created: Fri, 02 Sep 2011, 10:32:58 EST by Gail Walter on behalf of School of Biological Sciences