Speeding Up Microevolution: The Effects of Increasing Temperature on Selection and Genetic Variance in a Wild Bird Population

Husby, Arild; Visser, Marcel E.; Kruuk, Loeske E. B.

doi:10.1371/journal.pbio.1000585

Cited by 151 publications

(228 citation statements)

References 47 publications

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“…See Table S1 for sample sizes Sequential model building involved testing with likelihood ratio tests (LRTs) (A) the effect of adding twoway interactions between year (coded as factor) and each of all traits and if found significant, then testing (B) the effect of each trait 9 year interaction independently of the other interactions Similar to our findings, the majority of these studies reported selection gradients that were negative for laying date, with earlier laying date being favourable, and positive for clutch size, with larger clutches being beneficial (e.g. different populations in Europe : Sheldon et al 2003;Garant et al 2007;Husby et al 2011b;Teplitsky et al 2011;Porlier et al 2012 Teplitsky et al 2014) being reported for these traits depending on the study system and species studied. Interestingly, the patterns of selection we documented here for morphological traitsselection favours heavier bird, does not affect wing length-are in contrast with the temporal phenotypic trends observed in our study system for females.…”

Section: Selection Patterns: Overall and Among Selection Episodessupporting

confidence: 76%

Patterns of Fluctuating Selection on Morphological and Reproductive Traits in Female Tree Swallow (Tachycineta bicolor)

et al. 2015

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Temporally replicated studies are essential to describe and understand selection in natural populations. Selection patterns can differ among life stages representing different fitness components. Despite the increasing number of long-term studies, yearly estimates of fluctuation in strength and direction are mostly available from studies conducted on a limited number of years. Based on a population of Tree swallows (Tachycineta bicolor) monitored over 10,200 km 2 in Southern Québec, Canada, since 2004, we investigated how patterns of selection may change across breeding stages by dividing the overall selection at the nesting stage (number of fledglings produced) into hatchling (number of hatchlings produced) and fledgling (number of hatchlings having successfully fledged) selection stages. We assessed fluctuation in selection gradients on two morphological (body mass and wing length) and two reproductive (laying date and clutch size) traits in females. We found significant positive selection gradients for body mass and clutch size and negative selection gradients for laying date, though the latter only during the fledgling selection stage. We also found that selection gradients on reproductive traits significantly fluctuated in direction and/or strength among years but only during the hatchling breeding stage. Our results thus emphasize the need to consider how selection events may be fluctuating in time and among breeding stages and the importance of these patterns for the maintenance of phenotypic variation in wild populations.

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Section: Selection Patterns: Overall and Among Selection Episodessupporting

confidence: 76%

Patterns of Fluctuating Selection on Morphological and Reproductive Traits in Female Tree Swallow (Tachycineta bicolor)

et al. 2015

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“…One of these areas concerns the covariation between selection and genetic variation when both are affected by the same environmental factor 27, 84, 85 . A major assumption underlying the genetic accommodation mechanism is that there will be a positive relationship between the degree of genetic variation revealed and the strength of natural selection in novel environments.…”

Section: Ways Forward: Improving Our Understanding Of Plastic and Evomentioning

confidence: 99%

The interplay between plasticity and evolution in response to human-induced environmental change

Diamond

Martin

2016

F1000Res

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Some populations will cope with human-induced environmental change, and others will undergo extirpation; understanding the mechanisms that underlie these responses is key to forecasting responses to environmental change. In cases where organisms cannot disperse to track suitable habitats, plastic and evolved responses to environmental change will determine whether populations persist or perish. However, the majority of studies consider plasticity and evolution in isolation when in fact plasticity can shape evolution and plasticity itself can evolve. In particular, whether cryptic genetic variation exposed by environmental novelty can facilitate adaptive evolution has been a source of controversy and debate in the literature and has received even less attention in the context of human-induced environmental change. However, given that many studies indicate organisms will be unable to keep pace with environmental change, we need to understand how often and the degree to which plasticity can facilitate adaptive evolutionary change under novel environmental conditions.

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“…For example, in rich environmental conditions with ad libitum balanced food intake, among-individual variation in behavioural traits might be much higher than in a nutritionally impoverished environment (c.f. with imbalanced food availability) because the expression of genetic variation is typically increased under favourable conditions ([74, 75], but see [76]). This is because under nutritionally imbalanced conditions, most individuals fail to get enough resources (e.g.…”

Section: Multivariate Effects Of Nutritional Condition On Behaviouralmentioning

confidence: 99%

Effect of diet on the structure of animal personality

Han

Dingemanse

2015

Front Zool

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There is increasing interest in the proximate factors that underpin individual variation in suites of correlated behaviours. In this paper, we propose that dietary macronutrient composition, an underexplored environmental factor, might play a key role. Variation in macronutrient composition can lead to among-individual differentiation in single behaviours (‘personality’ ) as well as among-individual covariation between behaviours (‘behavioural syndromes’ ). Here, we argue that the nutritional balance during any life stage might affect the development of syndrome structure and the expression of genes with pleiotropic effects that influence development of multiple behaviours, hence genetic syndrome structure. We further suggest that males and females should typically differ in diet-dependent genetic syndrome structure despite a shared genetic basis. We detail how such diet-dependent multivariate gene-environment interactions can have major repercussions for the evolution of behavioural syndromes.

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Speeding Up Microevolution: The Effects of Increasing Temperature on Selection and Genetic Variance in a Wild Bird Population

Cited by 151 publications

References 47 publications

Patterns of Fluctuating Selection on Morphological and Reproductive Traits in Female Tree Swallow (Tachycineta bicolor)

Patterns of Fluctuating Selection on Morphological and Reproductive Traits in Female Tree Swallow (Tachycineta bicolor)

The interplay between plasticity and evolution in response to human-induced environmental change

Effect of diet on the structure of animal personality

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