Proceedings of the National Academy of Sciences of the United States of America | VOL. 117
Read

Fluctuating optimum and temporally variable selection on breeding date in birds and mammals.

Publication Date Dec 15, 2020

Abstract

Temporal variation in natural selection is predicted to strongly impact the evolution and demography of natural populations, with consequences for the rate of adaptation, evolution of plasticity, and extinction risk. Most of the theory underlying these predictions assumes a moving optimum phenotype, with predictions expressed in terms of the temporal variance and autocorrelation of this optimum. However, empirical studies seldom estimate patterns of fluctuations of an optimum phenotype, precluding further progress in connecting theory with observations. To bridge this gap, we assess the evidence for temporal variation in selection on breeding date by modeling a fitness function with a fluctuating optimum, across 39 populations of 21 wild animals, one of the largest compilations of long-term datasets with individual measurements of trait and fitness components. We find compelling evidence for fluctuations in the fitness function, causing temporal variation in the magnitude, but not the direction of selection. However, fluctuations of the optimum phenotype need not directly translate into variation in selection gradients, because their impact can be buffered by partial tracking of the optimum by the mean phenotype. Analyzing individuals that reproduce in consecutive years, we find that plastic changes track movements of the optimum phenotype across years, especially in bird species, reducing temporal variation in directional selection. This suggests that phenological plasticity has evolved to cope with fluctuations in the opti...

Concepts
Powered ByUnsilo

Temporal Variation In Selection
Breeding Date
Temporal Variation
Variation In Natural Selection
Phenological Plasticity
Evolution Of Plasticity
Optimum Phenotype
Selection Gradients
Directional Selection
Extinction Risk

Introducing Weekly Round-ups!Beta

Powered by R DiscoveryR Discovery

Round-ups are the summaries of handpicked papers around trending topics published every week. These would enable you to scan through a collection of papers and decide if the paper is relevant to you before actually investing time into reading it.

Coronavirus Research Articles published between Aug 01, 2022 to Aug 07, 2022

R DiscoveryAug 08, 2022
R DiscoveryArticles Included:  5

Introduction: The corona virus disease (COVID)-19 is a severe acute respiratory syndrome (SARS-CoV-2) which is posing a great threat to mankind and ha...

Read More

Climate change Research Articles published between Aug 01, 2022 to Aug 07, 2022

R DiscoveryAug 08, 2022
R DiscoveryArticles Included:  5

We use cookies to improve your website experience. To learn about our use of cookies and how you can manage your cookie settings, please see our Cooki...

Read More

Good health Research Articles published between Aug 01, 2022 to Aug 07, 2022

R DiscoveryAug 08, 2022
R DiscoveryArticles Included:  2

Don’t have an account? Create a Free Account If you don't remember your password, you can reset it by entering your email address and clicking the Res...

Read More

Quality Of Education Research Articles published between Aug 01, 2022 to Aug 07, 2022

R DiscoveryAug 08, 2022
R DiscoveryArticles Included:  2

Introduction: In 2014 the Accreditation Council for Graduate Medical Education modified adult training requirements for child neurology certification ...

Read More

Gender Equality Research Articles published between Aug 01, 2022 to Aug 07, 2022

R DiscoveryAug 08, 2022
R DiscoveryArticles Included:  3

Introduction: Opioid use disorder (OUD) is characterized as a problematic cycle of substance intoxication and binging, followed by associated withdraw...

Read More

Coronavirus Pandemic

You can also read COVID related content on R COVID-19

R ProductsCOVID-19

ONE PROBLEM . ONE PURPOSE . ONE PLACE

Creating the world’s largest AI-driven & human-curated collection of research, news, expert recommendations and educational resources on COVID-19

COVID-19 Dashboard

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on “as is” basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The Copyright Law.