Data from: Solving the paradox of stasis: squashed stabilizing selection and the limits of detection

Voir cette notice dans le dépôt source
Description:
Despite the potential for rapid evolution, stasis is commonly observed over geological timescales – the so-called “paradox of stasis.” This paradox would be resolved if stabilizing selection were common, but stabilizing selection is infrequently detected in natural populations. We hypothesize a simple solution to this apparent disconnect: stabilizing selection is hard to detect empirically once populations have adapted to a fitness peak. To test this hypothesis, we developed an individual-based model of a population evolving under an invariant stabilizing fitness function. Stabilizing selection on the population was infrequently detected in an “empirical” sampling protocol, because (1) trait variation was low relative to the fitness peak breadth; (2) non-selective deaths masked selection; (3) populations wandered around the fitness peak; and (4) sample sizes were typically too small. Moreover, the addition of negative frequency-dependent selection further hindered detection by flattening or even dimpling the fitness peak, a phenomenon we term “squashed stabilizing selection”. Our model demonstrates that stabilizing selection provides a plausible resolution to the paradox of stasis despite its infrequent detection in nature. The key reason is that selection “erases its traces”: once populations have adapted to a fitness peak, they are no longer expected to exhibit detectable stabilizing selection.

Usage Notes:

Model realizations

A CSV file containing summaries of the results of all model realizations
realizations.csv

Per-generation data for realization 4595

Metrics for each of the 50,000 post-burn-in generations of model realization 4595.
generation_data_4595.csv

Per-generation data for realization 4631

Metrics for each of the 50,000 generations of model realization #4631
generation_data_4631.csv

Data on selective deaths per generation for realization 4595

Data on selective deaths per generation for realization 4595
selective_deaths_4595.csv

Data on selective deaths per generation for realization 4631

Data on selective deaths per generation for realization 4631
selective_deaths_4631.csv

Selection gradients

Histogram (i.e. binned) data on selection gradients from all model realizations
gradients.csv

README

Information on all files in this Dryad repository
Auteur(s) :
Haller, Benjamin C.

Haller, Benjamin C.

McGill University
et Hendry, Andrew P.

Hendry, Andrew P.

McGill University
0000-0002-4807-6667
Dépôt source:
Dryad
Éditeur(s):
Dryad
Accès:
Public
URL:
http://datadryad.org/stash/dataset/doi:10.5061/dryad.0jj03
Date de publication:
2013-09-12
Mots-clés (en):
frequency-dependent selection, selection gradient, Directional selection, fitness landscape, et disruptive selection
Identificateur:
https://doi.org/10.5061/dryad.0jj03

Information géospatiale

Il n’y a aucune information géospatiale pour cette notice.
Sélectionner le ou les éléments géospatiaux à afficher sur la carte :
Voir cette notice dans le dépôt source
Notez : Jusqu’à 1000 caractéristiques pour chaque fichier sont affichées.

Référence bibliographique

Citation selon les normes APA:
Haller, A. P., Benjamin C.Author JoinHendry. (2013). Data from: Solving the paradox of stasis: squashed stabilizing selection and the limits of detection [Data set]. Dryad. http://datadryad.org/stash/dataset/doi:10.5061/dryad.0jj03
Référence copiée dans le presse-papier
Exporter vers le gestionnaire de références bibliographiques :