Data from: The landscape of natural selection during early population establishment in an invasive lizard
Data files
Nov 24, 2025 version files 4.29 MB
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AnolisDB_06192020(1)(1).xlsx
4.08 MB
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CreatingCMRFileAdult(1).Rmd
113.34 KB
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CreatingCMRFileJuv.Rmd
30.55 KB
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Mark_Recapture_Metadata.txt
893 B
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Metadata_Selection.txt
1.28 KB
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README.md
3.72 KB
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SelectionData_Dryad251118.xlsx
62.51 KB
Abstract
Colonization of new habitats exposes populations to novel selective pressures, and the evolutionary dynamics of invasive species are determined by how the founding environment interacts with the phenotypes of invaders. Measuring these processes depends on measuring natural selection immediately upon colonization, which has been a logistical hurdle for understanding how selection operates in newly established populations. We established six brown anole (Anolis sagrei) populations on spoil islands in Florida and manipulated initial sex ratios to understand how natural selection differs based on the composition of founding populations. We found unpredictable spatial and temporal variance in natural selection, and selection increased in strength over time and with increasing adult density. The relationship between phenotypes and fitness in newly established populations may not be consistent over time. As a result, each colonization event by an invasive population provides the opportunity for a novel evolutionary trajectory towards either establishment or extirpation.
https://doi.org/10.5061/dryad.jq2bvq8j4
Data therein include all capture-mark recapture data, and summary data on all selection differentials (linear and quadratic).
Description of the data and file structure
Data are all within Excel format. AnolisDB_06192020(1)(1).xlsx contains all raw capture-mark-recapture data, all phenotypic data, and all survival data. NA or '.' in a corresponding cell denotes a blank value. Mark_Recapture_Metadata.txt and Metadata_Selection.txt both contain relevant column identifiers for data used in the manuscript. SelectionData_Dryad251118.xlsx contains all selection differentials presented in manuscript.
AnolisDB_06192020(1)(1).xlsx
Column Explanation
- ID Unique identifier for the individual lizard.
- ToeClip Toe-clip code used to mark individuals for capture–recapture studies.
- Trip Field trip or sampling event number.
- CapDate Date the individual was captured.
- Island Island or site where the animal was captured.
- Recap Whether the individual was a recapture (yes/no or count).
- Captured Indicator whether the lizard was captured on that date/event.
- Sex Sex of the animal (M/F)
- DaR Death on release
- Comments
- Page# Field notebook page number
- HeadL Head length (mm)
- HeadW Head width (mm)
- HindLL Hind limb length (mm)
- BackPattern Description of female back pattern
- Fecal If a fecal sample was taken
- TreeComment Note on capture tree
- 2015GenStatus If lizard was included in 2015 cohort
- Cohort Cohort indentification
- DlapArea Dewlap area (mm^2)
- SVL Snout–Vent Length, a standard body length measurement in lizards.
- ToRegen Tail regeneration status (e.g., intact, regenerated, broken).
- FullTL Full Tail Length (including regenerated portion, if present).
- TailNotes Notes about tail condition or abnormalities.
- Mass Body mass (g) of the lizard.
- Time Time of day of capture.
- Tree ID or species of tree on which the lizard was captured.
- Species Species of Anolis.
SelectionData_Dryad251118.xlsx
Column Explanations
- Age Age of animal
- Island Island label
- Trait Trait upon which selection was measured
- Year Study year for the selection analysis.
- Sex Sex of the individuals used in the study.
- Season Season or sampling period (e.g., breeding, non-breeding).
- LinearDifferential Linear selection differential (s) — strength and direction of selection on a trait.
- SE Standard error of the linear selection differential.
- F F-statistic for significance testing of linear differential.
- P p-value for the linear differential (significance).
- Trait The trait being analyzed (e.g., SVL, mass).
- QuadraticDifferential Quadratic selection differential (c) — curvature of selection (stabilizing/disruptive).
- qSE Standard error of the quadratic selection differential.
- qF F-statistic for the quadratic differential.
- qP p-value for the quadratic differential.
- Density Population density estimate during the sampling period.
- SexRatio Sex ratio of the population (proportion male or female).
- FitVariance Variance in fitness for that season/year.
- Opportunity Opportunity for selection (variance in relative fitness).
Sharing/Access information
Links to other publicly accessible locations of the data:
Code/Software
CreatingCMRFileAdult(1).Rmd and CreatingCMRFileJuv.Rmd contain code for generating capture-mark-recapture datasets for each year, island, and age class.