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Data from: Correlated evolution of conspicuous coloration and burrowing in crayfish

Cite this dataset

Graham, Zackary; Padilla Perez, Dylan J. (2024). Data from: Correlated evolution of conspicuous coloration and burrowing in crayfish [Dataset]. Dryad. https://doi.org/10.5061/dryad.w0vt4b91c

Abstract

Conspicuous colors have fascinated biologists for centuries, leading to research on the evolution and functional significance of color traits. In many cases, research suggests that many conspicuous colors are adaptive and serve some function in sexual or aposematic signaling. In other cases, a lack of evidence for the adaptive value of conspicuous colors troubles biologists, such as within organisms that live underground and are rarely exposed to the surface. Here, we use phylogenetic comparative methods to investigate color evolution throughout freshwater crayfishes that vary in burrowing ability. Within the taxa we analyzed, conspicuous colors have evolved independently over 50 times; and these conspicuous colors are more common in semi-terrestrial crayfishes that construct extensive burrows. The intuitive, but not evolutionary-justified assumption when presented these results is to assume that these colors are adaptive. But contrary to this intuition, we discuss the hypothesis that coloration in crayfish is neutral. Supporting these ideas, small population sizes and reduced gene flow within semi-terrestrial burrowing crayfishes may lead to fixation in color-phenotype mutations. Overall, our work brings into question the traditional view of animal coloration as a perfectly adapted phenotype.

README: Correlated evolution of conspicuous coloration and burrowing in crayfish

Author: Dylan Padilla
Date: 2024-06-01

GENERAL INFORMATION

  1. Title of Dataset: Data from: Correlated evolution of conspicuous coloration and burrowing in crayfish
  2. Author Information A. Principal Investigator Contact Information Name: Dylan J. Padilla Perez Institution: Arizona State University Address: School of Life Sciences Email: dpadil10@asu.edu
  3. Author Information A. Principal Investigator Contact Information Name: Zackary A. Graham Institution: West Liberty University Address: Department of Organismal Biology, Ecology, and Zoo Science Email: zackary.graham@westliberty.edu

DATA & FILE OVERVIEW

  1. Description of datasets

The data used in this study represent a subset of a dataset assembled by the lead author.

File List:

File 1 Name: 'col_data_updated.csv'

Description: Dataset used in the study. NAs indicate missing values. Column header include the following variables:

species_ID: Scientific name of the species included in the study

family: Reported family for each species

stern_phylogeny: Phylogeny used for comparative analyses.

traditional_hobbs_burrow_category: Classification of burrowing behavior according to Hobbs 1942 and Hobbs 1981

combined_burrow_category: We used a burrowing classification which separates crayfish based on their ability to create burrows in semi-terrestrial habitats or aquatic habitats. Effectively, this takes the most widely used burrowing classification formalized by Hobbs 1942 and Hobbs 1981 and combines what was previously three ecological groups (primary, secondary, and tertiary burrowers) into two groups: semi-terrestrial burrowers and aquatic burrowers.

conspic_color: Two-level factor indicating whether the species is conspicuous (yes) or not (no).

conspicous_body_color_present: Two-level factor indicating whether the species is conspicuous (yes) or not (no).

body_color_zg: Categorization of body color according to leading author.

body_color_Observer1-10: Categorization of body color according to 10 random observers.

conspicious_claw_color_present: Two-level factor indicating whether the species' claws are conspicuous (yes) or not (no).

claw_color: Categorization of claw color according to leading author

body_color_(red-orange-purple...): Two-level factor indicating whether the species' claws have a given color (1) or not (0).

File 2 Name: 'col_data.csv'

Description: This is an outdated version of the dataset described above. The variables included in this dataset can be interpreted following the same description provided above.

File 3 Name: 'stern.2017.ml.new.tree'

Description: Crayfish phylogeny based on Stern et al., 2017.

File 4 Name: 'index.Rmd'

Description: Workflow of the analyses written in rmarkdown.

File 5 Name: 'index.html'

Description: Rendered 'index.Rmd' file containing workflow of the analyses.

SHARING/ACCESS INFORMATION

  1. Links to other publicly accessible locations of the data: https://dylan-padilla.github.io/crayfish-coloration/

SESSION INFORMATION

Instrument- or software-specific information needed to interpret the data: We performed all the analyses using the free software R 4.3.2 (2023-10-31), Running under: macOS Sonoma 14.2.1.