Red vision in animals is broadly associated with lighting environment but not types of visual task

Red sensitivity is the exception rather than the norm in most animal groups. Among species with a long wavelength sensitive (LWS) photoreceptor, peak wavelength sensitivity (λmax) varies substantially and it is unclear whether this variation can be explained by visual tuning to the light environment or to visual tasks such as signalling or foraging. Here, we examine long wavelength sensitivity across a broad range of taxa showing diversity in LWS photoreceptor λmax: insects, crustaceans, arachnids, amphibians, reptiles, fish, sharks and rays. We identified 161 species with a LWS photoreceptor (λmax ≥ 550 nm). We found evidence supporting visual tuning to the light environment: terrestrial species had longer λmax than aquatic species, and of these, species from turbid shallow waters had longer λmax than those from clear or deep waters. Of the terrestrial species, diurnal species had longer λmax than nocturnal species, but we did not detect any differences across terrestrial habitats (clo..., Full details of data collection and processing are in the manuscript., R/RStudio, Red sensitivity is associated with lighting environment but not visual tasks
Authors: Bryony M. Margetts, Devi Stuart-Fox and Amanda M. Franklin

The dataset and R code in this Dryad database will run all analyses in the manuscript, and produce the figures and supplementary table.

R Script: RedVision_Analysis.rmd

This is an RMarkdown file which will run the analyses for the manuscript.

Dataset: Dataset_DRYAD.csv

Info: This dataset include all the species identified to have a long wavelength sensitive photoreceptor. For each species, we have documented environmental, behavioural and morphological variables as well as sensitivity of all photoreceptors. References for photoreceptor sensitivity data are provide.

Class: Biological classification
Order: Biological classification
Family: Biological classification
Genus: Biological classification
Species: Biological classification
Population: where applicable, population location if different populations of the same species were measured.
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