From Australian Oceans Data Network
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Quantifying colour patterns on the black carapace of the fiddler crab Uca capricornis

Created 13/03/2025

Updated 13/03/2025

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Fiddler crabs are often spectacularly coloured and capable of dramatic colour changes. While the adaptive significance of variation resulting from short- or long-term colour changes is generally well known, the phenotypic diversity in colour pattern between individuals is often neglected. To fully understand the development and function of colour pattern variation, it is necessary to first describe its morphological basis and the naturally occurring diversity. - NB Colour pattern refers to the configuration of any coloured areas on the black carapace, regardless of their spectral composition. During this experiment 276 fiddler crabs of the species Uca capricornis were photographed - 117 females and 159 males. Using these pictures and a host of software programs, images were constructed that illustrate the probable colour patterns of various groups of crabs, including males and females in general, and males and females with various size classes; <8mm, 8-9.9mm, 10-11.9mm, 12-13.9mm, 14-15.9mm, 16-17.9mm, and males >18mm (no photographed females were >18mm). These images are the equivalent of an average crab's colour pattern. To more clearly illustrate the variation in colour pattern between the groups, similar images were constructed using the standard deviation of crabs coloured at each coordinate (1mm x 1mm square).

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Title Quantifying colour patterns on the black carapace of the fiddler crab Uca capricornis
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/93524112-8056-4271-a5e3-e1f56d364704
Contact Point
CSIRO Oceans & Atmosphere
Tanya.Detto@hotmail.com
Reference Period 01/11/2004 - 01/01/2005
Geospatial Coverage {"type": "Polygon", "coordinates": [[[130.5, -13.0], [131.0, -13.0], [131.0, -12.0], [130.5, -12.0], [130.5, -13.0]]]}
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "Quantifying colour patterns on the black carapace of the fiddler crab Uca capricornis". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/quantifying-colour-patterns-on-the-black-carapace-of-the-fiddler-crab-uca-capricornis1

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