From Australian Oceans Data Network
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Owner Advantage in the fiddler crab, Uca mjoebergi. Fight data between burrow owners and natural floaters

Created 23/06/2025

Updated 23/06/2025

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Resource owners generally win contests against intruders, a phenomenon referred to as the 'Owner Advantage' (OA). Uca mjoebergi is a typical fiddler crab that is highly sociable, territorial and lives in mixed sex colonies on intertidal mudflats. Burrows are used in territory defence, for mating, and as refuge from predators and environmental stresses. Fights are common between owners and floating males who battle for ownership of the territory and burrow. Experiments were conducted from 28th Sept - 30 Dec 2006 at the lower reaches of Ludmilla Creek within East Point Reserve, 5km North of Darwin, NT. This experiment found that when attacked by naturally occurring floaters, owners were most likely to win fights. Owners won 91.9% of fights against naturally occurring floaters. There is therefore a strong ownership advantage in this species.

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Additional Info

Field Value
Title Owner Advantage in the fiddler crab, Uca mjoebergi. Fight data between burrow owners and natural floaters
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/d36c6f90-9443-4986-88ce-f411c56e3ced
Contact Point
Australian Ocean Data Network
sfayed@utas.edu.au
Reference Period 28/09/2006 - 30/12/2006
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        130.5,
        -13.0
      ],
      [
        131.0,
        -13.0
      ],
      [
        131.0,
        -12.0
      ],
      [
        130.5,
        -12.0
      ],
      [
        130.5,
        -13.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Owner Advantage in the fiddler crab, Uca mjoebergi. Fight data between burrow owners and natural floaters". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/owner-advantage-in-the-fiddler-crab-uca-mjoebergi-fight-data-between-burrow-owners-and-natural-1