From Australian Oceans Data Network
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Neighbour-stranger relations in the fiddler crab Uca capricornis

Created 13/03/2025

Updated 13/03/2025

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A unique relationship exists between neighbouring males and females in the fiddler crab Uca capricornis. This experiment was designed to demonstrate how a male fiddler crab responds to different individuals tethered near to his burrow. The response of a male crab to the neighbour and a stranger (with similar physical characteristics) was observed. The trial ended when the focal male touched the tethered individual (approach), or after 5 minutes passed with no approach (ignore). The order of the two trials (neighbour or stranger) was random. 80 experiments were conducted in total, 20 of each of the following combinations: i) male -- neighbouring male, ii) male -- strange male, iii) male -- neighbouring female, iv) male -- strange female. The results indicate that males treat female neighbours differently to male neighbours and intruders (of either sex). They were less likely to approach a female neighbour than an unknown female tethered in the same spot. They were equally likely to approach an unknown female, a neighbouring male and an unknown male.

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Title Neighbour-stranger relations in the fiddler crab Uca capricornis
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/e171ede4-8814-4997-af57-bbe3b493bbe5
Contact Point
CSIRO Oceans & Atmosphere
Tanya.Detto@hotmail.com
Reference Period 01/11/2002 - 01/01/2006
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