Data

Neighbour-stranger relations in the fiddler crab Uca capricornis

Australian Ocean Data Network
Detto, Tanya ; Zeil, Jochen, Dr ; Backwell, Patricia, Dr ; Hemmi, Jan, Dr
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/1d0947d0-4eef-11dc-a541-00188b4c0af8&rft.title=Neighbour-stranger relations in the fiddler crab Uca capricornis&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/1d0947d0-4eef-11dc-a541-00188b4c0af8&rft.description=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.Statement: To determine whether males have a special relationship with their female neighbours we tethered different individuals near a focal male's burrow. Tethering involved gluing a short length of cotton to the carapace and tying the free end to a nail stuck in the ground, allowing the crab to move but not to leave the area. 20 focal males with female nearest neighbours and 20 with male nearest neighbours were selected. The neighbour was tethered 10cm from the focal males burrow, in the direction of the neighbours burrow. The trial ended when the focal male touched the tethered individual (approach), or after 5 minutes passed with no approach (ignore). The same focal males with unknown individuals of the same sex and size (±1mm) as the neighbour. The order of the two trials (neighbour or stranger) was random. During the stranger trial we blocked the neighbour in its burrow by covering the entrance with a flat cap. The second trial was conducted 10 minutes after the first. Parameters: Manipulation, and the number of crabs that were approached or ignored.&rft.creator=Detto, Tanya &rft.creator=Zeil, Jochen, Dr &rft.creator=Backwell, Patricia, Dr &rft.creator=Hemmi, Jan, Dr &rft.date=2007&rft.coverage=130.83298,-12.40969 130.83297,-12.40975 130.83302,-12.40975 130.83303,-12.40970 130.83298,-12.40969&rft.coverage=westlimit=130.5; southlimit=-13; eastlimit=131; northlimit=-12&rft.coverage=westlimit=130.5; southlimit=-13; eastlimit=131; northlimit=-12&rft.coverage=uplimit=0; downlimit=0&rft.coverage=uplimit=0; downlimit=0&rft_rights=Creative Commons Attribution 2.5 Australia License http://creativecommons.org/licenses/by/2.5/au/&rft_rights=The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).&rft_rights=Users are kindly requested to contact the principal investigator for authorisation before utilising or reproducing any material&rft_rights=Thumbnail may not be reproduced without prior consent from the principal investigator&rft_subject=biota&rft_subject=28 960036&rft_subject=CRUSTACEANS&rft_subject=EARTH SCIENCE&rft_subject=BIOLOGICAL CLASSIFICATION&rft_subject=ANIMALS/INVERTEBRATES&rft_subject=ARTHROPODS&rft_subject=Neighbour Relations&rft_subject=Stranger Relations&rft_subject=Behavioural Ecology&rft_subject=Ocypodidae&rft_subject=Fiddler Crab&rft_subject=Uca capricornis&rft_subject=experimental_treatment&rft_subject=number&rft.type=dataset&rft.language=English Access the data
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The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).

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Brief description

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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Statement: To determine whether males have a special relationship with their female neighbours we tethered different individuals near a focal male's burrow. Tethering involved gluing a short length of cotton to the carapace and tying the free end to a nail stuck in the ground, allowing the crab to move but not to leave the area. 20 focal males with female nearest neighbours and 20 with male nearest neighbours were selected. The neighbour was tethered 10cm from the focal males burrow, in the direction of the neighbours burrow. The trial ended when the focal male touched the tethered individual (approach), or after 5 minutes passed with no approach (ignore). The same focal males with unknown individuals of the same sex and size (±1mm) as the neighbour. The order of the two trials (neighbour or stranger) was random. During the stranger trial we blocked the neighbour in its burrow by covering the entrance with a flat cap. The second trial was conducted 10 minutes after the first. Parameters: Manipulation, and the number of crabs that were approached or ignored.

Notes

Credit
Australian Research Council (ARC) Centre for Excellence for Vision Science
Credit
Australian Research Council (ARC) Discovery Grant
Credit
The Centre of Visual Sciences (CVS, The Australian National University)
Credit
The Australian National University PhD Scholarship
Purpose
To determine whether males have a special relationship with their female neighbours.

Issued: 20 08 2007

Data time period: 2002-11 to 2006-01

This dataset is part of a larger collection

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130.83298,-12.40969 130.83297,-12.40975 130.83302,-12.40975 130.83303,-12.4097 130.83298,-12.40969

130.833,-12.40972

131,-12 131,-13 130.5,-13 130.5,-12 131,-12

130.75,-12.5

text: westlimit=130.5; southlimit=-13; eastlimit=131; northlimit=-12

text: uplimit=0; downlimit=0

Subjects
28 960036 | ANIMALS/INVERTEBRATES | ARTHROPODS | BIOLOGICAL CLASSIFICATION | Behavioural Ecology | Crustaceans | EARTH SCIENCE | Fiddler Crab | Neighbour Relations | Ocypodidae | Stranger Relations | Uca capricornis | biota | experimental_treatment | number |

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(Neighbour_stranger.xls)

uri : https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/1d0947d0-4eef-11dc-a541-00188b4c0af8/attachments/Neighbour_stranger.xls

global : 7ac5fb10-4f77-11dc-87ba-00188b4c0af8

Identifiers
  • global : 1d0947d0-4eef-11dc-a541-00188b4c0af8