A mechanism for visual orientation may facilitate courtship in a fiddler crab SCIE SCOPUS

Cited 13 time in WEB OF SCIENCE Cited 14 time in Scopus
Title
A mechanism for visual orientation may facilitate courtship in a fiddler crab
Author(s)
Kim, Tae Won; Christy, John H.
Publication Year
2015-03
Abstract
Some social signals are sexually selected both by female mating preferences and by male-male competition for mates. Studies of the behavioural mechanisms that mediate responses to these signals provide insight into how sexual selection operates. Courting male fiddler crabs, Uca terpsichores, sometimes build large sand structures called hoods at the openings to their burrows. Hoods attract females to males' burrows for mating because they elicit landmark orientation, a behaviour that is selected by predation. Males also orient visually to their own hoods when errors are introduced experimentally into their nonvisual mechanism for path integration. These errors occur naturally when males move far from their burrows to court females or fight neighbours. Here we explored whether courting males also use hoods as visual beacons to the location of their burrow. Crabs that rely on path integration to orient to their burrow keep their lateral axis closely aligned with the bearing home. We therefore measured and compared the distances males moved from their burrows and the maximum deviations between males' body axes and home bearings for males that did and did not build hoods, males that had their hood removed and males that had a hood added to their burrow. Males with hoods did not range further from their burrows than those without hoods, but they exhibited greater maximum deviations between their body axes and the bearings to their burrows. Hoods may facilitate courtship by allowing males to move more freely than when they rely on nonvisual path integration alone. (C) 2014 The Authors. Published on behalf of The Association for the Study of Animal Behaviour by Elsevier Ltd.
ISSN
0003-3472
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2529
DOI
10.1016/j.anbehav.2014.12.007
Bibliographic Citation
ANIMAL BEHAVIOUR, v.101, pp.61 - 66, 2015
Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Subject
UCA-LACTEA; SEXUAL SELECTION; MATE CHOICE; FEMALE PREFERENCE; FOOD AVAILABILITY; MALE COMPETITION; PILLAR FUNCTION; SENSORY TRAP; OCYPODIDAE; BEEBEI
Keywords
courtship; fiddler crab; hood; orientation errors; sexual selection; visual beacon
Type
Article
Language
English
Document Type
Article
Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
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