Abstract:
:Synchrony can be defined as the precise coordination between independent individuals, and this behaviour is more enigmatic when it is imperfect. The traditional theoretical explanation for imperfect synchronous courtship is that it arises as a by-product of the competition between males to broadcast leading signals to attract female attention. This competition is considered an evolutionary stable strategy maintained through sexual selection. However, previous studies have revealed that leading signals are not honest indicators of male quality. We studied imperfect courtship synchrony in fiddler crabs to mainly test whether (i) signal leadership and rate are defined by male quality and (ii) signal leadership generates synchrony. Fiddler crab males wave their enlarged claws during courtship, and females prefer leading males-displaying ahead of their neighbour(s). We filmed groups of waving males in the field to detect how often individuals were leaders and if they engaged in synchrony. Overall, we found that courtship effort is not directly related to male size, a general proxy for quality. Contrary to the long-standing assumption, we also revealed that leadership is not directly related to group synchrony, but faster wave rate correlates with both leadership and synchrony. This article is part of the theme issue 'Synchrony and rhythm interaction: from the brain to behavioural ecology'.
journal_name
Philos Trans R Soc Lond B Biol Scijournal_title
Philosophical transactions of the Royal Society of London. Series B, Biological sciencesauthors
Perez DM,Klunk CL,Araujo SBLdoi
10.1098/rstb.2020.0339keywords:
["courtship","evolutionary stable strategy","fiddler crab","sexual selection","wave display"]subject
Has Abstractpub_date
2021-10-11 00:00:00pages
20200339issue
1835eissn
0962-8436issn
1471-2970journal_volume
376pub_type
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