Shelter size influences self-assessment of size in crayfish, Orconectes rusticus: Consequences for agonistic fights

Shelter size influences self-assessment of size in crayfish, Orconectes rusticus: Consequences... Shelter size influences self-assessment of size in crayfish, Orconectes rusticus : Consequences for agonistic fights Daniel T. Percival & Paul A. Moore 1) (Laboratory for Sensory Ecology, J.P. Scott Center for Neuroscience, Mind & Behaviour, Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, USA) (Accepted: 19 July 2009) Summary Theoretical models of animal assessment and decision strategies have assumed animals pos- sess accurate information about themselves. The imperfect nature of self-assessment could cause animals to make inaccurate decisions during agonistic encounters. By manipulating sensory information used in self-assessment in crayfish, Orconectes rusticus , it may be pos- sible to alter either decision-making paradigms or outcomes associated with agonistic en- counters. We examined the role of self-assessment in the agonistic behaviour of crayfish by using differing shelter sizes to alter self-assessment of size. Similar-sized crayfish were kept in tanks with small, medium, and large shelters (relative to body size) and subsequently were fought against size-matched, naive opponents in novel chambers to remove resource value as a variable. Crayfish in small shelter treatments initiated and won more fights than crayfish in other shelters. Crayfish in the small shelter treatment had shorter durations of fight when compared http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Behaviour Brill

Shelter size influences self-assessment of size in crayfish, Orconectes rusticus: Consequences for agonistic fights

Behaviour , Volume 147 (1): 103 – Jan 1, 2010

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Publisher
BRILL
Copyright
© 2010 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0005-7959
eISSN
1568-539X
D.O.I.
10.1163/000579509X12512685881053
Publisher site
See Article on Publisher Site

Abstract

Shelter size influences self-assessment of size in crayfish, Orconectes rusticus : Consequences for agonistic fights Daniel T. Percival & Paul A. Moore 1) (Laboratory for Sensory Ecology, J.P. Scott Center for Neuroscience, Mind & Behaviour, Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, USA) (Accepted: 19 July 2009) Summary Theoretical models of animal assessment and decision strategies have assumed animals pos- sess accurate information about themselves. The imperfect nature of self-assessment could cause animals to make inaccurate decisions during agonistic encounters. By manipulating sensory information used in self-assessment in crayfish, Orconectes rusticus , it may be pos- sible to alter either decision-making paradigms or outcomes associated with agonistic en- counters. We examined the role of self-assessment in the agonistic behaviour of crayfish by using differing shelter sizes to alter self-assessment of size. Similar-sized crayfish were kept in tanks with small, medium, and large shelters (relative to body size) and subsequently were fought against size-matched, naive opponents in novel chambers to remove resource value as a variable. Crayfish in small shelter treatments initiated and won more fights than crayfish in other shelters. Crayfish in the small shelter treatment had shorter durations of fight when compared

Journal

BehaviourBrill

Published: Jan 1, 2010

Keywords: CRAYFISH; SOCIAL HISTORY; SELF-ASSESSMENT

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