NDLI: Resource value differentially affects fighting success between reproductive and non-reproductive seasons

Content Provider	Springer Nature Link
Author	Sultana, Zakea Takaoka, Junko Koga, Tsuneri
Copyright Year	2013
Abstract	Inter-male competition for resources is usually studied during species’ reproductive seasons because fighting is common and conspicuous, but how this competition compares with that during the non-reproductive season is rarely investigated. Here, we compared competition for burrows between the reproductive and non-reproductive seasons in a mud crab. We conducted two natural and three experimental observations: Under natural conditions, we observed fights between residents and intruders in (1) reproductive and (2) non-reproductive seasons, and found similar results in both seasons; two factors, body size difference and residency, contributed equally to fight outcomes; (3) During the reproductive season we created an intruder by capturing a resident male and placing him in the burrow of another resident to induce a fight; (4) We repeated this but first placed a female in the burrow before introducing the intruder; findings for both experiments were similar to those for natural fights; (5) During the non-reproductive season, we repeated the third experiment and found a different result: fight outcome was determined by the difference in body size, not residency. This is the first study to show that differing subjective value of a resource between the reproductive and non-reproductive seasons affects fight outcomes.
Starting Page	203
Ending Page	209
Page Count	7
File Format	PDF
ISSN	02890771
Journal	Journal of Ethology
Volume Number	31
Issue Number	2
e-ISSN	14395444
Language	English
Publisher	Springer Japan
Publisher Date	2013-02-24
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Intertidal mud crabs Ilyoplax pusilla Contest outcomes Resource value Residency effect Body size Reproductive and non-reproductive seasons Zoology Behavioural Sciences Animal Ecology Evolutionary Biology Neurosciences
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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