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Effects of Crowding on the Agonistic Behavior of the Hermit Crab Pagurus Bernhardus
Author(s) -
Hazlett Brian A.
Publication year - 1968
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1934131
Subject(s) - hermit crab , agonistic behaviour , anomura , aggression , population , crowding , population density , decapoda , ecology , biology , crustacean , psychology , social psychology , demography , neuroscience , sociology
The effects of increased population density were studied in the hermit crab Pagurus bernhardus. Without periods of adjustment between increments of population increase, the number of aggressive interactions increased rapidly, and the proportion of fights decided by physical contact increased significantly as density was increased. With period of adjustment, there were no marked increases in aggression as density increased.