Preliminary Investigations of Burrow Defense and Intraspecific Aggression in the Sea Urchin, Strongylocentrotus purpuratus

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1983-04
Authors
Maier, Douglas
Roe, Pamela
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University of Hawai'i Press
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Abstract
Intraspecific aggressive burrow defense beha vior of the sea urchin Strongylocentrotus purpuratus was observed. An urchin occupying a burrow defends its position against intruders by moving out from the burrow and pushing the intruder away. Only spines are used in this behavior. When the intruder begins to retreat, usually within minutes, the occupant returns to the burrow. The burrow defense behavior of S. purpuratus was compared to that of the tropical urchin Echinometra lucunter.
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Maier D, Roe P. 1983. Preliminary investigations of burrow defense and intraspecific aggression in the sea urchin, Strongylocentrotus purpuratus. Pac Sci 37(2): 145-149.
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