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Biol Bull 158: 26-33. (February 1980)
© 1980 Marine Biological Laboratory
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INDUCED HOST ODOR ATTRACTION IN THE PEA CRAB PINNOTHERES MACULATUS

CHARLES D. DERBY 1 and JELLE ATEMA 1

1 Boston University Marine Program, Marine Biological Laboratory, Woods Hole, Massachusetts 02543

1. The pea crab Pinnotheres maculatus is a host-generalist symbiotic brachyuran. When subadult posthard and adult crabs are removed from the bivalve Mytilus edulis, Mytilus host odor increases their nonspecific movement as well as their location of the odor source. Odors from other previously recorded host species, however, generally do not affect their searching behavior.

2. Such response specificity may be due to olfactory induction to their host. Adult crabs removed from the blue mussel Mytilus edulis can be induced to respond to odor from the bay scallop Argopecten irradians concentricus. Such induction supports the plastic "chemical search image" concept.

3. Antennules are the principal sites of chemoreceptors used in host location.






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Copyright © 1980 by the Marine Biological Laboratory.