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An Electrophysiological Analysis of Behavioural Integration in Colonial Anthozoans

  • Peter A. V. Anderson

Abstract

Coloniality has apparently arisen independently on several occasions in the Cnidaria (Hyman, 1940). In anthozoans alone there is evidence of four distinct colonial groups. The polyps that comprise anthozoan colonies, while having morphological variations consistent with the groupings of Octocorallia and Hexacorallia, all closely follow the anthozoan body plan. This structural uniformity is reflected in the constancy of certain behaviours. Thus, retraction, expansion and feeding are carried out in basically the same way by octocorallian, hexacorallian and solitary polyps (Horridge, 1957). Indeed, Buisson (1973) suggests that pennatulid polyps are even capable of the slow rhythmical contractions of column musculature typical of actinians (Batham and Pantin, 1950).

Keywords

Electrical Activity Conduction System Simultaneous Recording Retractor Muscle Autonomous Behaviour 
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Copyright information

© Springer Science+Business Media New York 1976

Authors and Affiliations

  • Peter A. V. Anderson
    • 1
  1. 1.University of California, Santa BarbaraSanta BarbaraUSA

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