Fouling Community Structure: Effects of the Hydroid, Obelia Dichotoma, on Larval Recruitment

  • Jon D. Standing


Hydroids are common, if not always conspicuous, animals in marine epibenthic communities, frequently growing on hard substrata, plants, and other animals. Yet the ecological roles of hydroids in these communities are only beginning to be understood. Hydroid stolons may overgrow and smother small sessile animals attached to the substratum or prevent the settlement of animals requiring the substratum for attachment (Coe, 1932; McDougall, 1943). Chemical suppressants produced by some hydroids can inhibit the growth of other hydroids (Katô, et al., 1967). Furthermore, some hydroid epizoites do not occur on hydranths, suggesting either predation on settling larvae or avoidance of the nematocyst-bearing regions by motile forms (Eggleston, 1972; Hughes, 1975).


Percentage Cover Settling Surface Rocky Shore Control Plate Experimental Plate 
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Copyright information

© Springer Science+Business Media New York 1976

Authors and Affiliations

  • Jon D. Standing
    • 1
  1. 1.Department of ZoologyUniversity of CaliforniaBerkeleyUSA

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