Communication and coexistence in a coral community |
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Authors: | B R Lassig |
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Institution: | (1) Zoology Department, University of Queensland, St. Lucia, Queensland, Australia |
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Abstract: | A large number of biotic relationships among dissimilar organisms is characteristic of tropical coral reefs. Such relationships involve at least four of the 16 species associated with the coral Pocillopora damicornis (L.) at Heron Island on the Great Barrier Reef. Behavioural interactions among the most conspicuous resident species (2 fish, 1 crab and 1 shrimp) were studied in the field under natural and experimental conditions. The inhabitants have the potential to harass, capture and eat, or exclude one another from the coral habitat but a system of signals among the residents facilitates coexistence and maintains the integrity of the community. The signals include contact and shivering movements by the fish which apparently inform the crustaceans of the fish's resident status. |
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