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Morphogenetic basis for phenotypic differences in hydroid competitive behaviour


FOR many plants, fungi and sessile invertebrates, the availability of habitable space often limits their size, reproductive output and survival. Intraspecific and interspecific variation in the ability to compete for space is common1–3, but the way in which competitive ability is regulated remains largely unknown. We describe here a system of intraspecific competition in the hydroid Hydractinia symbiolongicarpus in which the principal mechanisms underlying variation in competitive ability have proven amenable to experimental analysis. Competitive interactions can be aggressive, involving the induction of a specialized fighting organ called a hyperplastic stolon, or non-aggressive, in which no hyperplastic stolons are produced. Colonies display continuous variation in the ontogenetic appearance of tissues that differ in their competence to be induced to produce hyperplastic stolons. We find that the outcome and kind of competitive interaction between strains are predictable given knowledge of their morphologies. In this hydroid, complex competitive behaviour arises from a coupling of discrete morphogenetic potential of differing tissue types with continuous variation in the ontogenetic and astogenetic appearances of these tissues.

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  1. Jackson, J. B. C. in Biotic Interactions in Recent and Fossil Benthic Communities (eds Tevesz, M. J. S. & McCall, P. L.) 39–120 (Plenum, New York, 1983).

    Book  Google Scholar 

  2. Buss, L. W. in Community Structure (eds Case, T. & Diamond, J.) 517–536 (Harper and Row, New York, 1986).

    Google Scholar 

  3. Keddy, P. Competition (Chapman and Hall, London, 1989).

    Book  Google Scholar 

  4. Buss, L. W. & Yund, P. O. J. mar. biol. Ass. UK 69 (in the press).

  5. Yund, P. O., Cunningham, C. W. & Buss, L. W. Ecology 68, 971–982 (1987).

    Article  Google Scholar 

  6. Buss, L. W. & Yund, P. O. Ecology 69, 646–654 (1988).

    Article  Google Scholar 

  7. Yund, P. O. & Parker, H. M. J. exp. mar. Biol. Ecol. 125, 63–82 (1989).

    Article  Google Scholar 

  8. Hauenschild, C. Wilhelm Roux. Arch. EntwMech. Org. 147, 1–41 (1954).

    Article  CAS  Google Scholar 

  9. Hauenschild, C. Z. Naturforsch. 11, 132–138 (1956).

    Article  Google Scholar 

  10. Buss, L. W., McFadden, C. S. & Keene, D. R. Biol. Bull. 167, 139–158 (1985).

    Article  Google Scholar 

  11. Buss, L. W. & Shenk, M. A. in Defense Molecules (eds Marcholonis, J. J. & Reinisch, C.) (A. R. Liss, New York) (in the press).

  12. Müller, W. A. Wilhelm Roux. Arch. EntwMech. Org. 155, 181–268 (1964).

    Article  Google Scholar 

  13. Ivker, F. B. Biol. Bull. 143, 162–174 (1972).

    Article  Google Scholar 

  14. Lange, R., Plickert, G. & Müller, W. A. J. exp. Zool. 249, 284–292 (1989).

    Article  Google Scholar 

  15. McFadden, C. S., McFarland, M. J. & Buss, L. W. Biol. Bull. 166, 54–67 (1984).

    Article  Google Scholar 

  16. Blackstone, N. W. & Yund, P. O. Paleobiology 15, 1–10 (1989).

    Article  Google Scholar 

  17. Boardman, R. S. & Cheetam, A. H. in Animal Colonies (eds Boardman, R. S., Cheetam, A. H. & Oliver, W. A. Jr) 121–222 (Dowden, Hutchinson and Ross, Stroudsburg, Pennsylvania, 1973).

    Google Scholar 

  18. Maynard Smith, J. Evolution and the Theory of Games (Cambridge University Press, 1982).

    Book  Google Scholar 

  19. Winer, B. J. Statistical Principles in Experimental Design (McGraw-Hill, New York, 1971).

    Google Scholar 

  20. Falconer, D. S. Introduction to Quantitative Genetics (Longman, New York, 1981).

    Google Scholar 

  21. Blackstone, N. W. & Buss, L. W. Evolution (in the press).

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Buss, L., Grosberg, R. Morphogenetic basis for phenotypic differences in hydroid competitive behaviour. Nature 343, 63–66 (1990).

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