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Observations on the behaviour of the planulae larvae of Clava squamata

Published online by Cambridge University Press:  11 May 2009

G. Brinley Williams
G. Brinley Williams
Affiliation:
Marine Science Laboratories, Menai Bridge, Anglesey
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Extract

The preoccupation of many workers in recent years with the detailed analysis of the settlement behaviour of the larvae of numerous sedentary invertebrates has contributed significantly to our understanding of the various factors influencing the secondary orientation reactions of animals as formulated by Fraenkel & Gunn. Investigations with the planula larvae of hydroids along these lines has hitherto been largely ignored. The intertidal hydroid Clava squamata Müller has a distribution restricted to the larger fucoids in the littoral zone and during the summer months liberates its planulae in large numbers.

Detailed examination of the distribution of colonies indicated that the planulae probably possess clearly defined patterns of behaviour which assists them in locating substrates suitable for colonization. The planulae which are released in response to light are normally found to be photopositive on inert surfaces and to settle photopositively. On Ascophyllum, however, the normal substrate in nature, the older larvae are photonegative. The crawling activity of the planulae is considerably influenced by the texture and contour of surfaces. On rough and pitted surfaces activity is considerably reduced indicating a thigmokinetic response of the larvae. Water currents influence behaviour, planulae orientating positively to the direction of flow. The possible significance of these patterns of behaviour in the substrate selection and distribution of the species is discussed.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 45 , Issue 1 , March 1965 , pp. 257 - 273
Copyright
Copyright © Marine Biological Association of the United Kingdom 1965

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References

Allman, G. J., 1871. A Monograph of the Gymnoblastic or Tubularian Hydroids. London: Hardwicke.CrossRefGoogle Scholar
Barnes, H., 1953. Orientation and aggregation in Balanus balanus (L.). Da Costa. J. Anim. Ecol., Vol. 22, pp. 141–8.CrossRefGoogle Scholar
Barnes, H., 1955 Surface roughness and the settlement of Balanus balanoides (L.). Arch. Soc. zool-bot. fenn. Vanamo, Vol. 10, 164–7.Google Scholar
Barnes, H., Crisp, D. J. & Powell, H. T., 1951. Observations on the orientation of some species of barnacles. J. Anim. Ecol., Vol. 20, pp. 227–41.CrossRefGoogle Scholar
Cole, H. A. & Knight-Jones, E. W., 1939. Some observations and experiments on the setting behaviour of larvae of Ostrea edulis. J. Cons. int. Explor. Mer, Vol. 14, pp. 86–105.CrossRefGoogle Scholar
Crisp, D. J., 1955. The behaviour of barnacle cyprids in relation to water movement over a surface. J. exp. Biol. Vol., 32, pp. 569–90.CrossRefGoogle Scholar
Crisp, D. J. & Barnes, H., 1954. The orientation and distribution of barnacles at settlement, with particular reference to surface contour. J. Anim. Ecol., Vol. 23, pp. 142–62.CrossRefGoogle Scholar
Crisp, D. J. & Ryland, J. S., 1960. Influence of filming and of surface texture on the settlement of marine organisms. Nature, Lond., Vol. 185, p. 119CrossRefGoogle Scholar
Desilva, P. H. D. H., 1962. Experiments on choice of substrata by Spirorbis larvae. J. exp. Biol., Vol. 39, pp. 483–90.CrossRefGoogle Scholar
Fraenkel, G. S. & Gunn, D. L., 1940. The Orientation of Animals. Oxford: Clarendon Press.Google Scholar
Gee, J. M. & Knight-Jones, E. W., 1962. The morphology and larval behaviour of a new species of Spirorbis (Serpulidae). J. mar. biol. Ass. U.K., Vol. 42, pp. 641–54.CrossRefGoogle Scholar
Hincks, T., 1868. A History of the British Hydroid Zoophytes. London: Van Voorst.CrossRefGoogle Scholar
Hopkins, A. E., 1935. Attachment of larvae of the Olympia oyster, Ostrea lurida, to plane surfaces. Ecology, Vol. 16, pp. 82–7.CrossRefGoogle Scholar
Knight-Jones, E. W., 1951. Gregariousness and some other aspects of the setting behaviour of Spirorbis. J. mar. biol. Ass. U.K., Vol. 30, pp. 201–22.CrossRefGoogle Scholar
Korringa, P., 1941. Experiments and observations on swarming, pelagic life and setting in the European flat oyster, O. edulis. Arch, neerl. ZooL, VT. 5, pp. 1–249.Google Scholar
Moore, H. B., 1933. Change of orientation of a barnacle after metamorphosis. Nature, Lond., Vol. 132, pp. 969–70.CrossRefGoogle Scholar
Pallas, P. S., 1774. Spicilega Zoologica quibus novae imprimis obscurae Animalium species iconibus, descript. atque commentariis illustrantur. Berolini, 1767–1780.Google Scholar
Pomerat, C. M. & Weiss, C. M., 1946. The influence of texture and composition of surface on the attachment of sedentary marine organisms. Biol. Bull., Woods Hole, Vol. 91, pp. 57–65.CrossRefGoogle Scholar
Prytherch, H. F., 1934. The role of copper in the setting metamorphoses, and distribution of the American oyster, Ostrea virginica. Ecol. Monogr., Vol. 4, pp. 47–107CrossRefGoogle Scholar
Pyefinch, K. A. & Downing, F. S., 1949. Notes on the general biology of Tubularia larynx Ellis and Solander. J. mar. biol. Ass. U.K., Vol. 28, pp. 21–44.CrossRefGoogle Scholar
Ryland, J. S., 1959. Experiments on the selection of algal substrates, by Polyzoa larvae. J. exp. Biol., Vol. 36, pp. 613–31.CrossRefGoogle Scholar
Ryland, J. S., 1960. Experiments on the influence of light on the behaviour of Polyzoa larvae. J. exp. Biol., Vol. 37, pp. 783–800.CrossRefGoogle Scholar
Schaefer, M. B., 1937. Attachment of the larvae of Ostrea gigas, the Japanese oyster, to plane surfaces. Ecology, Vol. 18, pp. 523–72.CrossRefGoogle Scholar
Schijfsma, K., 1939. Preliminary notes on early stages in the growth of colonies of Hydractinia echinata (Flem). Arch, neerl. Zool., T. 4, pp. 93–102.Google Scholar
Visscher, J. P., 1928. Reactions of the cyprid larvae of barnacles at the time of attachment. Biol. Bull., Woods Hole, Vol. 54, pp. 327–335.CrossRefGoogle Scholar
Williams, G. B., 1964. The effects of extracts of Fucus serratus in promoting the settlement of larvae of Spirorbis borealis [Polychaeta]. J. mar. biol. Ass. U.K., Vol. 44, pp. 397–414.CrossRefGoogle Scholar
Wisley, B., 1960. Observations on the setting behaviour of the larvae of the tubeworm Spirorbis borealis Daudin (Polychaeta). Aust. J. mar. freshzv. Res., Vol. 11, pp. 55–72.CrossRefGoogle Scholar