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Connective Tissues and Body Wall Structure, of the Polychaete Polyphysia Crassa {Lipobranchius Jeffreysii) and Their Significance

Published online by Cambridge University Press:  11 May 2009

Hugh Y. Elder
Hugh Y. Elder
Affiliation:
Institute of Physiology, University of Glasgow, Glasgow, W. 2, Scotland
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Extract

The polychaete Polyphysia crassa (Oersted) is unusual in possessing a well-developed body-wall connective-tissue layer which exceeds the combined thickness of the circular and longitudinal muscles. Both collagenous and elastic fibres are present in this layer. The collagen is organized as a loose three-dimensional lattice allowing longitudinal, circumferential or radial distension of the body wall and, as in other soft-bodied invertebrates, serves the functions of providing a base on which the muscles can act and of imposing limits to the extensibility of the system. The elastic fibres are organized as an apparently randomly oriented meshwork of stout fibres around the circular muscle blocks and are attached to both the circular and longitudinal muscles. Columns of elastic fibres extend radially from the supramuscular coarse meshwork through the ‘holes’ in the collagen lattice to the epidermal basement membrane. As the elastic columns extend outwards the fibres become finer and more numerous and flute out to give a wide area attachment to the epidermal basement membrane. The radial elastic columns are cross-linked by tangential elastic fibres. Although at any point the main collagen and elasticfibre bundles are oriented at right angles to one another, collagen fibres are invariably associated with the elastic fibres and the two fibre types form a single functionally inte-grated system. Polyphysia lives in flocculent, sublittoral muds and the burrowing mechanism employed involves a pronounced direct peristaltic wave of simultaneous circular and longitudinal muscle contraction which necessitates considerable radial thickening of the body wall. The functions of the elastic fibres appear to be to oppose the radial distension of the body wall which the collagen lattice permits and to control the folding of the cuticle and epidermis and the return of the collagen system after the passage of a peristaltic wave.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 52 , Issue 3 , August 1972 , pp. 747 - 764
Copyright
Copyright © Marine Biological Association of the United Kingdom 1972

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References

REFERENCES

Ashworth, J. H. 1901. The anatomy of Scalibregma inflatum, Rathke. Quart. Jl microsc. Sci., Vol. 45, pp. 237–309.Google Scholar
Batham, E. J. & Pantin, C. F. A. 1950. Muscular and hyrostatic action in the sea-anemone Metridium senile (L.). J. exp. Biol., Vol. 27, pp. 264–89.CrossRefGoogle ScholarPubMed
Chapman, G. 1953. Studies on the mesogloea of coelenterates. I. Histology and chemical proper-ties. Quart. Jl microsc. Sci., Vol. 94, pp. 155–76.Google Scholar
Chapman, G. 1958. The hydrostatic skeleton in the invertebrates. Biol. Rev., Vol. 33, pp. 338–71.CrossRefGoogle Scholar
Clark, R. B. 1960. The Fauna of the Clyde Sea area; Polychaeta. 71 pp. Millport: Scottish Marine Biological Association.Google Scholar
Clark, R. B. 1964. Dynamics in Metazoan Evolution, 313 pp. Oxford: Clarendon Press.Google Scholar
Clark, R. B. & Cowey, J. B. 1958. Factors controlling the change of shape of certain nemertean and turbellarian worms. J. exp. Biol., Vol. 35, pp. 731–48.CrossRefGoogle Scholar
Cowey, J. B. 1952. The structure and function of the basement membrane muscle system in Amphiporous lactifloreus (Nemertea). Quart. Jl microsc. Sci., Vol. 93, pp. 1–15.Google Scholar
Cunningham, J. T. & Ramage, G. A. 1888. The Polychaeta Sedentaria of the Firth of Forth. Trans. R. Soc. Edinb., Vol. 33, pp. 635–84.CrossRefGoogle Scholar
Elder, H. Y. & Owen, G. 1967. Occurrence of ‘elastic’ fibres in the invertebrates. J. Zool., Lond., Vol. 152, pp. 1–8.CrossRefGoogle Scholar
Fauvel, P. 1927. Polychétes Sédentaires. Fauna Fr., T. 16, 494 pp.Google Scholar
Gabe, M. 1953. Sur quelques applications de la coloration par la fuchsine-paraldéhyde. Bull. Microsc. appl., T. 3, pp. 152–62.Google Scholar
Gray, J. 1968. Animal Locomotion. 479 pp. London: Weidenfeld and Nicolson.Google Scholar
Harris, J. E. & Crofton, H. D. 1957. Structure and function in the nematodes: internal pressure and cuticular structure in Ascaris. J. exp. Biol., Vol. 34, pp. 116–30.CrossRefGoogle Scholar
Mcintosh, W. C. 1869. On the structure of the British nemerteans, and some new British annelids. Trans. R. Soc. Edinb., Vol. 25, pp. 305–433.CrossRefGoogle Scholar
Oersted, A. S. 1843. Annulatorum Danicorum Conspectus, Hafniae. [Not consulted.]CrossRefGoogle Scholar
Owen, G. 1955. Use of propylene phenoxetol as a relaxing agent. Nature, Lond., Vol. 175, P. 434.CrossRefGoogle Scholar
Owen, G. 1959. A new method for staining connective tissue fibres, with a note on Liang's method for nerve fibres. Quart. Jl microsc. Sci., Vol. 100, pp. 421–4.Google Scholar
Picken, L. E. R.Pryor, M. G. M. & Swann, M. M. 1947. Orientation of fibrils in natural membranes. Nature, Lond., Vol. 159, p. 434.CrossRefGoogle ScholarPubMed
Støp-Bowitz, C. 1945. Les Scalibregmiens de Norvege. Meddr. zool. Mus., Oslo. Nr. 55, pp. 63–87.Google Scholar
Støp-Bowitz, C. 1948. Sur les polychetes arctiques. Tromso Mus. Arsh., Vol. 66, pp. 1–58.Google Scholar
Wells, G. P. 1961. How lungworms move. In The Cell and the Organism (eds J. A. Ramsay and V. B. Wigglesworth), pp. 209–33. Cambridge University Press.Google Scholar