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Shell implosion depth and implosion morphologies in three species of Sepia (Cephalopoda) from the Mediterranean Sea

Published online by Cambridge University Press:  11 May 2009

Peter D. Ward  and
Sigurd Von Boletzky
Peter D. Ward
Affiliation:
Department of Geology, University of California, Davis, CA 95616, U.S.A.
Sigurd Von Boletzky
Affiliation:
C.N.R.S., Laboratoire Arago (L.A. 117), F-66650, Banyuls-sur-Mer, France
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Abstract

The maximum habitation depths of chambered cephalopods are dictated by the mechanical properties of the shell. All chambered cephalopods have a depth at which ambient pressure is sufficient to implode the gas-filled shell portions. Experiments on Sepia elegans D'Orbigny, S. officinalis Linne and S. orbignyana Férussac from the Mediterranean Sea show these three species to have differing depth limits and modes of shell implosion. Large S. officinalis implode between 150 and 200 m, whereas newly hatched and advanced embryonic specimens implode between 50 and 100 m. The larger S. officinalis are occasionally caught at depths greater than the implosion depth of the juvenile shell parts. They apparently avoid implosion of the early shell portions by refilling these first-formed chambers with cameral liquid later in life. Implosion in S. officinalis generally resulted in the crushing of all or most of the septa in a band extending from the embryonic region to the anterior part of the shell. Implosion was generally accompanied by fatal rupture of underlying tissue into the implosion zones. Implosion of S. orbignyana occurred between 550 and 600 m and was very different in form from that in S. officinalis, occurring mostly within the smooth zone of the last-formed several chambers, and rarely extending back into the siphuncular region (striae zone). Increasing depth caused episodic implosion of sequentially older chambers in the smooth zone. The shallower implosions were accompanied by little soft-tissue damage. Massive internal injury only occurred in the deepest implosions (700 m or greater). Implosion in S. elegans occurred betw en 400 and 600 m. Too few specimens were available to allow generalizations about morphology of implosion in this species.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 64 , Issue 4 , November 1984 , pp. 955 - 966
Copyright
Copyright © Marine Biological Association of the United Kingdom 1984

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References

Adam, W. & Rees, W. J., 1966. A review of the cephalopod family Sepiidae. Scientific Reports. John Murray Expedition, 11, 165 pp.Google Scholar
Bandel, K. & Boletzky, S. V., 1979. A comparative study of the structure, development and morphological relationships of chambered cephalopod shells. Veliger, 21, 313–354.Google Scholar
Boletzky, S. v., 1974. Effets de la sous-nutrition prolongée sur le dévelopment de la coquille de Sepia officinalis L. (Mollusca, Cephalopoda). Bulletin de la Société zoologique de France, 99, 667–673.Google Scholar
Boletzky, S. v. & Wiedmann, J., 1978. Schulp-Wachstum bei Sepia officinalis in Abhängigkeit von ókologischen Parametern. Neues Jahrbuch für Geologic und Paläontologie. Abhandlungen, 157 (1/2), 103–106.Google Scholar
Denton, E. J. & Gilpin-Brown, J. B., 1961. The distribution of gas and liquid within the cuttlebone. Journal of the Marine Biological Association of the United Kingdom, 41, 365–381.Google Scholar
Denton, E. J. & Gilpin-Brown, J.B., 1973. Floatation mechanisms in modern and fossil cephalopods. Advances in Marine Biology, 11, 197–268.CrossRefGoogle Scholar
Hoyle, W. E., 1886. Report on the Cephalopoda collected by H.M.S. Challenger during the years 1873–76. Report of the Scientific Results of the Voyage of H.M.S. Challenger 1873–76 (Zoology), 16, 245 pp.Google Scholar
Mangold, K., 1963. Biologie des céphalopodes benthiques et nectoniques de la Mer Catalane. Vie et millieu, supplement 13, 283 pp.Google Scholar
Richard, A., 1967. Influence de la température et de la nutrition sur la forme et la striation de la coquille de Sepia officinalis L. (Mollusque, Céphalopode). Compte rendu des séances de la Société de biologie, 161, 620–624.Google Scholar
Roeleveld, M., 1972. A review of the Sepiidae (Cephalopoda) of Southern Africa. Annals of the South African Museum, 59, 193–313.Google Scholar
Voss, G. & Williamson, G., 1971. Cephalopods of Hong Kong. 138 pp. Hong Kong Government Press.Google Scholar
Ward, P., Greenwald, L. & Rougerie, F., 1980. Shell implosion depth for living Nautilus macromphalus in New Caledonia. Lethaia, 13, 182.CrossRefGoogle Scholar
Ward, P. D. & Martin, A. W., 1980. Depth distribution of Nautilus pompilius in Fiji and N. macromphalus in New Caledonia. Veliger, 22, 259–264.Google Scholar