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  • Cited by 27
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    Pelster, Bernd 2013. Eel Physiology.

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    Strand, Espen Jørgensen, Christian and Huse, Geir 2005. Modelling buoyancy regulation in fishes with swimbladders: bioenergetics and behaviour. Ecological Modelling, Vol. 185, Issue. 2-4, p. 309.

    Suetsugu, Kishiko and Ohta, Suguru 2004. Functional change in the swimbladder with fish size in Coryphaenoides acrolepis. Deep Sea Research Part I: Oceanographic Research Papers, Vol. 51, Issue. 9, p. 1275.

    Yamada, Y. Zhang, H. Okamura, A. Tanaka, S. Horie, N. Mikawa, N. Utoh, T. and Oka, H. P. 2001. Morphological and histological changes in the swim bladder during maturation of the Japanese eel. Journal of Fish Biology, Vol. 58, Issue. 3, p. 804.

    Pelster, Bernd 1997. Deep-Sea Fishes.

    Flshelson, L. 1994. Comparative internal morphology of deep-sea eels, with particular emphasis on gonads and gut structure. Journal of Fish Biology, Vol. 44, Issue. 1, p. 75.

    Herring, Peter J. 1994. Reflective systems in aquatic animals. Comparative Biochemistry and Physiology Part A: Physiology, Vol. 109, Issue. 3, p. 513.

    Blaxter, J. H. S. and Batty, R. S. 1984. The herring swimbladder: loss and gain of gas. Journal of the Marine Biological Association of the United Kingdom, Vol. 64, Issue. 02, p. 441.

    McFall-Ngai, Margaret J. 1983. Adaptations for reflection of bioluminescent light in the gas bladder ofLeiognathus equulus (perciformes: Leiognathidae). Journal of Experimental Zoology, Vol. 227, Issue. 1, p. 23.

    Blaxter, J.H.S. and Hunter, J.R. 1982. Advances in Marine Biology Volume 20.

    Hickman, R. A. 1981. Densities and swimbladder development of juvenile American eels, Anguilla rostrata (Lesueur) as related to energetics of migration. Journal of Fish Biology, Vol. 18, Issue. 5, p. 507.

    Stewart, D.Bruce and Gee, John H 1981. Mechanisms of buoyancy adjustment and effects of water velocity and temperature on ability to maintain buoyancy in fathead minnows, Pimephales promelas, rafinesque. Comparative Biochemistry and Physiology Part A: Physiology, Vol. 68, Issue. 3, p. 337.

    Kleckner, Robert C 1980. Swimbladder wall guanine enhancement related to migratory depth in silver phase Anguilla rostrata. Comparative Biochemistry and Physiology Part A: Physiology, Vol. 65, Issue. 3, p. 351.

    Wittenberg, J. B. Copeland, D. E. Haedrich, F R. L. and Child, J. S. 1980. The Swimbladder of Deep-Sea Fish: The Swimbladder Wall is a Lipid-Rich Barrier to Oxygen Diffusion. Journal of the Marine Biological Association of the United Kingdom, Vol. 60, Issue. 02, p. 263.

    Blaxter, J. H. S. Denton, E. J. and Gray, J. A. B. 1979. The herring swimbladder as a gas reservoir for the acousticolateralis system. Journal of the Marine Biological Association of the United Kingdom, Vol. 59, Issue. 01, p. 1.

    Ross, L. G. 1979. The haemodynamics of gas resorption from the physoclist swimbladder: the structure and morphometrics of the oval in Pollachim virens (L).. Journal of Fish Biology, Vol. 14, Issue. 3, p. 261.

    Ross, Lindsay G. 1979. The permeability to oxygen and the guanine content of the swimbladder of a physoclist fish, Pollachius virens. Journal of the Marine Biological Association of the United Kingdom, Vol. 59, Issue. 02, p. 437.

    BLAXTER, J.H.S. and TYTLER, P. 1978. Advances in Comparative Physiology and Biochemistry Volume 7.

    Brown, D.Scott and Copeland, D.Eugene 1978. Layered membranes: A diffusion barrier to gases in teleostean swimbladders. Tissue and Cell, Vol. 10, Issue. 4, p. 785.

  • Journal of the Marine Biological Association of the United Kingdom, Volume 52, Issue 3
  • August 1972, pp. 727-746

The Permeability to Gases of the Swimbladder of the Conger Eel (Conger Conger)

  • E. J. Denton (a1), Jennifer D. Liddicoat (a1) and D. W. Taylor (a1)
  • DOI:
  • Published online: 01 May 2009

The permeability properties of the silvery walls of the swimbladders of eels (Conger conger and Anguilla anguilld) have been studied. The intact swimbladder wall is very much more impermeable to carbon dioxide, oxygen and nitrogen than ordinary connective tissue. Removal of the silvery layer of the wall, which contains crystals of guanine with a little hypoxanthine, increases the permeability about 100 times and leaves a transparent ‘epithelial’ layer only a little less permeable than connective tissue to these gases. The wall of the pneumatic duct of the conger swimbladder, which is not silvered, has permeability properties similar to those of connective tissue. In long-lasting experiments a production of carbon dioxide not coupled to oxygen usage was detected in the epithelial layer. The ratios between the diffusion constants of CO, N and O for both the silvery and epithelial layers show that diffusion probably takes place through water-filled pathways, and calculations show that impermeable overlapping crystals embedded in the silvery layer could account for its very low permeability. Two deep-sea eels were shown to have swimbladders whose walls contained about 10 times more guanine/unit area than the conger eel. The possibility that layers of guanine crystals may divide fish into compartments is discussed.

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C. Bohr 1893. The influence of section of the vagus nerve on the disengagement of gases in the air bladder of fishes. J. PhysioL, Lond., Vol. 15, pp. 494500.

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P. F. Scholander 1954. Secretion of gases against high pressures in the swimbladder of deep sea fishes. II. The rete mirabile. Biol. Bull. mar. biol. Lab., Woods Hole, Vol. 107, pp. 260–77.

J. B. Wittenberg & B. A. Wittenberg 1962. Active secretion of oxygen into the eye of fish. Nature, Lond., Vol. 194, pp. 106–7.

C. I. Wright 1933. The diffusion of carbon dioxide in tissues. J. gen. Physiol., Vol. 17, pp. 657–76.

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Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
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