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The mineral component of the axis and holdfast of some gorgonacean octocorals (Coelenterata: Anthozoa), with special reference to the family Gorgoniidae
Bayer, F.M.; MacIntyre, I.G. (2001). The mineral component of the axis and holdfast of some gorgonacean octocorals (Coelenterata: Anthozoa), with special reference to the family Gorgoniidae. Proc. Biol. Soc. Wash. 114(1): 309-345
In: Proceedings of the Biological Society of Washington. Biological Society of Washington: Washington. ISSN 0006-324X, more
Peer reviewed article  

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Keywords
    Gorgonacea [WoRMS]; Marine

Authors  Top 
  • Bayer, F.M.
  • MacIntyre, I.G.

Abstract
    This is the first detailed investigation of the mineral component of axes and holdfasts of Gorgonacea, including 58 species belonging to 5 families and 21 genera of Holaxonia and 4 families and 13 genera of Calcaxonia. X-ray diffraction, electron probe, and scanning electron microscope analyses indicated that aragonite or Mg-calcite occurred in most axes and holdfasts of 6 families. In marked contrast, amorphous carbonate hydroxylapatite occurred solely in the family Gorgoniidae, which in some species also had Mg-calcite or aragonite in holdfasts. These skeletal minerals appear to be taxonomically controlled. The distinctive morphology of carbonate hydroxylapatite in Gorgoniidae is illustrated by scanning electron micrographs.

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