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Journal of Oceanography

, Volume 58, Issue 3, pp 451–459 | Cite as

On the Polyps of the Common Jellyfish Aurelia aurita in Kagoshima Bay

  • Hiroshi Miyake
  • Makoto Terazaki
  • Yoshiko Kakinuma
Article

Abstract

There is the natural habitat of polyps of the common jellyfish Aurelia aurita in the Taniyama area, Kagoshima Bay. We examined the attachment substrata, density, colony structure and strobilation of the polyps. The polyps were observed only on the horizontal undersurface of floating piers. They attached specifically to Mytilus shells, solitary ascidians, calcareous polychaete tubes, muddy amphipod tubes and the gap space that fouling animals peeled off the substrata. The polyp colonies were distributed in patches. Spatial distribution patterns of the polyps within their colonies were uniform. Strobilation occurred during late December to March, when water temperatures were 16–17°C, and a large number of ephyrae were released. An increase in man-made structures such as floating piers in coastal areas may lead to bloomings of Aurelia aurita medusae.

Polyp Aurelia aurita artificial substrata colony distribution pattern Iδ-Index strobila floating pier undersurface 

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Copyright information

© The Oceanographic Society of Japan 2002

Authors and Affiliations

  • Hiroshi Miyake
    • 1
  • Makoto Terazaki
    • 1
  • Yoshiko Kakinuma
    • 2
  1. 1.Ocean Research InstituteUniversity of TokyoTokyoJapan
  2. 2.Faculty of ScienceKagoshima UniversityKagoshimaJapan

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