Coral Reefs

, Volume 21, Issue 4, pp 325–331 | Cite as

Reproductive ecology of the deep-sea scleractinian coral Fungiacyathus marenzelleri (Vaughan, 1906) in the northeast Atlantic Ocean

  •  R. Waller
  •  P. Tyler
  •  J. Gage

Abstract.

The reproductive biology and its seasonality were examined in the deep-water, solitary coral Fungiacyathus marenzelleri from 2,200 m depth in the NE Atlantic, using histological techniques. A total of 186 corals were collected using either an Otter trawl (semi-balloon) or Agassiz trawl from the research vessel RRS Challenger between 1979 and 1991. All individuals were gonochoric, with all 48 mesenteries being fertile. A high fecundity was recorded (2,892 ±44.4 oocytes per polyp) with strong size-dependency. This species is a quasi-continuous reproducer with overlapping gametogenesis for both spermacysts and oocytes. No planulae were observed and broadcasting of gametes is inferred, with the large egg size (max. 750-µm diameter) suggesting lecithotrophic development. There is a non-significant trend towards a synchronous spawning event during June/July. Asexual fission was observed, though in low numbers.

Ahermatypic Azooxanthellate Solitary coral Gametogenesis 

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Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  •  R. Waller
    • 1
  •  P. Tyler
    • 1
  •  J. Gage
    • 2
  1. 1.Southampton Oceanography Centre, European Way, Southampton, SO14 3ZH, UK
  2. 2.Scottish Association for Marine Biology, Dunstaffnage Marine Laboratory, Oban, Argyll, PA34 4AD, UK

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