Reproductive ecology of the deep-sea scleractinian coral Fungiacyathus marenselleri (Vaughen 1906) in the northeast Atlantic Ocean

R G Waller, P A Tyler, John D Gage

Research output: Contribution to journalArticle

Abstract

The reproductive biology and its seasonality were examined in the deep-water, solitary coral Fungiacyathus marenzelleri from 2,200 in 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-mum 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.
Original languageEnglish
Pages (from-to)325-331
Number of pages7
JournalCoral Reefs
Issue number1
Publication statusPublished - 2002

Keywords

  • ANEMONES
  • STRATEGIES
  • PACIFIC
  • Marine & Freshwater Biology
  • SEXUAL REPRODUCTION
  • GAMETOGENESIS
  • ROCKALL TROUGH
  • RED-SEA
  • BIOLOGY
  • ANTHOZOA
  • REEF CORALS

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