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  • Journal of the Marine Biological Association of the United Kingdom, Volume 91, Issue 3
  • May 2011, pp. 669-675

Reproductive patterns in two deep-water solitary corals from the north-east Atlantic—Flabellum alabastrum and F. angulare (Cnidaria: Anthozoa: Scleractinia)

  • Rhian G. Waller (a1) and Paul A. Tyler (a2)
  • DOI: http://dx.doi.org/10.1017/S0025315410000822
  • Published online: 17 June 2010
Abstract

Gametogenesis and reproductive periodicity of the solitary scleractinians Flabellum alabastrum (from the Rockall Trough) and F. angulare (from the Porcupine Seabight) were investigated. Samples were collected between depths from 1370 to 2190 m for F. alabastrum and 2412 to 2467 m for F. angulare. Both species showed gonochorism with a 1:1 sex-ratio and broadcast spawning of gametes is inferred from the lack of brooded planulae. Oocyte sizes were large in both species (925 μm in F. alabastrum and 1015 μm in F. angulare), suggesting lecithotrophic larval development. Fecundity and periodicity of oocyte development differed between the two species. Flabellum alabastrum produced a maximum of 2800 oocytes per polyp quasi-continuously, whereas the deeper species F. angulare produced a maximum of 550 oocytes per polyp either seasonally or periodically. Both species showed size-dependent fecundity. The data show a decrease in oocyte size and fecundity with depth, in concordance with other deep-water scleractinian species.

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Corresponding author
Correspondence should be addressed to: R.G. Waller, School of Ocean and Earth Sciences and Technology, University of Hawaii at Manoa, 1000 Pope Road, Honolulu, HI 96822, USA email: rwaller@hawaii.edu
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This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

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Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
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