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Gonad development and the planulae of the temperate Australian soft coral Capnella gaboensis

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Abstract

Capnella gaboensis Verseveldt, 1977 was sampled at four sites in Sydney Harbour, during 1981–1984. This soft coral has an annual cycle of gonad development, with gonad number reaching a peak in May several weeks prior to spawning, and gonad size reaching a peak in May–June at spawning. The gonads develop during the warm months, and colonies spawn their gametes in late autumn and early winter. Gonad development is neither synchronous within colonies nor within populations, possibly reflecting the protracted nature of spawning. The histology of the developing oocytes and spermaries is described in detail C. gaboensis is a surface-brooder. The planulae are similar in structure to the larvae of other octocorals. The larvae are benthic, settling quickly upon suitable substratum, metamorphosing into polyps with mouths, tentacles and spicules, approximately one week after settling.

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Authors and Affiliations

  1. School of Botany, University of New South Wales, P.O. Box 1, 2033, Kensington, New South Wales, Australia

    P. A. Farrant

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  1. P. A. Farrant
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Communicated by G. F. Humphrey, Sydney

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Farrant, P.A. Gonad development and the planulae of the temperate Australian soft coral Capnella gaboensis . Marine Biology 92, 381–392 (1986). https://doi.org/10.1007/BF00392679

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  • DOI: https://doi.org/10.1007/BF00392679

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