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Title of Journal: Mar Biol

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Abbravation: Marine Biology

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Publisher

Springer Berlin Heidelberg

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ISSN

1432-1793

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Reproductive biology and larval development of the

Authors: SungJin Hwang JunIm Song
Publish Date: 2007/04/11
Volume: 152, Issue: 2, Pages: 273-284
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Abstract

Dendronephthya gigantea Verrill 1864 the dominant species in the waters surrounding Jeju Island Korea is a gonochoric internal brooder that releases its planulae from July to September The ratio of females to males in this azooxanthellate soft coral is 21 Oogenesis takes place for 12 months and spermatogenesis for 3–5 months Gametes mature as seawater temperatures increase suggesting a seasonal factor in the reproductive cycle Planulae brooded in the gastrodermal canal were expelled around the times of the full moon and the new moon a significant difference in numbers expelled was not found between day and night Ciliated planulae had negative buoyancy after planulation and showed rapid metamorphosis into a primary polyp stage within 2 daysThis research was supported mainly by the Korea Research Foundation Grant funded by the Korean Government MOEHRD KRF2003C00062 and partially by the grant Ecotechnopia 21052021007 from the Korea Ministry of Environment We would like to gratefully thank M Involti for his help in the experiment We also acknowledge SM Song for her valuable aid in statistical analysis and IY Cho for her assistance in the histological work

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