Genetic and morphological differentiation in the hermatypic coral Galaxea fascicularis in Okinawa, Japan

• Abe Mariko

  Graduate School of Engineering and Science, University of the Ryukyus

• Watanabe Toshiki

  Division of Marine Biosciences, Ocean Research Institute, The University of Tokyo

• Suzuki Yuta

  Division of Marine Biosciences, Ocean Research Institute, The University of Tokyo

• Hidaka Michio

  Department of Chemistry, Biology and Marine Sciences, Faculty of Science, University of the Ryukyus

書誌事項

タイトル別名

• Genetic and morphological differentiation in the hermatypic coral <i>Galaxea fascicularis</i> in Okinawa, Japan
• Genetic and morphological differentiation in the hermatypic coral <italic>Galaxea fascicularis</italic> in Okinawa, Japan

抄録

Galaxea fascicularis is a common reef-building coral in the Indo-Pacific area including the Ryukyu Archipelago. A previous study on nematocyst morphology and mitochondrial genotype suggested that G. fascicularis consists of two genetically differentiated groups. However, the extent of the reproductive barrier between the two groups remains unknown. In the present study, more than 99% of G. fascicularis colonies were classified into two groups based on allelic difference of a nuclear microsatellite locus. Colonies exhibiting the hybrid genotype were rare (only two out of 224 colonies), suggesting that the reproductive barrier between the groups is nearly impermeable. The two groups were highly correlated to different nematocyst types and mitochondrial haplotypes, supporting the previous hypothesis that G. fascicularis consists of two genetically and morphologically differentiated lineages in the Ryukyu Archipelago. However, the frequencies of six color morphs were rather similar between the two groups, indicating that the evolution of the color variation had occurred before the divergence of G. fascicularis into the two lineages.

収録刊行物

• Plankton and Benthos Research

  Plankton and Benthos Research 3 (3), 174-179, 2008

  日本プランクトン学会、日本ベントス学会

キーワード

• color morph
• coral reef
• microsatellite
• nematocyst
• reproductive barrier

詳細情報

• CRID: 1390001205265372288
• NII論文ID: 10021907584
• NII書誌ID: AA12130745
• DOI: 10.3800/pbr.3.174
• ISSN: 1882627X
• ISSN: 18808247
• NDL書誌ID: 9638121
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9638121
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可