石西礁湖周辺における遺伝的に異なる2タイプのアオサンゴHeliopora coerulea（Pallas, 1766）の生殖時期推定
アオサンゴHeliopora coerulea（Pallas, 1766）には，遺伝的に異なる2系統（A，B）が見つかっているが，その生態学的な違いは不明であった。そこで本研究では，遺伝的な分化の原因として，生殖時期に違いがあるかどうかを確認するため，石西礁湖周辺で同所的に生息する2タイプの生殖時期の推定を行った。2014年6月から2017年9月にかけて計468群体を採集し，野外観察と組織観察を行った。Bでは7月中旬から下旬にかけて幼生保育が観察された。組織観察では，Aは5月から6月にかけて，Bは6月から7月にかけて卵母細胞および精巣のサイズが最大となり，その後消失ないし縮小した。このことから...
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| Published in | 日本サンゴ礁学会誌 Vol. 20; no. 1; pp. 39 - 51 |
|---|---|
| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | Japanese |
| Published |
日本サンゴ礁学会
2018
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1345-1421 1882-5710 |
| DOI | 10.3755/jcrs.20.39 |
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| Abstract | アオサンゴHeliopora coerulea（Pallas, 1766）には，遺伝的に異なる2系統（A，B）が見つかっているが，その生態学的な違いは不明であった。そこで本研究では，遺伝的な分化の原因として，生殖時期に違いがあるかどうかを確認するため，石西礁湖周辺で同所的に生息する2タイプの生殖時期の推定を行った。2014年6月から2017年9月にかけて計468群体を採集し，野外観察と組織観察を行った。Bでは7月中旬から下旬にかけて幼生保育が観察された。組織観察では，Aは5月から6月にかけて，Bは6月から7月にかけて卵母細胞および精巣のサイズが最大となり，その後消失ないし縮小した。このことから，Aは6月中旬から6月下旬にかけて，Bでは7月中旬から7月下旬にかけて放精および幼生保育・放出が起きる生殖時期であることがわかった。同一環境下でも両タイプの生殖時期が異なることから，アオサンゴの遺伝的・内因的な要因が生殖時期の違いに寄与していると考えられた。 |
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| AbstractList | アオサンゴHeliopora coerulea（Pallas, 1766）には，遺伝的に異なる2系統（A，B）が見つかっているが，その生態学的な違いは不明であった。そこで本研究では，遺伝的な分化の原因として，生殖時期に違いがあるかどうかを確認するため，石西礁湖周辺で同所的に生息する2タイプの生殖時期の推定を行った。2014年6月から2017年9月にかけて計468群体を採集し，野外観察と組織観察を行った。Bでは7月中旬から下旬にかけて幼生保育が観察された。組織観察では，Aは5月から6月にかけて，Bは6月から7月にかけて卵母細胞および精巣のサイズが最大となり，その後消失ないし縮小した。このことから，Aは6月中旬から6月下旬にかけて，Bでは7月中旬から7月下旬にかけて放精および幼生保育・放出が起きる生殖時期であることがわかった。同一環境下でも両タイプの生殖時期が異なることから，アオサンゴの遺伝的・内因的な要因が生殖時期の違いに寄与していると考えられた。 |
| Author | 上野, 光弘 北野, 裕子 谷中, 絢貴 波利井, 佐紀 香川, 浩彦 長井, 敏 斎藤, 佑太 安田, 仁奈 |
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| References | Wilkinson C (2008) Status of coral reefs of the world: 2008. Global Coral Reef Monitoring Network and Reef and Rainforest Research Centre, Townsville, 296 p Yasuda N, Nagai S, Lian CL, Hamaguchi M, Hayashibara T, Nadaoka K (2008) Identification and characterization of microsatellite loci in the blue coral Heliopora coerulea (Alcynonaria: Coenothecalia). Conserv Genet 9: 1011-1013 Fadlallah Y (1983) Sexual reproduction, development and larval biology in scleractinian corals. A Review. Coral Reefs 2: 129-150 岩尾研二（2000）造礁サンゴ産卵時刻のコントロール．みどりいし 11: 24-25 Schmidt-Roach S, Lundgren P, Miller KJ, Gerlach G, Noreen AME, Andreakis N (2013) Assessing hidden species diversity in the coral Pocillopora damicornis from Eastern Australia. Coral Reefs 32: 161-172 Villanueva RD (2015) Cryptic speciation in the stony octocoral Heliopora coerulea: temporal reproductive isolation between two growth forms. Mar Biodivers 46: 503-507, doi: 10.1007/s12526-015-0376-y 服田昌之（2008）ミドリイシサンゴ一斉産卵の謎はいまだ闇の中．みどりいし 19: 3-5 Harii S, Kayanne H, Takigawa H, Hayashibara T, Yamamoto M (2002) Larval survivorship, competency periods and settlement of two brooding corals, Heliopora coerulea and Pocillopora damicornis. Mar Biol 141: 39-46 Yasuda N, Taquet C, Nagai S, Fortes M, Fan TY, Phongsuwan N, Nadaoka K (2014) Genetic structure and cryptic speciation in the threatened reef-building coral Heliopora coerulea along Kuroshio Current. Bul Mar Sci 90: 233-255 Pritchard JK, Stephens M, Donnelly P (2000) Inference of population structure using multilocus genotype data. Genetics 155: 945-959 Bongaerts P, Riginos C, Ridgway T, Sampayo EM, Van Oppen MJH, Englebert N, Vermeulen F, Hoegh-Guldberg O (2010) Genetic divergence across habitats in the widespread coral Seriatopora hystrix and its associated Symbiodinium. PLoS One 5: e10871, doi:10.1371/journal.pone.0010871 Kayanne H, Harii S, Ide Y, Akimoto F (2002) Recovery of coral populations after the 1998 bleaching on Shiraho Reef, in the southern Ryukyus, NW Pacific. Mar Ecol Prog Ser 239: 93-103 Keshavmurthy S, Yang SY, Alamaru A, Chuang YY, Pichon M, Obura D, Fontana S, De Palmas S, Stefani F, Benzoni F, MacDonald A, Noreen AME, Chen C, Wallace CC, Pillay RM, Denis V, Amri AY, Reimer JD, Mezaki T, Sheppard C, Loya Y, Abelson A, Mohammed MS, Baker AC, Mostafavi PG, Suharsono BA, Chen CA (2013) DNA barcoding reveals the coral “laboratory-rat”, Stylophora pistillata encompasses multiple identities. Sci Rep 3: 1520, doi: 10.1038/srep01520 Liu PJ, Fan TY, Dai CF (2005) Timing of larval release by the blue coral, Heliopora coerulea, in southern Taiwan. Coral Reefs 24: 30 Ohki S, Kowalski RK, Kitanobo S, Morita M (2015) Changes in spawning time led to the speciation of the broadcast spawning corals Acropora digitifera and the cryptic species Acropora sp. 1 with similar gamete recognition systems. Coral Reefs 34: 1189-1198 Meeker ND, Hutchinson SA, Ho L, Trede NS (2007) Method for isolation of PCR-ready genomic DNA from zebrafish tissues. Biotechniques 43: 612-614 Saito Y, Ueno M, Kiatano YF, Yasuda N (2015) Potential of different reproductive timing between sympatric Heliopora coerulea lineages southeast of Iriomote Island, Japan. Bul Mar Sci 91: 397-398 Nakabayashi A, Matsumoto T, Kitano YF, Nagai S, Yasuda N (2017) Discovery of the northernmost habitat of the blue coral Heliopora coerulea: possible range expansion due to climate change? Galaxea, J Coral Reef Stud 18: 1-2 Nakajima Y, Nishikawa A, Iguchi A, Sakai K (2012) The population genetic approach delineates the species boundary of reproductively isolated corymbose acroporid corals. Mol Phylogenet Evol 63: 527-531 下池和幸（1999）慶良間列島阿嘉島において新たに確認されたイシサンゴ類の産卵と産卵パターン．みどりいし 10: 29-31 Yasuda N, Ogasawara K, Kajiwara K, Ueno M, Oki K, Taniguchi H, Kakuma S, Okaji K, Nadaoka K (2010) Latitudinal differentiation of crown-of-thorns starfish (Acanthaster planci) in the reproduction patterns through the Ryukyu Island archipelago. Plankton Benthos Res 5: 156-164 Harii S, Kayanne H (2003) Larval dispersal, recruitment, and adult distribution of the brooding stony octocoral Heliopora coerulea on Ishigaki Island, southwest Japan. Coral Reefs 22: 188-196 Toh TC, Soon Lionel Ng C, Ben Toh K, Afiq-Rosli L, Taira D, Loke H, Ming Chou L (2016) Mass brooding of the blue octocoral, Heliopora coerulea on a sedimented equatorial reef. Mar Freshwater Behav Physiol 49: 69-74 Zann LP, Bolton L (1985) The distribution, abundance and ecology of the blue coral Heliopora coerulea (Pallas) in the Pacific. Coral Reefs 4: 125-134 Babcock R (1990) Reproduction and development of the blue coral Heliopora coerulea (Alcyonaria: Coenothecalia). Mar Biol 104: 475-481 Yasuda N, Taquet C, Nagai S, Fortes M, Fan TY, Harii S, Yoshida T, Saito S, Nadaoka, K (2015) Genetic diversity, paraphyly and incomplete lineage sorting of mtDNA, ITS2 and microsatellite flanking region in closely related Heliopora species (Octocorallia). Mol Phylogenet Evol 93: 161-171. |
| References_xml | – reference: Toh TC, Soon Lionel Ng C, Ben Toh K, Afiq-Rosli L, Taira D, Loke H, Ming Chou L (2016) Mass brooding of the blue octocoral, Heliopora coerulea on a sedimented equatorial reef. Mar Freshwater Behav Physiol 49: 69-74 – reference: 服田昌之（2008）ミドリイシサンゴ一斉産卵の謎はいまだ闇の中．みどりいし 19: 3-5 – reference: 岩尾研二（2000）造礁サンゴ産卵時刻のコントロール．みどりいし 11: 24-25 – reference: Liu PJ, Fan TY, Dai CF (2005) Timing of larval release by the blue coral, Heliopora coerulea, in southern Taiwan. Coral Reefs 24: 30 – reference: Zann LP, Bolton L (1985) The distribution, abundance and ecology of the blue coral Heliopora coerulea (Pallas) in the Pacific. Coral Reefs 4: 125-134 – reference: 下池和幸（1999）慶良間列島阿嘉島において新たに確認されたイシサンゴ類の産卵と産卵パターン．みどりいし 10: 29-31 – reference: Fadlallah Y (1983) Sexual reproduction, development and larval biology in scleractinian corals. A Review. Coral Reefs 2: 129-150 – reference: Schmidt-Roach S, Lundgren P, Miller KJ, Gerlach G, Noreen AME, Andreakis N (2013) Assessing hidden species diversity in the coral Pocillopora damicornis from Eastern Australia. Coral Reefs 32: 161-172 – reference: Saito Y, Ueno M, Kiatano YF, Yasuda N (2015) Potential of different reproductive timing between sympatric Heliopora coerulea lineages southeast of Iriomote Island, Japan. Bul Mar Sci 91: 397-398 – reference: Yasuda N, Nagai S, Lian CL, Hamaguchi M, Hayashibara T, Nadaoka K (2008) Identification and characterization of microsatellite loci in the blue coral Heliopora coerulea (Alcynonaria: Coenothecalia). Conserv Genet 9: 1011-1013 – reference: Meeker ND, Hutchinson SA, Ho L, Trede NS (2007) Method for isolation of PCR-ready genomic DNA from zebrafish tissues. Biotechniques 43: 612-614 – reference: Yasuda N, Taquet C, Nagai S, Fortes M, Fan TY, Phongsuwan N, Nadaoka K (2014) Genetic structure and cryptic speciation in the threatened reef-building coral Heliopora coerulea along Kuroshio Current. Bul Mar Sci 90: 233-255 – reference: Bongaerts P, Riginos C, Ridgway T, Sampayo EM, Van Oppen MJH, Englebert N, Vermeulen F, Hoegh-Guldberg O (2010) Genetic divergence across habitats in the widespread coral Seriatopora hystrix and its associated Symbiodinium. PLoS One 5: e10871, doi:10.1371/journal.pone.0010871 – reference: Kayanne H, Harii S, Ide Y, Akimoto F (2002) Recovery of coral populations after the 1998 bleaching on Shiraho Reef, in the southern Ryukyus, NW Pacific. Mar Ecol Prog Ser 239: 93-103 – reference: Wilkinson C (2008) Status of coral reefs of the world: 2008. Global Coral Reef Monitoring Network and Reef and Rainforest Research Centre, Townsville, 296 p – reference: Yasuda N, Ogasawara K, Kajiwara K, Ueno M, Oki K, Taniguchi H, Kakuma S, Okaji K, Nadaoka K (2010) Latitudinal differentiation of crown-of-thorns starfish (Acanthaster planci) in the reproduction patterns through the Ryukyu Island archipelago. Plankton Benthos Res 5: 156-164 – reference: Harii S, Kayanne H (2003) Larval dispersal, recruitment, and adult distribution of the brooding stony octocoral Heliopora coerulea on Ishigaki Island, southwest Japan. Coral Reefs 22: 188-196 – reference: Pritchard JK, Stephens M, Donnelly P (2000) Inference of population structure using multilocus genotype data. Genetics 155: 945-959 – reference: Yasuda N, Taquet C, Nagai S, Fortes M, Fan TY, Harii S, Yoshida T, Saito S, Nadaoka, K (2015) Genetic diversity, paraphyly and incomplete lineage sorting of mtDNA, ITS2 and microsatellite flanking region in closely related Heliopora species (Octocorallia). Mol Phylogenet Evol 93: 161-171. – reference: Keshavmurthy S, Yang SY, Alamaru A, Chuang YY, Pichon M, Obura D, Fontana S, De Palmas S, Stefani F, Benzoni F, MacDonald A, Noreen AME, Chen C, Wallace CC, Pillay RM, Denis V, Amri AY, Reimer JD, Mezaki T, Sheppard C, Loya Y, Abelson A, Mohammed MS, Baker AC, Mostafavi PG, Suharsono BA, Chen CA (2013) DNA barcoding reveals the coral “laboratory-rat”, Stylophora pistillata encompasses multiple identities. Sci Rep 3: 1520, doi: 10.1038/srep01520 – reference: Harii S, Kayanne H, Takigawa H, Hayashibara T, Yamamoto M (2002) Larval survivorship, competency periods and settlement of two brooding corals, Heliopora coerulea and Pocillopora damicornis. Mar Biol 141: 39-46 – reference: Nakabayashi A, Matsumoto T, Kitano YF, Nagai S, Yasuda N (2017) Discovery of the northernmost habitat of the blue coral Heliopora coerulea: possible range expansion due to climate change? Galaxea, J Coral Reef Stud 18: 1-2 – reference: Babcock R (1990) Reproduction and development of the blue coral Heliopora coerulea (Alcyonaria: Coenothecalia). Mar Biol 104: 475-481 – reference: Nakajima Y, Nishikawa A, Iguchi A, Sakai K (2012) The population genetic approach delineates the species boundary of reproductively isolated corymbose acroporid corals. Mol Phylogenet Evol 63: 527-531 – reference: Ohki S, Kowalski RK, Kitanobo S, Morita M (2015) Changes in spawning time led to the speciation of the broadcast spawning corals Acropora digitifera and the cryptic species Acropora sp. 1 with similar gamete recognition systems. Coral Reefs 34: 1189-1198 – reference: Villanueva RD (2015) Cryptic speciation in the stony octocoral Heliopora coerulea: temporal reproductive isolation between two growth forms. Mar Biodivers 46: 503-507, doi: 10.1007/s12526-015-0376-y |
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| Snippet | アオサンゴHeliopora coerulea（Pallas, 1766）には，遺伝的に異なる2系統（A，B）が見つかっているが，その生態学的な違いは不明であった。そこで本研究では，遺伝的な分... |
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| SubjectTerms | アオサンゴ 幼生保育 生殖隔離 生物多様性 種分化 組織切片 |
| Title | 石西礁湖周辺における遺伝的に異なる2タイプのアオサンゴHeliopora coerulea（Pallas, 1766）の生殖時期推定 |
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