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Spawning characteristics of a lunar-synchronized spawner, the honeycomb grouper Epinephelus merra, under artificial conditions
http://hdl.handle.net/10069/00041123
http://hdl.handle.net/10069/000411238994ea06-ccee-4db9-b8f3-22cbcc5938a2
名前 / ファイル | ライセンス | アクション |
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AquacultSci68_235.pdf (650.0 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-12-23 | |||||
タイトル | ||||||
タイトル | Spawning characteristics of a lunar-synchronized spawner, the honeycomb grouper Epinephelus merra, under artificial conditions | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Honeycomb grouper | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Spawning characteristics | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Fecundity | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Lunar cycle | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Amagai, Takafumi
× Amagai, Takafumi× Murata, Ryosuke× Soyano, Kiyoshi |
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著者別名 | ||||||
姓名 | 天谷, 貴史 | |||||
著者別名 | ||||||
姓名 | 村田, 良介 | |||||
その他のタイトル | ||||||
その他のタイトル | 月周産卵魚カンモンハタ Epinephelus merra の飼育下での産卵特性 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The honeycomb grouper, which is a lunar-synchronized spawner, is an important fishery target species in Okinawa. In this study, to clarify the spawning characteristics of this species, we observed mass spawning (4 or 6 males and 20 or 22 females in 3-t tank) and single-pair spawning (one male and one female in a 200 l tank) using rearing experiments. The mass spawning results indicated spawning started 3 days after the full moon and continued for several days. However, the single-pair spawning results showed the starting date of spawning varied between individuals. The spawned eggs in 1 female were confirmed for 4 consecutive days (20,000–70,000 per day). The egg buoyancy, fertilization, and hatching rates were high in single-pair spawning until day 3. However, the number of spawned eggs, buoyancy, fertilization, and hatching rates at day 4 were extremely low, suggesting that actual spawning occurred for 3 days. 沖縄地方では重要な漁業対象種とされているカンモンハタの産卵特性を,雄4と雌20尾または雄6尾と雌22尾による飼育による集団産卵と雌雄1尾ずつ飼育によるペア産卵によって調べた。集団産卵では,満月の3日後あるいは4日後より数日間にわたって産卵が確認された。しかしペア産卵の結果,産卵の開始日は個体によって異なっている(満月の3日後から6日後)ことがわかった。ペア産卵群では4日間連続して放卵された卵が確認された。1尾の雌の産卵量は,1日あたり2,000粒から7,000粒であったが,4日目には急減した。浮上卵率,受精率,孵化率は産卵開始から3日目までは高かったが,4日目のそれらは極めて低かった。以上の結果より,本種の産卵は満月の3日目より開始され,1尾の雌が4日間連続で産卵するが,実質的な産卵は3日間であることがわかった。 |
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書誌情報 |
水産増殖 en : Aquaculture Science 巻 68, 号 3, p. 235-242, 発行日 2020-09-21 |
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出版者 | ||||||
出版者 | Japanese Society for Aquaculture Science | |||||
出版者別言語 | ||||||
日本水産増殖学会 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0371-4217 | |||||
EISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2185-0194 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.11233/aquaculturesci.68.235 | |||||
権利 | ||||||
権利情報 | © 2020 Japanese Society for Aquaculture Science | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Aquaculture Science, 68(3), pp. 235-242; 2020 |