クロマグロ卵の発生と孵化に及ぼす水温の影響
書誌事項
- タイトル別名
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- Embryonic Development and Effects of Water Temperature on Hatching of the Bluefin Tuna, Thunnus thynnus.
- クロマグロ卵の発生とふ化に及ぼす水温の影響
- クロマグロラン ノ ハッセイ ト フカ ニ オヨボス スイオン ノ エイキョウ
この論文をさがす
説明
Ontogenetic development of bluefin tuna, Thunnus thynnus, eggs and the effect of water temperature on their developmental speed, time required from spawning to hatching, and hatching rate were studied. The eggs floating freely and spherical in shape with a diameter of 0.97±0.25mm (average±SD, n=60) did not change during development. Their development patterns appeared to be typical of common teleost fishes. Incubation at 24°C initiated hatching from 32h after fertilization. Time required from spawning to hatching decreased exponentially with increasing of temperature. A flection point at about 25°C was found when the logarithm of time required from spawning to hatching was plotted against the incubation temperature. Incubations at temperature between 19.9 and 31.5°C could produce normally hatched larvae at certain rates; more than 50% of the total eggs hatched normally within the range of 21.2-29.8°C. At 25°C, the rate of deformed larvae among those hatched was the lowest. We thus concluded that 25°C would be the most appropriate water temperature for bluefin tuna embryonic development.
収録刊行物
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- 水産増殖
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水産増殖 48 (2), 199-207, 2000
日本水産増殖学会
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詳細情報 詳細情報について
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- CRID
- 1390282679694035456
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- NII論文ID
- 10006324517
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- NII書誌ID
- AN00124667
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- ISSN
- 21850194
- 03714217
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- NDL書誌ID
- 5451168
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- 本文言語コード
- ja
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- 資料種別
- journal article
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- データソース種別
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- JaLC
- IRDB
- NDLサーチ
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
