Empirical evaluation of genetic impacts of aquaculture and stock enhancement on wild populations based on the latest data science
| Project/Area Number |
22380110
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
General fisheries
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| Research Institution | Tokyo University of Marine Science and Technology |
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Principal Investigator |
KITADA Shuichi 東京海洋大学, 海洋科学技術研究科, 教授 (10262338)
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| Co-Investigator(Kenkyū-buntansha) |
KISHINO Hirohisa 東京大学, 農学生命科学研究科, 教授 (00141987)
HAMASAKI Katsuyuki 東京海洋大学, 海洋科学技術研究科, 准教授 (90377078)
KITAKADO Toshihide 東京海洋大学, 海洋科学技術研究科, 准教授 (40281000)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥20,410,000 (Direct Cost: ¥15,700,000、Indirect Cost: ¥4,710,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2011: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2010: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
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| Keywords | 遺伝的多様性 / 繁殖成功度 / 集団構造 / 遺伝子発現ネットワーク / グラフィカル モデル / 種苗放流 / 養殖 / 野生集団への影響 / アサリ / サワラ / マダイ / 種苗性 / 遺伝子発現 / 遺伝的影響 / 相対繁殖成功度 / ベイズ評価 / フィットネス |
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| Research Abstract |
The present study evaluated genetic impacts of aquaculture and hatchery-supplementation on wild populations. We found that the Chinese clam, an alien species, hashybridized with the native asari clam and that hybrids now represent ~50% of the clam population in theAriake Sea. We showed that hatchery fish had low genetic diversity and displaced wild fish whenstocking exceeded the food supply. We also found evidence of low genetic diversity and morphologicalchanges in cultured red sea bream due to selection of fast growing individuals for many generations.Relative reproductive success of the steelhead largely varied due to different crosses and environmentalconditions. To elucidate the mechanisms of the fitness reduction, we developed a directed graphicalmodeling of gene expression profiles and phenotypic traits.
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Report
(4 results)
Research Products
(59 results)
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[Presentation] 外来アサリの在来集団への遺伝的侵入2012
Author(s)
北田修一 , 浜崎活幸 ,藤掛千恵,浅倉佳 穂,中島香織,湯木瞳,川島汐里,Kelly Vargas, 岸野 洋久(2012)
Organizer
平成24年度日本水産学会春季大会
Place of Presentation
東京海洋大学, 東京
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[Book] サケ学大全2013
Author(s)
北田修一(帰山雅 秀, 永田光博, 中川大介編)
Publisher
北海道大学出版会
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