Studies on the parasitic ecology and evolution of Nymphonella tapetis, a harmful pycnogonid endoparasitic on the commercial bivalve, Ruditapes philippinarum.
| Project/Area Number |
26292105
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Aquatic bioproduction science
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| Research Institution | Niigata University (2016)
Kyoto University (2014-2015) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
玉置 雅紀 国立研究開発法人国立環境研究所, 生物・生態系環境研究センター, 主任研究員 (00311324)
冨山 毅 広島大学, 生物圏科学研究科, 准教授 (20576897)
山田 勝雅 国立研究開発法人水産研究・教育機構, 西海区水産研究所, 任期付研究員 (80569195)
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| Research Collaborator |
TOBA Mitsuharu
YOSHINAGA Tomoyoshi
WAKUI Kunihiro
MIYAMA Yoshifumi
KANAYA Gen
Tomás Munilla León
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2014: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
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| Keywords | 分子系統解析 / マイクロサテライトマーカー / トックリウミグモ科 / アサリ潜砂 / 人工寄生実験 / 遺伝的交流 / 人為的分布拡大 / 集団遺伝解析 / 比較形態学 / 地中海産カイヤドリウミグモ / 分類学 / 生態学 / 系統進化 / 水産学 / 寄生 / カイヤドリウミグモ寄生率 / シオフキ / 宿主肥満度 / 人為的拡散 / 松川浦 |
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| Outline of Final Research Achievements |
18S rDNA analysis revealed the taxonomic position of Nymphonella tapetis within a monophyletic family Ascorhynchidae. Population genetic analysis using 19 newly developed microsatellite markers showed that the N. tapetis populations of Tokyo bay and Mikawa bay shared the same origin, whereas the population of Misaki, Moura peninsula was an independent one.
Vanishment of N. tapetis in Matsukawaura, Fukushima during 2014 was confirmed. Field observations revealed that the N. tapetis parasitism can reduce the burial depth and somatic condition of host clams, and eventually cause clam mortality on the sand. Laboratory experiments suggested that mass mortality of host clams was possibly caused by interactive effects between the parasitic infection and other environmental factors.
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Report
(4 results)
Research Products
(23 results)
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[Journal Article] Life history and distribution of Nymphonella tapetis, a sea spider parasitic on the Manila clam, Ruditapes philippinarum in Tokyo Bay, Japan.2016
Author(s)
Katsumasa Yamada, Katsumi Miyazaki, Seinen Chow, Toshihiro Yamamoto, Takeshi Tomiyama, Tomoyoshi Yoshinaga, Yoshifumi Miyama, Masanori Tamaoki and Mitsuharu Toba
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Journal Title
Bulletin of Japan Fisheries Research and Education Agency
Volume: (42)
Pages: 94-95
Related Report
Open Access
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[Presentation] ウミグモの生態学2017
Author(s)
宮﨑勝己
Organizer
第5回アサリ研究会
Place of Presentation
農林水産省共用第10会議室（東京都千代田区）
Year and Date
2017-02-22
Related Report
Invited
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[Presentation] Life history and distribution of a sea spider, Nymphonella tapetis, parasitic on the Manila clam, Ruditapes philippinarum, in Tokyo Bay, Japan.2015
Author(s)
Katsumasa Yamada, Katsumi Miyazaki, Seinen Chow, Toshihiro Yamamoto, Takeshi Tomiyama, Tomoyoshi Yoshinaga, Yoshifumi Miyama, Masanori Tamaoki and Mitsuharu Toba
Organizer
The Third International Symposium on Manila (Asari) Clam
Place of Presentation
アストホール（三重県・津市）
Year and Date
2015-06-01
Related Report
Int'l Joint Research
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