2015 Fiscal Year Final Research Report
A detailed ecology of Japanese eels based on the parasites and otoliths as indicators
| Project/Area Number |
24580267
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
General fisheries
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
UMINO TETSUYA 広島大学, 大学院生物圏研究科, 准教授 (70232890)
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| Co-Investigator(Renkei-kenkyūsha) |
KATAHIRA HIROTAKA 日本学術振会, 北海道大学, 特別研究員 (70722651)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Keywords | ニホンウナギ / 寄生虫 / 耳石 |
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| Outline of Final Research Achievements |
Ecological aspects of Japanese eels (Anguilla japonica) were investigated by studying the microchemistry of otoliths and the parasite fauna as indicators of the life of the species. This study has revealed that Japanese eels prey on a variety of benthic animals including crabs, which serve as the intermediate hosts of the eel stomach nematode (Heliconema anguillae), in brackish waters. Japanese eels from brackish waters were also infected by the gill monogenean (Pseudodactylogyrus kamegaii), which indicates that Japanese eels stably maintain their stocks as the host of the monogenean in brackish waters.
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| Free Research Field |
水産増殖学
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