2013 Fiscal Year Final Research Report
Biologging study of Mekong giant catfish in the dam lake of Thailand
| Project/Area Number |
23405032
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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 | 海外学術 |
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| Research Field |
General fisheries
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| Research Institution | Kyoto University |
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Principal Investigator |
ARAI Nobuaki 京都大学, フィールド科学教育研究センター, 教授 (20252497)
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| Co-Investigator(Renkei-kenkyūsha) |
MITAMURA Hiromichi 京都大学, 大学院・情報学研究科, 助教 (20534423)
OKUYAMA Junichi 京都大学, フィールド科学教育研究センター, 特定研究員 (80452316)
KOYAMA Lina 京都大学, 大学院・情報学研究科, 准教授 (50378832)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | バイオロギング / メコンオオナマズ / 絶滅危惧種 / バイオテレメトリー |
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| Research Abstract |
Mekong giant catfish, Pangasianodon gigas are endemic species to the Mekong river basin and decrease in recent years. Artificial fingerlings have been released to a domestic dam lake in a Thai country to enhance the resource. In this study, we measured the bottom of geographical features by a GPS fish finder and tracked the catfish using ultrasonic biotelemetry in order to the relation between their habitats and the bottom features.
It was suggested that the catfish were distributed around the near the old river in the lake. Moreover, some cultured catfish used around the dam in nighttime and moved to the north in daytime. In addition, one of two wild fish was widely using the lake.
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