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Physiological responses of a freshwater copepod Eodiaptomus japonicus on different temperature and food conditions, evaluating anthropogenic impacts in Lake Biwa
https://doi.org/10.24795/24201k085
https://doi.org/10.24795/24201k0851bab513d-3bc0-4bed-8336-f6a7bbb24e5a
| 名前 / ファイル | ライセンス | アクション |
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| Item type | 学位論文 / Thesis or Dissertati(1) | |||||||
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| 公開日 | 2016-11-18 | |||||||
| タイトル | ||||||||
| タイトル | Physiological responses of a freshwater copepod Eodiaptomus japonicus on different temperature and food conditions, evaluating anthropogenic impacts in Lake Biwa | |||||||
| 言語 | en | |||||||
| その他のタイトル | ||||||||
| その他のタイトル | 淡水産カイアシ類 Eodiaptomus japonicus の異なる温度・餌環境に対する生理的応答 : 琵琶湖における人為的影響に対する評価 | |||||||
| 言語 | ja | |||||||
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| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| ID登録 | ||||||||
| ID登録 | 10.24795/24201k085 | |||||||
| ID登録タイプ | JaLC | |||||||
| 著者 |
Liu, Xin
× Liu, Xin
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| 学位名 | ||||||||
| 言語 | ja | |||||||
| 学位名 | 博士（環境科学） | |||||||
| 学位授与機関 | ||||||||
| 言語 | ja | |||||||
| 学位授与機関名 | 滋賀県立大学 | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2016-03-21 | |||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲第85号 | |||||||
| 内容記述 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 環課第48号 | |||||||
| 言語 | ja | |||||||
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| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Global climate change is affecting a variety of aquatic organisms including warming and eutrophication in the ecosystems. Copepod is one of the most widely distributed micro-crustaceans in the aquatic ecosystems. They are important components of zooplankton community and play an important role in the trophic dynamics as a good biological indicator of production status. Therefore, understanding the processes that control the abundance and population dynamics of copepods is a major objective in aquatic ecology and limnology. Calanoid copepod Eodiaptomus japonicus is an endemic species in Japan, and reported to be dominant species in the largest and oldest freshwater ecosystem — Lake Biwa. In this study, I studied the effect of temperature and food conditions on the life history traits of E. japonicus collected from the lake in the laboratory, to clarify responses of somatic growth, reproduction and metabolic rates to the different temperature and food conditions, and consequently evaluated the impacts of eutrophication and global warming on its production during the last 4 decades in this lake. The experimental studies for E. japonicus highlighted the importance of temperature and food conditions on its life cycle strategy. The results showed that this warm-adapted copepod was able to develop and reproduce in a wide range of temperature and food conditions, and the food effects depended on temperature. Somatic and population growths were depressed under food-limited condition especially at high temperatures due to lowering the net growth efficiency by high metabolic costs. Finally, the long-term analyses showed that production of the copepod tended to increase after 1990, and predicted that the warming would be beneficial for E. japonicus population in the lake under current nutritional status, while disadvantageous under 6% lower food conditions assuming lowering the primary production due to global warming. |
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| 言語 | en | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| 主題 | ||||||||
| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | Copepoda | |||||||
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| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | Eodiaptomus japonicus | |||||||
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| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | anthropogenic impacts | |||||||
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| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | global warming | |||||||
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| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | eutrophication | |||||||
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| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | temperature and food conditions | |||||||
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| 言語 | ja-Latn | |||||||
| 主題Scheme | Other | |||||||
| 主題 | life history traits | |||||||
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| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | long-term trends | |||||||
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| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | metabolic plasticity | |||||||
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| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | secondary production | |||||||
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| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | freshwater ecosystem | |||||||
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| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | Lake Biwa | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
