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有毒鞭毛藻Alexandrium tamarenseの増殖機構に関する生理生態学的研究
https://fra.repo.nii.ac.jp/records/2002394
https://fra.repo.nii.ac.jp/records/2002394ddbc2ef5-2469-44b6-8468-7771217fc36b
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-04-22 | |||||||
| タイトル | ||||||||
| タイトル | 有毒鞭毛藻Alexandrium tamarenseの増殖機構に関する生理生態学的研究 | |||||||
| 言語 | ja | |||||||
| タイトル | ||||||||
| タイトル | Ecophysiological Studies on the Population Dynamics of Toxic Dinoflagellate Alexandrium tamarense | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | jpn | |||||||
| キーワード | ||||||||
| 言語 | en | |||||||
| 主題Scheme | Other | |||||||
| 主題 | Alexandrium tamarense; growth; Hiroshima Bay; model; uptake | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | departmental bulletin paper | |||||||
| 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 | |||||||
| 著者 |
樽谷, 賢治
× 樽谷, 賢治
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | In spring of 1992, the first paralytic shellfish poisoning (PSP) was experienced in Hiroshima Bay due to the occurrence of toxic dinoflagellate Alexandrium tamarense bloom. Since then, PSP due to this species has become an annual event and poses a serious problem to the oyster culture industry as well as to public health because Hiroshima Bay has the highest production of cultured oyster in Japan. In order to elucidate the ecophysiology of A. tamarense in Hiroshima Bay, the physiological characteristics were experimentally obtained along with field observations, and the community dynamics of phytoplankton was investigated using the mathematical models in the present study. Environmental factors affecting the population dynamics of phytoplankton monitored in Kure Port, Hiroshima Bay, from February to May 1995 suggested that nutrient supply into this area was largely depending on the inflow of freshwater, and the growth of phytoplankton was limited by the availability of phosphate or silicate. Field monitoring data also showed that A. tamarense was not predominant in the phytoplankton community but coexisted with other species (Skeletonema costatum, Chaetoceros spp., Heterocapsa triquetra etc.). Population dynamics of A. tamarense and S. costatum were studied under two different phosphate supply modes in non-steady state semicontinuous cultures; daily supply and weekly supply modes. In the daily supply mode, the simulation model based on both the truncation model and the Droop model predicted the population dynamics of these species well. In the weekly supply mode, while the simulation model more appropriately described the observed dynamics of S. costatum, it could not reproduce the experimental growth of A. tamarense. This seemed to be due to time lag between phosphate supply and the growth response. An improved model, which includes the processing time of incorporated intracellular phosphate, could describe these non-steady state dynamics of A. tamarense. The dynamics of competition among three phytoplankton species (A. tamarense, H. triquetra, and S. costatum) studied using the same numerical model under various phosphate and silicate supply conditions. A. tamarense and H. triquetra were able to coexist with S. costatum only when silicate load was small. Under high frequency nutrient supply (daily), H. triquetra always predominated over A. tamarense. On the other hand, under low frequency nutrient supply (weekly), A. tamarense often predominated over H. triquetra and sometimes coexisted with S. costatum while H. triquetra was depressed. These results showed that A. tamarense can coexist with S. costatum only when the latter is limited by the availability of silicate. However, low frequency nutrient supply conditionsare highly favorable to A. tamarense than H. triquetra. These results obtained in the present study suggest that the proliferation of the toxic dinoflagellate A. tamarense in estuaries can be prevented by controlling the riverine nutrient loading ratio and the supply intervals. | |||||||
| 言語 | en | |||||||
| bibliographic_information |
ja : 瀬戸内海区水産研究所研究報告 en : Bulletin of Fisheries and Environment of Inland Sea 巻 1, p. 63-96, ページ数 34, 発行日 1999-03 |
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| 出版者 | ||||||||
| 出版者 | 瀬戸内海区水産研究所 | |||||||
| 言語 | ja | |||||||
| 出版者 | ||||||||
| 出版者 | National Research Institute of Fisheries and Environment of Inland Sea | |||||||
| 言語 | en | |||||||
| item_10002_source_id_9 | ||||||||
| 収録物識別子タイプ | PISSN | |||||||
| 収録物識別子 | 1344-8579 | |||||||
| item_10002_source_id_11 | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA1138042X | |||||||
| 情報源 | ||||||||
| 識別子タイプ | Local | |||||||
| 関連識別子 | seto_k_106 | |||||||
| 関連サイト | ||||||||
| 識別子タイプ | URI | |||||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010611634 | |||||||
| 言語 | ja | |||||||
| 関連名称 | 日本農学文献記事索引(agriknowledge) | |||||||
