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A method for predicting the occurrence of paralytic shellfish poisoning along the coast of Hokkaido in the Okhotsk Sea in summer

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Title: A method for predicting the occurrence of paralytic shellfish poisoning along the coast of Hokkaido in the Okhotsk Sea in summer
Authors: Shimada, Hiroshi Browse this author
Sawada, Mayumi Browse this author
Tanaka, Iori Browse this author
Asami, Hiroki Browse this author
Fukamachi, Yasushi Browse this author →KAKEN DB
Keywords: Alexandrium tamarense
Okhotsk Sea
Paralytic shellfish poisoning
Prediction
Sea-level difference
Soya Warm Current
Issue Date: Jul-2012
Publisher: Springer Japan
Journal Title: Fisheries Science
Volume: 78
Issue: 4
Start Page: 865
End Page: 877
Publisher DOI: 10.1007/s12562-012-0513-5
Abstract: To design a method for predicting outbreaks of paralytic shellfish poisoning (PSP) in scallop fishing grounds, the relationship between the distribution of the toxic dinoflagellate Alexandrium tamarense and the dynamics of the Soya Warm Current (SWC) was examined in the Okhotsk Sea off Hokkaido. Surveys were conducted from May to June to clarify the transportation mechanism of A. tamarense from the oceanic area to the coastal area. The sea-level difference (SLD) between Wakkanai and Abashiri was monitored as an index of the strength of the SWC southeastward flow in an alongshore belt to examine the possible occurrence of A. tamarense in the coastal area during temporal weakening of the SWC. A bottom-mounted ADCP was used for direct observations of the SWC. The results indicated that PSP occurred when low salinity water contaminated with A. tamarense extended to the coast during the temporal weakening of the SWC due to a decrease of the SLD. Our results strongly indicate that predictions can be realized by monitoring the decrease of SLD as an index of temporal weakening of the SWC after surveys of the distribution of A. tamarense in the oceanic area before the period of PSP occurrence.
Rights: © 2012 公益社団法人日本水産学会
The final publication is available at www.springerlink.com
© 2012 The Japanese Society of Fisheries Science
Type: article (author version)
URI: http://hdl.handle.net/2115/49743
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 深町 康

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