Phytoplankton assemblages in Onagawa Bay from 2012 to 2013 determined by DNA sequencing and pigment analysis
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- Okumura Yutaka
- Fisheries Resource Institute / Fisheries Technology Institute, Japan Fisheries Research and Education Agency
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- Masuda Yoshio
- Miyagi Prefecture Fisheries Technology Institute
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- Suzuki Noriaki
- Miyagi Prefectural Government, Sendai Regional Promotion Office, Fisheries and Fishing Port Department
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- Irokawa Nanase
- Miyagi University Aomori Prefectural Industrial Technology Research Center Fisheries Institute
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- Katayama Ayu
- Miyagi University
Bibliographic Information
- Other Title
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- 2012年から2013年の女川湾における植物プランクトン群集について
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Description
The phytoplankton assemblages in Onagawa Bay were investigated by photosynthetic pigment analysis and DNA sequencing over two consecutive years, from January 2012 to December 2013. Chlorophyll a (Chl a) concentrations tended to be high from winter to spring, and fucoxanthin, the source of which is mainly diatoms, was also high. Chlorophyll b concentration, which is retained in picoprasinophytes, tended to be higher in June. Cyanobacteria tended to appear in the summer, although, at less than 2%, in relatively small amounts. Since picoeukaryotes and cyanobacteria are small, shellfish filters cannot trap them efficiently, so the amount of nutrition obtained from them is relatively low and inefficient. Dinophysis norvegica (the causative agent of diarrheal shellfish poisoning)was the dominant dinoflagellate species throughout the study. Two species of dominant cryptophyte that were found are food sources of ciliate Myrionecta rubra which is a food source for Dinophysis spp., so unfortunately, they render Onagawa Bay susceptible to the growth of Dinophysis spp.. Phaeocystis spp. was the dominant haptophyte. The combination of pigment analysis by HPLC and DNA Next Generation Sequencing provided good data on seasonal phytoplankton variation, which is necessary to understand the detailed feeding environment for shellfish raised in Onagawa Bay.
Journal
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- La mer
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La mer 61 (3-4), 259-274, 2024-03-27
The Japanese-French Oceanographic Society
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Details 詳細情報について
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- CRID
- 1390862776829875584
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- NII Book ID
- AN00019968
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- ISSN
- 24342882
- 05031540
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- NDL BIB ID
- 033460024
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
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- Abstract License Flag
- Disallowed