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Chattonella and Fibrocapsa (Raphidophyceae): first observation of, potentially harmful, red tide organisms in Dutch coastal waters
Vrieling, E.G.; Koeman, R.P.T.; Nagasaki, K.; Ishida, Y.; Peperzak, L.; Gieskes, W.W.C.; Veenhuis, M. (1995). Chattonella and Fibrocapsa (Raphidophyceae): first observation of, potentially harmful, red tide organisms in Dutch coastal waters. Neth. J. Sea Res. 33(2): 183-191
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579; e-ISSN 1873-1406, meer
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| Auteurs | | Top |
- Vrieling, E.G.
- Koeman, R.P.T.
- Nagasaki, K.
- Ishida, Y.
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- Peperzak, L.
- Gieskes, W.W.C.
- Veenhuis, M.
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| Abstract |
Species of the potentially toxic and red-tide-forming marine-phytoplankton genera Chattonella and Fibrocapsa (Raphidophyceae) were observed for the first time in 1991 in samples taken in Dutch coastal waters; they were again recorded and enumerated in the following years. Chattonella spp. cell numbers varied with the season, with a maximum in May or June in the Dutch Wadden Sea. Cell numbers of Chattonella and F. japonica Toriumi et Takano were up to 6.0·10³ cells·dm-3 in the Dutch Wadden Sea, except at one station in June 1993 when over 104 cells·dm-3 Chattonella were counted. In May 1993, a minor bloom (over 2.0·105 cells·dm-3) was observed at a station in the southern central North Sea, 100 km northwest of the island of Terschelling. The potentially neurotoxic species Chattonella marina (Subrahmanyan) Hara et Chihara was identified and discriminated from morphologically related species within the class of Raphidophyceae by immunofluorescence. F. japonica could only be clearly identified in live samples; in fixed samples cell morphology was severely affected. The identification of this species was supported by the presence of mucocysts, structures that can be observed readily by optical and electron microscopy. |
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