کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2062051 1076554 2010 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Co-Occurrence of the West European (Gr.III) and North American (Gr.I) Ribotypes of Alexandrium tamarense (Dinophyceae) in Shetland, Scotland
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Co-Occurrence of the West European (Gr.III) and North American (Gr.I) Ribotypes of Alexandrium tamarense (Dinophyceae) in Shetland, Scotland
چکیده انگلیسی

An investigation into the diversity of the dinoflagellate Alexandrium was carried out during August 2007 within two fjordic sea lochs in the Shetland Isles, Scotland. The co-occurrence in the water column of the non-toxic West European (W.E. or Gr.III) and the neurotoxic North American (N.A. or Gr.I) ribotypes of A. tamarense was demonstrated using fluorescent in situ hybridisation. A patch of A. tamarense (W.E.) localised at ∼10 m depth and extending over 6 km was detected in ‘Clift Sound’ with concentrations locally reaching ∼1×104 cells l−1. A. tamarense (N.A.) was also observed there but despite the presence of toxins in net haul samples collected locally, concentrations were low and near limits of detection. Alexandrium concentrations were ∼1.5×103 cells l−1 in ‘Vaila Sound’, where both W.E. and N.A. ribotypes were detected with equal relative abundances in some samples. Given the patchiness of A. tamarense populations and their possible organisation in thin layer structures, better vertical resolution through fine-scale sampling will be necessary for population dynamic studies. Implications for the shellfish industry are substantial since harmful microalgae patches may not be detected during routine monitoring. Moreover, the co-occurrence of morphologically indistinct toxic and non-toxic ribotypes will necessitate implementing molecular methods for their discrimination.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Protist - Volume 161, Issue 3, July 2010, Pages 370–384
نویسندگان
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