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Table 2 Dimensions, nucleus characteristics and form proportions of Mikrocytos spp. according to sampling areas and years

From: Descriptions of Mikrocytos veneroïdes n. sp. and Mikrocytos donaxi n. sp. (Ascetosporea: Mikrocytida: Mikrocytiidae), detected during important mortality events of the wedge clam Donax trunculus Linnaeus (Veneroida: Donacidae), in France between 2008 and 2011

Sample origin Histologya TEMa
No. of cells examined Mean diameter (μm) Diameter range (μm) Eccentric nucleus (%) No. of cells examined Cell dimension range (μm)b Nucleus dimension range (μm)b Eccentric nucleus (%) Dense form (%)
Quiberon 2008 200 1.91 1.08–3.2 80 20 2–4.72 × 1.31–4 0.94–2.22 × 0.56–2 75 80
Quiberon 2010 200 1.88 1.25–2.73 85 nd nd nd nd nd
Oléron 2010 200 2.01 1.19–3.01 71 nd nd nd nd nd
Audierne 2010 90 2.05 1.49–2.71 75 nd nd nd nd nd
Audierne 2011 200 1.79 1.16–2.94 76 20 1.83–3.2 × 1.07–2.42 0.68–1.38 × 0.59–1.09 85 100
Douarnenez 2011 200 2.15 1.28–3.17 87 12 2.03–3.79 × 1.60–2.50 0.73–1.70 × 0.71–1.26 75 75
  1. aThese observations were performed both on intracellular and extracellular parasites; the cell position of the parasites was not taken into account in the observations
  2. bLength × width
  3. Abbreviation: nd not done