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Table 1 Histological and microcell PCR results obtained for Donax trunculus samples for each location and year included in the present study

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

Year 2010 2011 2008
Area Quiberon Oléron Audierne Audierne Douarnenez Quiberon
Sample reference 10_138 10_143 10_171 11_089 11_118 08_131
No. of individuals analysed 14 15 15 30 30 43
Histology, n (%) infected individuals Microcell parasites 6 (42.9) 12 (80.0) 2 (13.3) 22 (73.3) 20 (66.7) 14 (32.6)
Coccidia-like 0 7 (46.7) 0 7 (23.3) 22 (73.3) 9 (21.0)
Rickettsia-like 0 5 (33.3) 7 (46.7) 4 (13.3) 2 (6.7) 3 (7.0)
Gregarine spores 3 (21.4) 8 (53.3) 13 (86.7) 18 (60.0) 25 (83.3) 17 (39.6)
Trematodes 0 0 0 0 6 (20.0) 1 (2.3)
PCR for microcell detection, n (%) infected individuals Bo primers 0 0 0 0 0 0
MM primers 0 0 0 5 (13.7) 0 0
MM-like primers 0 0 0 nd nd nd
Msp primers 7 (50.0) 6 (40.0) 3 (20.0) 20 (66.7) 24 (80.0) 6 (13.9)
  1. Abbreviation: nd not done