Table 2 Records of the parasitic copepod M. intestinalis in mussels (M. edulis) between 1939 and 2004 as indicated in the literature
From: Parasites in the northern Wadden Sea: a conservative ecosystem component over 4 decades
Time | Prevalence | Intensity | No. of sites | Source |
|---|---|---|---|---|
1939 | Probably absent | × | Only samples from other North-Frisian sites | Caspers (1939) |
1950–1953 | Probably absent | × | Only samples from other North-Frisian sites | Meyer-Warden and Mann (1954) |
1969–1970 | 2.5% | 1.5 ± 0.7 | 2 | Dethlefsen (1972) |
2003–2004 | 68.4 ± 25.7% | 3 ± 1.7 | 6 | Thieltges et al. (2006) |