Table 3. Prevalence of parasites from flounder collected at five sampling sites in the German Bight in 1996–2000. Given are mean prevalence ± standard deviation calculated from the numbers of specimens collected during 2–4 sampling periods in spring and autumn. The number of specimens evaluated is given in Table 1
Species | Elbe | Outer Eider | Helgoland | Spiekeroog | Inner Eider | ||||
|---|---|---|---|---|---|---|---|---|---|
Spring | Autumn | Spring | Autumn | Spring | Autumn | Spring | Autumn | Spring | |
Number of sampling periods | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 2 |
Trichodina spp. | 72.9±13.4 | 78±11.8 | 42.7±20.1 | 39.4±33.3 | 22.7±10.7 | 19.7±24.0 | 65.6±1.9 | 43.9±33.8 | 84.4±6.3 |
Acanthochondria cornuta | 20.4±7.5 | 23.3±19.5 | 70.8±13.4 | 92.5±6.2 | 88.9±5.3 | 98.3±2.4 | 73.7±6.1 | 94.4±1.0 | 39.4±0.8 |
Lepeophtheirus pectoralis | 26.5±10.4 | 94.7±3.8 | 74.5±11.7 | 97.3±2.8 | 89.2±6.4 | 94.9±9.7 | 75.9±8.5 | 97.2±2.5 | 36.1±3.9 |
Lernaeocera branchialis | 72.5±25.0 | 86.3±26.0 | 98.8±2.5 | 98.7±1.8 | 100±0 | 89.1±19.3 | 100±0 | 91.1±15.4 | 100±0 |
Metacercaria sp. 1 | 32.5±17.5 | 27±15.8 | 68.1±16.3 | 42.6±24.5 | 63.4±22.5 | 46.6±22.0 | 49.6±14.3 | 82.8±7.5 | 85.6±11.0 |
Zoogonoides viviparus | 5.8±5 | 2±3.0 | 27.7±16.4 | 28±29.3 | 66.0±29.0 | 63.1±32.7 | 23.7±11.4 | 0 | 3.3±4.7 |
Cucullanus heterochrous | 23.7±14.9 | 24±15.2 | 47.4±10.4 | 40.6±24.0 | 72.3±9.2 | 55.8±22.5 | 51.9±17.0 | 35±13.2 | 22.2±15.7 |
Epieimeria sp. | 36.3±23 | 7±9.7 | 46.5±13.7 | 13.8±16.2 | 41.9±17.9 | 24.1±19.1 | 37.8±13.5 | 6.7±11.5 | 51.6±18 |
Microsporea sp. 1 (kidney) | 32.5±10.2 | 38.7±18.2 | 29.2±8.8 | 31±9.1 | 28.6±9.9 | 46.8±28.5 | 37±6.4 | 15.6±12.6 | 23.9±5.5 |
Glugea stephani | 0 | 0 | 0.8±1.7 | 0.7±1.5 | 1.8±3.6 | 0 | 0 | 0 | 6.1±0.8 |
Myxidium incurvatum | 23.9±16.4 | 14.7±20.2 | 22.2±6.8 | 15.7±11.3 | 22±18 | 29±22.1 | 26.3±6.1 | 15±21.8 | 14.9±10.3 |
Myxozoa sp. 1 (kidney) | 7.5±9.6 | 5.7±10.9 | 10.2±10.8 | 1.3±3 | 0.8±1.7 | 0.7±1.5 | 7.4±12.8 | 7.2±7.5 | 23.9±5.5 |
Gyrodactylus sp. | 0 | 2.2±3.8 | 3.3±4.7 | 0 | 3.6±5.1 | 1.1±1.9 | 0 | 0 | 0 |
Brachyphallus crenatus | 4.6±4.2 | 1.3±3 | 5.1±7.1 | 0 | 2.6±3.4 | 1±2.2 | 7.4±12.8 | 0 | 9.4±5.5 |
Derogenes varicus | 2.1±2.5 | 1±2.2 | 8.2±2.6 | 6.3±6.1 | 9.8±13.7 | 4.4±9.9 | 4.4±7.7 | 8.3±14.4 | 3.3±4.7 |
Lecithaster gibbosus | 0 | 0 | 0 | 0 | 0 | 2±2.7 | 3.7±6.4 | 0 | 3.3±4.7 |
Podocotyle atomon | 0 | 1±2.2 | 9.2±9.1 | 3±4.5 | 10.9±6 | 2.7±4.3 | 3.3±5.8 | 3.3±5.8 | 14.4±11 |
Bothriocephalus spp. | 2.1±2.5 | 0.7±1.5 | 0 | 1.7±2.4 | 1.3±2.5 | 0 | 0 | 1.1±1.9 | 0 |
Proteocephalus sp. | 4.2±5 | 0 | 0.9±1.8 | 1.7±2.4 | 0 | 0 | 0 | 0 | 3.3±4.7 |
Cestoda larvae sp.1 | – | 0 | 0 | 0 | 0.8±1.7 | 0 | 0 | 1.1±1.9 | 0 |
Cestoda larvae sp. 2 | 2.1±2.5 | 0.7±1.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Dichelyne minutus | 0 | 14.7±11 | 0.8±1.7 | 20.1±11.8 | 0 | 12.9±4.2 | 0 | 5.5±1 | 0 |
Goezia sp. | 0 | 3.3±2.0 | – | 1.3±1.8 | 0 | – | 0 | 6.1±7.9 | 0 |
Hysterothylacium aduncum | 14.2±9.2 | 2±3 | 10.4±7.6 | 6.2±6.4 | 15.3±13.9 | 0.7±1.5 | 19.3±5.1 | 7.8±6.9 | 25.6±20.4 |
Paracapillaria gibsoni | 2.5±5 | 5.7±10.9 | 3.5±2.4 | 27.7±13.8 | 11.8±7.9 | 38.2±21.1 | 1.1±1.9 | 18.9±18.4 | 5.6±7.9 |
Corynosoma sp. | 3.8±4.8 | 3±4.5 | 2.5±5 | 0 | 0 | 2±2.7 | 3.7±6.4 | 1.7±2.9 | 0 |
Echinorhynchus gadi | 14.2±23.9 | 0 | 2.2±2.6 | 0 | 0 | 0 | 0 | 0 | 6.7±9.4 |
Pomphorhynchus laevis | – | 0 | 0 | 0 | 0 | 0 | 0 | 0 | – |
Caligus elongatus | 1.3±2.5 | 0 | 5.5±7.2 | 1.3±1.8 | 14.5±18.3 | 5.7±10.1 | 10.4±10 | 0 | 0 |
Holobomolochus confusus | 0 | 3.3±4.7 | 4.8±8.2 | 5.8±9.6 | 9.5±12.4 | 7.5±15 | 3.3±5.8 | 0 | 5.6±7.9 |