Table 4 : Infection parameters of parasites from flounder collected at five sampling sites in the German Bight in 1996–2000. Given are mean intensity and the corresponding 95% confidence interval and the mean abundance calculated from the number of specimens collected during 2–4 sampling periods in spring and autumn. The number of specimens evaluated is given in Table 1

Number of sampling points

4

4

4

4

4

4

3

3

2

Trichodina spp.

1

1.3

1

1

1.5

1.0

1

1

2

1.1; 1.3

1.2; 1.4

1.3; 1.7

0.9; 1.1

0.9; 1.4

–

1.0; 1.3

1.0; 1.4

1.5; 2.2

0.9

1.1

0.6

0.4

0.2

0.2

0.7

0.6

1.6

Acanthochondria cornuta

4

3

9.1

10.40

8.3

8.37

8.9

8.2

7.3

2.0; 5.3

1.4; 3.8

6.6; 10.0

6.9; 9.8

7.7; 10.5

8.8; 12.0

6.8; 11.1

6.6; 9.9

3.3; 11.3

0.7

0.6

6

8.5

8.2

10.2

6.7

7.7

2.9

Lepeophtheirus pectoralis

4.2

8.64

8.5

10.29

7.4

12.81

7.7

16.0

7

2.4; 5.9

7.4; 9.9

6.1; 8.7

11.5; 14.1

6.7; 10.3

9.1; 11.5

5.9; 9.5

13.7; 18.3

2.9; 11.1

1.1

8.6

5.6

13

7.6

10.5

6.3

15.6

2.5

Lernaeocera branchialis

34.0

25.2

85.9

18.1

76.4

39.1

114.9

46.8

90.7

21.4; 46.5

20.2; 30.3

62.9; 89.9

29.8; 48.4

66.1; 105.6

15.4; 20.8

90.2; 139.6

32.8; 60.8

68.3; 113.0

25.5

22.9

75.6

45.7

85.9

18.4

114.9

41.4

90.7

Metacercaria sp. 1

35.0

22.7

35.3

48.3

36.5

25.32

16.0

45.9

105.2

11.4; 58.6

10.2; 35.2

18.1; 54.8

3.9; 46.7

14.3; 56.3

0.4; 96.1

8.5; 23.6

27.1; 64.6

26.4; 183.9

11.2

7.3

24.1

13.2

23.5

26.5

8.7

38.7

89.2

Zoogonoides viviparus

16.5

9

69.68

46.13

18.2

30.43

30.9

–

76

5.4; 38.4

25.4; 43.4

5.9; 30.4

17.2; 43.7

46.1; 93.7

33.8; 58.4

17.2; 27.0

–

–

1

0.02

5.4

7.6

43.3

29.1

7.7

–

2.3

Cucullanus heterochrous

2

4.9

4.0

5

2.9

2.9

3.4

2.5

6.3

1.5; 3.1

-1.9; 11.7

2.1; 3.6

2.1; 3.7

3.1; 4.9

3.4; 6.4

2.3; 4.5

1.3; 3.7

-5.1; 17.7

0.6

0.4

1.4

1.2

2.9

3.2

2

0.8

1.3

Brachyphallus crenatus

12

1

3

–

2

1

3

–

2

14.7; 37.7

–

0.9; 6.9

–

4.9; 7.9

–

22.4; 28.4

–

3.4; 8.1

0.5

0.02

0.1

–

0.04

0.01

0.1

–

0.2

Derogenes varicus

1

2

2

2

1

2

2

1

2

–

–

0.5; 3.3

0.3; 4.5

0.9; 1.4

4.9; 7.9

0.6; 2.4

0.7; 2.1

–

0.02

0.02

0.2

0.2

0.1

0.2

0.1

0.1

0.1

Podocotyle atomon

–

–

3

6

5

2

4

1

1

–

–

1.1; 5.6

7.3; 18.8

1.1; 10.7

4.9; 7.9

8.9; 16.9

–

0.7; 1.8

–

–

0.3

0.2

0.5

0.04

0.3

0.03

0.2

Echinorhynchus gadi

1

–

2

–

–

–

–

–

2

0.9; 1.4

–

4.9; 7.9

–

–

–

–

–

4.9; 7.9

0.1

–

0.03

–

–

–

–

–

0.1

Caligus elongatus

1

–

2

2

2

1

2

–

–

–

–

0.4; 3.2

10.7; 14.7

0.5; 5.2

–

0.4; 3.6

–

–

0.01

–

0.1

0.04

0.4

0.1

0.3

–

–

Holobomolochus confusus

–

1

1

1

1

1

1

–

1

–

–

0.5; 2.0

–

0.5; 2.2

–

–

–

–

–

0.01

0.2

0.01

0.4

0.1

0.08

–

0.03

Gyrodactylus sp.

–

1

3

–

2

10

–

–

–

Lecithaster gibbosus

–

–

–

–

–

1

1

–

1

Bothriocephalus spp.

1

–

–

1

1

–

–

1

–

Proteocephalus sp.

5 (2–9)

–

1

2

–

–

–

–

–

Cestoda larvae sp. 1

–

–

–

–

1

–

–

2

–

Cestoda larvae sp. 2

3 (1–5)

1

–

–

–

–

–

–

–

Goezia sp.

–

1

–

1

–

–

–

3 (2–5)

–

Corynosoma sp.

1

1

1

–

–

1

6

1

–

Pomphorhynchus laevis

–

–

–

–

–

–

–

–

23

Dichelyne minutus

–

2

6

2

–

1

–

2

–

–

1.0; 1.9

–

1.1; 3.0

–

0.9; 2.0

–

0.2; 3.3

–

–

2.3

0.06

0.3

–

0.2

–

0.1

–

Hysterothylacium aduncum

2

1

1

1

4

1

6

2

2

0.6; 3.4

–

0.8; 1.9

–

0.04; 7.5

–

2.8; 14.0

0.4; 2.9

1.1; 3.6

0.3

0.03

0.1

0.07

0.5

0.01

0.9

0.1

0.6

Paracapillaria gibsoni

4

5

7

4

6

19

1

5

2

21.4; 29.4

1.3; 10.3

8.8; 23.5

2.9; 5.9

1.4; 13.9

6.8; 30.8

–

2.7; 7.2

10.7; 14.7

0.08

0.3

0.2

1.1

0.8

7.2

0.02

0.8

0.1