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Table 2 Total number of snails (ten snail species) sampled in 21 lakes

From: Trematode diversity reflecting the community structure of Danish freshwater systems: molecular clues

Snail

Infection level

Lakesa

Total

Rin

Bag

Utt

Søn-Z

Sjæ

Har

Fur

Far

Esr

Bur

Tis

Lyn

Bro

Stu

Ska

Mos

Tan

Tje

Hal

Søn-J

Alm

Lymnaeidae

 Lymnaea stagnalis

No. snails examined

90

54

21

16

5

3

163

9

207

2

–

–

25

97

82

6

104

214

41

27

7

1173

No. snails infected

42

5

0

0

0

0

49

0

13

0

–

–

0

7

32

0

4

61

0

0

0

213

Prevalence (%)

46.7

9.3

0

0

0

0

30.1

0

6.3

0

–

–

0

7.2

39.0

0

3.8

28.5

0

0

0

18.2

 Radix balthica

No. snails examined

–

303

44

75

22

101

18

15

111

–

–

–

110

13

21

3

49

73

140

93

9

1200

No. snails infected

–

30

0

0

0

1

14

0

42

–

–

–

45

0

4

0

7

19

0

9

2

173

Prevalence

–

9.9

0

0

0

0.99

77.8

0

37.8

–

–

–

41.0

0

19.0

0

14.3

26.0

0

9.7

22.2

14.4

 Radix auricularia

No. examined

–

–

–

–

9

–

–

25

–

–

–

–

–

–

–

–

–

–

–

–

–

34

No. infected

–

–

–

–

0

–

–

0

–

–

–

–

–

–

–

–

–

–

–

–

–

0

Prevalence (%)

–

–

–

–

0

–

–

0

–

–

–

–

–

–

–

–

–

–

–

–

–

0

 Stagnicola palustris

No. snails examined

–

72

–

3

–

2

28

–

389

42

183

33

–

–

166

–

–

–

–

–

–

918

No. snails infected

–

18

–

0

–

1

4

–

62

2

10

4

–

–

11

–

–

–

–

–

–

112

Prevalence (%)

–

25.0

–

0

–

0.5

14.3

–

15.9

4.8

5.5

12.1

–

–

6.6

–

–

–

–

–

–

12.2

 Omphiscola glabra

No. snails examined

–

–

–

–

–

–

6

–

–

–

–

–

–

–

8

–

–

–

–

–

2

16

No. snails infected

–

–

–

–

–

–

2

–

–

–

–

–

–

–

4

–

–

–

–

–

2

8

Prevalence (%)

–

–

–

–

–

–

33.3

–

–

–

–

–

–

–

50

–

–

–

–

–

100

50

Planorbidae

 Planorbarius corneus

No. snails examined

–

199

16

44

–

1

208

–

40

27

–

58

–

–

17

1

45

–

–

31

–

687

No. snails infected

–

1

0

0

–

0

57

–

0

0

–

3

–

–

3

0

4

–

–

0

–

68

Prevalence (%)

–

0.5

0

0

–

0

27.4

–

0

0

–

5.2

–

–

17.6

0

8.9

–

–

0

–

9.9

 Planorbis planorbis

No. snails examined

–

–

–

–

–

–

–

–

–

14

113

–

–

–

–

–

–

–

–

–

–

127

No. snails infected

–

–

–

–

–

–

–

–

–

0

5

–

–

–

–

–

–

–

–

–

–

5

Prevalence (%)

–

–

–

–

–

–

–

–

–

0

4.4

–

–

–

–

–

–

–

–

–

–

3.9

 Anisus vortex

No. snails examined

–

46

–

59

169

–

422

157

262

–

–

158

–

6

111

1

11

–

–

–

–

1402

No. snails infected

–

0

–

0

4

–

59

0

10

–

–

51

–

0

5

0

1

–

–

–

–

130

Prevalence (%)

–

0

–

0

2.4

–

14.0

0

3.8

–

–

32.3

–

0

4.5

0

9.0

–

–

–

–

9.3

Bithyniidae

 Bithynia leachii

No. snails examined

–

–

–

–

–

27

7

–

–

–

–

–

–

–

–

–

–

–

–

–

–

34

No. snails infected

–

–

–

–

–

0

0

–

–

–

–

–

–

–

–

–

–

–

–

–

–

0

Prevalence (%)

–

–

–

–

–

0

0

–

–

–

–

–

–

–

–

–

–

–

–

–

–

0

 Bithynia tentaculata

No.snails examined

–

21

–

–

–

–

–

–

21

3

–

1

20

–

–

–

–

–

–

–

–

66

No. snails infected

–

4

–

–

–

–

–

–

1

0

–

1

0

–

–

–

–

–

–

–

–

6

Prevalence (%)

–

19.0

–

–

–

–

–

–

4.8

0

–

100

0

–

–

–

–

–

–

–

–

9.1

Total prevalence (%)

53.5

8.3

0.0

0.0

2.0

1.5

21.7

0.0

12.4

2.3

5.1

23.6

29.0

6.0

14.6

0.0

7.7

27.9

0.0

6.0

22.2

12.6

  1. Sampling from March to September 2019, with the number of examined snails, infected snails, overall prevalence of trematode infections (% of infected snails in the overall samples)
  2. aSee Table1 for details on lakes