Table 2 Measures of infections with protozoan and helminth ectoparasites of Oreochromis niloticus (L.) (n = 20) for the 29 extant tilapia farms in Yucatán, México

P

70 (65-74)

95 (90-99)

65 (59-69)

40 (35-47)

0

55 (51-54)

0

40 (35-47)

40 (35-47)

0

10 (6-15)

1

MA

14.1 ± 22.03

34.8 ± 38.92

9.45 ± 14.73

14.8 ± 54.65

0

16.95 ± 43.28

0

1.95 ± 3.17

12.5 ± 24.84

0

0.15 ± 0.48

MI

20.14 ± 24.05

49.71 ± 39.09

13.5 ± 16.24

21.14 ± 76.28

0

24.21 ± 55.58

0

2.78 ± 3.31

17.85 ± 31.72

0

0.21 ± 0.70

P

70 (65-74)

50 (45-56)

55 (50-60)

35 (32-40)

0

20 (16-26)

0

15 (11-20)

35 (32-40)

5 (1-8)

20 (16-26)

2

MA

41.5 ± 54.26

4.3 ± 6.49

9.4 ± 10.44

2.1 ± 3.21

0

1.3 ± 2.77

0

0.45 ± 1.23

3.3 ± 5.69

0.1 ± 0.44

0.25 ± 0.55

MI

59.28 ± 56.28

6.14 ± 6.93

13.42 ± 7.91

3 ± 2.30

0

1.85 ± 1.91

0

0.64 ± 1.73

4.71 ± 5.94

0.14 ± 0.44

0.35 ± 0.5

P

85 (79-89)

85 (79-89)

20 (16-26)

20 (16-26)

20 (16-26)

50 (45-56)

0

20 (16-26)

65 (59-69)

10 (6-15)

15 (11-20)

3

MA

153.3 ± 174

115.9 ± 182

5.6 ± 16.57

1.65 ± 5.18

0.25 ± 0.55

24.7 ± 43.66

0

0.65 ± 1.59

6.95 ± 8.84

0.15 ± 0.48

1.05 ± 3.80

MI

180.35 ± 176

136.35 ± 190

28 ± 30.06

8.25 ± 9.87

1.25 ± 0.54

49.4 ± 51.66

0

3.25 ± 2.21

10.69 ± 9.07

1.5 ± 1

7 ± 8.66

P

80 (76-88)

40 (35-47)

50 (45-56)

50 (45-56)

10 (6-15)

35 (32-40)

5 (1-8)

15 (11-20)

50 (45-56)

5 (1-8)

10 (6-15)

4

MA

52.4 ± 97.80

10.5 ± 19.33

5.95 ± 9.09

5.9 ± 8.42

0.1 ± 0.30

8.4 ± 18.30

0.2 ± 0.89

0.3 ± 0.80

4.9 ± 8.69

0.75 ± 3.35

0.1 ± 0.30

MI

65.5 ± 105

26.25 ± 23.28

11.9 ± 9.80

11.8 ± 8.50

1 ± 0

24 ± 24.97

4 ± 0.89

2 ± 1

9.8 ± 10.31

15 ± 3.35

1 ± 0

P

100 -

55 (51-54)

30 (26-36)

75 (70-80)

0

50 (45-56)

0

64 (59-68)

85 (79-89)

35 (32-40)

35 (32-40)

5

MA

151 ± 216.46

47.25 ± 113.89

4.2 ± 7.89

8.65 ± 8.58

0

28.2 ± 45.87

0

3.5 ± 3.69

35.3 ± 60.38

2.55 ± 5.22

0.75 ± 1.64

MI

161 ± 216.46

85.90 ± 144.88

14 ± 8.39

11.53 ± 8.02

0

56.4 ± 51.72

0

5.38 ± 3.24

41.52 ± 63.68

7.28 ± 6.79

2.14 ± 0.89

P

95 (90-99)

55 (50-60)

50 (45-56)

35 (32-40)

0

40 (35-47)

15 (11-20)

5 (1-8)

55 (50-60)

5 (1-8)

0

6

MA

38.8 ± 34.30

8.4 ± 12.14

9.65 ± 19.50

3.8 ± 6.51

0

24.25 ± 76.05

2.8 ± 8.21

0.05 ± 0.22

20.35 ± 53.98

0.1 ± 0.44

0

MI

40.84 ± 33.97

15.27 ± 12.84

19.3 ± 24.42

10.85 ± 6.71

0

60.62 ± 114

18.66 ± 14.04

1 ± 0

37 ± 69.70

2 ± 0

0

P

80 (76-88)

55 (50-60)

55 (50-60)

45 (40-51)

0

45 (40-51)

5 (1-8)

35 (32-40)

55 (50-60)

5 (1-8)

0

7

MA

66.05 ± 94.31

11.7 ± 13.72

3.8 ± 7.19

3.05 ± 4.71

0

11 ± 20.19

0.4 ± 1.78

1.05 ± 2.23

68.7 ± 217

0.05 ± 0.22

0

MI

82.56 ± 99.06

21.27 ± 11.56

6.90 ± 8.64

6.77 ± 4.94

0

24.44 ± 24.46

8 ± 8

3 ± 3

124.90 ± 286

1 ± 1

0

P

80 (76-88)

80 (76-88)

40 (35-47)

55 (50-60)

0

55 (50-60)

10 (6-15)

35 (32-40)

65 (59-69)

0

25 (20-29)

8

MA

87.5 ± 221

20.35 ± 34.05

4.75 ± 8.28

4.8 ± 6.56

0

15.9 ± 24.31

1.9 ± 6.85

1.75 ± 3.05

14.2 ± 26.03

0

0.45 ± 0.88

MI

109.37 ± 244

25.43 ± 36.48

11.87 ± 9.47

8.72 ± 6.64

0

28.90 ± 26.64

19 ± 15.55

5 ± 3.26

21.84 ± 29.87

0

1.8 ± 0.83

P

95 (90-99)

45 (40-51)

65 (59-69)

55 (50-60)

0

60 (54-66)

0

60 (54-66)

85 (79-89)

25 (21-29)

25 (20-29)

9

MA

81.05 ± 143

10.95 ± 22.34

12.8 ± 17.46

22.35 ± 34.10

0

6.9 ± 8.51

0

1.7 ± 1.86

36.45 ± 35.23

13 ± 25.34

1.3 ± 2.73

MI

85.31 ± 146

24.33 ± 28.61

19.69 ± 18.32

40.63 ± 37.31

0

11.5 ± 8.21

0

2.83 ± 1.58

42.88 ± 34.36

52 ± 22.71

5.2 ± 3.19

P

100 -

50 (45-56)

75 (69-80)

75 (69-80)

0

65 (59-69)

15 (11-20)

40 (35-47)

10 (6-15)

10 (6-15)

15 (11-20)

10

MA

189.1 ± 187

63.6 ± 152

19.7 ± 32.34

10.8 ± 10.92

0

54.15 ± 166

2.2 ± 7.64

4.1 ± 8.29

0.65 ± 2.30

0.55 ± 2.03

0.4 ± 1.09

MI

190.1 ± 187

127.21 ± 199

26.26 ± 35.14

14.4 ± 10.31

0

83.30 ± 203

14.66 ± 16.77

10.25 ± 10.71

6.5 ± 4.94

5.5 ± 4.94

2.66 ± 1.52

P

95 (90-99)

75 (69-80)

70 (65-74)

65 (59-69)

0

65 (59-69)

0

30 (26-36)

5 (1-8)

10 (6-15)

5 (1-8)

11

MA

111.6 ± 121

52.5 ± 68.55

27.7 ± 46.99

9.8 ± 16.29

0

19.9 ± 38.04

0

2.1 ± 4.21

0.1 ± 0.44

1.4 ± 6.02

0.1 ± 0.44

MI

117.47 ± 122

70 ± 71.16

39.57 ± 52.17

15.07 ± 18.28

0

30.61 ± 44.01

0

7 ± 5.13

2 ± 2

14 ± 18.38

2 ± 2

P

60 (54-66)

50 (45-56)

35 (32-40)

35 (32-40)

0

20 (16-26)

0

10 (6-15)

20 (16-26)

20 (16-26)

0

12

MA

12.55 ± 23.26

17.25 ± 39.95

3.6 ± 7.80

4.45 ± 10.59

0

4.2 ± 10.02

0

0.3 ± 0.97

1.25 ± 2.84

1.4 ± 3.66

0

MI

20.91 ± 27.28

34.5 ± 52.05

10.28 ± 10.60

12.71 ± 15.26

0

21 ± 12.90

0

3 ± 1.41

6.25 ± 3.09

7 ± 5.71

0

P

20 (16-26)

45 (40-51)

5 (1-8)

10 (6-15)

0

10 (6-15)

0

15 (11-20)

5 (1-8)

45 (40-51)

0

13

MA

3.2 ± 9.34

4.8 ± 11.83

0.1 ± 0.44

0.3 ± 0.97

0

0.4 ± 1.23

0

0.7 ± 2.10

0.1 ± 0.44

4.4 ± 8.18

0

MI

16 ± 16.73

10.66 ± 16.18

2 ± 2

3 ± 1.41

0

4 ± 0

0

4.66 ± 3.78

2 ± 2

9.77 ± 9.99

0

P

100 -

70 (65-74)

85 (79-89)

55 (50-60)

0

80 (76-88)

0

70 (65-74)

70 (65-74)

5 (1-8)

15 (11-20)

14

MA

195.2 ± 247

79.5 ± 130

42.3 ± 76.69

20.2 ± 51.85

0

59 ± 76.07

0

3.3 ± 4.25

7.65 ± 11.54

0.4 ± 1.78

1.6 ± 4.76

MI

198.20 ± 246

113.57 ± 144

49.76 ± 81.18

36.72 ± 66.64

0

73.75 ± 78.54

0

4.71 ± 4.39

10.92 ± 12.49

8 ± 8

10.66 ± 8.38

P

95 (90-99)

90 (86-96)

60 (54-66)

50 (45-56)

0

70 (65-74)

0

40 (35-47)

45 (40-51)

0

10 (6-15)

15

MA

112.4 ± 51.73

82.35 ± 84.85

13.4 ± 20.11

10.9 ± 17.05

0

48.35 ± 60.81

0

1.35 ± 1.87

4.05 ± 6.55

0

0.25 ± 0.71

MI

118.31 ± 45.67

91.5 ± 84.62

22.33 ± 21.93

21.8 ± 18.70

0

69.07 ± 62.15

0

3.37 ± 1.30

9 ± 7.21

0

2.5 ± 1.15

P

85 (54-66)

35 (32-40)

30 (26-36)

50 (45-56)

0

25 (21-29)

15 (11-20)

35 (32-40)

70 (65-74)

5 (1-8)

5 (1-8)

16

MA

93.4 ± 145

18.55 ± 40.59

3.2 ± 8.46

7.3 ± 10.75

0

8 ± 22.05

0.85 ± 2.80

3 ± 8.73

5.45 ± 7.10

0.15 ± 0.68

0.05 ± 0.22

MI

109.88 ± 104

53 ± 53.60

10.66 ± 12.81

14.6 ± 10.91

0

32 ± 35.29

5.66 ± 5.50

8.57 ± 13.22

7.78 ± 7.25

3 ± 3

1 ± 1

P

100 -

60 (54-66)

35 (32-40)

30 (26-36)

0

55 (50-60)

5 (1-8)

10 (6-15)

0

0

0

17

MA

153.25 ± 118

47.9 ± 62.67

7.1 ± 11.58

3.65 ± 8.48

0

28.95 ± 36.67

0.05 ± 0.22

0.15 ± 0.48

0

0

0

MI

158.25 ± 120

79.83 ± 63.26

20.28 ± 10.62

12.16 ± 12.20

0

52.63 ± 36.15

1 ± 1

1.5 ± 0.70

0

0

0

P

70 (65-74)

85 (54-66)

80 (76-88)

40 (35-47)

0

55 (50-60)

0

30 (26-36)

50 (45-56)

0

15 (11-20)

18

MA

12.15 ± 11.24

30.4 ± 52.74

11.4 ± 11.21

2.2 ± 3.98

0

3.6 ± 5.28

0

1 ± 2.15

4.7 ± 8.20

0

0.25 ± 0.71

MI

17.35 ± 9.34

35.76 ± 55.67

14.25 ± 10.76

5.5 ± 4.72

0

6.54 ± 5.64

0

3.33 ± 2.87

9.4 ± 9.64

0

1.66 ± 1.15

P

90 (86-96)

85 (54-66)

65 (59-69)

40 (35-47)

0

75 (69-80)

0

10 (6-15)

15 (11-20)

0

15 (11-20)

19

MA

34.35 ± 22.52

18.75 ± 14.71

8.7 ± 14.18

10.05 ± 28.94

0

6.9 ± 8.96

0

0.2 ± 0.61

0.25 ± 0.63

0

0.25 ± 0.71

MI

38.16 ± 20.31

22.05 ± 13.39

13.38 ± 15.62

25.12 ± 40.99

0

9.2 ± 9.29

0

2 ± 0

1.66 ± 0.57

0

1.66 ± 1.15

P

95 (90-99)

80 (76-88)

70 (65-74)

70 (65-74)

0

65 (59-69)

20 (16-26)

55 (50-60)

35 (32-40)

10 (6-15)

60 (55-66)

20

MA

101.1 ± 144

18.5 ± 19.37

19 ± 19.54

8.4 ± 9.38

0

28.45 ± 47.53

5.3 ± 11.62

2.9 ± 6.17

14.55 ± 29.46

0.1 ± 0.30

20.35 ± 44.17

MI

106.42 ± 146

23.12 ± 19.32

27.14 ± 18.69

12 ± 9.34

0

43.76 ± 54.54

26.5 ± 11.93

5.27 ± 7.86

41.57 ± 39.35

1 ± 0

33.91 ± 53.37

P

5 (1-8)

80 (76-88)

15 (11-20)

20 (16-26)

15 (11-20)

0

0

50 (45-56)

55 (50-60)

0

5 (1-9)

21

MA

0.1 ± 0.43

9.4 ± 8.45

1.4 ± 4.01

2.2 ± 5.77

0.4 ± 1.02

0

0

3.95 ± 6.51

21.9 ± 36.76

0

0.05 ± 0.21

MI

2 ± 2

11.75 ± 7.75

9.33 ± 7.02

11 ± 9.59

2.66 ± 1.15

0

0

7.9 ± 7.60

39.81 ± 43.27

0

1 ± 1

P

40 (35-47)

60 (54-66)

0

7 (4-11)

0

13 (9-18)

7 (4-11)

5 (1-8)

33 (29-39)

20 (16-26)

0

22

MA

68.93 ± 165

19.26 ± 44.91

0

13.33 ± 51.63

0

0.93 ± 2.71

0.8 ± 3.09

2.4 ± 4.25

4.93 ± 9.83

6.53 ± 20.09

0

MI

73.85 ± 171

32.11 ± 55.36

0

200 ± 200

0

7 ± 4.24

12 ± 12

4.5 ± 5.04

14.8 ± 12.47

32.66 ± 39.3

0

P

64 (61-69)

43 (39-49)

0

0

0

0

0

0

14 (11-19)

0

0

23

MA

76 ± 112

4.71 ± 7.25

0

0

0

0

0

0.07 ± 0.26

0.28 ± 0.82

0

0.07 ± 0.26

MI

118.22 ± 122

11 ± 7.34

0

0

0

0

0

0

2 ± 1.41

0

1 ± 1

P

60 (54-66)

20 (16-26)

13 (9-18)

20 (16-26)

0

0

0

30 (26-36)

60 (54-66)

0

0

24

MA

3.33 ± 4.13

0.8 ± 1.69

0.26 ± 0.70

0.46 ± 0.99

0

0

0

20.6 ± 44.96

47.73 ± 55.84

0

0

MI

5.55 ± 4.00

4 ± 1

2 ± 0

2.33 ± 0.57

0

0

0

38.62 ± 56.99

79.55 ± 51.09

0

0

P

20 (16-26)

30 (26-36)

15 (11-20)

25 (21-29)

0

20 (16-26)

0

20 (16-26)

10 (6-15)

5 (1-8)

35 (31-40)

25

MA

0.65 ± 1.53

0.5 ± 1

0.15 ± 0.36

0.35 ± 0.67

0

3.6 ± 12.96

0

0.65 ± 2.03

0.5 ± 1.67

2.7 ± 12.07

0.65 ± 1.38

MI

3.25 ± 1.89

1.66 ± 1.21

1 ± 0

1.4 ± 0.54

0

18 ± 26.82

0

3.25 ± 3.86

5 ± 2.82

54 ± 0

1.85 ± 1.86

P

80 (76-88)

100 -

50 (45-56)

30 (26-36)

10 (6-15)

70 (65-74)

0

40 (35-47)

60 (54-66)

0

0

26

MA

210.4 ± 240

161 ± 161

8.6 ± 9.47

2.4 ± 5.64

0.2 ± 0.63

28.2 ± 28.30

0

2.1 ± 3.03

31.6 ± 39.86

0

0

MI

263 ± 241

161 ± 161

17.2 ± 4.14

8 ± 8.71

2 ± 0

40.28 ± 25.17

0

5.25 ± 2.36

52.66 ± 39.09

0

0

P

50 (45-56)

80 (76-88)

60 (54-66)

30 (26-36)

0 0

50 (45-56)

0

0

80 (76-88)

10 (6-15)

20 (16-26)

27

MA

47.2 ± 64.86

24 ± 21.41

3 ± 3.91

1.8 ± 3.32

0

7.6 ± 14.13

0

0

5.4 ± 6.94

0.1 ± 0.31

0.2 ± 0.42

MI

94.4 ± 62.42

30 ± 19.59

5 ± 3.94

6 ± 3.46

0

15.2 ± 17.46

0

0

6.75 ± 7.18

1 ± 0

1 ± 0

P

100 -

100 -

77 (71-83)

11 (7-16)

0

77 (71-83)

11 (7-16)

22 (19-26)

0

0

33 (28-37)

28

MA

62.88 ± 41.14

21.33 ± 16.30

4 ± 3

0.22 ± 0.66

0

7.77 ± 7.03

0.66 ± 2

0.22 ± 0.44

0

0

0.77 ± 1.39

MI

60.88 ± 41.14

25.33 ± 16.30

5.14 ± 2.26

2 ± 0

0

10 ± 4.9

6 ± 0

1 ± 0

0

0

2.33 ± 1.52

P

80 (76-88)

100 -

40 (35-47)

20 (16-26)

0

20 (16-26)

0

0

80 (76-88)

0

0

29

MA

2.2 ± 2.28

40.8 ± 24.35

0.6 ± 0.89

0.4 ± 0.89

0

10 ± 22.36

0

0

1.2 ± 1.09

0

0

MI

2.75 ± 2.21

40.8 ± 24.35

1.5 ± 1

2 ± 0

0

50 ± 0

0

0

1.5 ± 1

0

0