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Table 1 Morphometric features of 3rd larval stages of strongylid and non-strongylid nematode species identified by fecal culture

From: Identifying 3rd larval stages of common strongylid and non-strongylid nematodes (class: Nematoda) infecting Egyptian equines based on morphometric analysis

 

Cyathostomum s.l.

S. vulgaris

S. equinus

S. edentatus

T. axei

S. westeri

A) Total Length

 Mode (μm)A

370

608

605

562

487

471

 Median (μm)

606.5

602.5

628

624

556

474.5

 Minimum (μm)

370

521

563

562

487

457

 Maximum (μm)

670

650

686

704

594

514

 Mean (μm)

554.6

592.6

628.1

632.2

549

479.8

 SD

100.5

33

36

48.5

40.5

17.7

 SE

23.7

8.8

10

16.2

15.3

4.4

 CV

0.2

0.1

0.1

0.1

0.1

0.04

 MAD

34

16

23

38

28

11

 Skewness

−1

−0.6

0.02

0.3

−0.7

0.8

 SES

0.5

0.6

0.6

0.7

0.8

0.6

B) Body Width

 Mode (μm)B

23

26

26

27

21

14

 Median (μm)

24

23

27

28

21

14

 Minimum (μm)

14

12

24

24

18

7

 Maximum (μm)

28

26

31

30

22

15

 Mean (μm)

23

22

27

28

21

13

 SD

4.4

4.3

1.9

1.9

1.4

2.4

 SE

1

1.1

0.5

0.6

0.5

0.6

 CV

0.2

0.2

0.1

0.1

0.1

0.2

 MAD

2

2

1

1

1

1

 Skewness

−1.1

−1.4

0.1

−0.8

−2

−1.8

 SES

0.5

0.6

0.6

0.72

0.8

0.5

C) Esophagus

 Shape

Filariform

Filariform

Filariform

Filariform

Filariform

Filariform

 Mode (μm)C

167

134

162

155

152

249

 Median (μm)

168

134.5

161

159

160

264.5

 Minimum (μm)

101

84

151

134

151

140

 Maximum (μm)

194

145

167

180

170

325

 Mean (μm)

161

128

160

160

160.4

259.9

 SD

30.4

20

4.3

12.5

7.2

42.2

 SE

7

5

1.2

4.2

2.7

10

 CV

0.2

0.2

0.03

0.1

0.05

0.2

 MAD

13

7.5

2

4

7

17

 Skewness

−1.2

−1.6

−0.5

−0.7

0.01

−1.4

 SES

0.5

0.6

0.6

0.7

0.8

0.5

D) Gut

 IC

  Number

8

32

16

18–20

16

Poorly Defined IC

  Shape

Triangular IC

Triangular IC

Triangular IC

Indistinct IC

Indistinct IC

 Gut Length

  Mode (μm)D

248

321

264

257

465

150

  Median (μm)

248

345.5

280

280

425

240

  Minimum (μm)

139

190

239

257

310

150

  Maximum (μm)

266

398

352

325

465

276

  Mean (μm)

225.1

333.6

279.2

287.2

411.3

234.1

  SD

41

56.8

29.4

24.3

53.6

37.2

  SE

9.4

14.2

8.2

8.1

20.3

9

  CV

0.2

0.2

0.1

0.1

0.1

0.2

  MAD

15

22

16

18

36

23

  Skewness

−0.9

−1.8

1.1

0.4

−1.1

−1.3

  SES

0.5

0.6

0.6

0.7

0.8

0.6

  1. A,B,C,DMultiple modes exist (only the first one is reported). SD standard deviation, SE standard error, CV coefficent of variation, MAD median absolute deviation, SES standard error of skewness, IC Intestinal Cells, Cyathostomum s.l Cyathostomum sensu lato, S. vulgaris Strongylus vulgaris, S. equinus Strongylus equinus, S. edentatus Strongylus edentatus, T. axei Trichostrongylus axei, S. westeri Strongyloides westeri