Table 3 Morphometric and morphological features of the third-stage larvae of the GIN of sheep observed in the present study using DNA analysis as the gold standard
Species/genus | Mean full body length (range, µm) | Standard deviation (µm) | Mean sheathed tail length (range, µm) | Standard deviation (µm) | Group (sheathed tail) | Shape of head | Shape of tail base | Shape of sheathed tail | Presence of sheathed tail filament |
|---|---|---|---|---|---|---|---|---|---|
Trichostrongylus spp. | 709 | 61 | 35 | 5 | Short (A) | Rounded | 1–3 tubercles or smooth | Conic | No |
(620–863) | (27–55) | ||||||||
Teladorsagia circumcincta | 795 | 52 | 39 | 3 | Short (A) | Flat/square, cranial inflexion | Smooth | Blunt | No |
(740–902) | (36–45) | ||||||||
Haemonchus contortus | 739 | 29 | 81 | 6 | Medium (B) | Bullet-shaped | Smooth and pointed | Slightly curved base | ?a |
(669–817) | (67–91) | ||||||||
Cooperia curticei | 814 | 39 | 59 | 5 | Medium (B) | Square/rounded, 2 refractile bodies | Smooth | Pointed | ?a |
(739–886) | (50–68) | ||||||||
Chabertia ovina | 791 | 37 | 137 | 17 | Long (C) | Rounded | Smooth | – | Yes, long |
(722–848) | (86–160) |