Open Access
Table 2
Morphological measurements of Gyrodactylus magadiensis n. sp. from the Magadi tilapia, Alcolapia grahami collected from Lake Magadi, Kenya. Data are presented alongside data for the only other previously described Gyrodactylus species from Kenya. Data compiled from previous study directly transposed as noted by author.
| Measurement | G. magadiensis n. sp. |
G. malalai |
|---|---|---|
| n = 24 |
n = 18 |
|
| Present study | Přikrylová et al. [55] | |
| Total body length | 267 ± 53 (202–387) | 792 ± 74.8 (666–876) |
| Total body width | 65 ± 17.6 (41.4–100) | 118 ± 13.7 (98–136) |
| Pharynx length | 21.1 ± 4.6 (13.8–29.7) | 42.5 ± 6.2 (34–49.5) |
| Pharynx width | 19.7 ± 4 (13.6–28.2) | 37.2 ± 6.4 (26.5–44) |
| Posterior pharynx length | 15.6 ± 2 (13.5–18) | |
| Posterior pharynx width | 13.2 ± 2.2 (11–15) | |
| MCO length | 11.3 ± 1.9 (9.6–14) | |
| MCO width | 8.5 ± 1.3 (6.9–10.2) | |
| MCO spines | 1L, 6S | 1L, 4–5S |
| Hamulus | ||
| Total length | 62.8 ± 5.6 (53.6–73.7) | 109 ± 3.9 (102–116.5) |
| Aperture | 31 ± 2.2 (27.3–35.3) | |
| Point shaft width | 6.9 ± 0.9 (5.3–8.7) | |
| Point length | 24.2 ± 2.4 (19.9–29.5) | 40.2 ± 2.9 (36–49) |
| Distal shaft width | 3.5 ± 0.5 (2.6–4.6) | |
| Shaft length | 38.7 ± 2.2 (34.9–43.6) | 74.5 ± 2.8 (68.5–78) |
| Inner curve length | 24.9 ± 2.3 (21.4–30.2) | |
| Aperture angle | 60 ± 7.4 (50.1–78.1) | |
| Point curve angle | 23.7 ± 5.4 (11.1–36.4) | |
| Inner aperture angle | 66.8 ± 8.5 (55.9–85.5) | |
| Root length | 22.3 ± 3.4 (16.9–29.9) | 45 ± 5.5 (32.5–54) |
| Ventral bar | ||
| Length | 27.5 ± 2.7 (22.6–33.3) | |
| Width | 20.8 ± 3.5 (14.6–26.4) | 16 ± 1.5 (23.5–28.5) |
| Process to mid–length | 3.5 ± 0.9 (2.1–5.1) | |
| Mid–length | 5.2 ± 1 (3.5–7) | 8.3 ± 0.6 (7.5–9.5) |
| Process length | 3 ± 0.5 (2–4) | |
| Membrane length | 18.7 ± 1.6 (15.9–22.8) | 14.5 ± 1.4 (12.5–16.5) |
| Dorsal bar | ||
| Length | 2.6 ± 0.5 (2.1–3.6) | 2.3 ± 0.2 (2–2.5) |
| Width | 13 ± 1.9 (9.8–17.8) | 23.5 ± 1.1 (22.5–25) |
| Marginal hook | ||
| Total length | 27.7 ± 2.5 (23.4–31) | 32 ± 0.6 (31.5–33) |
| Shaft length | 23.1 ± 2.3 (18.9–26) | 23.5 ± 0.7 (23–24.5) |
| Sickle length | 5.4 ± 0.4 (4.7–6.1) | 8.5 ± 0.3 (8–9) |
| Sickle point width | 4 ± 0.5 (3–4.7) | 6 ± 0.3 (5.5–6.5) |
| Toe length | 1.8 ± 0.2 (1.5–2.2) | |
| Sickle distal width | 3.4 ± 0.3 (2.9–4) | 7.3 ± 0.5 (6.5–8) |
| Aperture | 4.4 ± 0.5 (3.6–5.1) | 8 ± 0.5 (7.5–9) |
| Instep/arch height | 0.8 ± 0.1 (0.6–1) | |
| Filament loop | 8 ± 0.8 (6.5–9.2) | |
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