Table 3
Measurements of main morphological characters of specimens of Acanthogyrus (Acanthosentis) tilapiae described by Baylis, 1947 [19] and redescribed by Troncy, 1970 [97] and Amin, 1978 [7], A. (A.) papilio described by Troncy and Vassiliadès, 1974 [97], and specimens (all stages of maturity combined) from this study collected from Coptodon guineensis at Sebkha Imlili. n = number of specimens studied. na = no data available. Merged data indicate no precision for male or female. L = length. W = width. All measurements are in μm unless indicated otherwise.
| A. (A.) tilapiae |
A. (A.) cf. tilapiae |
A. (A.) papilio |
||||
|---|---|---|---|---|---|---|
| Reference | Baylis, 1947 [19] | Troncy, 1970 [97] | Amin, 1978 [7] | This study | Troncy & Vassiliadès, 1974 [99] | |
| n | ~65 | 18 males | 27 males | 50 males | 2 males | |
| 15 females (dead-suspect pseudoparasitism) | 52 females | 63 females | 2 immature females | |||
| Trunk (mm) L × W | Male | 2.5–3.5 × 0.8–1.1 | Largest = 1.53 | 1.2–3.4 × 0.4–0.84 | 0.4–2.7 × 0.1 × 0.6 | 1 × 0.35 |
| Female | 3–8 × 0.38–1.88 | Largest = 2 | 1.2–5 × 0.32–1.32 | 0.3–5.8 × 0.1–0.9 | 1.025 × 0.27 (n = 1 immature) | |
| Proboscis L × W | Male | na | 65–110 × 60–100 | 90 × 64 | 60–400 × 40–400 | na |
| Female | 110 × 100 (n = 2) | 93–106 × 86–96 | 30–100 × 70 × 100 | |||
| Hook ant. Blade/root | Male | na | 36–48/25–30 | 45 | 27–43/17–30 | 35–40/20–22 |
| Female | 46–48 | 48–58 | 26–52/17–39 | |||
| Hook middle Blade/root | Male | na | 12–20/20 | 16 | 10–17 | 8–11/5–6 |
| Female | 12 | 13–22 | 10–17 | |||
| Hook post. Blade/root | Male | na | 10–18/12 | 13 | 11–18/10–18 | 8–11/5–6 |
| Female | 10 | 13–16 | 10–21/8–16 | |||
| Testis ant. L × W | Large | 230–260 × 220–250 | 224–770 × 112–616 | 19–492 × 20–295 | ~170 × 170 | |
| Testis post. L × W | 224–700 | 33–485 × 16–280 | ~200 × 200 | |||
| Säefftigen’s pouch L × W | na | 70–616 (L) | 150–250 × 50–75 | 150 × 40 | ||
| Cement gland | 140–200 | 140–210 × 100–150 | 130 × 90 | |||
| Egg | 26–28 × 11 | 30 × 12 | 16–22 × 6–10 | 22–36 × 10–21 | na | |
| Body spines | Male | 32–34 | na | 28–38 | 33–40 | na |
| Number of rows | Female | 28–42 | 25–40 | |||
| Body spines L | Minute | 5 | 1–2 | 1–2 | ||
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