Table 1.
Occurrence of larvae of Amirthalingamia macracantha (Joyeux et Baer, 1935) in tilapia farms monitored in 2021.
| Farm | Tilapia species | Total weight of fish examined and marketed (tons) | No. of larvae collected | Prevalence (%) | Mean intensity | Mean abundance |
|---|---|---|---|---|---|---|
| A | Oreochromis niloticus × O. aureus | 139 | 5 | 1.7–3.3 | 1 | 0.02–0.03 |
| B | O. niloticus × O. aureus | 143 | 3 | 3.3–6.7 | 1 | 0 |
| C | O. niloticus × O. aureus | 386 | 1 | 6.3 | 1 | 0.06 |
| D | O. niloticus | 162 | 111 | 1.2–83.3 | 1–8 | 0.01–0.83 |
| E | O. niloticus | 9 | 0 | 0 | 0 | 0 |
| F |
Oreochromis sp. O. niloticus × O. aureus |
65 | 0 | 0 | 0 | 0 |
| 61 | 0 | 0 | 0 | 0 | ||
| G | Oreochromis sp. | 661 | 1 | 1.7 | 1 | 0.02 |
| H |
Oreochromis sp. O. niloticus × O. aureus |
88 | 0 | 0 | 0 | 0 |
| 207 | 0 | 0 | 0 | 0 | ||
| I | O. niloticus × O. aureus | 175 | 0 | 0 | 0 | 0 |
| J | O. niloticus × O. aureus | 534 | 2 | 1.7–3.3 | 1 | 0.02–0.03 |
| K | O. niloticus × O. aureus | 360 | 0 | 0 | 0 | 0 |
| L | O. niloticus × O. aureus | 494 | 2 | 3.3 | 1 | 0.03 |
| M |
O. niloticus × O. aureus O. niloticus |
448 | 0 | 0 | 0 | 0 |
| 10 | 0 | 0 | 0 | 0 | ||
| N | O. niloticus × O. aureus | 663 | 0 | 0 | 0 | 0 |
| O | O. niloticus × O. aureus | 262 | 0 | 0 | 0 | 0 |
| P | O. niloticus × O. aureus | 343 | 0 | 0 | 0 | 0 |
| Q | O. niloticus × O. aureus | 117 | 0 | 0 | 0 | 0 |
| R | O. niloticus × O. aureus | 2 | 0 | 0 | 0 | 0 |
| S | O. niloticus × O. aureus | 2 | 0 | 0 | 0 | 0 |