Table 3.
Distribution of preadult Lepeophtheirus salmonis at 18 days post-infestation
| Group of lice | Experiment 1 | Experiment 2 | ||||||
|---|---|---|---|---|---|---|---|---|
| All | Body | Fins | Gills | All | Body | Fins | Gills | |
| Pad I of total | 68 (294) | 88 (228) | 49 (40) | 30 (26) | 66 (329) | 87 (206) | 63 (55) | 38 (62) |
| Female of pad I | 33 (102) | 30 (68) | 78 (31) | 8 (2) | 35 (115) | 30 (62) | 87 (48) | 0 (0) |
| Pad I on filament | 10 (29) | 5 (12) | 25 (10) | 27 (7) | 21 (69) | 6 (12) | 38 (21) | 58 (36) |
| Pad I with visible blood | 16 (48) | 13 (30) | 0 (0) | 69 (18) | 24 (80) | 13 (27) | 0 (0) | 85 (53) |
| Pad I on filament with visible blood in intestine | 1 (2) | 0 (0) | 0 (0) | 8 (2) | 9 (30) | 0 (0) | 0 (0) | 48 (30) |
Notes: Preadult (pad) I lice sampled from 10 and 9 fish (Experiment 1 and 2, respectively) were investigated in more detail. The percentage and absolute numbers (in parentheses) of pad I lice sampled from all body parts of the fish (all) and separated into different sampling places (body, fins, gills) are shown for Experiment 1 and 2. The table shows the overall percentage of pad I of all lice (pad I and chalimus II), what percentage of these were females, the percentage of pad I lice found on a filament, the percentage of lice with visible blood in the intestine as well as the percentage of pad I lice with both, blood filled intestine and a filament