Table 2. Comparison of years needed to eliminate Baylisascaris procyonis egg population by applying different intervention strategies (host removal, anthelminthic treatment and faeces removal) with different treatment coverages (i.e. percentage of hosts/parasites/eggs removed per day), on both native and introduced raccoon (Procyon lotor) host populations.
| Treatment coverage (%) | Native population | Introduced population | ||||
|---|---|---|---|---|---|---|
| Time (yrs) to reach equilibrium through: | Time (yrs) to reach equilibrium through: | |||||
| host removala | anthelmintic treatment | faeces removal | host removal | anthelmintic treatment | faeces removal | |
| 0.01 | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc |
| 0.05 | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc |
| 0.1 | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc |
| 0.2 | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc |
| 0.3 | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc |
| 0.35 | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc | no egg eliminationc |
| 0.36 | 44 | no egg eliminationc | no egg eliminationc | 43b | no egg eliminationc | no egg eliminationc |
| 0.37 | 30 | no egg eliminationc | no egg eliminationc | 31b | no egg eliminationc | no egg eliminationc |
| 0.39 | 22 | no egg eliminationc | no egg eliminationc | 21 b | no egg eliminationc | no egg eliminationc |
| 0.396 | 20 | no egg eliminationc | no egg eliminationc | 20 b | no egg eliminationc | no egg eliminationc |
| 0.397 | 20 | no egg eliminationc | no egg eliminationc | 19 b | no egg eliminationc | no egg eliminationc |
| 0.4 | - | no egg eliminationc | no egg eliminationc | 19 | no egg eliminationc | no egg eliminationc |
| 0.5 | - | no egg eliminationc | no egg eliminationc | 11 | no egg eliminationc | no egg eliminationc |
| 0.8 | - | no egg eliminationc | no egg eliminationc | 6 | no egg eliminationc | no egg eliminationc |
| 1 | - | no egg eliminationc | no egg eliminationc | 5 | no egg eliminationc | no egg eliminationc |
| 3 | - | no egg eliminationc | no egg eliminationc | 3 | no egg eliminationc | no egg eliminationc |
| 5 | - | no egg eliminationc | no egg eliminationc | 3 | no egg eliminationc | no egg eliminationc |
| 5.5 | - | 41 | no egg eliminationc | 3 | 28 | no egg eliminationc |
| 7.5 | - | 15 | no egg eliminationc | 3 | 10 | no egg eliminationc |
| 10 | - | 10 | no egg eliminationc | 3 | 7 | no egg eliminationc |
| 30 | - | 6 | 49 | 3 | 4 | 39 |
| 50 | - | 5 | 26 | 3 | 4 | 20 |
| 80 | - | 5 | 20 | 3 | 3 | 16 |
| 100 | - | 5 | 19 | 3 | 3 | 14 |
a treatment coverages causing hosts’ extinction has not been investigated
b no host extinction
c elimination of the egg population/equilibrium of the system is not reached within 50 years