Table 2.
Number of samplings, total specimens, species number or positive samplings per collection method at each type of point of entry (PoE) (Scenario 1) and at the invasive mosquito species (IMS)-colonised areas Natoye ( Aedes j. japonicus ) and Maasmechelen ( Ae. koreicus ) (Scenario 2) (period of sampling: July - October 2012)
|
PoE (Scenario 1) |
Storage sites for imported used tyres |
Shelters/greenhouses for imported plants/fruits/vegetables |
Parking lots at the country border |
Ports |
Airports |
|
|---|---|---|---|---|---|---|
| Number of sites | 5 | 5 | 4 | 3 | 3 | |
|
MMLP
1
|
N° trap weeks
2
|
19/19 |
16/19 |
8/14 |
10/12 |
11/11 |
|
Total specimens |
357 |
161 |
38 |
93 |
131 |
|
|
Species richness |
11 |
4 |
8 |
6 |
3 |
|
|
OT
1
|
N° samplings
3
|
36/46 |
40/45 |
35/37 |
26/27 |
27/28 |
|
Presence IMS eggs |
no |
no |
no |
no |
no |
|
|
LS
1
|
N° samplings
4
|
18 (7 PBS1) |
9 (7 PBS) |
5 (4 PBS) |
3 (3 PBS) |
7 (5 PBS) |
|
Total specimens |
602 |
0 |
0 |
0 |
0 |
|
| |
Species richness |
5 |
0 |
0 |
0 |
0 |
|
IMS-colonised areas (Scenario 2) |
Natoye
5
|
Maasmechelen
6
|
||||
| |
|
At colonised area |
Around colonised area |
At colonised area |
Around colonised area |
|
|
MMLP |
N° trap weeks |
5/5 |
NA |
M1: 14/16 & M2: 2/8 |
NA |
|
|
Total IMS specimens |
0 |
NA |
M1: 7 & M2: 1 |
NA |
||
|
OT |
N° samplings |
36/40 |
116/132 |
72/73 |
81/84 |
|
|
N° samplings with IMS eggs |
5/36 |
6/116 |
0/72 |
0/81 |
||
|
LS |
N° samplings |
14 (3 PBS) |
69 (18 PBS) |
58 (17 PBS) |
52 (23 PBS) |
|
| Total IMS specimens | 74 | 13 | 250 | 0 | ||
1MMLP = Mosquito Magnet Liberty Plus (CO2) trap, OT = oviposition trap, LS = larval sampling, PBS = potential breeding site (=a single vessel or a group of the same vessels (e.g. a stock of tyres, lucky bamboo containers in the same shelter) in which mosquito larvae can develop).
2N° of effective MMLP trap weeks/n° trap weeks planned.
3N° samplings with polystyrene piece found back/n° samplings planned.
4N° samplings with number of PBS sampled between brackets (a stock of tyres is one PBS, but at least 20 tyres were checked for larvae during each sampling).
5the colonised area at Natoye is located within 500 m from the used tyre company.
6the colonised area at Maasmechelen is located within 1 km from the industrial area ‘Op de Berg’; two MMLP traps were set-up (M1 and M2).