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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)

From: Implementation of surveillance of invasive mosquitoes in Belgium according to the ECDC guidelines

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

  1. 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).
  2. 2N° of effective MMLP trap weeks/n° trap weeks planned.
  3. 3N° samplings with polystyrene piece found back/n° samplings planned.
  4. 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).
  5. 5the colonised area at Natoye is located within 500 m from the used tyre company.
  6. 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).