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Table 2 Species and sex composition of mosquitoes collected in BG-Sentinel and CDC light traps in Guangzhou, China

From: Comparative evaluation of the efficiency of the BG-Sentinel trap, CDC light trap and Mosquito-oviposition trap for the surveillance of vector mosquitoes

Study area

Species

Trap method

Sex ratio difference (P-value)b

BG-sentinel trap

CDC light trap

Total

Male

Female

F rate (95 % CI)a

Total

Male

Female

F rate (95 % CI)a

Tonghe (urban)

Number of trap days

864

   

864

    

Aedes albopictus

6211

3641

2570

0.41 [0.40, 0.43]

1389

790

599

0.43 [0.41, 0.46]

0.23

Culex quinquefasciatus

11,365

7588

3777

0.33 [0.32, 0.34]

8071

4758

3313

0.41 [0.40, 0.42]

< 0.0001

Armigeres subalbatus

46

25

21

0.46 [0.32, 0.60]

83

49

34

0.41 [0.31, 0.52]

0.60

Toxorhynchites splendens

1

1

0

n.a.

8

5

3

0.38 [0.14, 0.69]

n.a.

Total No.

17,623

11,255

6368

 

9551

5602

3951

  

Liangtian (suburban)

Number of trap days

876

   

864

    

Aedes albopictus

2181

1200

981

0.45 [0.43, 0.47]

385

195

190

0.49 [0.44, 0.54]

0.11

Culex quinquefasciatus

18,442

12,517

5925

0.32 [0.31, 0.33]

31,288

16,233

15,055

0.48 [0.48, 0.49]

< 0.0001

Armigeres subalbatus

152

91

61

0.40 [0.33, 0.48]

184

114

70

0.38 [0.31, 0.45]

0.70

Toxorhynchites splendens

3

1

2

0.67 [0.21, 0.94]

14

10

4

0.29 [0.12, 0.55]

0.51

Total No.

20,778

13,809

6969

 

31,871

16,552

15,319

  
  1. aF rate is defines as number of females over total
  2. bDifference between the two trap-types. χ 2-test or Fisher exact test if any number is < 5