Table 1 Mean values of morphometrical traits in natural populations of South America or Africa investigated with the isofemale line technique

From: Quantitative trait analysis and geographic variability of natural populations of Zaprionus indianus, a recent invader in Brazil

Population

n

Latitude

Wing length

Thorax length

Wing/thorax ratio

Sternopleural bristles

   

Female

Male

Female

Male

Female

Male

Female

Male

South America

Rio, 1999

23

22.6S

300.97±0.47

296.23±0.54

137.98±0.24

137.33±0.24

2.181±0.003

2.157±0.003

19.58±0.24

18.61±0.23

Salvador, 1999

10

13.0S

301.08±1.47

293.92±1.04

137.34±0.61

135.96±0.41

2.192±0.01

2.162±0.01

19.73±0.26

18.43±0.17

Rio, 2000

11

22.6S

297.35±0.93

291.93±0.96

137.47±0.56

136.35±0.67

2.163±0.01

2.142±0.01

19.45±0.40

18.36±0.29

Belem, 2002

11

1.3S

295.09±1.40

289.93±1.21

137.15±0.53

136.36±0.46

2.152±0.01

2.126±0.01

19.25±0.38

18.32±0.29

Montevideo, 2004

20

34.5S

296.78±0.86

291.28±0.90

136.75±0.35

135.55±0.41

2.170±0.004

2.149±0.004

19.72±0.19

18.39±0.23

Mean

  

298.25±1.19

292.66±1.10

137.34±0.20

136.31±0.30

2.172±0.007

2.147±0.006

19.55±0.09

18.42±0.05

Africa

Sao Tome, 2001

11

0.2N

277.53±1.10

272.04±1.55

132.04±0.45

130.65±0.57

2.102±0.005

2.082±0.006

19.55±0.54

18.09±0.37

Sao Tome, 2003

15

0.2N

272.88±0.89

268.35±0.78

130.67±0.49

129.13±0.35

2.089±0.010

2.078±0.01

20.09±0.33

18.57±0.27

Benin, 2000

10

6.2N

282.24±0.78

277.24±0.71

129.88±0.64

128.36±0.55

2.174±0.008

2.161±0.008

20.54±0.26

18.87±0.27

Cape Town, 2002

12

33.6S

289.10±0.92

283.87±1.07

132.00±0.38

130.97±0.41

2.190±0.005

2.168±0.005

19.51±0.38

18.39±0.33

Madagascar, 2003

22

18.5S

287.49±0.93

283.15±0.93

132.35±0.42

131.33±0.35

2.173±0.006

2.157±0.006

20.58±0.25

19.64±0.21

Mean

  

281.85±3.03

276.93±3.04

131.39±0.48

130.09±0.57

2.146±0.021

2.129±0.020

20.05±0.23

18.71±0.26

Total mean

  

290.05±3.14

284.79±3.03

134.36±1.02

133.2±1.08

2.159±0.011

2.138±0.010

19.80±0.14

18.57±0.14

Intercontinental comparison (t-test)

  

5.04**

4.87**

11.53***

9.67***

1.l9 ns

0.85 ns

2.05 ns

1.08 ns

  1. n=number of lines. Lengths are in mm × 100. Comparisons of the two geographic groups are made with Student's t-test (n=5 in each group). Level of significance: ns: non significant; **P<0.01; ***P<0.001.
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