New Horizons in Insect Science Towards Sustainable Pest Management

Changes in Body Melanisation and Not Body Size Affect Mating Success in Drosophila immigrans 35

Wing length (mm)

Ma

ting

latency (m

in)

0

5

10

15

20

25

3. 03.2 3. 43.6 3. 84.0 4. 24.4

r = 0.26 ± 0.18 (ns) r = - 0.18 ± 0.19 (ns)

Small Larg e

a % Melanisation^

Ma

ting

latency (m

in)

0

10

20

30

40

20 30 40 50 60 70

Light

r = - 0.89 ± 0.08

Dark

r = - 0.92 ± 0.07

d

Wing length (mm)

Co

pula

tion

du

ra tion

(m

in)

45

50

55

60

65

3. 03.2 3. 43.6 3. 84.0 4. 24.4

r = - 0.24 ± 0.22 r = 0.16 ± 0.19

Small Larg e

b

Wing length (mm)

Fecundit

y / da

y

30

35

40

45

50

55

60

3. 03.2 3. 43.6 3. 84.0 4. 24.4

Small Larg e

r = - 0. 30 ± 0. 18 r = - 0. 26 ± 0. 21

c % Melanisation

Fecundi

ty / da

y

30

40

50

60

70

80

20 30 40 50 60 70

Light

r = 0.93 ± 0.07

Dark

r = 0.97 ± 0.04

f

% Melanisation

Co

pula

tion

du

ra tion

(m

in)

20

30

40

50

60

70

80

20 30 40 50 60 70

Light

r = 0.78 ± 0.12

Dark

r = 0.84 ± 0.10

e

Fig. 3 Correlations of mating related traits (mating latency, copulation duration and daily fecundity) with body size
( large vs. small; a–c) and with body melanisation (d–f) in assorted isofemale lines of D. immigrans