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Table 1 Comparisons of spermatophore mass, eupyrene sperm number, MSPs 1–3, and the principal component extracted from MSPs 1–3 (means ± 1 SD) between successful and unsuccessful males having competed for a single virgin female, including ranges for MSPs 1–3 and the principal component, and results of paired t-tests

From: Young male mating success is associated with sperm number but not with male sex pheromone titres

Trait

Successful

Unsuccessful

DF

T

P

a) Control

Mean ± SE

Range

Mean ± SE

Range

   

Spermatophore mass [mg]

0.468 ± 0.091

0.14–0.63

0.439 ± 0.136

0.18–0.79

40

1.140

0.2610

Euyprene sperm [n]

7686.2 ± 3000.5

2560–15616

4583.0 ± 2828.1

768 - 11264

40

4.901

<0.0001

MSP 1 [ng * 350 μl−1]

1680.9 ± 673.2

463–2967

1487.1 ± 819.5

208–3534

41

1.444

0.1565

MSP 2 [ng * 350 μl−1]

87.2 ± 42.5

23–195

96.5 ± 49.8

32–216

33

−0.987

0.3306

MSP 3 [ng * 350 μl−1]

5556.6 ± 2780.2

1533–12212

5159.8 ± 2889.7

765–12710

41

0.784

0.4378

PC MSP

−0.0007 ± 0.975

−1.9–1.8

−0.0413 ± 1.074

−2.6–1-7

33

0.208

0.8365

b) Blocked

Spermatophore mass [mg]

0.476 ± 0.090

0.25–0.65

0.457 ± 0.155

0.12–0.92

35

0.746

0.4609

Eupyrene sperm [n]

8732.4 ± 3429.6

2304–16384

4394.7 ± 2186.4

768–9728

35

6.990

<0.0001

MSP 1 [ng * 350 μl−1]

1726.7 ± 720.1

281–2832

1731.8 ± 903.7

259–3768

42

−0.038

0.9698

MSP 2 [ng * 350 μl−1]

83.3 ± 39.3

21–177

89.8 ± 41.6

23–163

38

−0.741

0.4632

MSP 3 [ng * 350 μl−1]

5595.3 ± 2959.9

1194–17842

5519.9 ± 3138.2

48–13555

42

0.149

0.8824

PC MSP

0.0067 ± 0.940

−3.4–1.4

−0.0823 ± 1.090

−2.8–1.7

38

0.526

0.6016

  1. Data are presented separately for control and olfaction-blocked females. Significant P-values are given in bold