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Table 2 The inheritance of the SR trait in P. japonica.

From: Discovery and identification of a male-killing agent in the Japanese ladybird Propylea japonica (Coleoptera: Coccinellidae)

Line

Number of eggs

Egg hatch rate

Number of progeny

Sex ratio (proportion male)

Status

PF12.2

165

0.285

20

0

SR

PF12.3

91

0.275

17

0

SR

PF12.4

89

0.202

10

0

SR

PF12.5

46

0.413

13

0

SR

PF12.6

117

0.248

14

0

SR

PF12.7

79

0.266

13

0

SR

PF12.8

70

0.229

11

0

SR

PF12.10

120

0.225

11

0

SR

  1. Data from initial crosses of PF12 F1 females, prior to treatments with tetracycline.