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Table 3 Effect of tetracycline treatment of PF12 F1 females.

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

Pair

Egg hatch rate

Number of progeny

Sex ratio (proportion male)

Status

Control 1, no alternative food

    

PF12.3

0.215

14

0

SR

PF12.10

0.316

22

0

SR

Control 2, golden syrup

    

PF12.4

0.395

35

0

SR

PF12.8

0.266

22

0

SR

Tetracycline treatment

    

PF12.5

0.446

24

0.458

Cured

PF12.6

0.602

36

0.556

Cured

  1. Pre-treatment egg hatch rates and sex ratios are given in Table 2.