Assessment of mating competitiveness of LR[<i>w</i>Pip(Is)] males under semi-field conditions.

<p>In each confrontation, 200 field females were mixed with each of the four following field to LR[<i>w</i>Pip(Is)] males ratios: 1:0 (200 field males), 1:1 (200 field males and 200 LR[<i>w</i>Pip(Is)] males), 1:5 (200 field males and 1000 LR[<i>w</i>Pip(Is)] males) and 0:1 (200 LR[<i>w</i>Pip(Is)] males). The trials of the 1:0 and 0:1 ratios were performed in April; two trials for the 1:1 ratio were performed in April and four in December; whilst for the 1:5 ratio two trials were performed in April and three in December. Expected frequency of infertile egg rafts (in black) was calculated assuming equal competitiveness of LR[<i>w</i>Pip(Is)] and field males. Total embryonic mortality (HR = 0%) was noted in all infertile egg rafts.