Combining the meiotic drive gene D and the translocation T1in the mosquito, Aedes Aegypti (L.). I. Sex-ratio distortion and fertility

✍ Scribed by A. M. Pearson; R. J. Wood

• Publisher: Springer Netherlands
• Year: 1980
• Tongue: English
• Weight: 556 KB
• Volume: 51
• Category: Article
• ISSN: 0016-6707
• DOI: 10.1007/bf00121612

✦ Synopsis

Sex-ratio distortion has been investigated in males carrying the Y(M)-linked meiotic-drive gene D, from three different strains (Bozo, Caracas and Trinidad), paired with Chipei X-chromosomes highly sensitive to D. The effect of D was tested on its own and also associated with a 1-3 translocation (designated TI). The fertility of maleshomozygous and heterozygous for the translocation, with and without D, was also investigated.

Distorter-translocation heterozygote (DTa/+) males with D from Trinidad produced more distorted sex-ratios (fewer females) in their progeny than the corresponding D/+ males. However, associating T1 with D from Bozo or Caracas had no effect on sexratio.

A comparison between Tl/+ and DTI/+ (D from Trinidad) indicated that mean fertility was no different in the presence of D, although there was more variability between families. However, DTI/T1 was substantially more fertile than T~/T~.

There was no correspondence in fertility between translocation homozygotes and heterozygotes with the same D factor. Highest homozygote fertility was observed in combination with Trinidad D.

Larval mortality had little impact on fertility, which was determined before the eggs hatched.