Genetic evidence for biparental males in haplo-diploid predator mites (Acarina: Phytoseiidae)
✍ Scribed by W. Helle; H. R. Bolland; R. Arendonk; R. Boer; G. G. M. Schulten; V. M. Russell
- Book ID
- 104629221
- Publisher
- Springer Netherlands
- Year
- 1978
- Tongue
- English
- Weight
- 516 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0016-6707
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✦ Synopsis
The haplo-diploid situation in Amblyseius bibens Blommers and Phytoseitdus persintilis Athias-Henriot was examined by genetic means. By irradiation of haploid males it was found that radiation effects are transmitted from the fathers to daughters and sons, indicating the biparental origin of the latter. However, the results of a study of the transmission of a gene for insecticide resistance in P. persimilis points to a uniperental and impaternate origin 0 finales. Based on these genetic data, it is postulated for A. bibens and P. persimilis that males and females orginate from fertilized eggs. The haploid condition of males in both species is suggested as resulting from the loss of the paternal set of chromosomes, shortly after syngamy. It is concluded that earlier claims on the occurrence of arrhenotoky in phytoseiid mites are premature, if not faulty.