Wolbachia–induced ‘hybrid breakdown’ in the two–fspotted spider miteTetranychus urticaeKoch
Open Access
- 7 October 2000
- journal article
- Published by The Royal Society in Proceedings Of The Royal Society B-Biological Sciences
- Vol. 267 (1456), 1931-1937
- https://doi.org/10.1098/rspb.2000.1232
Abstract
The most common post–zygotic isolation mechanism between populations of the phytophagous mite Tetranychus urticae is ‘hybrid breakdown’, i.e. when individuals from two different populations are crossed, F1 hybrid females are produced, but F2 recombinant male offspring suffer increased mortality. Two spotted spider mites collected from two populations, one on rose and the other on cucumber plants, were infected with Wolbachia bacteria. These bacteria may induce cytoplasmic incompatibility in their hosts: uninfected (U) females become reproductively incompatible with infected (W) males. We report on the effect of Wolbachia infections in intra–and interstrain crosses on (i) F1 mortality and sex ratios (a test for cytoplasmic incompatibility), and (ii) the number of haploid offspring and mortality in clutches of F1 virgins (a test for hybrid breakdown). U x W crosses within the rose strain exhibited partial cytoplasmic incompatibility. More interestingly, F2 males suffered increased mortality, a result identical to the hybrid breakdown phenomenon. The experiments were repeated using females from the cucumber strain. In interstrain U x W and U x U crosses, hybrid breakdown was much stronger in the former (80 versus 26%).This is the first report of a Wolbachia infection causing a hybrid breakdown phenotype. Our results show that Wolbachia infections can contribute to reproductive incompatibility between populations of T.urticae.Keywords
This publication has 31 references indexed in Scilit:
- Wolbachia Pipientis: Microbial Manipulator of Arthropod ReproductionAnnual Review of Microbiology, 1999
- Wolbachia infection and incompatibility dynamics in experimental selection linesJournal of Evolutionary Biology, 1999
- Nucleus–cytoplasm interactions causing reproductive incompatibility between two populations of Tetranychus quercivorus Ehara et Gotoh (Acari: Tetranychidae)Heredity, 1995
- Influence of microbe‐associated parthenogenesis on the fecundity of Trichogramma deion and T. pretiosumEntomologia Experimentalis et Applicata, 1993
- Nuclear‐nuclear and nuclear‐cytoplasmic interactions contribute to the reproductive incompatibility between two strains of the twospotted spider miteEntomologia Experimentalis et Applicata, 1989
- Geographic variations and combining abilities in the two‐spotted spider mite, Tetranychus urticaeEntomologia Experimentalis et Applicata, 1985
- A case of hybrid inviability in the two-spotted spider mite, Tetranychus urticaeEntomologia Experimentalis et Applicata, 1983
- PARTIAL REPRODUCTIVE INCOMPATIBILITY BETWEEN POPULATIONS OF SPIDER MITES (ACARINA: TETRANYCHIDAE)Entomologia Experimentalis et Applicata, 1976
- Intersterility as a Consequence of Insecticide Selections in Tetranychus urticae Koch (Acari: Tetranychidae)Nature, 1966
- GENETIC AFFINITIES BETWEEN ADJACENT POPULATIONS OF SPIDER MITES (TETRANYCHUS URTICAE KOCH)Entomologia Experimentalis et Applicata, 1965