Selection by parasites for clonal diversity and mixed mating
Open Access
- 29 November 1994
- journal article
- Published by The Royal Society in Philosophical Transactions Of The Royal Society B-Biological Sciences
- Vol. 346 (1317), 271-281
- https://doi.org/10.1098/rstb.1994.0144
Abstract
On theoretical grounds, coevolutionary interactions with parasites can select for cross-fertilization, even when there is a twofold advantage gained by reproducing through uniparental means. The suspected advantage of cross-fertilization stems from the production of genetically rare offspring, which are expected to be more likely to escape infection by coevolving enemies. In the present study, we consider the effects that parasites have on parthenogenetic mutants in obligately sexual, dioecious populations. Computer simulations show that repeated mutation to parthenogenesis can lead to the accumulation of clones with different resistance genotypes, and that a moderately diverse set of clones could competitively exclude the ancestral sexual subpopulation. The simulations also show that, when there are reasonable rates of deleterious mutation, Muller’s ratchet combined with coevolutionary interactions with parasites can lead to the evolutionary stability of cross-fertilization. In addition, we consider the effects that parasites can have on the evolution of uniparental reproduction in cosexual populations. Strategy models show that parasites and inbreeding depression could interact to select for evolutionarily stable reproductive strategies that involve mixtures of selfed and outcrossed progeny.Keywords
This publication has 34 references indexed in Scilit:
- The genomic mutation rate for fitness in DrosophilaNature, 1992
- Fitness of RNA virus decreased by Muller's ratchetNature, 1990
- INBREEDING DEPRESSION, GENETIC LOAD, AND THE EVOLUTION OF OUTCROSSING RATES IN A MULTILOCUS SYSTEM WITH NO LINKAGEEvolution, 1990
- Sex and Death in ProtozoaPublished by Cambridge University Press (CUP) ,1989
- Short-term selection for recombination among mutually antagonistic speciesNature, 1987
- Patterns in plant parthenogenesisPublished by Springer Nature ,1987
- The interdependence of mating structure and inbreeding depressionTheoretical Population Biology, 1986
- The Evolution of Self-Fertilization in Plants: A Population Genetic ModelThe American Naturalist, 1984
- Seed Dispersal of the Tropical Tree, Platypodium Elegans, and the Escape of its Seedlings from Fungal PathogensJournal of Ecology, 1983
- AVERAGE EXCESS AND AVERAGE EFFECT OF A GENE SUBSTITUTIONAnnals of Eugenics, 1941