G. W. A. Constable

Parthenogenesis, sexual conflict, and selection on fertilization rates in switching environments

This study models the evolution of gamete size and fertilization rates in switching environments, showing transitions from isogamy to anisogamy to oogamy through evolutionary branching and sexual conflict.

The evolution of parthenogen fertilization rates in switching environments: from facultative cell-fusion to oogamy

This paper develops a mathematical model explaining the evolution of parthenogen fertilization rates and reproductive modes through coevolution of fertilization rate and cell size.

Maternal transmission as a microbial symbiont sieve, and the absence of lactation in male mammals

This paper uses mathematical models to show that uniparental vertical transmission of the microbiome acts as a sieve against deleterious symbionts, leading to selection against male lactation in mammals.

Parthenogenesis and the Evolution of Anisogamy

This paper extends previous models of anisogamy evolution by incorporating parthenogenesis, showing it can stabilize isogamy and lead to asexual dominance through biased sex ratios or mutations.

Genetic diversity in facultatively sexual populations and its implications for the origins of self-incompatibility in algae and fungi

The paper mathematically analyzes how self-incompatibility affects mating probabilities and genetic diversity in facultatively sexual populations, showing its potential evolutionary advantages.

Switching environments, synchronous sex, and the evolution of mating types

This paper develops a model of synchronous environmental switching to study the evolution of mating types in populations, finding deviations from previous asynchronous theories under slow switching.

Invasion and extinction dynamics of mating types under facultative sexual reproduction

The paper develops a population genetic model to study mating type dynamics under facultative sexual reproduction, finding that the average rate of sexual reproduction correlates with the number of mating types.

Drift-Induced Selection Between Male And Female Heterogamety

The paper shows that drift-induced selection, not neutrality, drives evolutionary transitions between male and female heterogamety by favoring dominant sex-determining chromosomes.