Patterns of mating-system evolution in hermaphroditic animals: correlations among selfing rate, inbreeding depression, and the timing of reproduction.

摘要: In hermaphrodites, traits that influence the selfing rate can coevolve with inbreeding depression, leading to emergence of evolutionary syndromes. Theory predicts a negative correlation between depression and across species. This prediction has only been examined validated in vascular plants. Furthermore, rates are often influenced by environmental conditions (e.g., lack mates or pollinators), species predicted evolve mechanisms buffer this variation. We extend previous studies mating-system syndromes two ways. First, we assembled new dataset on Basommatophoran snails (17 species, including data 12 species). Second, measured how responded variation mate availability. Specifically, quantified waiting time before (i.e., long onset reproduction is delayed absence mates). Selfing were negatively correlated both time. Species stronger exhibited longer times. These patterns obtained Basommatophorans still hold when eight other hermaphroditic animals. Our results support hypothesis selection drives evolution The reaction norm availability key target natural context.