heritability and artificial selection on ambulatory dispersal distance in tetranychus urticae effects of density and maternal effects遗传和人工选择动态传播距离测定密度和母性效应的影响.pdfVIP

Heritability and Artificial Selection on Ambulatory Dispersal Distance in Tetranychus urticae : Effects of Density and Maternal Effects 1,2 3 ˜ 4 2 5 Ellyn Valery Bitume *, Dries Bonte , Sara Magalhaes , Gilles San Martin , Stefan Van Dongen , Fabien 1 1 1 2 Bach , Justin Michael Anderson , Isabelle Olivieri , Caroline Marie Nieberding ´ 1 Metapopulation, Conservation, and Co-evolution, Universite Montpellier 2, Montpellier, France, 2 Evolutionary Ecology and Genetics, Biodiversity Research Center, Earth ´ and Life Institute, Academie Louvain, Louvain-la-Neuve, Belgium, 3 Terrestrial Ecology Unit, Ghent University, Ghent, Belgium, 4 Centre for Environmental Biology, University of Lisbon, Lisbon, Portugal, 5 StatUA Statistics Center, University of Antwerp, Antwerp, Belgium Abstract Dispersal distance is understudied although the evolution of dispersal distance affects the distribution of genetic diversity through space. Using the two-spotted spider mite, Tetranychus urticae, we tested the conditions under which dispersal distance could evolve. To this aim, we performed artificial selection based on dispersal distance by choosing 40 individuals (out of 150) that settled furthest from the home patch (high dispersal, HDIS) and 40 individuals that remained close to the home patch (low dispersal, LDIS) with three replicates per treatment. We did not observe a response to selection nor a difference between treatments in life-history traits (fecundity, survival, longevity, and sex-ratio)