Current Research

Evolution by natural selection requires three steps. New phenotypic variation 1) must arise, 2) must have an impact on fitness (survival or fecundity), and 3) must (ultimately) be heritable. The first step -- how new variation arises -- remains controversial. Traditionally, new phenotypes are ascribed to novel genotypes (mutants or recombinants). But developmental plasticity -- the same genotype yields different forms in different environments -- may be a much more important source of new phenotypes than generally recognized. This has renewed interest in its evolutionary significance. Development & evolution of claw asymmetry in fiddler crabs (Uca) (see Science 2004, Current Biology 2009, Philosophical Transactions 2016) Our work has yielded valuable insights into the causes and adaptive significance of several striking examples of developmental plasticity and our studies of the development, genetics and evolutionary history of right-left asymmetry variation have yielded some of the strongest evidence to date for a genes-as-followers mode of evolution (sometimes called genetic assimilation) -- a result that caught the attention of the Pharyngula blog. We continue to explore the interplay between developmental plasticity and evolution on both ecological time scales (via descriptive and experimental studies) and evolutionary time scales (via comparative studies).

(view citation metrics) Ongoing research includes: evolutionary origins of novel energy-storage mechanisms in ultrafast shrimp and amphipod claws limb and limb-muscle transformation in pre- and post-settlement barnacles comparative morphology of doubly asymmetric, rock-boring snapping shrimp identification of sound-producing invertebrates in coastal British Columbia role of learned, handed behavior in the evolution of morphological asymmetry development and evolution of morphological asymmetries in many taxa BMSC Web Cam Most of our research is done at the Bamfield Marine Sciences Centre, a magnificent field station on the west coast of Vancouver Island: West Side Bamfield & Barkley Sound, from BMSC Our research is funded by: