4 Works

Data from: Shape-shift: semicircular canal morphology responds to selective breeding for increased locomotor activity

Heidi Schutz, Heather A. Jamniczky, Benedikt Hallgrímsson, & Theodore Garland
Variation in semicircular canal morphology correlates with locomotor agility among species of mammals. An experimental evolutionary mouse model was used to test the hypotheses that semicircular canal morphology (1) evolves in response to selective breeding for increased locomotor activity, (2) exhibits phenotypic plasticity in response to early-onset chronic exercise, and (3) is unique in individuals possessing the minimuscle phenotype. We examined responses in canal morphology to prolonged wheel access and selection in laboratory mice from...

Data from: Assortative flocking in crossbills and implications for ecological speciation

Julie W. Smith, Stephanie M. Sjoberg, Matthew C. Mueller & Craig W. Benkman
How reproductive isolation is related to divergent natural selection is a central question in speciation. Here we focus on several ecologically specialised taxa or “call types” of red crossbills (Loxia curvirostra complex), one of the few groups of birds providing much evidence for ecological speciation. Call types differ in bill sizes and feeding capabilities, and also differ in vocalizations, such that contact calls provide information on crossbill phenotype. We found that two call types of...

Data from: Consistency and variation in phenotypic selection exerted by a community of seed predators

Craig W. Benkman, Julie W. Smith, Monika Maier, Leif Hansen & Matt V. Talluto
Phenotypic selection that is sustained over time underlies both anagenesis and cladogenesis, but the conditions that lead to such selection and what causes variation in selection are not well known. We measured the selection exerted by three species of predispersal seed predators of lodgepole pine (Pinus contorta latifolia) in the South Hills, Idaho and found that net selection on different cone and seed traits exerted by red crossbills (Loxia curvirostra) and cone borer moths (Eucosma...

Data from: A global perspective on Campanulaceae: biogeographic, genomic, and floral evolution

Andrew A. Crowl, Nicholas W. Miles, Clayton J. Visger, Kimberly Hansen, Tina Ayers, Rosemarie Haberle & Nico Cellinese
PREMISE OF THE STUDY: The Campanulaceae are a diverse clade of flowering plants encompassing more than 2300 species in myriad habitats from tropical rainforests to arctic tundra. A robust, multigene phylogeny, including all major lineages, is presented to provide a broad, evolutionary perspective of this cosmopolitan clade. METHODS: We used a phylogenetic framework, in combination with divergence dating, ancestral range estimation, chromosome modeling, and morphological character reconstruction analyses to infer phylogenetic placement and timing of...

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