3 Works

Data from: Incomplete loss of a conserved trait: function, latitudinal cline, and genetic constraints

Anne M. Royer, Colin Kremer, Kola George, Samuel G. PĂ©rez, Douglas W. Schemske & Jeffrey K. Conner
Retention of nonfunctional traits over evolutionary time is puzzling, because the cost of trait production should drive loss. Indeed, several studies have found nonfunctional traits are rapidly eliminated by selection. However, theory suggests that complex genetic interactions and a lack of genetic variance can constrain evolution, including trait loss. In the mustard family Brassicaceae the conserved floral condition includes four long and two short stamens, but we show that short stamens in the highly self-pollinating...

Data from: Song learning and cognitive ability are not consistently related in a songbird

Rindy C. Anderson, William A. Searcy, Susan Peters, Melissa Hughes, Adrienne L. DuBois & Stephen Nowicki
Learned aspects of song have been hypothesized to signal cognitive ability in songbirds. We tested this hypothesis in hand-reared song sparrows (Melospiza melodia) that were tutored with playback of adult songs during the critical period for song learning. The songs developed by the 19 male subjects were compared to the model songs to produce two measures of song learning: the proportion of notes copied from models and the average spectrogram cross-correlation between copied notes and...

Data from: Invasion of novel habitats uncouples haplo-diplontic life cycles

Stacy A. Krueger-Hadfield, Nicole M. Kollars, James E. Byers, Thomas W. Greig, Mareike Hammann, David C. Murray, Courtney J. Murren, Allan E. Strand, Ryuta Terada, Florian Weinberger & Erik E. Sotka
Baker's Law predicts uniparental reproduction will facilitate colonization success in novel habitats. While evidence supports this prediction among colonizing plants and animals, few studies have investigated shifts in reproductive mode in haplo-diplontic species in which both prolonged haploid and diploid stages separate meiosis and fertilization in time and space. Due to this separation, asexual reproduction can yield the dominance of one of the ploidy stages in colonizing populations. We tested for shifts in ploidy and...

Registration Year

  • 2016
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Affiliations

  • College of Charleston
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  • Princeton University
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  • University of Miami
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  • GEOMAR Helmholtz Centre for Ocean Research Kiel
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  • Kagoshima University
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  • Florida Atlantic University
    1