5 Works

Data from: Hydrocarbon divergence and reproductive isolation in Timema stick insects

Tanja Schwander, Devin Arbuthnott, Regine Gries, Gerhard Gries, Patrik Nosil & Bernard J. Crespi
Background: Individuals commonly prefer certain trait values over others when choosing their mates. If such preferences diverge between populations, they can generate behavioral reproductive isolation and thereby contribute to speciation. Reproductive isolation in insects often involves chemical communication, and cuticular hydrocarbons, in particular, serve as mate recognition signals in many species. We combined data on female cuticular hydrocarbons, interspecific mating propensity, and phylogenetics to evaluate the role of cuticular hydrocarbons in diversification of Timema walking-sticks....

Data from: Early bursts of body size and shape evolution are rare in comparative data

Luke J. Harmon, Jonathan B. Losos, T. Jonathan Davies, Rosemary G. Gillespie, John L. Gittleman, W. Bryan Jennings, Kenneth H. Kozak, Mark A. McPeek, Franck Moreno-Roark, Thomas J. Near, Andy Purvis, Robert E. Ricklefs, Dolph Schluter, , Ole Seehausen, Brian L. Sidlauskas, Omar Torres-Carvajal, Jason T. Weir & Arne Ă˜. Mooers
George Gaylord Simpson famously postulated that much of life's diversity originated as adaptive radiations—more or less simultaneous divergences of numerous lines from a single ancestral adaptive type. However, identifying adaptive radiations has proven difficult due to a lack of broad-scale comparative datasets. Here, we use phylogenetic comparative data on body size and shape in a diversity of animal clades to test a key model of adaptive radiation, in which initially rapid morphological evolution is followed...

Data from: Neutral and selection-driven decay of sexual traits in asexual stick insects

Tanja Schwander, Bernard J. Crespi, Regine Gries & Gerhard Gries
Environmental shifts and lifestyle changes may result in formerly adaptive traits becoming non-functional or maladaptive. The subsequent decay of such traits highlights the importance of natural selection for adaptations, yet its causes have rarely been investigated. To study the fate of formerly adaptive traits after lifestyle changes, we evaluated sexual traits in five independently derived asexual lineages, including traits that are specific to males and therefore not exposed to selection. At least four of the...

Data from: Genes underlying altruism

Graham J. Thompson, Peter L. Hurd & Bernard J. Crespi
William D. Hamilton postulated the existence of 'genes underlying altruism', under the rubric of inclusive fitness theory, a half-century ago. Such genes are now poised for discovery. In this article we develop a set of intuitive criteria for the recognition and analysis of genes for altruism, and describe the first candidates for altruism genes from social insects and humans. We also provide evidence from a human population for genetically-based tradeoffs, underlain by oxytocin-system polymorphisms, between...

Data from: Targeting global conservation funding to limit immediate biodiversity declines

Anthony Waldron, Arne O. Mooers, Daniel C. Miller, Nate Nibbelink, David Redding, Tyler S. Kuhn, J. Timmons Roberts & John L. Gittleman
Inadequate funding levels are a major impediment to effective global biodiversity conservation and are likely associated with recent failures to meet United Nations biodiversity targets. Some countries are more severely underfunded than others and therefore represent urgent financial priorities. However, attempts to identify these highly underfunded countries have been hampered for decades by poor and incomplete data on actual spending, coupled with uncertainty and lack of consensus over the relative size of spending gaps. Here,...

Registration Year

  • 2013

Resource Types

  • Dataset


  • Simon Fraser University
  • University of Georgia
  • National Evolutionary Synthesis Center
  • University of Michigan-Ann Arbor
  • University of Groningen
  • National Center for Ecological Analysis and Synthesis
  • University of Alberta
  • University of Minnesota
  • University of Lausanne
  • University of California, Berkeley