5 Works

Data from: Phylogenetic tests reject Emery’s rule in the evolution of social parasitism in yellowjackets and hornets (Hymenoptera: Vespidae, Vespinae)

Federico Lopez-Osorio, Adrien Perrard, Kurt M. Pickett, James M. Carpenter & Ingi Agnarsson
Social parasites exploit the brood-care behaviour and social structure of one or more host species. Within the social Hymenoptera there are different types of social parasitism. In its extreme form, species of obligate social parasites, or inquilines, do not have the worker caste and depend entirely on the workers of a host species to raise their reproductive offspring. The strict form of Emery's rule states that social parasites share immediate common ancestry with their hosts....

Data from: Limited role of character displacement in the coexistence of congeneric Anelosimus spiders in a Madagascan montane forest

Ingi Agnarsson, Nicholas J. Gotelli, Diego Agostini & Matjaž Kuntner
Evolutionary and ecological theory predicts that closely related and similar species should coexist infrequently because speciation is more likely to occur allopatrically than sympatrically, and because co-occurring species with similar traits may compete for limited resources, leading to competitive exclusion or character displacement. Here we study the unusual coexistence of 10 similar congeneric species of Anelosimus spiders within a small forest fragment in Madagascar. We asked if these species radiated in sympatry or allopatry, and...

Data from: A tradeoff between precopulatory and postcopulatory trait investment in male cetaceans

James P. Dines, Sarah L. Mesnick, Katherine Ralls, Laura J. May Collado, Ingi Agnarsson, Matthew D. Dean & Laura May-Collado
Mating with multiple partners is common across species, and understanding how individual males secure fertilization in the face of competition remains a fundamental goal of evolutionary biology. Game theory stipulates that males have a fixed budget for reproduction that can lead to a trade-off between investment in precopulatory traits like body size, armaments, and ornaments, and postcopulatory traits such as testis size and spermatogenic efficiency. Recent theoretical and empirical studies have shown that if males...

Data from: Subordinate plants sustain the complexity and stability of soil micro-food webs in natural bamboo forest ecosystems

Yuanhu Shao, Xiaoli Wang, Jie Zhao, Jianping Wu, Weixin Zhang, Deborah A. Neher, Yanxia Li, Yiping Lou & Shenglei Fu
Subordinate plants have a significant impact on soil organisms in primary successional floodplains and grassland ecosystems, but their role in subtropical forest ecosystems remains unclear. An experiment was conducted in a subtropical forest to test the hypothesis that removal of shrubs or subordinate arbour tree species would reduce the complexity and stability of the soil micro-food web. Principal response curves (PRCs) were performed to assess the responses of soil microbial and nematode communities to plant...

Data from: Climate change impacts on bumblebees converge across continents

Jeremy T. Kerr, Alana Pindar, Paul Galpern, Laurence Packer, Stuart M. Roberts, Pierre Rasmont, Oliver Schweiger, Sheila R. Colla, Leif L. Richardson, David L. Wagner, Lawrence F. Gall, Derek S. Sikes & Alberto Pantoja
For many species, geographical ranges are expanding toward the poles in response to climate change, while remaining stable along range edges nearest the equator. Using long-term observations across Europe and North America over 110 years, we tested for climate change–related range shifts in bumblebee species across the full extents of their latitudinal and thermal limits and movements along elevation gradients. We found cross-continentally consistent trends in failures to track warming through time at species’ northern...

Registration Year

  • 2015

Resource Types

  • Dataset


  • University of Vermont
  • Helmholtz Centre for Environmental Research
  • National Museum
  • Nanchang Institute of Technology
  • National Museum of Natural History
  • Natural History Museum of Los Angeles County
  • Institute of Subtropical Agriculture
  • University of Alaska Fairbanks
  • Southwest Fisheries Science Center
  • Agricultural Research Service