17 Works

Data from: Similarity in temporal variation in sex-biased dispersal over short and long distances in the dark-eyed junco, Junco hyemalis

Eric B. Liebgold, Nicole M. Gerlach & Ellen D. Ketterson
Patterns of sex-biased dispersal are typically consistent within taxa, e.g., female-biased in birds and male-biased in mammals, leading to theories about the evolutionary pressures that lead to sex-biased dispersal. However, generalizations about the evolution of sex biases tend to overlook that dispersal is mediated by ecological factors that vary over time. We examined potential temporal variation in between- and within-population dispersal over an 11-year period in a bird, the dark-eyed junco (Junco hyemalis). We measured...

Data from: Genomics of Compositae crops: reference transcriptome assemblies, and evidence of hybridization with wild relatives

Kathryn A. Hodgins, Zhao Lai, Luiz O. Oliveira, David W. Still, Moira Scascitelli, Michael S. Barker, Nolan C. Kane, Hannes Dempewolf, Alex Kozik, Richard V. Kesseli, John M. Burke, Richard W. Michelmore & Loren H. Rieseberg
Although the Compositae harbours only two major food crops, sunflower and lettuce, many other species in this family are utilized by humans and have experienced various levels of domestication. Here we have used next generation sequencing technology to develop 15 reference transcriptome assemblies for Compositae crops or their wild relatives. These data allow us to gain insight into the evolutionary and genomic consequences of plant domestication. Specifically, we performed Illumina sequencing of Cichorium endivia, Cichorium...

Data from: Temporal variation favors the evolution of generalists in experimental populations of Drosophila melanogaster

Catriona Condon, Brandon S. Cooper, Sam Yeaman, & Michael J. Angilletta
In variable environments, selection should favor generalists that maintain fitness across a range of conditions. However, costs of adaptation may generate fitness trade-offs and lead to some compromise between specialization and generalization that maximizes fitness. Here, we evaluate the evolution of specialization and generalization in 20 populations of Drosophila melanogaster experimentally evolved in constant and variable thermal environments for 3 years. We developed genotypes from each population at two temperatures after which we measured fecundity...

Data from: Inter-locus sexually antagonistic coevolution creates indirect selection for increased recombination

Amy Lynn Dapper & Curtis M. Lively
The ubiquity of recombination in nature is a paradox because it breaks up combinations of alleles favored by natural selection. Theoretical work has shown that antagonistic coevolution between hosts and parasites can result in rapid fluctuations in epistasis, which can create a short-term advantage to recombination. Here we show that another kind of antagonistic coevolution, inter-locus sexually antagonistic coevolution (SAC), can also create indirect selection for modifiers that increase the rate of recombination, and that...

Data from: Faster clonal turnover in high-infection habitats provides evidence for parasite-mediated selection

Dorota Paczesniak, Sofia Adolfsson, Katri Liljeroos, Kirsten Klappert, Curt M. Lively & Jukka Jokela
According to the Red Queen hypothesis for sex, parasite-mediated selection against common clones counterbalances the reproductive advantage of asexual lineages, which would otherwise outcompete sexual conspecifics. Such selection on the clonal population is expected to lead to a faster clonal turnover in habitats where selection by parasites is stronger. We tested this prediction by comparing the genetic structure of clonal and sexual populations of freshwater snail Potamopyrgus antipodarum between years 2003 and 2007 in three...

Data from: Phase III of Wright's Shifting Balance Process and the variance among demes in migration rate

Michael J. Wade
Interdemic selection by the differential migration of individuals out from demes of high fitness and into demes of low fitness (Phase III) is one of the most controversial aspects of Wright's Shifting Balance Theory. I derive a relationship between Phase III migration and the interdemic selection differential, S, and show its potential effect on FST. The relationship reveals a diversifying effect of interdemic selection by Phase III migration on the genetic structure of a metapopulation....

Data from: Genetic architecture of isolation between two species of Silene with sex chromosomes and Haldane's rule

Jeffery Paul Demuth, Rebecca J. Flanagan & Lynda F. Delph
Examination of the genetic architecture of hybrid breakdown can provide insight into the genetic mechanisms of commonly observed isolating phenomena such as Haldane’s rule. We used line-cross analysis to dissect the genetic architecture of divergence between two plant species that exhibit Haldane’s rule for male sterility and rarity, Silene latifolia and Silene diclinis. We made 15 types of crosses, including reciprocal F1, F2, backcrosses, and later-generation crosses, grew the seeds to flowering, and measured the...

Data from: Genomic evidence for the parallel evolution of coastal forms in the Senecio lautus complex

Federico Roda, Luke Ambrose, Gregory M. Walter, Huanle L. Liu, Andrea Schaul, Andrew Lowe, Pieter B. Pelser, Peter Prentis, Loren H. Rieseberg & Daniel Ortiz-Barrientos
Instances of parallel ecotypic divergence where adaptation to similar conditions repeatedly cause similar phenotypic changes in closely related organisms are useful for studying the role of ecological selection in speciation. Here we used a combination of traditional and next generation genotyping techniques to test for the parallel divergence of plants from the Senecio lautus complex, a phenotypically variable groundsel that has adapted to disparate environments in the South Pacific. Phylogenetic analysis of a broad selection...

Data from: Genomic islands of divergence are not affected by geography of speciation in sunflowers.

Sebastien Renaut, Christopher J. Grassa, Sam Yeaman, Zhao Lai, Nolan K. Kane, Brook T. Moyers, John E. Bowers, John M. Burke & Loren H. Rieseberg
Genomic studies of speciation often report the presence of highly differentiated genomic regions interspersed within a milieu of weakly diverged loci. The formation of these speciation islands is generally attributed to reduced inter-population gene flow near loci under divergent selection, but few studies have critically evaluated this hypothesis. Here, we report on transcriptome scans among four recently diverged pairs of sunflower (Helianthus) species that vary in the geographical context of speciation. We find that genetic...

Data from: Consumer-resource interactions and the evolution of migration

Devin M. Drown, Mark F. Dybdahl & Richard Gomulkiewicz
Theoretical studies have demonstrated that selection will favor increased migration when fitnesses vary both temporally and spatially, but it is far from clear how pervasive those theoretical conditions are in nature. While consumer-resource interactions are omnipresent in nature and can generate spatial and temporal variation, it is unknown even in theory whether these dynamics favor the evolution of migration. We develop a mathematical model to address whether and how migration evolves when variability in fitness...

Data from: Localized hotspots drive continental geography of abnormal amphibians on U.S. wildlife refuges

Mari K. Reeves, Kimberly A. Medley, Alfred E. Pinkney, Marcel Holyoak, Pieter T. J. Johnson & Michael J. Lannoo
Amphibians with missing, misshapen, and extra limbs have garnered public and scientific attention for two decades, yet the extent of the phenomenon remains poorly understood. Despite progress in identifying the causes of abnormalities in some regions, a lack of knowledge about their broader spatial distribution and temporal dynamics has hindered efforts to understand their implications for amphibian population declines and environmental quality. To address this data gap, we conducted a nationwide, 10-year assessment of 62,947...

Data from: Variation in costs of parasite resistance among natural host populations

Stuart K. J. R. Auld, Rachel M. Penczykowski, Jessica Housley Ochs, Dylan C. Grippi, Spencer R. Hall & Meghan A. Duffy
Organisms that can resist parasitic infection often have lower fitness in the absence of parasites. These costs of resistance can mediate host evolution during parasite epidemics. For example, large epidemics will select for increased host resistance. In contrast, small epidemics (or no disease) can select for increased host susceptibility when costly resistance allows more susceptible hosts to outcompete their resistant counterparts. Despite their importance for evolution in host populations, costs of resistance (which are also...

Data from: Brood ball-mediated transmission of microbiome members in the dung beetle, Onthophagus taurus (Coleoptera: Scarabaeidae)

Anne M. Estes, David J. Hearn, Emilie C. Snell-Rood, Michele Feindler, Karla Feeser, Tselotie Abebe, Julie C. Dunning Hotopp & Armin P. Moczek
Insects feeding on plant sap, blood, and other nutritionally incomplete diets are typically associated with mutualistic bacteria that supplement missing nutrients. Herbivorous mammal dung contains more than 86% cellulose and lacks amino acids essential for insect development and reproduction. Yet one of the most ecologically necessary and evolutionarily successful groups of beetles, the dung beetles (Scarabaeinae) feeds primarily, or exclusively, on dung. These associations suggest that dung beetles may benefit from mutualistic bacteria that provide...

Data from: Information content is more important than sensory system or physical distance in guiding the long-term evolutionary relationships between signaling modalities in Sceloporus lizards

Alison G. Ossip-Klein, Jesualdo A. Fuentes, Diana K. Hews & Emília P. Martins
Long-term signal evolution is shaped by a variety of selective pressures including the need to convey additional information or to improve message transfer to specific receivers or through multiple environments. Here, we test the relative importance of information and sensory modality in shaping the long-term evolution of multimodal signals in Sceloporus lizards. To broadcast identity at territorial boundaries, male Sceloporus use both visual motion (headbob) and chemical signals, whereas they use color (blue belly patches)...

Data from: Shared selective pressure and local genomic landscape lead to repeatable patterns of genomic divergence in sunflowers

Sebastien Renaut, Gregory L. Owens & Loren H. Rieseberg
The repeated evolution of traits in organisms facing similar environmental conditions is considered to be fundamental evidence for the role of natural selection in moulding phenotypes. Yet, aside from case studies of parallel evolution and its genetic basis, the repeatability of evolution at the level of the whole genome remains poorly characterized. Here, through the use of transcriptome sequencing, we examined genomic divergence for three pairs of sister species of sunflowers. Two of the pairs...

Data from: Genome skimming reveals the origin of the Jerusalem Artichoke tuber crop species: neither from Jerusalem nor an Artichoke

Dan G. Bock, Nolan C. Kane, Daniel P. Ebert & Loren H. Rieseberg
The perennial sunflower Helianthus tuberosus, known as Jerusalem Artichoke or Sunchoke, was cultivated in eastern North America before European contact. As such, it represents one of the few taxa that can support an independent origin of domestication in this region. Its tubers were adopted as a source of food and forage when the species was transferred to the Old World in the early 1600s, and are still used today. Despite the cultural and economic importance...

Data from: Poor resource quality lowers transmission potential by changing foraging behaviour

Rachel M. Penczykowski, Brian C. P. Lemanski, Robert Drew Sieg, Spencer R. Hall, Jessica Housley Ochs, Julia Kubanek & Meghan A. Duffy
Resource quality can have conflicting effects on the spread of disease. High quality resources could hinder disease spread by promoting host immune function. Alternatively, high quality food might enhance the spread of disease through other traits of hosts or parasites. Thus, to assess how resource quality shapes epidemics, we need to delineate mechanisms by which food quality affects key epidemiological traits. Here, we disentangle effects of food quality on ‘transmission potential’ – a key component...

Registration Year

  • 2013
    17

Resource Types

  • Dataset
    17

Affiliations

  • Indiana University Bloomington
    17
  • University of British Columbia
    6
  • University of Colorado Boulder
    3
  • University of Georgia
    2
  • Georgia Institute of Technology
    2
  • University of California, Davis
    2
  • University of Massachusetts Amherst
    1
  • University of Adelaide
    1
  • University of Queensland
    1
  • The University of Texas at Arlington
    1