20 Works

Data from: Shell geometry and habitat determination in extinct and extant turtles (Reptilia: Testudinata)

Roger B. J. Benson, Gábor Domokos, Peter L. Várkonyi & Robert R. Reisz
A number of means, including forelimb proportions and shell bone histology have been used to infer the paleoecology of extinct turtles. However, the height to width ratio of the shell (as a one-parameter shell model) has been dismissed because of its unreliability, and more complex aspects of shell geometry have generally been overlooked. Here we employ a more reliable, three-parameter geometric model of the shell outline in anterior view as a means to assess turtle...

Data from: The Chlamydiales pangenome revisited: structural stability and functional coherence

Fotis E. Psomopoulos, Victoria I. Siarkou, Nikolas Papanikolaou, Ioannis Iliopoulos, Athanasios S. Tsaftaris, Christos A. Ouzounis & Vasilis J. Promponas
The entire publicly available set of 37 genome sequences from the bacterial order Chlamydiales has been subjected to comparative analysis in order to reveal the salient features of this pangenome and its evolutionary history. Over 2,000 protein families are detected across multiple species, with a distribution consistent to other studied pangenomes. Of these, there are 180 protein families with multiple members, 312 families with exactly 37 members corresponding to core genes, 428 families with peripheral...

Data from: A study of canalization and developmental stability in the sternopleural bristle system of Drosophila melanogaster

Ian Dworkin
Among the explanations for minimizing the effects of extraneous variation has been canalization and developmental stability. However, there is little agreement as to whether these two processes reflect a common set of mechanisms. This confusion is inflated due to the lack of consensus as to a precise definition of canalization. In this study, canalization in the sternopleural bristle system is used to investigate the relationships between measures of canalization and developmental stability by comparing how...

Data from: Resistance to a bacterial parasite in the Crustacean Daphnia magna shows Mendelian segregation with dominance

Pepijn Luijckx, Harris Fienberg, David Duneau & Dieter Ebert
The influence of host and parasite genetic background on infection outcome is a topic of great interest because of its pertinence to theoretical issues in evolutionary biology. In the present study we use a classical genetics approach to examine the mode of inheritance of infection outcome in the crustacean Daphnia magna when exposed to the bacterial parasite Pasteuria ramosa. In contrast to previous studies in this system we use a clone of P. ramosa, not...

Data from: Population divergence along lines of genetic variance and covariance in the invasive plant Lythrum salicaria in eastern North America

Robert I. Colautti & Spencer C. H. Barrett
Evolution during biological invasion may occur over contemporary timescales, but the rate of evolutionary change may be inhibited by a lack of standing genetic variation for ecologically relevant traits and by fitness trade-offs among them. The extent to which these genetic constraints limit the evolution of local adaptation during biological invasion has rarely been examined. To investigate genetic constraints on life-history traits, we measured standing genetic variance and covariance in 20 populations of the invasive...

Data from: Genetic architecture and adaptive significance of the selfing syndrome in Capsella

Tanja Slotte, Khaled Michel Hazzouri, David L Stern, Peter Andolfatto & Stephen I. Wright
The transition from outcrossing to predominant self-fertilization is one of the most common evolutionary transitions in flowering plants. This shift is often accompanied by a suite of changes in floral and reproductive characters termed the selfing syndrome. Here, we characterize the genetic architecture and evolutionary forces underlying evolution of the selfing syndrome in Capsella rubella following its recent divergence from the outcrossing ancestor Capsella grandiflora. We conduct genotyping by multiplexed shotgun sequencing and map floral...

Data from: Evidence for canalization of Distal-less function in the leg of Drosophila melanogaster

Ian Dworkin
A considerable body of theory pertaining to the evolution of canalization has emerged recently, yet there have been few empirical investigations of their predictions. To address this, patterns of canalization and trait correlation were investigated under the individual and joint effects of the introgression of a loss-of-function allele of the Distal-less gene and high-temperature stress on a panel of iso-female lines. Variation was examined for number of sex comb teeth and the length of the...

Data from: Sexual conflict and antagonistic coevolution across water strider populations

Jennifer C. Perry & Locke Rowe
Microevolutionary studies have demonstrated sexually antagonistic selection on sexual traits, and existing evidence supports a macroevolutionary pattern of sexually antagonistic coevolution. Two current questions are how antagonistic selection within populations scales to divergence among populations, and to what extent intraspecific divergence matches species-level patterns. To address these questions, we conducted an intraspecific comparative study of sexual armaments and mating behaviours in a water strider (Gerris incognitus) in which male genitals grasp resistant females and female...

Data from: The effect of deleterious mutations and age on recombination in Drosophila melanogaster

Katherine Tedman-Aucoin & Aneil F. Agrawal
At the population level, recombination mediates the efficiency with which selection can eliminate deleterious mutations. At the individual level, deleterious alleles may influence recombination, which would change the rate at which linkage disequilibrium is eroded and thereby alter the efficiency with which deleterious alleles are purged. Here we test whether the presence of a deleterious allele on one autosome affects recombination on another autosome. We find that deleterious alleles not only alter the rate but...

Data from: It's a family matter: molecular phylogenetics of Atheriniformes and the polyphyly of surf silversides (Family: Notocheiridae)

Devin D. Bloom, Peter Unmack, Atila E. Gosztonyi, Kyle R. Piller, Nathan R. Lovejoy & Peter J. Unmack
Phylogenetic relationships among families of Atheriniformes have long been problematic. The affinities of one of the most enigmatic lineages, surf silversides (Notocheiridae), have proven particularly elusive due to this taxon’s unique morphology and rarity in museum collections. In this study, we use mitochondrial and nuclear sequence data to generate a phylogeny for seven of the eight families of Atheriniformes. Our results reveal that four families within Atheriniformes (Atherinopsidae, Notocheiridae, Atherinidae, Melanotaeniidae) are not monophyletic. Most...

Data from: Population divergence along lines of genetic variance and covariance in the invasive plant Lythrum salicaria in eastern North America

Robert I. Colautti & Spencer C. H. Barrett
Evolution during biological invasion may occur over contemporary timescales, but the rate of evolutionary change may be inhibited by a lack of standing genetic variation for ecologically relevant traits and by fitness trade-offs among them. The extent to which these genetic constraints limit the evolution of local adaptation during biological invasion has rarely been examined. To investigate genetic constraints on life-history traits, we measured standing genetic variance and covariance in 20 populations of the invasive...

Data from: Genetic architecture and adaptive significance of the selfing syndrome in Capsella

Tanja Slotte, Khaled Michel Hazzouri, David L Stern, Peter Andolfatto & Stephen I. Wright
The transition from outcrossing to predominant self-fertilization is one of the most common evolutionary transitions in flowering plants. This shift is often accompanied by a suite of changes in floral and reproductive characters termed the selfing syndrome. Here, we characterize the genetic architecture and evolutionary forces underlying evolution of the selfing syndrome in Capsella rubella following its recent divergence from the outcrossing ancestor Capsella grandiflora. We conduct genotyping by multiplexed shotgun sequencing and map floral...

Data from: Resistance to a bacterial parasite in the Crustacean Daphnia magna shows Mendelian segregation with dominance

Pepijn Luijckx, Harris Fienberg, David Duneau, Dieter Ebert & P Luijckx
The influence of host and parasite genetic background on infection outcome is a topic of great interest because of its pertinence to theoretical issues in evolutionary biology. In the present study we use a classical genetics approach to examine the mode of inheritance of infection outcome in the crustacean Daphnia magna when exposed to the bacterial parasite Pasteuria ramosa. In contrast to previous studies in this system we use a clone of P. ramosa, not...

Data from: A study of canalization and developmental stability in the sternopleural bristle system of Drosophila melanogaster

Ian Dworkin
Among the explanations for minimizing the effects of extraneous variation has been canalization and developmental stability. However, there is little agreement as to whether these two processes reflect a common set of mechanisms. This confusion is inflated due to the lack of consensus as to a precise definition of canalization. In this study, canalization in the sternopleural bristle system is used to investigate the relationships between measures of canalization and developmental stability by comparing how...

Data from: Shell geometry and habitat determination in extinct and extant turtles (Reptilia: Testudinata)

Roger B. J. Benson, Gábor Domokos, Peter L. Várkonyi & Robert R. Reisz
A number of means, including forelimb proportions and shell bone histology have been used to infer the paleoecology of extinct turtles. However, the height to width ratio of the shell (as a one-parameter shell model) has been dismissed because of its unreliability, and more complex aspects of shell geometry have generally been overlooked. Here we employ a more reliable, three-parameter geometric model of the shell outline in anterior view as a means to assess turtle...

Data from: The Chlamydiales pangenome revisited: structural stability and functional coherence

Fotis E. Psomopoulos, Victoria I. Siarkou, Nikolas Papanikolaou, Ioannis Iliopoulos, Athanasios S. Tsaftaris, Christos A. Ouzounis & Vasilis J. Promponas
The entire publicly available set of 37 genome sequences from the bacterial order Chlamydiales has been subjected to comparative analysis in order to reveal the salient features of this pangenome and its evolutionary history. Over 2,000 protein families are detected across multiple species, with a distribution consistent to other studied pangenomes. Of these, there are 180 protein families with multiple members, 312 families with exactly 37 members corresponding to core genes, 428 families with peripheral...

Data from: Evidence for canalization of Distal-less function in the leg of Drosophila melanogaster

Ian Dworkin
A considerable body of theory pertaining to the evolution of canalization has emerged recently, yet there have been few empirical investigations of their predictions. To address this, patterns of canalization and trait correlation were investigated under the individual and joint effects of the introgression of a loss-of-function allele of the Distal-less gene and high-temperature stress on a panel of iso-female lines. Variation was examined for number of sex comb teeth and the length of the...

Data from: Sexual conflict and antagonistic coevolution across water strider populations

Jennifer C. Perry & Locke Rowe
Microevolutionary studies have demonstrated sexually antagonistic selection on sexual traits, and existing evidence supports a macroevolutionary pattern of sexually antagonistic coevolution. Two current questions are how antagonistic selection within populations scales to divergence among populations, and to what extent intraspecific divergence matches species-level patterns. To address these questions, we conducted an intraspecific comparative study of sexual armaments and mating behaviours in a water strider (Gerris incognitus) in which male genitals grasp resistant females and female...

Data from: The effect of deleterious mutations and age on recombination in Drosophila melanogaster

Katherine Tedman-Aucoin & Aneil F. Agrawal
At the population level, recombination mediates the efficiency with which selection can eliminate deleterious mutations. At the individual level, deleterious alleles may influence recombination, which would change the rate at which linkage disequilibrium is eroded and thereby alter the efficiency with which deleterious alleles are purged. Here we test whether the presence of a deleterious allele on one autosome affects recombination on another autosome. We find that deleterious alleles not only alter the rate but...

Data from: It's a family matter: molecular phylogenetics of Atheriniformes and the polyphyly of surf silversides (Family: Notocheiridae)

Devin D. Bloom, Peter Unmack, Atila E. Gosztonyi, Kyle R. Piller, Nathan R. Lovejoy & Peter J. Unmack
Phylogenetic relationships among families of Atheriniformes have long been problematic. The affinities of one of the most enigmatic lineages, surf silversides (Notocheiridae), have proven particularly elusive due to this taxon’s unique morphology and rarity in museum collections. In this study, we use mitochondrial and nuclear sequence data to generate a phylogeny for seven of the eight families of Atheriniformes. Our results reveal that four families within Atheriniformes (Atherinopsidae, Notocheiridae, Atherinidae, Melanotaeniidae) are not monophyletic. Most...

Registration Year

  • 2011
    20

Resource Types

  • Dataset
    20

Affiliations

  • University of Toronto
    20
  • University of Crete
    2
  • Princeton University
    2
  • University of Cambridge
    2
  • Aristotle University of Thessaloniki
    2
  • University of Cyprus
    2
  • University of Basel
    2
  • Budapest University of Technology and Economics
    2
  • Uppsala University
    2
  • Southeastern Louisiana University
    2