10 Works

Data from: Local adaptation and evolutionary potential along a temperature gradient in the fungal pathogen Rhynchosporium commune

Tryggvi S. Stefansson, Bruce A. McDonald & Yvonne Willi
To predict the response of plant pathogens to climate warming, data are needed on current thermal adaptation, the pathogen’s evolutionary potential and the link between them. We conducted a common garden experiment using isolates of the fungal pathogen Rhynchosporium commune from nine barley populations representing climatically diverse locations. Clonal replicates of 126 genetically distinct isolates were assessed for their growth rate at 12°C, 18°C and 22°C. Populations originating from climates with higher monthly temperature variation...

Data from: Does long distance pollen dispersal preclude inbreeding in tropical trees? Fragmentation genetics of Dysoxylum malabaricum in an agro-forest landscape

Sascha A. Ismail, Jaboury Ghazoul, G. Ravikanth, R. Uma Shaanker, Chris J. Kettle & C. G. Kushalappa
Tropical trees often display long distance pollen dispersal, even in highly fragmented landscapes. Understanding how patterns of spatial isolation influence gene flow and interact with background patterns of fine scale spatial genetic structure are critical for evaluating the genetic consequences of habitat fragmentation. In the endangered tropical timber tree Dysoxylum malabaricum (Meliaceae) we apply eleven microsatellite markers with paternity and parentage analysis to directly estimate contemporary gene flow across a large area (216 km2) in...

Data from: Robustness of the outcome of adult bumblebee infection with a trypanosome parasite after varied parasite exposures during larval development

Gabriel Cisarovsky, Paul Schmid-Hempel & Ben M. Sadd
The outcome of defence by the invertebrate immunity has recently been shown to be more complex than previously thought. In particular, the outcome is affected by biotic and abiotic environmental variation, host genotype, parasite genotype, and their interaction. Knowledge of conditions under which environmental variation affects the outcome of an infection is one important question that relates to this complexity. We here use the model system of the bumblebee, Bombus terrestris infected by the trypanosome,...

Data from: How random is social behaviour? Disentangling social complexity through the study of a wild house mouse population

Nicolas Perony, Claudio J. Tessone, Barbara König & Frank Schweitzer
Out of all the complex phenomena displayed in the behaviour of animal groups, many are thought to be emergent properties of rather simple decisions at the individual level. Some of these phenomena may also be explained by random processes only. Here we investigate to what extent the interaction dynamics of a population of wild house mice (Mus domesticus) in their natural environment can be explained by a simple stochastic model. We first introduce the notion...

Data from: Genetic factors affecting food-plant specialization of an oligophagous seed predator

Liisa Laukkanen, Roosa Leimu, Anne Muola, Marianna Lilley & Pia Mutikainen
Several ecological and genetic factors affect the diet specialization of insect herbivores. The evolution of specialization may be constrained by lack of genetic variation in herbivore performance on different food plant species. By traditional view, trade-offs, i.e., negative genetic correlations between the performance of the herbivores on different food-plant species favour the evolution of specialization. To investigate whether there is genetic variation or trade-offs in herbivore performance between different food plants that may influence specialization...

Data from: Estimating speciation and extinction rates for phylogenies of higher taxa

Tanja Stadler & Folmer Bokma
Speciation and extinction rates can be estimated from molecular phylogenies. Recently, a number of methods have been published showing that these rates can be estimated even if the phylogeny is incomplete, that is, if not all extant species are included. We show that the accuracy of such methods strongly depends on making the correct assumptions about how the sampling process was performed. We focus on phylogenies that are incomplete because some subclades (e.g., genera and...

Data from: Migration patterns and changes in population biology associated with the worldwide spread of the oilseed rape pathogen Leptosphaeria maculans

Azita Dilmaghani, Pierre Gladieux, Lilian Gout, Tatiana Giraud, Patrick C. Brunner, Anna Stachowiak, Marie-Hélène Balesdent & Thierry Rouxel
Pathogen introductions into novel areas can lead to the emergence of new fungal diseases of plants. Understanding the origin, introduction pathways, possible changes in reproductive system and population size of fungal pathogens is essential in devising an integrated strategy for the control of these diseases. We used minisatellite markers to infer the worldwide invasion history of the fungal plant pathogen Leptosphaeria maculans, which causes stem canker (blackleg) of oilseed and vegetable brassicas. Clustering analyses partitioned...

Data from: Phylogenetic and population genetic analyses of Phaeosphaeria nodorum and its close relatives indicate cryptic species and an origin in the Fertile Crescent

Megan C. McDonald, Mohammad Razavi, Timothy L. Friesen, Patrick C. Brunner & Bruce A. McDonald
The origin of the fungal wheat pathogen Phaeosphaeria nodorum remains unclear despite earlier intensive global population genetic and phylogeographical studies. We sequenced 1,683 bp distributed across three loci in 355 globally distributed Phaeosphaeria isolates, including 74 collected in Iran near the center of origin of wheat. We identified nine phylogenetically distinct clades, including two previously unknown species tentatively named P1 and P2 collected in Iran. Coalescent analysis indicates that P1 and P2 are sister species...

Data from: Dynamic transmission, host quality and population structure in a multi-host parasite of bumble bees

Mario Xavier Ruiz-González, John Bryden, Yannick Moret, Christine Reber-Funk, Paul Schmid-Hempel & Mark J. F. Brown
The evolutionary ecology of multi-host parasites is predicted to depend upon patterns of host quality and the dynamics of transmission networks. Depending upon the differences in host quality and transmission asymmetries, as well as the balance between intra- and inter-specific transmission, the evolution of specialist or generalist strategies is predicted. Using a trypanosome parasite of bumble bees we ask how host quality and transmission networks relate to parasite population structure across host species, and thus...

Data from: Forest fragmentation genetics in a formerly widespread island endemic tree: Vateriopsis seychellarum (Dipterocarpaceae)

Aline Finger, Chris J. Kettle, Christopher N. Kaiser-Bunbury, Terence Valentin, James Mougal & Jaboury Ghazoul
Habitat fragmentation and changed land use have seriously reduced population size in many tropical forest tree species. Formerly widespread species with limited gene flow may be particularly vulnerable to the negative genetic effects of forest fragmentation and small population size. Vateriopsis seychellarum (Dipterocarpaceae) is a formerly widespread canopy tree of the Seychelles, but is now reduced to 132 adult individuals distributed in eleven sites. Using ten microsatellite loci, a genetic inventory of all adult trees...

Registration Year

  • 2012
    10

Resource Types

  • Dataset
    10

Affiliations

  • Swiss Federal Institute of Technology in Zurich
    10
  • University of Neuchâtel
    1
  • University of Paris-Sud
    1
  • University of Zurich
    1
  • Ashoka Trust for Research in Ecology and the Environment
    1
  • French National Centre for Scientific Research
    1
  • Trinity College Dublin
    1
  • University of Agricultural Sciences, Bangalore
    1
  • Biologie et Gestion des Risques en Agriculture
    1
  • Royal Holloway University of London
    1