8 Works

Data from: Offspring social network structure predicts fitness in families

Nick J. Royle, Thomas W. Pike, Phillip Heeb, Heinz Richner, Mathias Kölliker & M. Kolliker
Social structures such as families emerge as outcomes of behavioural interactions among individuals, and can evolve over time if families with particular types of social structures tend to leave more individuals in subsequent generations. The social behaviour of interacting individuals is typically analysed as a series of multiple dyadic (pair-wise) interactions, rather than a network of interactions among multiple individuals. However, in species where parents feed dependent young, interactions within families nearly always involve more...

Data from: Brood mixing and reduced polyandry in a maternally mouthbrooding cichlid with elevated among-breeder relatedness

Kristina M. Sefc, Caroline M. Hermann, Barbara Taborsky & Stephan Koblmüller
Uniparental maternal brood care often coincides with multiple paternity and single maternity of broods, possibly reflecting benefits of polyandry and costs of uniparental care. Genetic data from the maternally mouthbrooding cichlid fish Simochromis pleurospilus revealed the opposite pattern – low polyandry and allomaternal care. More than 70% of the investigated females had mated with a single male, and 14% of the females had unrelated fry in their broods. Broods with foreign fry were in the...

Data from: Independent sources of condition dependency and multiple pathways determine a composite trait: lessons from carotenoid-based plumage colouration

Cristina Romero-Díaz, Heinz Richner, Fernando Granado-Lorencio, Barbara Tschirren, Patrick Fitze & C. Romero-Diaz
Many color ornaments are composite traits consisting of at least four components, which themselves may be more complex, determined by independent evolutionary pathways, and potentially being under different environmental control. To date, little evidence exists that several different components of color elaboration are condition-dependent and no direct evidence exists that different ornamental components are affected by different sources of variation. For example, in carotenoid-based plumage coloration, one of the best-known condition-dependent ornaments, color elaboration stems...

Data from: Sexual dimorphism in shells of Cochlostoma septemspirale (Caenogastropoda, Cyclophoroidea, Diplommatinidae, Cochlostomatinae)

Fabian Reichenbach, Hannes Baur & Eike Neubert
Sexual dimorphisms in shell-bearing snails expressed by characteristic traits of their respective shells would offer the possibility for a lot of studies about gender distribution in populations, species, etc. In this study, the seven main shell characters of the snail Cochlostoma septemspirale were measured in both sexes: (1) height and (2) width of the shell, (3) height and (4) width of the aperture, (5) width of the last whorl, (6) rib density on the last...

Data from: Breeding site fidelity and winter admixture in a long-distance migrant, the tufted duck (Aythya fuligula)

Yang Liu, Irene Keller & Gerald Heckel
Long-distance migrants are, by definition, highly mobile but it is poorly understood if this leads to high rates of gene flow and an essentially panmictic global population structure. Genetic divergence in migratory species could be promoted, for example, by fidelity to distinct migratory pathways. In this study, we investigate the population genetic structure of tufted duck (Aythya fuligula), a long-distance migrant with a largely continuous breeding distribution across Eurasia. Distinct, longitudinally oriented flyways have been...

Data from: Deep mitochondrial introgression and hybridization among ecologically divergent vole species

Cristiane Bastos-Silveira, Sara M. Santos, Rita Monarca, Maria Da Luz Mathias & Gerald Heckel
The completion of speciation is typically difficult to ascertain in rapidly diverging taxa but the amount of hybridization and gene flow in sympatry or parapatry contains important information about the level of reproductive isolation achieved. Here we examined the progress in speciation between the Mediterranean (Microtus duodecimcostatus) and the Lusitanian pine vole (M. lusitanicus) which are part of the most rapid radiation of species known in mammals. These two Iberian pine voles are classified as...

Data from: Size-dependent mortality and competition interactively shape community diversity

Barbara Taborsky, Mikko Heino & Ulf Dieckmann
Body size is recognized as a major factor in evolutionary processes mediating sympatric diversification and community structuring. Life-history types with distinct body sizes can result from two fundamental mechanisms, size-dependent competition and size-dependent mortality. While previous theoretical studies investigated these two processes in separation, the model analyzed here allows both selective forces to affect body-size evolution interactively. Here we show for the first time that in the presence of size-dependent competition, size-dependent mortality can give...

Data from: Recent colonization of the Galapagos by the tree Geoffroea spinosa Jacq. (Leguminosae)

Sofia Caetano, Mathias Currat, R. Toby Pennington, Darién Prado, Laurent Excoffier & Yamama Naciri
This study puts together genetic data and an Approximate Bayesian Computation (ABC) approach to infer the time at which the tree Geoffroea spinosa colonized the Galápagos Islands. The genetic diversity and differentiation between Peru and Galápagos population samples, estimated using three chloroplast spacers and six microsatellite loci, reveal significant differences between two mainland regions separated by the Andes mountains (Inter Andean versus Pacific Coast) as well as a significant genetic differentiation of island populations. Microsatellites...

Registration Year

  • 2012
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Resource Types

  • Dataset
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Affiliations

  • University of Bern
    8
  • University of Lisbon
    1
  • Hospital Universitario Puerta de Hierro Majadahonda
    1
  • University of Graz
    1
  • University of Geneva
    1
  • Naturhistorisches Museum
    1
  • University of Zurich
    1
  • University of Basel
    1
  • National University of Rosario
    1
  • Paul Sabatier University
    1