42 Works

Data from: Sperm variation within a single ejaculate affects offspring development in Atlantic salmon

Simone Immler, Cosima Hotzy, Ghazal Alavioon, Erik Petersson & Göran Arnqvist
It is generally believed that variation in sperm phenotype within a single ejaculate has no consequences for offspring performance, because sperm phenotypes are thought not to reflect sperm genotypes. We show that variation in individual sperm function within an ejaculate affects the performance of the resulting offspring in the Atlantic salmon Salmo salar. We experimentally manipulated the time between sperm activation and fertilization in order to select for sperm cohorts differing in longevity within single...

Data from: A recently transferred cluster of bacterial genes in Trichomonas vaginalis –lateral gene transfer and the fate of acquired genes.

Åke Strese, Anders Backlund & Cecilia Alsmark
Background: Lateral Gene Transfer (LGT) has recently gained recognition as an important contributor to some eukaryote proteomes, but the mechanisms of acquisition and fixation in eukaryotic genomes are still uncertain. A previously defined norm for LGTs in microbial eukaryotes states that the majority are genes involved in metabolism, the LGTs are typically localized one by one, surrounded by vertically inherited genes on the chromosome, and phylogenetics shows that a broad collection of bacterial lineages have...

Data from: Coarse dark patterning functionally constrains adaptive shifts from aposematism to crypsis in strawberry poison frogs

Anna Qvarnström, Andreas Rudh, Torkel Edström, Anders Ödeen, Hanne Løvlie, Birgitta Tullberg & Birgitta S. Tullberg
Ecological specialization often requires tight co-evolution of several traits, which may constrain future evolutionary pathways and make species more prone to extinction. Aposematism and crypsis represent two specialized adaptations to avoid predation. We tested whether the combined effects of color and pattern on prey conspicuousness functionally constrain or facilitate shifts between these two adaptations. We combined data from 17 natural populations of Strawberry poison frogs, Oophaga pumilio with an experimental approach using digitalized images of...

Data from: Multivariate intralocus sexual conflict in seed beetles

David Berger, Elena C. Berg, William Anders Widegren, Göran Arnqvist, Alexei A. Maklakov & William Widegren
Intralocus sexual conflict (IaSC) is pervasive because males and females experience differences in selection but share much of the same genome. Traits with integrated genetic architecture should be reservoirs of sexually antagonistic genetic variation for fitness but explorations of multivariate IaSC are scarce. Previously, we showed that upward artificial selection on male lifespan decreased male fitness but increased female fitness compared with downward selection in the seed beetle Callosobruchus maculatus. Here, we use these selection...

Data from: Sperm competition generates evolution of increased paternal investment in a sex role-reversed seed beetle

Isobel Booksmythe, Karoline Fritzsche & Göran Arnqvist
When males provide females with resources at mating they can become the limiting sex in reproduction, in extreme cases leading to the reversal of typical courtship roles. The evolution of male provisioning is thought to be driven by male reproductive competition and selection for female fecundity enhancement. We used experimental evolution under male- or female-biased sex ratios and limited or unlimited food regimes to investigate the relative roles of these routes to male provisioning in...

Data from: ‘True’ null allele detection in microsatellite loci: a comparison of methods, assessment of difficulties, and survey of possible improvements

Michał J. Dąbrowski, Susanne Bornelöv, Marcin Kruczyk, Nicholas Baltzer & Jan Komorowski
Null alleles are alleles that for various reasons fail to amplify in a PCR assay. The presence of null alleles in microsatellite data is known to bias the genetic parameter estimates. Thus, efficient detection of null alleles is crucial, but the methods available for indirect null allele detection return inconsistent results. Here, our aim was to compare different methods for null allele detection, to explain their respective performance and to provide improvements. We applied several...

Data from: Small-scale patterns in snowmelt timing affect gene flow and the distribution of genetic diversity in the alpine dwarf shrub Salix herbacea

Andrés J. Cortés, Stephan Waeber, Christian Lexer, Janosch Sedlacek, Julia A. Wheeler, Mark Van Kleunen, Oliver Bossdorf, Günter Hoch, Christian Rixen, Sonja Wipf & Sophie Karrenberg
Current threats to biodiversity, such as climate change, are thought to alter the within-species genetic diversity among microhabitats in highly heterogeneous alpine environments. Assessing the spatial organization and dynamics of genetic diversity within species can help to predict the responses of organisms to environmental change. In this study, we evaluated whether small-scale heterogeneity in snowmelt timing restricts gene flow between microhabitats in the common long-lived dwarf shrub Salix herbacea L. We surveyed 273 genets across...

Data from: Basal dinosauriform and theropod dinosaurs from the middle-late Norian (Late Triassic) of Poland: implications for Triassic dinosaur evolution and distribution

Grzegorz Niedźwiedzki, Stephen L. Brusatte, Tomasz Sulej & Richard J. Butler
The rise of dinosaurs during the Triassic is a widely studied evolutionary radiation, but there are still many unanswered questions about early dinosaur evolution and biogeography that are hampered by an unevenly sampled Late Triassic fossil record. Although very common in western North America and parts of South America, dinosaur (and more basal dinosauriform) remains are relatively rare in the Upper Triassic deposits of Europe, making any new discoveries critically important. One of the most...

Data from: Colour in a new light: a spectral perspective on the quantitative genetics of carotenoid coloration

Simon R. Evans & Ben C. Sheldon
1. Carotenoid-based colours are model traits for research on animal signalling and sexual selection but, whereas the consequences of variable expression have been extensively studied, its causes are rarely quantified. This issue is complicated by the composite nature of carotenoid-based colour patches, which combine pigments and a reflective background. Ultimately, the evolution of such colours will be determined by the processes that govern variable expression of these mechanisms. 2. We present a novel approach to...

Data from: A high-density linkage map enables a second-generation collared flycatcher genome assembly and reveals the patterns of avian recombination rate variation and chromosomal evolution

Takeshi Kawakami, Linnéa Smeds, Niclas Backström, Arild Husby, Anna Qvarnström, Carina F. Mugal, Pall Olason & Hans Ellegren
Detailed linkage and recombination rate maps are necessary to use the full potential of genome sequencing and population genomic analyses. We used a custom collared flycatcher 50 K SNP array to develop a high-density linkage map with 37 262 markers assigned to 34 linkage groups in 33 autosomes and the Z chromosome. The best-order map contained 4215 markers, with a total distance of 3132 cM and a mean genetic distance between markers of 0.12 cM....

Data from: Evolution of niche preference in Sphagnum peat mosses

Matthew G. Johnson, Gustaf Granath, Teemu Tahvanainen, Remy Pouliot, Hans K. Stenøien, Line Rochefort, Håkan Rydin & A. Jonathan Shaw
Peat mosses (Sphagnum) are ecosystem engineers— species in boreal peatlands simultaneously create and inhabit narrow habitat preferences along two microhabitat gradients: an ionic gradient and a hydrological hummock-hollow gradient. In this paper we demonstrate the connections between microhabitat preference and phylogeny in Sphagnum. Using a dataset of 39 species of Sphagnum, with an 18-locus DNA alignment and an ecological dataset encompassing three large published studies, we tested for phylogenetic signal and within-genus changes in evolutionary...

Data from: Limited indirect fitness benefits of male group membership in a lekking species

Christophe Lebigre, Rauno V. Alatalo, Carl D. Soulsbury, Jacob Höglund & Heli Siitari
In group living species, individuals may gain the indirect fitness benefits characterising kin selection when groups contain close relatives. However, tests of kin selection have primarily focused on cooperatively breeding and eusocial species, whereas its importance in other forms of group living remains to be fully understood. Lekking is a form of grouping where males display on small aggregated territories, which females then visit to mate. As females prefer larger aggregations, territorial males might gain...

Data from: Experimentally increased reproductive effort alters telomere length in the blue tit (Cyanistes caeruleus)

Joanna Sudyka, Aneta Arct, Szymon Drobniak, Anna Dubiec, Lars Gustafsson & Mariusz Cichoń
Telomeres have recently been suggested to play important role in ageing and are considered to be a reliable ageing biomarkers. The life history theory predicts that costs of reproduction should be expressed in terms of accelerated senescence, and some empirical studies do confirm such presumption. Thus, a link between reproductive effort and telomere dynamics should be anticipated. Recent studies have indeed demonstrated that reproduction may trigger telomere loss, but actual impact of reproductive effort has...

Data from: Multifarious selection through environmental change: acidity and predator-mediated adaptive divergence in the moor frog (Rana arvalis)

Andrés Egea-Serrano, Sandra Hangartner, Anssi Laurila & Katja Räsänen
Environmental change can simultaneously cause abiotic stress and alter biological communities, yet adaptation of natural populations to co-changing environmental factors is poorly understood. We studied adaptation to acid and predator stress in six moor frog (Rana arvalis) populations along an acidification gradient, where abundance of invertebrate predators increases with increasing acidity of R. arvalis breeding ponds. First, we quantified divergence among the populations in anti-predator traits (behaviour and morphology) at different rearing conditions in the...

Data from: Identifying the African wintering grounds of hybrid flycatchers using a multi–isotope (δ2H, δ13C, δ15N) assignment approach

Thor Veen, Mårten B. Hjernquist, Steven L. Van Wilgenburg, Keith A. Hobson, Eelke Folmer, Laura Font & Marcel Klaassen
Migratory routes and wintering grounds can have important fitness consequences, which can lead to divergent selection on populations or taxa differing in their migratory itinerary. Collared (Ficedula albicollis) and pied (F. hypoleuca) flycatchers breeding in Europe and wintering in different sub-Saharan regions have distinct migratory routes on the eastern and western sides of the Sahara desert, respectively. In an earlier paper, we showed that hybrids of the two species did not incur reduced winter survival,...

Data from: The GPCR repertoire in the demosponge Amphimedon queenslandica: insights into the GPCR system at the early divergence of animals

Arunkumar Krishnan, Rohit Dnyansagar, Markus Sällman Almén, Michael J. Williams, Robert Fredriksson, Manoj Narayanan & Helgi B. Schiöth
Background: G protein-coupled receptors (GPCRs) play a central role in eukaryotic signal transduction. However, the GPCR component of this signalling system, at the early origins of metazoans is not fully understood. Here we aim to identify and classify GPCRs in Amphimedon queenslandica (sponge), a member of the Porifera (one of the earliest diverging metazoan lineages). Furthermore, phylogenetic comparisons of sponge GPCRs with eumetazoan and bilaterian GPCRs will be essential to our understanding of the GPCR...

Data from: Intralocus sexual conflict and environmental stress

David Berger, Karl Grieshop, Martin I. Lind, Julieta Goenaga, Alexei A. Maklakov & Göran Arnqvist
Intralocus sexual conflict (ISC) occurs when selection at a given locus favors different alleles in males and females, placing a fundamental constraint on adaptation. However, the relative impact of ISC on adaptation may become reduced in stressful environments that expose conditionally deleterious mutations to selection. The genetic correlation for fitness between males and females (rMF) provides a quantification of ISC across the genome. We compared ISC at a benign (29˚C) and a stressful (36˚C) temperature...

Registration Year

  • 2014
    42

Resource Types

  • Dataset
    42

Affiliations

  • Uppsala University
    42
  • Linköping University
    4
  • University of Sussex
    2
  • Museum and Institute of Zoology
    2
  • University of Lausanne
    2
  • University College London
    2
  • Swedish University of Agricultural Sciences
    2
  • University of Toronto
    2
  • University of Helsinki
    2
  • Stockholm University
    2