53 Works

Data from: Dressed to impress: breeding plumage as a reliable signal of innate immunity

Sara Pardal, Jose A. Alves, Paulo G. Mota & Jaime A. Ramos
Animal signals involved in sexual selection are often indicators of individual quality. The assumption that sexual characters such as breeding plumage may indicate immune state has rarely been tested in free-living migratory birds, particularly in relation to innate immunity. If sexual characters indeed reflect immune condition, then these could be used to evaluate individual quality. Melanin is a common pigment used in animal communication that mitigates the effects of oxidative stress and has positive effects...

Data from: CSF biomarkers of neuroinflammation and cerebrovascular dysfunction in early Alzheimer's disease

Shorena Janelidze, Niklas Mattsson, Erik Stomrud, Olof Lindberg, Sebastian Palmqvist, Henrik Zetterberg, Kaj Blennow & Oskar Hansson
Objective: To measure cerebrospinal (CSF) levels of biomarkers reflecting microglia and astrocytes activation, neuroinflammation and cerebrovascular changes and study their associations with the core biomarkers of AD pathology (amyloid &[beta] (A&[beta]) and tau), structural imaging correlates and clinical disease progression over time. Methods: The study included cognitively unimpaired elderly (n=508), patients with mild cognitive impairment (MCI, n=256), and AD dementia (n=57) from the longitudinal Swedish BioFINDER cohort. CSF samples were analyzed for YKL-40, IL-6, IL-7,...

Data from: Organic management in apple orchards: higher impacts on biological control than on pollination

Mario Porcel, Georg K.S. Andersson, Joakim Pålsson, Marco Tasin & Georg K. S. Andersson
1. Intensive agricultural management negatively affects both natural enemies of pests and pollinators. Such management also has the potential to adversely affect the ecosystem services that these communities confer. Organic management has been proposed as an alternative method to mitigate such problems by restoring the services provided by arthropod communities. 2. We evaluated the effect of organic management on two ecosystem services provided by arthropods in apple orchards: pollination and biological control. We used relative...

Data from: A mimicked bacterial infection prolongs stopover duration in songbirds – but more pronounced in short- than long-distance migrants

Arne Hegemann, Pablo Alcalde Abril, Sissel Sjöberg, Rachel Muheim, Thomas Alerstam, Jan-Åke Nilsson & Dennis Hasselquist
1) Migration usually consists of intermittent travel and stopovers, the latter being crucially important for individuals to recover and refuel to successfully complete migration. Quantifying how sickness behaviours influence stopovers is crucial for our understanding of migration ecology and how diseases spread. However, little is known about infections in songbirds, which constitute the majority of avian migrants. 2) We experimentally immune-challenged autumn migrating passerines (both short- and long-distance migrating species) with a simulated bacterial infection....

Data from: Dissolved organic carbon in streams within a subarctic catchment analysed using a GIS/remote sensing approach

Pearl Mzobe, Martin Berggren, Petter Pilesjö, Erik Lundin, David Olefeldt, Nigel T. Roulet & Andreas Persson
Climate change projections show that temperature and precipitation increases can alter the exchange of greenhouse gases between the atmosphere and high latitude landscapes, including their freshwaters. Dissolved organic carbon (DOC) plays an important role in greenhouse gas emissions, but the impact of catchment productivity on DOC release to subarctic waters remains poorly known, especially at regional scales. We test the hypothesis that increased terrestrial productivity, as indicated by the normalized difference vegetation index (NDVI), generates...

Data from: Brain myo-inositol as a potential marker of amyloid-related pathology: a longitudinal study.

Olga Voevodskaya, Konstantinos Poulakis, Pia Sundgren, Danielle Van Westen, Sebastian Palmqvist, Lars Olof Wahlund, Erik Stomrud, Oskar Hansson & Eric Westman
Objective: To investigate the association between longitudinal changes in proton magnetic spectroscopy (MRS) metabolites and amyloid pathology in non-demented individuals; to explore the relationship between MRS and cognitive decline. Methods: In this longitudinal multiple time point study (a subset of the Swedish BioFINDER) we included cognitively healthy participants, individuals with subjective cognitive decline and mild cognitive impairment (MCI). MRS was acquired serially in 294 participants (670 individual spectra) from the posterior cingulate/precuneus. Using mixed-effects models,...

Data from: An aposematic colour-polymorphic moth seen through the eyes of conspecifics and predators - sensitivity and colour discrimination in a tiger moth

Miriam J. Henze, Olle Lind, Johanna Mappes, Bibiana Rojas & Almut Kelber
1. Although predation is commonly thought to exert the strongest selective pressure on colouration in aposematic species, sexual selection may also influence colouration. Specifically, polymorphism in aposematic species cannot be explained by natural selection alone. 2. Males of the aposematic wood tiger moth (Arctia plantaginis) are polymorphic for hindwing colouration throughout most of their range. In Scandinavia, they display either white or yellow hindwings. Female hindwing colouration varies continuously from bright orange to red. Redder...

Data from: Early post-embryonic development in Ellipsostrenua (Trilobita, Cambrian, Sweden) and the developmental patterns in Ellipsocephaloidea

Lukáš Laibl, Peter Cederström & Per Ahlberg
This study documents the early post-embryonic developmental stages (protaspides and early meraspides) of the Cambrian trilobite Ellipsostrenua granulosa (Ahlberg, 1984) from the Gärdsjön Formation of Jämtland, Sweden. The early protaspid stage is characterized by a circular outline of the exoskeleton, two pairs of fixigenal spines, a short preglabellar field, a genal swelling, and prominent bacullae. The late protaspid stage differs only in having the trunk portion discernible. Early meraspid cranidia are sub-rectangular with prominent palpebral...

Data from: Assessing reliance on vector navigation in the long-distance oceanic migrations of green sea turtles

Giulia Cerritelli, Giuseppe Bianco, Giacomo Santini, Annette C. Broderick, Brendan J. Godley, Graeme C. Hays, Paolo Luschi & Susanne Åkesson
Vector navigation, i.e. maintaining a constant heading for a given amount of time, is hypothesized to provide a viable basis for the navigational feats of a number of long-distance animal migrants. Since animals following this strategy are subject to drift by wind or by ocean current, performing long migrations relying on vector navigation is particularly challenging. We tested whether vector navigation could be involved in the migrations of green turtles (Chelonia mydas) that migrate between...

Data from: Multiple independent origins of intermediate species between Sorbus aucuparia and S. hybrida (Rosaceae) in the Baltic region

Joel Levin, Michael F. Fay, Jaume Pellicer & Mikael Hedrén
Populations intermediate between the diploid and sexual Sorbus aucuparia and the tetraploid and facultative apomictic Sorbus hybrida are scattered in coastal regions of southern Scandinavia. Our aims were to investigate whether these populations were of local and independent origins, whether they were morphologically and molecularly distinct from each other and whether they could give rise to constant offspring by apomixis. Six intermediate populations from the Baltic Sea basin were studied for variation at nuclear and...

Data from: Age-dependent effects of predation risk on night-time hypothermia in two wintering passerine species

Fredrik Andreasson, Andreas Nord & Jan-Åke Nilsson
Small animals that winter at northern latitudes need to maximize energy intake and minimize energy loss. Many passerine birds use night-time hypothermia to conserve energy. A potential cost of night-time hypothermia with much theoretical (but little empirical) support is increased risk of night-time predation, due to reduced vigilance and lower escape speed in hypothermic birds. This idea has never been tested in the wild. We, therefore, increased perceived predation risk in great tits (Parus major)...

Metadata for a survey investigating motivations for meat-free diets in Sweden

Luisa F. Suárez Rozo & Kimberly Nicholas
The health and environmental impacts of meat-based diets are increasingly recognized as sustainability issues, but the motivations behind behaviour change driving vegetarian diets have generally been studied via a limited set of motivations and are therefore poorly understood. To examine such motivations, we designed a survey measuring 20 different possible motivations, using 77 statements drawn from the existing Food Choice Questionnaire as well as diverse literature on environmental protection, animal welfare, social norms, and pro-environmental...

Data from: Locality or habitat? Exploring predictors of biodiversity in Amazonia

Camila D. Ritter, Alexander Zizka, Christopher Barnes, R. Henrik Nilsson, Fabian Roger & Alexandre Antonelli
Amazonia is an environmentally heterogeneous and biologically megadiverse region, and its biodiversity varies considerably over space. However, existing knowledge on Amazonian biodiversity and its environmental determinants stems almost exclusively from studies of macroscopic above‐ground organisms, notably vertebrates and trees. In contrast, diversity patterns of most other organisms remain elusive, although some of them, for instance microorganisms, constitute the overwhelming majority of taxa in any given location, both in terms of diversity and abundance. Here, we...

Data from: Habitat partitioning during character displacement between the sexes

Stephen P. De Lisle, Samuel Paiva & Locke Rowe
Ecological differences between the sexes are often interpreted as evidence of within-species ecological character displacement (ECD), a hypothesis with almost no direct tests. Here we experimentally-test two predictions, that are direct corollaries of ECD between the sexes, in a salamander. First, we find support for the prediction that each sex has a growth rate advantage in the aquatic microhabitat where it is most commonly found. Second, we test the prediction that selection for ECD in...

Data from: Rates and predictors of attrition among children on antiretroviral therapy in Ethiopia: a prospective cohort study

Mulatu Biru, Inger Hallström, Pia Lundqvist & Degu Jerene
Introduction: Attrition from antiretroviral therapy (ART) programmes is a critical challenge among children receiving care in resource-limited settings. Our objective was to determine the rates and predictors of attrition among children on ART in Ethiopia. Methods: Between December 2014 and September 2016, we conducted a prospective cohort study in eight health facilities in Ethiopia. Eligibility criteria included age 3 months-14 years; being on ART for not more than a month. Outcome was attrition due to...

Data from: Blood parasites shape extreme major histocompatibility complex diversity in a migratory passerine

Aleksandra Biedrzycka, Wojciech Bielański, Adam Ćmiel, Wojciech Solarz, Tadeusz Zając, Magdalena Migalska, Alvaro Sebastian, Helena Westerdahl & Jacek Radwan
Pathogens are one of the main forces driving the evolution and maintenance of the highly polymorphic genes of the vertebrate major histocompatibility complex (MHC). Although MHC proteins are crucial in pathogen recognition, it is still poorly understood how pathogen-mediated selection promotes and maintains MHC diversity, and especially so in host species with highly duplicated MHC genes. Sedge warblers (Acrocephalus schoenobaenus) have highly duplicated MHC genes and using data from high-throughput MHC genotyping we were able...

Data from: Maize-dominated landscapes reduce bumble bee colony growth through pollen diversity loss

Annika Louise Hass, Lara Brachmann, Péter Batáry, Yann Clough, Hermann Behling & Teja Tscharntke
1. Bumble bees are important pollinators for a wide range of crops and wild plants. Performance of their colonies depends on pollen and nectar as food resources, but flowering plants are scarce in modern agricultural landscapes. It is well-known that semi-natural habitats can enhance floral resources and bumble bee abundance, but the impact of different crop types and their heterogeneity at the landscape scale remains unclear. 2. We tested the effect of two different crop...

Data from: Aerodynamics of manoeuvring flight in brown long-eared bats (Plecotus auritus)

Per Henningsson, Lasse Jakobsen & Anders Hedenström
In this study, we explicitly examine the aerodynamics of manoeuvring flight in animals. We studied brown long-eared bats flying in a wind tunnel while performing basic sideways manoeuvres. We used particle image velocimetry in combination with high-speed filming to link aerodynamics and kinematics to understand the mechanistic basis of manoeuvres. We predicted that the bats would primarily use the downstroke to generate the asymmetries for the manoeuvre since it has been shown previously that the...

Data from: Genomic sequence capture of haemosporidian parasites: methods and prospects for enhanced study of host-parasite evolution

Lisa N. Barrow, Julie M. Allen, Xi Huang, Staffan Bensch & Christopher C. Witt
Avian malaria and related haemosporidians (Plasmodium, [Para]Haemoproteus, and Leucocytoozoon) represent an exciting multi-host, multi-parasite system in ecology and evolution. Global research in this field accelerated after 1) the publication in 2000 of PCR protocols to sequence a haemosporidian mitochondrial (mtDNA) barcode, and 2) the development in 2009 of an open-access database to document the geographic and host ranges of parasite mtDNA haplotypes. Isolating haemosporidian nuclear DNA from bird hosts, however, has been technically challenging, slowing...

Data from: Interspecific transfer of parasites following a range-shift in Ficedula flycatchers

William Jones, Katarzyna Kulma, Staffan Bensch, Mariusz Cichoń, Anvar Kerimov, Miloš Krist, Toni Laaksonen, Juan Moreno, Pavel Munclinger, Fred Slater, Eszter Szöllősi, Marcel E. Visser, Anna Qvarnström & Fred M. Slater
Human-induced climate change is expected to cause major biotic changes in species distributions and thereby including escalation of novel host-parasite associations. Closely related host species that come into secondary contact are especially likely to exchange parasites and pathogens. Two competing theories, the Enemy Release Hypothesis, where invading hosts escape their original parasites; and the Novel Weapon Hypothesis, where invading hosts bring new parasites that have detrimental effects on native hosts, have been described to predict...

Data from: Associations between tau, Aβ, and cortical thickness with cognition in Alzheimer disease

Rik Ossenkoppele, Ruben Smith, Tomas Ohlsson, Olof Strandberg, Niklas Mattsson, Philip S. Insel, Sebastian Palmqvist & Oskar Hansson
Objective To examine the cross-sectional associations between regional tau, β-amyloid (Aβ), and cortical thickness and neuropsychological function across the preclinical and clinical spectrum of Alzheimer disease (AD). Methods We included 106 participants from the Swedish Biomarkers for Identifying Neurodegenerative Disorders Early and Reliably (BioFINDER) study, of whom 33 had preclinical AD (Aβ-positive cognitively normal individuals), 25 had prodromal AD (Aβ-positive mild cognitive impairment), and 48 had probable AD dementia. All underwent [18F]flortaucipir (tau) and structural...

Data from: Genetic structure in parasitic Rhinanthus angustifolius is determined by geographical distance rather than habitat – implications for taxonomy and conservation

Anneli Jonstrup, Stefan Andersson & Mikael Hedrén
Analyses of intraspecific genetic structure can promote the conservation of genetic diversity of rare or declining plant species by enabling identification of proper management units. Here we investigate the genetic structure of the annual hemiparasitic herb Rhinanthus angustifolius to evaluate the genetic distinctness of two currently described subspecies and three habitat-related groups of populations inferred from recent common-garden data. Data from 11 nuclear microsatellite loci, obtained from 17 southern Swedish populations of R. angustifolius, were...

Data from: Linking life-history theory and metabolic theory explains the offspring size-temperature relationship

Amanda K. Pettersen, Craig R. White, Robert J. Bryson-Richardson & Dustin J. Marshall
Temperature often affects maternal investment in offspring. Across and within species, mothers in colder environments generally produce larger offspring than mothers in warmer environments, but the underlying drivers of this relationship remain unresolved. We formally evaluated the ubiquity of the temperature-offspring size relationship and found strong support for a negative relationship across a wide variety of ectotherms. We then tested an explanation for this relationship that formally links life-history and metabolic theories. We estimated the...

Data from: Effects of interspecific coexistence on laying date and clutch size in two closely related species of hole‐nesting birds

Anders Pape Møller, Javier Balbontin, André A. Dhondt, Vladimir Remeš, Frank Adriaensen, Clotilde Biard, Jordi Camprodon, Mariusz Cichoń, Blandine Doligez, Anna Dubiec, Marcel Eens, Tapio Eeva, Anne E. Goodenough, Andrew G. Gosler, Lars Gustafsson, Philipp Heeb, Shelley A. Hinsley, Staffan Jacob, Rimvydas Juškaitis, Toni Laaksonen, Bernard Leclercq, Bruno Massa, Tomasz D. Mazgajski, Rudi G. Nager, Jan-Åke Nilsson … & Ruedi G. Nager
Coexistence between great tits Parus major and blue tits Cyanistes caeruleus, but also other hole‐nesting taxa, constitutes a classic example of species co‐occurrence resulting in potential interference and exploitation competition for food and for breeding and roosting sites. However, the spatial and temporal variations in coexistence and its consequences for competition remain poorly understood. We used an extensive database on reproduction in nest boxes by great and blue tits based on 87 study plots across...

Data from: Signatures of local adaptation along environmental gradients in a range-expanding damselfly (Ischnura elegans)

Rachael Y. Dudaniec, Chuan Ji Yong, Lesley T. Lancaster, Erik I. Svensson & Bengt Hansson
Insect distributions are shifting rapidly in response to climate change and are undergoing rapid evolutionary change. We investigate the molecular signatures underlying local adaptation in the range-expanding damselfly, Ischnura elegans. Using a landscape genomic approach combined with generalized dissimilarity modelling (GDM), we detect selection signatures on loci via allelic frequency change along environmental gradients. We analyse 13,612 Single Nucleotide Polymorphisms (SNPs), derived from Restriction site-Associated DNA sequencing (RADseq), in 426 individuals from 25 sites spanning...

Registration Year

  • 2018

Resource Types

  • Dataset


  • Lund University
  • Swedish University of Agricultural Sciences
  • University of Exeter
  • Nederlands Instituut voor Ecologie
  • University of Gothenburg
  • French National Centre for Scientific Research
  • Skåne University Hospital
  • University of Copenhagen
  • Swiss Ornithological Institute
  • University of Oxford