19 Works

Data from: A comparative study of egg recognition signature mixtures in Formica ants

Heikki Helanterä & Patrizia D'Ettorre
Processing of information from the environment, such as assessing group membership in social contexts, is a major determinant of inclusive fitness. For social insects, recognizing brood origin is crucial for inclusive fitness in many contexts, such as social parasitism and kin conflicts within colonies. Whether or not a recognition signature is informative in kin conflicts, depends on the extent of a genetic contribution into the cues. We investigated colony and matriline specific variation in egg...

Data from: Global distribution of Chelonid fibropapilloma-associated herpesvirus among clinically healthy sea turtles

Alonzo Alfaro-Núñez, Mads Frost Bertelsen, Anders Miki Bojesen, Isabel Rasmussen, Lisandra Zepeda-Mendoza, Morten Tange Olsen & Marcus Thomas Pius Gilbert
Background: Fibropapillomatosis (FP) is a neoplastic disease characterized by cutaneous tumours that has been documented to infect all sea turtle species. Chelonid fibropapilloma-associated herpesvirus (CFPHV) is believed to be the aetiological agent of FP, based principally on consistent PCR-based detection of herpesvirus DNA sequences from FP tumours. We used a recently described PCR-based assay that targets 3 conserved CFPHV genes, to survey 208 green turtles (Chelonia mydas). This included both FP tumour exhibiting, and clinically...

Data from: Global population structure and demographic history of the grey seal

Anastasia Klimova, Caleb D. Phillips, Katharina Fietz, Morten T. Olsen, John Harwood, William Amos & Joseph I. Hoffman
Although the grey seal Halichoerus grypus is one of the most familiar and intensively studied of all pinniped species, its global population structure remains to be elucidated. Little is also known about how the species as a whole may have historically responded to climate-driven changes in habitat availability and anthropogenic exploitation. We therefore analysed samples from over 1500 individuals collected from 22 colonies spanning the Western and Eastern Atlantic and the Baltic Sea regions, represented...

Data from: Anthropogenic hybridization between endangered migratory and commercially harvested stationary whitefish taxa (Coregonus spp.)

Jan Dierking, Luke Phelps, Kim Præbel, Gesine Ramm, Enno Prigge, Jost Borcherding, Matthias Brunke & Christophe Eizaguirre
Natural hybridization plays a key role in the process of speciation. However, anthropogenic (human induced) hybridization of historically isolated taxa raises conservation issues. Due to weak barriers to gene flow and the presence of endangered taxa, the whitefish species complex is an excellent study system to investigate the consequences of hybridization in conservation. We focused on three naturally reproductively isolated whitefish taxa in Germany: the endangered, anadromous North Sea houting (NSH) and Baltic houting (BH),...

Data from: Third wave cognitive therapy versus mentalization-based treatment for major depressive disorder: a randomised clinical trial

Janus Christian Jakobsen, Christian Gluud, Mickey Kongerslev, Kirsten Aaskov Larsen, Per Sørensen, Per Winkel, Theis Lange, Ulf Søgaard & Erik Simonsen
Objective: To compare the benefits and harms of third-wave cognitive therapy versus mentalisation-based therapy in a small sample of depressed participants. Setting: The trial was conducted at an outpatient psychiatric clinic for non-psychotic patients in Roskilde, Denmark. Participants: 44 consecutive adult participants diagnosed with major depressive disorder. Interventions: 18 weeks of third-wave cognitive therapy (n=22) versus 18 weeks of mentalisation-based treatment (n=22). Outcomes: The primary outcome was the Hamilton Rating Scale for Depression (HDRS) at...

Data from: Is there a causal link between knee loading and knee osteoarthritis progression? A systematic review and meta-analysis of cohort studies and randomised trials

Marius Henriksen, Mark W. Creaby, Hans Lund, Carsten Juhl & Robin Christensen
Objective: We performed a systematic review, meta-analysis and assessed the evidence supporting a causal link between knee joint loading during walking and structural knee osteoarthritis (OA) progression. Design: Systematic review, meta-analysis and application of Bradford Hill's considerations on causation. Data sources: We searched MEDLINE, Scopus, AMED, CINAHL and SportsDiscus for prospective cohort studies and randomised controlled trials (RCTs) from 1950 through October 2013. Study eligibility criteria: We selected cohort studies and RCTs in which estimates...

Data from: Hyper-Theory-of-Mind in children with psychotic experiences

Lars Clemmensen, Jim Van Os, Anne Mette Skovgaard, Mette Væver, Els M. A. Blijd-Hoogewys, Agna A. Bartels-Velthuis & Pia Jeppesen
Background: Alterations in Theory-of-Mind (ToM) are associated with psychotic disorder. In addition, studies in children have documented that alterations in ToM are associated with Psychotic Experiences (PE). Our aim was to examine associations between an exaggerated type of ToM (HyperToM) and PE in children. Children with this type of alteration in ToM infer mental states when none are obviously suggested, and predict behaviour on the basis of these erroneous beliefs. Individuals with HyperToM do not...

Data from: Shotgun microbial profiling of fossil remains

Clio Der Sarkissian, Luca Ermini, Hákon Jónsson, Anatoly N. Alekseev, Éric Crubézy, Beth Shapiro & Ludovic Orlando
Millions to billions of DNA sequences can now be generated from ancient skeletal remains thanks to the massive throughput of next-generation sequencing platforms. Except in cases of exceptional endogenous DNA preservation, most of the sequences isolated from fossil material do not originate from the specimen of interest, but instead reflect environmental organisms that colonized the specimen after death. Here, we characterize the microbial diversity recovered from seven ca. 200-13,000 year old horse bones collected from...

Data from: Herbarium specimens reveal a historical shift in phylogeographic structure of common ragweed during native range disturbance

Michael D. Martin, Elizabeth A. Zimmer, Morten T. Olsen, Andrew D. Foote, M. Thomas P. Gilbert & Grace S. Brush
Invasive plants provide ample opportunity to study evolutionary shifts that occur after introduction to novel environments. However, although genetic characters pre-dating introduction can be important determinants of later success, large-scale investigations of historical genetic structure have not been feasible. Common ragweed (Ambrosia artemisiifolia L.) is an invasive weed native to North America that is known for its allergenic pollen. Palynological records from sediment cores indicate that this species was uncommon before European colonization of North...

Data from: Scaling of phloem structure and optimality of photoassimilate transport in conifer needles

Henrik Ronellenfitsch, Johannes Liesche, Kaare H. Jensen, Noel Michele Holbrook, Alexander Schulz & Eleni Katifori
The phloem vascular system facilitates transport of energy-rich sugar and signalling molecules in plants, thus permitting long-range communication within the organism and growth of non-photosynthesizing organs such as roots and fruits. The flow is driven by osmotic pressure, generated by differences in sugar concentration between distal parts of the plant. The phloem is an intricate distribution system, and many questions about its regulation and structural diversity remain unanswered. Here, we investigate the phloem structure in...

Data from: Is diagnosability an indicator of speciation? Response to ‘Why one century of phenetics is enough’

Rasmus Heller, Peter Frandsen, Eline Dierdre Lorenzen, Hans R. Siegismund & Eline Deirdre Lorenzen
Recently (Heller et al. 2013; H&A), we commented on a revision of the bovid taxonomy, which proposes a doubling in the number of recognized species (Groves and Grubb 2011; G&G). The subsequent response by Cotterill et al. (2014; C&A) contains a number of misunderstandings and leaves much of the critique voiced in our paper unanswered, focusing instead on species ontologies and taxonomic history. C&A argue strongly against phenetics, morphospecies and taxonomic conservatism, ascribing us views...

Data from: Influence of hepatitis C virus and IL28B genotypes on liver stiffness

Lene Fogt Lundbo, Louise Nygaard Clausen, Nina Weis, Kristian Schønning, Lene Rosenørn, Thomas Benfield & Peer Brehm Christensen
Objective: Liver fibrosis has been associated with hepatitis C virus (HCV) genotype and genetic variation near the interleukin 28B (IL28B) gene, but the relative contribution is unknown. We aimed to investigate the relation between HCV genotypes, IL28B and development of liver stiffness. Patients and Methods: This cross-sectional study consists of 369 patients with chronic hepatitis C (CHC). Liver stiffness was evaluated using transient elastograhy (TE). Factors associated with development of liver fibrosis were identified by...

Data from: Genetic resources of teak (Tectona grandis Linn. f.) – strong genetic structure among natural populations

Ole K. Hansen, Suchitra Changtragoon, Bundit Ponoy, Erik D. Kjær, Yazar Minn, Reiner Finkeldey, Knud B. Nielsen & Lars Graudal
Twenty-nine provenances of teak (Tectona grandis Linn. f.) representing the full natural distribution range of the species were genotyped with microsatellite DNA markers to analyse genetic diversity and population genetic structure. Provenances originating from the semi-moist east coast of India had the highest genetic diversity while provenances from Laos showed the lowest. In the eastern part of the natural distribution area, comprising Myanmar, Thailand and Laos, there was a strong clinal decrease in genetic diversity...

Data from: Evidence for varying social strategies across the day in chacma baboons

Claudia Sick, Alecia J. Carter, Harry H. Marshall, Leslie A. Knapp, Torben Dabelsteen & Guy Cowlishaw
Strong social bonds can make an important contribution to individual fitness, but we still have only a limited understanding of the temporal period relevant to the adjustment of social relationships. While there is growing recognition of the importance of strong bonds that persist for years, social relationships can also vary over weeks and months, suggesting that social strategies may be optimized over shorter timescales. Using biological market theory as a framework, we explore whether temporal...

Data from: Landscape genomics and a common garden trial reveal adaptive differentiation to temperature across Europe in the tree species Alnus glutinosa

Hanne De Kort, Katrien Vandepitte, Hans Henrik Bruun, Déborah Closset-Kopp, Olivier Honnay & Joachim Mergeay
The adaptive potential of tree species to cope with climate change has important ecological and economic implications. Many temperate tree species experience a wide range of environmental conditions, suggesting high adaptability to new environmental conditions. We investigated adaptation to regional climate in the drought-sensitive tree species Alnus glutinosa (Black alder), using a complementary approach that integrates genomic, phenotypic and landscape data. A total of 24 European populations were studied in a common garden and through...

Data from: Nitrogen saturation in humid tropical forests after 6 years of nitrogen and phosphorus addition: hypothesis testing

Hao Chen, Geshere A. Gurmesa, Wei Zhang, Xiaomin Zhu, Mianhai Zheng, Qinggong Mao, Tao Zhang & Jiangming Mo
Nitrogen (N) saturation hypothesis suggests that when an ecosystem reaches N-saturation, continued N input will cause increased N leaching, nitrous oxide (N2O) emission, and N mineralization and nitrification rates. It also suggests that a different element will become the main limiting factor when N saturation has been reached. Although this hypothesis has been tested in temperate forests, whether they can be directly applied to N-saturated tropical forests remain poorly addressed. To test this hypothesis, soil...

Data from: Evidence that microgynes of Myrmica rubra ants are social parasites that attack old host colonies

Sämi Schär & David R. Nash
Ant microgynes are miniaturized queen forms found together with normal queens (macrogynes) in species occurring across the ant phylogeny. Their role is not yet fully understood: in some cases, they seem to be nonparasitic alternative reproductive morphs, in others incipient social parasites, and thus potential models for studying the evolution of social parasitism. Whether they are regarded as parasitic or not has traditionally been based on genetic differentiation from syntopic macrogynes and/or the queen/worker ratio...

Data from: The genome of the clonal raider ant Cerapachys biroi

Peter R. Oxley, Lu Ji, Ingrid Fetter-Pruneda, Sean K. McKenzie, Cai Li, Haofu Hu, Guojie Zhang & Daniel J. C. Kronauer
Social insects are important models for social evolution and behavior. However, in many species, experimental control over important factors that regulate division of labor, such as genotype and age, is limited. Furthermore, most species have fixed queen and worker castes, making it difficult to establish causality between the molecular mechanisms that underlie reproductive division of labor, the hallmark of insect societies. Here we present the genome of the queenless clonal raider ant Cerapachys biroi, a...

Data from: Diet specialization in an extreme omnivore: nutritional regulation in glucose-averse German cockroaches

Jonathan Z. Shik, Coby Schal & Jules Silverman
Organisms have diverse adaptations for balancing dietary nutrients, but often face trade-offs between ingesting nutrients and toxins in food. While extremely omnivorous cockroaches would seem excluded from such dietary trade-offs, German cockroaches (Blattella germanica) in multiple populations have rapidly evolved a unique dietary specialization – an aversion to glucose, the phagostimulant in toxic baits used for pest control. We used factorial feeding experiments within the geometric framework to test whether glucose-averse (GA) cockroaches with limited...

Registration Year

  • 2014

Resource Types

  • Dataset


  • University of Copenhagen
  • Natural History Museum
  • Max Planck Institute for Dynamics and Self Organization
  • Odense University Hospital
  • Research Institute for Nature and Forest
  • University of Cologne
  • Johns Hopkins University
  • Royal Forest Department
  • University of Groningen
  • University of Cambridge