11 Works

Data from: Foraging mode of spiders affects risk of predation by birds

Bengt Gunnarsson & Kerstin Wiklander
Avian insectivores are top predators of arboreal arthropods in different forest ecosystems. The selective effects of bird predation in relation to foraging behaviour in canopy-living spiders were studied in a 2-year field experiment using exclosures in a spruce forest in southern Sweden. Three different hunting strategies – free-hunting, two-dimensional web, three-dimensional web – were included in the analysis. Comparisons of bird predation rate (ratio ln (abundance net-enclosed branch/abundance control)) showed considerable variation between spider groups....

Data from: Discovery of a relict lineage and monotypic family of passerine birds

Per Alström, Daniel M. Hooper, Yang Liu, Urban Olsson, Dhananjai Mohan, Magnus Gelang, Hung Le Manh, Jian Zhao, Fumin Lei, Trevor D. Price & P. Alstrom
Analysis of one of the most comprehensive datasets to date of the largest passerine bird clade, Passerida, identified 10 primary well-supported lineages corresponding to Sylvioidea, Muscicapoidea, Certhioidea, Passeroidea, the ‘bombycillids’ (here proposed to be recognized as Bombycilloidea), Paridae/Remizidae (proposed to be recognized as Paroidea), Stenostiridae, Hyliotidae, Regulidae (proposed to be recognized as Reguloidea) and spotted wren-babbler Spelaeornis formosus. The latter was found on a single branch in a strongly supported clade with Muscicapoidea, Certhioidea and...

Data from: Elevated carbon dioxide alters the plasma composition and behaviour of a shark

Leon Green & Fredrik Jutfelt
Increased carbon emissions from fossil fuels are increasing the pCO2 of the ocean surface waters in a process called ocean acidification. Elevated water pCO2 can induce physiological and behavioural effects in teleost fishes, although there appear to be large differences in sensitivity between species. There is currently no information available on the possible responses to future ocean acidification in elasmobranch fishes. We exposed small-spotted catsharks (Scyliorhinus canicula) to either control conditions or a year 2100...

Data from: ITS1: a DNA barcode better than ITS2 in eukaryotes?

Xin-Cun Wang, Chang Liu, Liang Huang, Haimei Chen, Jian-Hui Zhang, Dayong Cai, Jian-Qin Li & Johan Bengtsson-Palme
A DNA barcode is a short piece of DNA sequence used for species determination and discovery. The internal transcribed spacer (ITS/ITS2) region has been proposed as the standard DNA barcode for fungi and seed plants, and has been widely used in DNA barcoding analyses for other biological groups, e.g. algae, protists, and animals. The ITS region consists of both ITS1 and ITS2 regions. Here, a large scale meta-analysis was carried out to compare ITS1 and...

Data from: High opsin diversity in a non-visual infaunal brittlestar

Jérôme Delroisse, Esther Ullrich-Lüter, Olga Ortega-Martinez, Sam Dupont, Maria-Ina Arnone, Jérôme Mallefet & Patrick Flammang
Background: In metazoans, opsins are photosensitive proteins involved in both vision and non-visual photoreception. Echinoderms have no well-defined eyes but several opsin genes were found in the purple sea urchin (Strongylocentrotus purpuratus) genome. Molecular data are lacking for other echinoderm classes although many species are known to be light sensitive.Results: In this study focused on the European brittle star Amphiura filiformis, we first highlighted a blue-green light sensitivity using a behavioural approach. We then identified...

Data from: Outbreeding effects in an inbreeding insect, Cimex lectularius

Toby Fountain, Roger K. Butlin, Klaus Reinhardt & Oliver Otti
In some species, populations with few founding individuals can be resilient to extreme inbreeding. Inbreeding seems to be the norm in the common bed bug, Cimex lectularius, a flightless insect that, nevertheless, can reach large deme sizes and persist successfully. However, bed bugs can also be dispersed passively by humans, exposing inbred populations to gene flow from genetically distant populations. The introduction of genetic variation through this outbreeding could lead to increased fitness (heterosis) or...

Data from: From gene trees to a dated allopolyploid network: insights from the angiosperm genus Viola (Violaceae)

Thomas Marcussen, Lise Heier, Anne K. Brysting, Bengt Oxelman & Kjetill S. Jakobsen
Allopolyploidisation acounts for a significant fraction of speciation events in many eukaryotic lineages. However, existing phylogenetic and dating methods require tree-like topologies and are unable to handle the network-like phylogenetic relationships of lineages containing allopolyploids. No explicit framework has so far been established for evaluating competing network topologies, and few attempts have been made to date phylogenetic networks. We used a four-step approach to generate a dated polyploid species network for the cosmopolitan angiosperm genus...

Data from: Male receiver bias for red agonistic signaling in a yellow-signaling widowbird: a field experiment

Calum E. Ninnes & Staffan Andersson
Receiver bias models of signal evolution are typically regarded as alternatives or complements to ornament evolution due to coevolving mate choice, whereas sexually or socially selected agonistic signals are rarely studied with respect to receiver psychology. Against the background of convergent evolution of red agonistic signals from yellow ancestors in the genus Euplectes (widowbirds and bishops), we experimentally test the function of a yellow signal in the montane marsh widowbird (E. psammocromius), as well as...

Data from: Marginal likelihood estimate comparisons to obtain optimal species delimitations in Silene sect. Cryptoneurae (Caryophyllaceae)

Zeynep Aydin, Thomas Marcussen, Alaattin Selcuk Ertekin & Bengt Oxelman
Coalescent-based inference of phylogenetic relationships among species takes into account gene tree incongruence due to incomplete lineage sorting, but for such methods to make sense species have to be correctly delimited. Because alternative assignments of individuals to species result in different parametric models, model selection methods can be applied to optimise model of species classification. In a Bayesian framework, Bayes factors (BF), based on marginal likelihood estimates, can be used to test a range of...

Data from: Do the same genes underlie parallel phenotypic divergence in different Littorina saxatilis populations?

Anja M. Westram, Juan Galindo, Magnus Alm Rosenblad, John W. Grahame, Marina Panova & Roger K. Butlin
Parallel patterns of adaptive divergence and speciation are cited as powerful evidence for the role of selection driving these processes. However, it is often not clear whether parallel phenotypic divergence is underlain by parallel genetic changes. Here, we asked about the genetic basis of parallel divergence in the marine snail Littorina saxatilis, which has repeatedly evolved coexisting ecotypes adapted to either crab predation or wave action. We sequenced the transcriptome of snails of both ecotypes...

Data from: Bayesian estimation of speciation and extinction from incomplete fossil occurrence data

Daniele Silvestro, Jan Schnitzler, Lee Hsiang Liow, Alexandre Antonelli & Nicolas Salamin
The temporal dynamics of species diversity are shaped by variations in the rates of speciation and extinction, and there is a long history of inferring these rates using first and last appearances of taxa in the fossil record. Understanding diversity dynamics critically depends on unbiased estimates of the unobserved times of speciation and extinction for all lineages, but the inference of these parameters is challenging due to the complex nature of the available data. Here,...

Registration Year

  • 2014

Resource Types

  • Dataset


  • University of Gothenburg
  • University of Oslo
  • University of Sheffield
  • Sun Yat-sen University
  • University of Lausanne
  • University of Bayreuth
  • Université Catholique de Louvain
  • University of Leeds
  • University of Chicago
  • University of Mons