13 Works

New opabiniid diversifies the weirdest wonders of the euarthropod stem group

Joanna Wolfe, Stephen Pates, Rudy Lerosey-Aubril, Allison C. Daley & Javier Ortega-Hernández
Once considered ‘weird wonders’ of the Cambrian, the emblematic Burgess Shale animals Anomalocaris and Opabinia are now recognized as lower stem group euarthropods and have provided crucial data for constraining the polarity of key morphological characters in the group. Anomalocaris and its relatives (radiodonts) had a worldwide distribution and survived until at least the Devonian. However, despite intense study, Opabinia remains the only formally described opabiniid to date. Here we reinterpret a fossil from the...

Data on range-wide breeding habitat use of the critically endangered Yellow-breasted Bunting Emberiza aureola after population collapse

Wieland Heim, Ilka Beermann, Alexander Thomas, Marc Bastardot, Nyambayar Batbayar, Batmunkh Davaasuren, Yury Gerasimov, Makoto Hasebe, Gleb Nakul, Jugdernamjil Nergui, Pavel Ktitorov & Olga Kulikova
The population of the Yellow-breasted Bunting Emberiza aureola, a formerly widely distributed and abundant songbird of northern Eurasia, suffered a catastrophic decline and a strong range contraction between 1980 and 2013. There is evidence that the decline was driven by illegal trapping during migration, but potential contributions of other factors to the decline, such as land-use change, have not yet been evaluated. Before effects of land-use change can be evaluated, a basic understanding of the...

Environmental variation in sex ratios and sexual dimorphism in three wind-pollinated dioecious plant species

Sarah Bürli, John R. Pannell & Jeanne Tonnabel
Variation in plant sex ratios is often attributable to sex-specific mortality in heterogeneous environments that differentially limit male and female plant reproduction. Yet sexual dimorphism and plastic responses to environmental heterogeneity are common and may co-vary with variation in sex ratios. Here, we show that the sex ratio and the degree of sexual dimorphism for a number of plant traits varied along climatic and elevation gradients in three wind-pollinated dioecious species, Rumex lunaria, Urtica dioica...

Density-dependent selection and the maintenance of colour polymorphism in barn owls

Thomas Kvalnes, Bernt-Erik Sæther, Steinar Engen & Alexandre Roulin
The capacity of natural selection to generate adaptive changes is according to the Fundamental Theorem of Natural Selection proportional to the additive genetic variance in fitness. In spite of its importance for development of new adaptations to a changing environment, processes affecting the magnitude of the genetic variance in fitness-related traits are poorly understood. Here we show that the red-white colour polymorphism in female barn owls is subject to density-dependent selection at the phenotypic and...

Viral RefSeq databases for Centrifuge, Kraken2 and DIAMOND

Anna-Sapfo Malaspinas, Samuel Neuenschwander & Yami Arizmendi Cárdenas
Owing to technological advances in ancient DNA, it is now possible to sequence viruses from the past to track down their origin and evolution. However, ancient DNA data is considerably more degraded and contaminated than modern data making the identification of ancient viral genomes particularly challenging. Several methods to characterise the modern microbiome (and, within this, the virome) have been developed; in particular, tools that assign sequenced reads to specific taxa in order to characterise...

Whole-genome analysis of multiple wood ant population pairs supports similar speciation histories, but different degrees of gene flow, across their European ranges

Beatriz Portinha, Amaury Avril, Christian Bernasconi, Heikki Heläntera, Josie Monaghan, Bernhard Seifert, Vítor C. Sousa, Jonna Kulmuni & Pierre Nouhaud
The application of demographic history modelling and inference to the study of divergence between species has become a cornerstone of speciation genomics. Speciation histories are usually reconstructed by analysing single populations from each species, assuming that the inferred population history represents the actual speciation history. However, this assumption may not be met when species diverge with gene flow, e.g., when secondary contact may be confined to specific geographic regions. Here, we tested whether divergence histories...

Pivotal role of O-antigenic polysaccharide display in the sensitivity against phage tail-like particles in environmental Pseudomonas kin competition

Clara Heiman, Monika Maurhofer, Sandra Calderon, Mélanie Dupasquier, Julien Marquis, Christoph Keel & Jordan Vacheron
Environmental pseudomonads colonize various niches including insect and plant environments. When invading these environments, bacteria are confronted with the resident microbiota. To cope with closely related strains they deploy narrow-spectrum weaponry such as tailocins, i.e phage tail-like particles. Little is known about the receptors for these tailocins especially among phylogenetically closely related species. Here, we studied the interaction between an R-tailocin from Pseudomonas protegens CHA0 and a targeted kin, Pseudomonas protegens Pf-5. Using genome-wide transposon...

A tradeoff between robustness to environmental fluctuations and speed of evolution

Max Schmid, Maria Paniw, Maarten Postuma, Arpat Ozgul & Frédéric Guillaume
The ability of a species to cope with both long-term and short-term environmental fluctuations might vary with the species' life history. While some life-history characteristics promote large and stable population sizes despite interannual environmental fluctuations, other life-history strategies might allow to evolve quickly in response to long-term gradual changes. In a theoretical study, we show that there is a tradeoff between both properties. Life-history characteristics that promote fast rates of evolution come at the expense...

Phenotypes and genotypes of brown trout used for breeding experiments in 2014

Claus Wedekind, Jonas Bylemans & Lucas Marques Da Cunha
Adult brown trout were caught via electrofishing around the beginning of the spawning season from the River Aare and its tributaries Gürbe, Worble, Giesse, Kiese, and Rotache (Bern canton, Switzerland). They were kept in the Fischereistützpunkt Reutigen until eggs could be stripped from females. Adults were narcoticised when ready to spawn and gametes were stripped for block-wise full-factorial in vitro fertilisations (e.g. Marques da Cunha et al. 2019). Photographs were taken from all fish, standard...

Flows of invasive ants worldwide to the United States

Cleo Bertelsmeier
International trade and human movements have accidentally transported thousands of species worldwide at an unprecedented scale. The resulting biological invasions are among the greatest drivers of species extinctions and can cause enormous economic losses. Understanding how globalization affects the accidental transport of species is urgent to prevent new invasions. However, global trade networks have had mixed success so far in explaining intercontinental species movements. Here, we show that commonly used proxies of global trade flows...

Adaptation to a bacterial pathogen in Drosophila melanogaster is not aided by sexual selection

Sakshi Sharda, Tadeusz Kawecki & Brian Hollis
Theory predicts that sexual selection should aid adaptation to novel environments, but empirical support for this idea is limited. Pathogens are a major driver of host evolution and, unlike abiotic selection pressures, undergo epidemiological and co-evolutionary cycles with the host involving adaptation and counteradaptation. Because of this, populations harbor ample genetic variation underlying immunity and the opportunity for sexual selection based on condition-dependent “good genes” is expected to be large. In this study, we evolved...

Inbreeding and kinship coefficients of parents of sperm competition experiment with lake char (Lake Geneva 2017/18)

Christian De Guttry, David Nusbaumer, Laura Garaud, Laurie Ançay & Claus Wedekind
A total of 14 lake char (Salvelinus umbla) were genotyped in the same library using ddRADsequencing. The data includes 14 gzipped .fastq files generated using 2 lanes of sequencing on an Illumina HIseq 2500 and the final dataset with the final estimates of kinship and inbreeding. For each individual, the fastq files of the 2 sequencings lanes were merged after demultiplexing using process_radtags (Stacks 1.48). We provide the bash and R scripts that we used....

Moths and butterflies on alien shores – global biogeography of non-native Lepidoptera

Richard Mally, Rebecca M. Turner, Rachael E. Blake, Gyda Fenn-Moltu, Cleo Bertelsmeier, Eckehard G. Brockerhoff, Robert J. B. Hoare, Helen F. Nahrung, Alain Roques, Deepa S. Pureswaran, Takehiko Yamanaka & Andrew M. Liebhold
Lepidoptera is a highly diverse, predominantly herbivorous insect order, with species transported to outside their native range largely facilitated by the global trade of plants and plant-based goods. Analogous to island disharmony, we examine invasion disharmony, where species filtering during invasions increases systematic compositional differences between native and non-native species assemblages, and test whether some families are more successful at establishing in non-native regions than others. We compared numbers of non-native, unintentionally introduced Lepidoptera species...

Registration Year

  • 2022
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  • Dataset
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Affiliations

  • University of Lausanne
    13
  • University of Helsinki
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  • National Research Institute for Agriculture, Food and Environment
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  • Estación Biológica de Doñana
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  • University of Münster
    1
  • University of Cambridge
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  • University of the Sunshine Coast
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  • University of Lisbon
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  • National Agriculture and Food Research Organization
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  • University of South Carolina
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