20 Works

Data from: Cyclic bouts of extreme bradycardia counteract the highmetabolism of frugivorous bats

M. Teague O'Mara, Martin Wikelski, Christian C. Voigt, Andries Ter Maat, Henry S. Pollock, Gary Burness, Lanna M. Desantis, Dina K. N. Dechmann & Dina KN Dechmann
Active flight requires the ability to efficiently fuel bursts of costly locomotion while maximizing energy conservation during non-flying times. We took a multi-faceted approach to estimate how fruit-eating bats (Uroderma bilobatum) manage a high-energy lifestyle fueled primarily by fig juice. Miniaturized heart rate telemetry shows that they use a novel, cyclic, bradycardic state that reduces daily energetic expenditure by 10% and counteracts heart rates as high as 900 bpm during flight. Uroderma bilobatum support flight...

Data from: Admixture increases performance of an invasive plant beyond first generation heterosis

Yan Li, Marc Stift & Mark Van Kleunen
1. Through its potential to enhance progeny performance, admixture (between-population crossing) may promote invasiveness of alien plants. The few studies that tested this idea found evidence for heterosis (positive effects of admixture) in the first generation (F1), but have not considered further generations. In this paper, we test whether admixture-benefits can be maintained in subsequent generations of an invasive plant. 2. We follow up on a previous study, in which we made crosses between plants...

Data from: Male but not female zebra finches with high plasma corticosterone have lower survival

Blanca Jimeno, Michael Briga, Michaela Hau & Simon Verhulst
(1) The glucocorticoid axis is essential for coping with predictable and unpredictable environmental variation. Despite this vital function, attempts to link individual variation in the glucocorticoid axis to survival have yielded mixed results, which may be due to endocrine variation caused by uncontrolled variation in environment and life history traits such as reproductive effort. We therefore studied the link between the glucocorticoid axis and long-term survival using captive non-breeding zebra finches. (2) We quantified the...

Data from: In the presence of specialist root and shoot herbivory, invasive-range Brassica nigra populations have stronger competitive effects than native-range populations

Ayub M. O. Oduor, Mark Van Kleunen & Marc Stift
1. The evolution of increased competitive ability (EICA) hypothesis predicts that release from specialist herbivores enables invasive plants to evolve increased growth. The most powerful tests of EICA hypothesis are provided by approaches that simultaneously assess the effects of specialist herbivory and competitive interactions. However, such approaches are extremely rare, and hence how simultaneous release from root and shoot herbivory influence competitive ability of invasive plants remains little understood. 2. Here, we tested whether invasive-range...

Data from: The effects of climate warming and disturbance on the colonization potential of ornamental alien plant species

Emily Haeuser, Wayne Dawson & Mark Van Kleunen
1. A large number of alien plant species have been introduced as ornamental garden plants to Europe, but relatively few have become invasive. Low climatic suitability may be limiting the current invasion potential of many alien ornamental species. However, with ongoing disturbance and climate change, this barrier may be reduced for some species. 2. Here we tested how colonization ability (a prerequisite for invasion) of frequently planted alien ornamentals depends on disturbance and heating, and...

Data from: Invasive alien plants benefit more from clonal integration in heterogeneous environments than natives

Yong-Jian Wang, Heinz Müller-Schärer, Mark Van Kleunen, Ai-Ming Cai, Ping Zhang, Rong Yan, Bi-Cheng Dong & Fei-Hai Yu
What confers invasive alien plants a competitive advantage over native plants remains open to debate. Many of the world's worst invasive alien plants are clonal and able to share resources within clones (clonal integration), particularly in heterogeneous environments. Here, we tested the hypothesis that clonal integration benefits invasive clonal plants more than natives and thus confers invasives a competitive advantage. We selected five congeneric and naturally co-occurring pairs of invasive alien and native clonal plants...

Data from: Animal tracking meets migration genomics: transcriptomic analysis of a partially migratory bird species

Paolo Franchini, Iker Irisarri, Adam Fudickar, Andreas Schmidt, Axel Meyer, Martin Wikelski & Jesko Partecke
Seasonal migration is a widespread phenomenon, which is found in many different lineages of animals. This spectacular behaviour allows animals to avoid seasonally adverse environmental conditions to exploit more favourable habitats. Migration has been intensively studied in birds, which display astonishing variation in migration strategies, thus providing a powerful system for studying the ecological and evolutionary processes that shape migratory behaviour. Despite intensive research, the genetic basis of migration remains largely unknown. Here we used...

Data from: Relatively weak inbreeding depression in selfing but also in outcrossing populations of North American Arabidopsis lyrata

Samuel Carleial, Mark Van Kleunen & Marc Stift
Hermaphroditic plants can potentially self-fertilise, but most possess adaptations that promote outcrossing. However, evolutionary transitions to higher selfing rates are frequent. Selfing comes with a transmission advantage over outcrossing, but self-progeny may suffer from inbreeding depression, which forms the main barrier to the evolution of higher selfing rates. Here, we assessed inbreeding depression in the North American herb Arabidopsis lyrata, which is normally self-incompatible, with a low frequency of self-compatible plants. However, a few populations...

Data from: The role of rare morph advantage and conspicuousness in the stable gold-dark colour polymorphism of a crater lake Midas cichlid fish

Julián Torres-Dowdall, Jimena Golcher-Benavides, Gonzalo Machado-Schiaffino & Axel Meyer
1. Genetically based stable colour polymorphisms provide a unique opportunity to study the evolutionary processes that preserve genetic variability in the wild. Different mechanisms are proposed to promote the stability of polymorphisms, but only few empirical examples have been documented, resulting in an incomplete understanding of these mechanisms. 2. A remarkable genetically-determined stable colour polymorphism is found in the Nicaraguan Midas cichlid species complex (Amphilophus cf. citrinellus). All Midas cichlids start their life with a...

Data from: Functional trait differences and trait plasticity mediate biotic resistance to potential plant invaders

Luisa Conti, Svenja Block, Madalin Parepa, Tamara Münkemüller, Wilfried Thuiller, Alicia T.R. Acosta, Mark Van Kleunen, Stefan Dullinger, Franz Essl, Iwona Dullinger, Dietmar Moser, Günther Klonner, Oliver Bossdorf, Marta Carboni & Alicia T. R. Acosta
1. Biotic resistance represents an important natural barrier to potential invaders throughout the world, yet the underlying mechanisms that drive such resistance are still debated. In theory, native communities should repel both functionally similar invaders which compete for the same resources, and invaders which possess less competitive traits. However, environmental stress, trade-offs across vital rates and competition-induced plastic trait shifts may modify expected competitive outcomes, thereby influencing invasion dynamics. 2. In order to test these...

Data from: Detecting hybridization by likelihood calculation of gene tree extra lineages given explicit models

Melisa Olave, Luciano J. Avila, , Mariana Morando & Jack W. Sites
Explanations for gene tree discordance with respect to a species tree are commonly attributed to deep coalescence (also known as incomplete lineage sorting [ILS]), as well as different evolutionary processes such as hybridization, horizontal gene transfer and gene duplication. Among these, deep coalescence is usually quantified as the number of extra lineages and has been studied as the principal source of discordance among gene trees, while the other processes that could contribute to gene tree...

Data from: Profound reversible seasonal changes of individual skull size in a mammal

Javier Lázaro, Dina K. N. Dechmann, Scott LaPoint, Martin Wikelski, Moritz Hertel & Dina K.N. Dechmann
Postnatal size changes in most vertebrates are unidirectional and finite once the individual reaches full size. In rare cases, changes of body length may occur in response to harsh environmental conditions. Such reactionary changes are distinct from seasonal, often anticipatory morphological changes, such as the reversible size change of some adult bird brains. A unique pattern of profound anatomical change known as Dehnel’s phenomenon has been described for the body, skull and brain size of...

Data from: Genetic dissection of adaptive form and function in rapidly-speciating cichlid fishes

Frederico Henning, Gonzalo Machado-Schiaffino, Lukas Baumgarten & Axel Meyer
Genes of major phenotypic effects and strong genetic correlations can facilitate adaptation, direct selective responses and potentially lead to phenotypic convergence. However, the preponderance of this type of genetic architecture in repeatedly-evolved adaptations remains unknown. Using hybrids between Haplochromis chilotes (thick-lipped) and H. nyererei (thin-lipped) we investigated the genetics underlying hypertrophied lips and elongated heads, traits that evolved repeatedly in cichlids. At least 25 loci of small-to-moderate and mainly additive effects were detected. Phenotypic variation...

Data from: Incipient speciation driven by hypertrophied lips in Midas cichlids fish?

Gonzalo Machado-Schiaffino, Andreas F. Kautt, Julian Torres-Dowdall, Lukas Baumgarten, Frederico Henning & Axel Meyer
Sympatric speciation has been debated in evolutionary biology for decades. Although it has gained in acceptance recently, still only a handful of empirical examples are seen as valid (e.g. crater lake cichlids). In this study, we disentangle the role of hypertrophied lips in the repeated adaptive radiations of Nicaraguan crater lake cichlid fish. We assessed the role of disruptive selection and assortative mating during the early stages of divergence and found a functional trade-off in...

Data from: Lateralized feeding behavior is associated with asymmetrical neuroanatomy and lateralized gene expressions in the brain in scale-eating cichlid fish

Hyuk Je Lee, Ralf F. Schneider, Tereza Manousaki, Ji Hyoun Kang, Etienne Lein, Paolo Franchini & Axel Meyer
Lateralized behavior (‘handedness’) is unusual, but consistently found across diverse animal lineages, including humans. It is thought to reflect brain anatomical and/or functional asymmetries, but its neuro-molecular mechanisms remain largely unknown. Lake Tanganyika scale-eating cichlid fish, Perissodus microlepis show pronounced asymmetry in their jaw morphology as well as handedness in feeding behavior – feeding scales preferentially only from one or the other side of their victims. This makes them an ideal model in which to...

Data from: Admixture between released and wild game birds: a changing genetic landscape in European mallards (Anas platyrhynchos)

Pär Söderquist, Johan Elmberg, Gunnar Gunnarsson, Carl-Gustaf Thulin, Jocelyn Champagnon, Matthieu Guillemain, Jakub Kreisinger, Herbert H. T. Prins, Richard P. M. A. Crooijmans & Robert H. S. Kraus
Disruption of naturally evolved spatial patterns of genetic variation and local adaptations is a growing concern in wildlife management and conservation. During the last decade, releases of native taxa with potentially non-native genotypes have received increased attention. This has mostly concerned conservation programs, but releases are also widely carried out to boost harvest opportunities. The mallard, Anas platyrhynchos, is one of few terrestrial migratory vertebrates subjected to large-scale releases for hunting purposes. It is the...

Data from: Phylotranscriptomic consolidation of the jawed vertebrate timetree

Iker Irisarri, Denis Baurain, Henner Brinkmann, Frédéric Delsuc, Jean-Yves Sire, Alexander Kupfer, Jörn Petersen, Michael Jarek, Axel Meyer, Miguel Vences & Hervé Philippe
Phylogenomics is extremely powerful but introduces new challenges as no agreement exists on “standards” for data selection, curation and tree inference. We use jawed vertebrates (Gnathostomata) as model to address these issues. Despite considerable efforts in resolving their evolutionary history and macroevolution, few studies have included a full phylogenetic diversity of gnathostomes and some relationships remain controversial. We tested a novel bioinformatic pipeline to assemble large and accurate phylogenomic datasets from RNA sequencing and find...

Data from: Molecular investigation of genetic assimilation during the rapid adaptive radiations of East African cichlid fishes

Helen M. Gunter, Ralf F. Schneider, Immanuel Karner, Christian Sturmbauer & Axel Meyer
Adaptive radiations are characterized by adaptive diversification intertwined with rapid speciation within a lineage resulting in many ecologically specialized, phenotypically diverse species. It has been proposed that adaptive radiations can originate from ancestral lineages with pronounced phenotypic plasticity in adaptive traits, facilitating ecologically-driven phenotypic diversification that is ultimately fixed through genetic assimilation of gene regulatory regions. This study aimed to investigate how phenotypic plasticity is reflected in gene expression patterns in the trophic apparatus of...

Data from: Men’s preferences for women’s body odours are not associated with HLA

Fabian Probst, Urs Fischbacher, Janek S. Lobmaier, Urs Wirthmüller & Daria Knoch
Body odours reportedly portray information about an individual's genotype at the major histocompatibility complex (MHC, called human leucocyte antigen, HLA, in humans). While there is strong experimental support for MHC-associated mating behaviour in animals, the situation in humans is more complex. A lot of effort has been spent on testing HLA-associated odour preferences of women. To date, only very few studies have looked at HLA-linked olfactory preferences in men and these studies have revealed inconsistent...

Data from: Social and spatial effects on genetic variation between foraging flocks in a wild bird population

Reinder Radersma, Colin J. Garroway, Anna W. Santure, Isabelle De Cauwer, Damien R. Farine, Jon Slate & Ben C. Sheldon
Social interactions are rarely random. In some instances animals exhibit homophily or heterophily, the tendency to interact with similar or dissimilar conspecifics respectively. Genetic homophily and heterophily influence the evolutionary dynamics of populations, because they potentially affect sexual and social selection. Here we investigate the link between social interactions and allele frequencies in foraging flocks of great tits (Parus major) over three consecutive years. We constructed co-occurrence networks which explicitly described the splitting and merging...

Registration Year

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Affiliations

  • University of Konstanz
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  • Max Planck Institute for Ornithology
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  • Taizhou University
    3
  • University of Liège
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  • Columbia University
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  • Kristianstad University
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  • Technische Universität Braunschweig
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  • Lund University
    1
  • University of Groningen
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  • University of Graz
    1