7 Works

Stable species boundaries despite ten million years of hybridization in tropical eels

Julia Barth, Chrysoula Gubili, Michael Matschiner, Ole Tørresen, Shun Watanabe, Bernd Egger, Yu-San Han, Eric Feunteun, Ruben Sommaruga, Robert Jehle & Robert Schabetsberger
Genomic evidence is increasingly underpinning that hybridization between taxa is commonplace, challenging our views on the mechanisms that maintain their boundaries. Here, we focus on seven catadromous eel species (genus Anguilla), and use genome-wide sequence data from more than 450 individuals sampled across the tropical Indo-Pacific, morphological information, and three newly assembled draft genomes to compare contemporary patterns of hybridization with signatures of past gene flow across a time-calibrated phylogeny. We show that the seven...

Data from: Towards a standardized quantitative and qualitative insect monitoring scheme

Jerome Moriniere, Axel Hausmann, Andreas Segerer, Greifenstein Thomas, Johannes Knubben, Vedran Bozicevic, Dieter Doczkal, Armin Günter, Werner Ulrich & Jan Christian Habel
The number of insect species and insect abundances decreased severely during the past decades over major parts of Central Europe. Previous studies documented declines of species richness, abundances, shifts in species composition, and decreasing biomass of flying insects. In this study we present a standardized approach to quantitatively and qualitatively assess insect diversity, biomass and the abundance of taxa, in parallel. We applied two methods: Malaise traps, and automated and active light trapping. Sampling was...

A reply to the critical evaluation of the Oscillayers methods and dataset

Alexander Gamisch
The authors offered a critical evaluation of theory and methods of the Oscillayers approach and attempted to test its utility by reproducing global circulation model (GCM-)based palaeo-climatic reconstructions of two variables (Bio1 and Bio12) for four different time points (130kyr, 787kyr, 3.2Myr, 3.3Myr). They concluded that Oscillayers show poor agreement with independent GCMs and thus do not provide a robust approximation of palaeoclimate throughout the Plio-Pleistocene. Here, I demonstrate that the authors underestimated the ability...

Data from: Slow oscillation-spindle coupling predicts enhanced memory formation from childhood to adolescence

Michael A. Hahn, Dominik P.J. Heib, Manuel Schabus, Kerstin Hoedlmoser & Randolph F. Helfrich
Precise temporal coordination of slow oscillations (SO) and sleep spindles is a fundamental mechanism of sleep-dependent memory consolidation. SO and spindle morphology changes considerably throughout development. Critically, it remains unknown how the precise temporal coordination of these two sleep oscillations develops during brain maturation and whether their synchronization indexes the development of memory networks. Here, we use a longitudinal study design spanning from childhood to adolescence, where participants underwent polysomnography and performed a declarative word-pair...

Habitat fragmentation shapes natal dispersal and sociality in an Afrotropical cooperative breeder

Laurence Cousseau, Martijn Hammers, Dries Van De Loock, Beate Apfelbeck, Mwangi Githiru, Erik Matthysen & Luc Lens
It remains poorly understood how effects of anthropogenic activity, such as large-scale habitat fragmentation, impact sociality in animals. In cooperatively breeding species, groups are mostly formed through delayed offspring dispersal, and habitat fragmentation can affect this process in two opposite directions. Increased habitat isolation may increase dispersal costs, promoting delayed dispersal. Alternatively, reduced patch size and quality may decrease benefits of philopatry, promoting dispersal. Here, we test both predictions in a cooperatively breeding bird (placid...

Determinate growth is predominant and likely ancestral in squamate reptiles

Petra Frýdlová, Jana Mrzílková, Martin Šeremeta, Jan Křemen, Jan Dudák, Jan Žemlička, Bernd Minnich, Kristina Kverková, Pavel Němec, Petr Zach & Daniel Frynta
Body growth is typically thought to be indeterminate in ectothermic vertebrates. Indeed, until recently, this growth pattern was considered to be ubiquitous in ectotherms. Our recent observations of a complete growth plate cartilage (GPC) resorption, a reliable indicator of arrested skeletal growth, in many species of lizards clearly reject the ubiquity of indeterminate growth in reptiles and raise the question about the ancestral state of the growth pattern. Using X-ray micro-computed tomography (µCT), here we...

Global gradients in intraspecific variation in vegetative and floral traits are partially associated with climate and species richness

Jonas Kuppler, Cécile H. Albert, Gregory M. Ames, W. Scott Armbruster, Gerhard Boenisch, Florian C. Boucher, Diane R. Campbell, Liedson T. Carneiro, Eduardo Chacón-Madrigal, Brian J. Enquist, Carlos R. Fonseca, José M. Gómez, Antoine Guisan, Pedro Higuchi, Dirk N. Karger, Jens Kattge, Michael Kleyer, Nathan J. B. Kraft, Anne-Amélie C. Larue-Kontić, Amparo Lázaro, Martin Lechleitner, Deirdre Loughnan, Vanessa Minden, Ülo Niinemets, Gerhard E. Overbeck … & Robert R. Junker
Aim Intraspecific trait variation (ITV) within natural plant communities can be large, influencing local ecological processes and dynamics. Here, we shed light on how ITV in vegetative and floral traits responds to large-scale abiotic and biotic gradients (i.e. climate and species richness). Specifically, we tested if associations of ITV with temperature, precipitation and species richness were consistent with any of from four hypotheses relating to stress-tolerance and competition. Furthermore, we estimated the degree of correlation...

Registration Year

  • 2020
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Affiliations

  • University of Salzburg
    6
  • University of Antwerp
    1
  • Ghent University
    1
  • University of Avignon
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  • Duke University
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  • Estonian University of Life Sciences
    1
  • University of Groningen
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  • University of Lausanne
    1
  • University of California, Berkeley
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  • Estacion Experimental de Zonas Aridas
    1