10 Works

Data from: Picky hitch-hikers: vector choice leads to directed dispersal and fat-tailed kernels in a passively dispersing mite

Emanuel A. Fronhofer, Ellen B. Sperr, Anna Kreis, Manfred Ayasse, Hans Joachim Poethke & Marco Tschapka
Dispersal is a central life-history trait for most animals and plants: it allows to colonize new habitats, escape from competition or avoid inbreeding. Yet, not all species are mobile enough to perform sufficient dispersal. Such passive dispersers may use more mobile animals as dispersal vectors. If multiple potential vectors are available, an active choice can allow to optimize the dispersal process and to determine the distribution of dispersal distances, i.e. an optimal dispersal kernel. We...

Data from: High cover of hedgerows in the landscape supports multiple ecosystem services in Mediterranean cereal fields

Matteo Dainese, Silvia Montecchiari, Tommaso Sitzia, Maurizia Sigura & Lorenzo Marini
Field-margin diversification through conservation and restoration of hedgerows is becoming a prominent intervention for promoting biodiversity and associated ecosystem services in intensive agricultural landscapes. However, how increasing cover of hedgerows in the landscape can affect ecosystem services has rarely been considered. Here, we assessed the effect of increased field-margin complexity at the local scale and increasing cover of hedgerows in the landscape on the provision of pest control, weed control and potential pollination. Locally, three...

Data from: Epithelial magnesium transport by TRPM6 is essential for prenatal development and adult survival

Vladimir Chubanov, Thomas Gudermann, Wenke Jonas, Annette Schürmann, Önder A Yildirim, Yuriy Shymkiv, Alexey G Ryazanov, Christian Weber, Emiel PC Van Der Vorst, Harald Bartsch, Karl Sotlar, Attila Braun, David G Simmons, Silvia Ferioli, Annika Wisnowsky, Banu Akdogan, Lorenz Mittermeier, Ludmila Sytik, Susanna Zierler & Vindi Jurinovic
Mg2+ regulates many physiological processes and signalling pathways. However, little is known about the mechanisms underlying the organismal balance of Mg2+. Capitalizing on a set of newly generated mouse models, we provide an integrated mechanistic model of the regulation of organismal Mg2+ balance during prenatal development and in adult mice by the ion channel TRPM6. We show that TRPM6 activity in the placenta and yolk sac is essential for embryonic development. In adult mice, TRPM6...

Data from: Heterogeneous patterns of abundance of epigeic arthropod taxa along a major elevation gradient

Juliane Röder, Florian Detsch, Insa Otte, Tim Appelhans, Thomas Nauss, Marcell K. Peters & Roland Brandl
Species diversity is the variable most commonly studied in recent ecological research. Ecological processes, however, are driven by individuals and affected by their abundances. Understanding the variation in animal abundances along climatic gradients is important for predicting changes in ecosystem processes under global warming. High abundances make arthropods, despite their small body sizes, important actors in food webs, yet abundance distributions of major arthropod taxa along climatic gradients remain poorly documented. We sampled arthropod assemblages...

Data from: Mass-flowering crops dilute pollinator abundance in agricultural landscapes across Europe

Andrea Holzschuh, Matteo Dainese, Juan P. González-Varo, Sonja Mudri-Stojnić, Verena Riedinger, , Jeroen Scheper, Jennifer B. Wickens, Victoria J. Wickens, Riccardo Bommarco, David Kleijn, Simon G. Potts, Stuart P.M. Roberts, Henrik G. Smith, Montserrat Vilà, Ante Vujić, Ingolf Steffan-Dewenter & Stuart P. M. Roberts
Mass-flowering crops (MFCs) are increasingly cultivated and might influence pollinator communities in MFC fields and nearby semi-natural habitats (SNHs). Across six European regions and 2 years, we assessed how landscape-scale cover of MFCs affected pollinator densities in 408 MFC fields and adjacent SNHs. In MFC fields, densities of bumblebees, solitary bees, managed honeybees and hoverflies were negatively related to the cover of MFCs in the landscape. In SNHs, densities of bumblebees declined with increasing cover...

Data from: The evolution of optimal emergence times: bet hedging and the quest for an ideal free temporal distribution of individuals

Hans Joachim Poethke, Thomas Hovestadt & Oliver Mitesser
Proper timing of activities is one of the principal challenges faced by most organisms. Organisms need to account for various aspects in decision making like avoiding inordinate risks, synchronizing with resource availability, or finding mates. We provide analytical and simulation models to investigate the influence of life expectancy, resource competition and unpredictable environmental conditions (environmental uncertainty) on the evolutionarily stable distribution of emergence times in organisms depending on seasonally available resources. We focus on the...

Data from: Enhanced aphid abundance in spring desynchronizes predator–prey and plant–microorganism interactions

Benjamin Fuchs, Tatjana Breuer, Simone Findling, Markus Krischke, Martin J. Müller, Andrea Holzschuh, Jochen Krauss & Martin J. Mueller
Climate change leads to phenology shifts of many species. However, not all species shift in parallel, which can desynchronize interspecific interactions. Within trophic cascades, herbivores can be top–down controlled by predators or bottom–up controlled by host plant quality and host symbionts, such as plant-associated micro-organisms. Synchronization of trophic levels is required to prevent insect herbivore (pest) outbreaks. In a common garden experiment, we simulated an earlier arrival time (~2 weeks) of the aphid Rhopalosiphum padi...

Data from: How do cuticular hydrocarbons evolve? Physiological constraints and climatic and biotic selection pressures act on a complex functional trait

Florian Menzel, Bonnie B. Blaimer & Thomas Schmitt
Cuticular hydrocarbons (CHCs) cover the cuticles of virtually all insects, serving as a waterproofing agent and as a communication signal. The causes for the high CHC variation between species, and the factors influencing CHC profiles, are scarcely understood. Here, we compare CHC profiles of ant species from seven biogeographic regions, searching for physiological constraints and for climatic and biotic selection pressures. Molecule length constrained CHC composition: long-chain profiles contained fewer linear alkanes, but more hydrocarbons...

Data from: Allatostatin A signalling in Drosophila regulates feeding and sleep and is modulated by PDF

Jiangtian Chen, Wencke Reiher, Christiane Hermann-Luibl, Azza Sellami, Paola Cognigni, Shu Kondo, Charlotte Helfrich-Förster, Jan A. Veenstra & Christian Wegener
Feeding and sleep are fundamental behaviours with significant interconnections and cross-modulations. The circadian system and peptidergic signals are important components of this modulation, but still little is known about the mechanisms and networks by which they interact to regulate feeding and sleep. We show that specific thermogenetic activation of peptidergic Allatostatin A (AstA)-expressing PLP neurons and enteroendocrine cells reduces feeding and promotes sleep in the fruit fly Drosophila. The effects of AstA cell activation are...

Data from: Herbivore-specific induction of defence metabolites in a grass-endophyte association

Benjamin Fuchs, Markus Krischke, Martin J. Mueller & Jochen Krauss
Plants have developed a variety of defence strategies against herbivores. One possible strategy is the induced production of metabolites following herbivore attack. Plant-associated micro-organisms can be the source of such defensive compounds. For example, cool-season grasses can be associated with systemic endophytic fungi of the genus Epichloё, which produce herbivore-toxic alkaloids. In a controlled common garden approach, we tested the hypothesis that different types of herbivory induce endophyte growth and increase the endophyte-mediated production of...

Registration Year

  • 2016
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Resource Types

  • Dataset
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Affiliations

  • University of Würzburg
    10
  • University of Padua
    1
  • Ghent University
    1
  • Princeton Medical Institute
    1
  • University of Queensland
    1
  • University of Novi Sad
    1
  • Lund University
    1
  • University of Cambridge
    1
  • Smithsonian Institution
    1
  • Philipp University of Marburg
    1