11 Works

Data from: Aphid cards – useful model for assessing predation rates or bias prone nonsense?

Fabian A. Boetzl, Antonia Konle & Jochen Krauss
Predation on pest organisms is an essential ecosystem function supporting yields in modern agriculture. However, assessing predation rates is intricate and they can rarely be linked directly to predator densities or functions. We tested whether sentinel prey aphid cards are useful tools to assess predation rates in the field. Therefore, we looked at aphid cards of different sizes on the ground level as well as within the vegetation. Additionally, by trapping ground dwelling predators, we...

Pathogen defence is a potential driver of social evolution in ambrosia beetles

Jon Andreja Nuotclà, Peter Biedermann & Michael Taborsky
Social immunity – the collective behavioural defences against pathogens - is considered a crucial evolutionary force for the maintenance of insect societies. It has been described and investigated primarily in eusocial insects, but its role in the evolutionary trajectory from parental care to eusociality is little understood. Here, we report on the existence, plasticity, effectiveness and consequences of social pathogen defence in experimental nests of cooperatively breeding ambrosia beetles. After an Aspergillus-spore-buffer solution or a...

How does timing of flowering affect competition for pollinators, flower visitation and seed set in an early spring grassland plant?

Sandra Kehrberger & Andrea Holzschuh
Knowledge on how the timing of flowering is related to plant fitness and species interactions is crucial to understand consequences of phenological shifts as they occur under climate change. Early flowering plants may face advantages of low competition for pollinators and disadvantages of low pollinator abundances and unfavourable weather conditions. However, it is unknown how this trade-off changes over the season and how the timing affects reproductive success. On eight grasslands we recorded intra-seasonal changes...

Data from: Linking pollen foraging of megachilid bees to their nest bacterial microbiota

Anna Voulgari-Kokota, Markus Ankenbrand, Gudrun Grimmer, Ingolf Steffan-Dewenter & Alexander Keller
Solitary bees build their nests by modifying the interior of natural cavities and they provision them with food by importing collected pollen. As a result, the microbiota of the solitary bee nests may be highly dependent on introduced materials. In order to investigate how the collected pollen is associated with the nest microbiota, we used metabarcoding of the ITS2 rDNA and the 16S rDNA to simultaneously characterize the pollen composition and the bacterial communities of...

Data from: Species richness change across spatial scales

Jonathan M. Chase, Brian J. McGill, Patrick L. Thompson, Laura H. Antão, Amanda E. Bates, Shane A. Blowes, Maria Dornelas, Andrew Gonzalez, Anne E. Magurran, Sarah R. Supp, Marten Winter, Anne D. Bjorkmann, Helge Bruelheide, Jarrett E.K. Byrnes, Juliano Sarmento Cabral, Robin Ehali, Catalina Gomez, Hector M. Guzman, Forest Isbell, Isla H. Myers-Smith, Holly P. Jones, Jessica Hines, Mark Vellend, Conor Waldock & Mary O'Connor
Humans have elevated global extinction rates and thus lowered global-scale species richness. However, there is no a priori reason to expect that losses of global species richness should always, or even often, trickle down to losses of species richness at regional and local scales, even though this relationship is often assumed. Here, we show that scale can modulate our estimates of species richness change through time in the face of anthropogenic pressures, but not in...

Data from: Species-level predation network uncovers high prey specificity in a Neotropical army ant community

Philipp O. Hoenle, Nico Blüthgen, Adrian Brückner, Daniel J.C. Kronauer, Brigitte Fiala, David A. Donoso, M. Alex Smith, Bryan Ospina Jara & Christoph Von Beeren
Army ants are among the top arthropod predators and considered keystone species in tropical ecosystems. During daily mass raids with many thousand workers, army ants hunt live prey, likely exerting strong top-down control on prey species. Many tropical sites exhibit a high army ant species diversity (>20 species), suggesting that sympatric species partition the available prey niches. However, whether and to what extent this is achieved has not been intensively studied yet. We therefore conducted...

Data from: The interplay of landscape composition and configuration: new pathways to manage functional biodiversity and agro-ecosystem services across Europe

Emily A. Martin, Matteo Dainese, Yann Clough, András Báldi, Riccardo Bommarco, Vesna Gagic, Michael Garratt, Andrea Holzschuh, David Kleijn, Anikó Kovács-Hostyánszki, Lorenzo Marini, Simon G. Potts, Henrik G. Smith, Diab Al Hassan, Matthias Albrecht, Georg K. S. Andersson, Josep Asis, Stephanie Aviron, Mario Balzan, Laura Baños-Picón, Ignasi Bartomeus, Peter Batary, Françoise Burel, Berta Caballero-López, Elena D. Concepcion … & Ingolf Steffan-Dewenter
Managing agricultural landscapes to support biodiversity and ecosystem services is a key aim of a sustainable agriculture. However, how the spatial arrangement of crop fields and other habitats in landscapes impacts arthropods and their functions is poorly known. Synthesising data from 49 studies (1515 landscapes) across Europe, we examined effects of landscape composition (% habitats) and configuration (edge density) on arthropods in fields and their margins, pest control, pollination and yields. Configuration effects interacted with...

Drosophila carboxypeptidase D (SILVER) is a key enzyme in neuropeptide processing required to maintain locomotor activity levels and survival rate

Dennis Pauls, Yasin Hamarat, Luisa Trufasu, Tim M. Schendzielorz, Gertrud Gramlich, Jörg Kahnt, Jens T. Vanselow, Andreas Schlosser & Christian Wegener
Neuropeptides are processed from larger preproproteins by a dedicated set of enzymes. The molecular and biochemical mechanisms underlying preproprotein processing and the functional importance of processing enzymes are well‐characterised in mammals, but little studied outside this group. In contrast to mammals, Drosophila melanogaster lacks a gene for carboxypeptidase E (CPE), a key enzyme for mammalian peptide processing. By combining peptidomics and neurogenetics, we addressed the role of carboxypeptidase D (dCPD) in global neuropeptide processing and...

Data from: Limitation of complementary resources affects colony growth, foraging behavior, and reproduction in bumble bees

Fabrice Requier, Kim K. Jowanowitsch, Katharina Kallnik & Ingolf Steffan-Dewenter
Resource availability has been disturbed for many organisms in agricultural landscapes including pollinator species. Abundance and diversity in flower availability benefit bee populations, however, little is known about which of protein or carbohydrate resources may limit their growth and reproductive performance. Here, we test the hypothesis of complementary resource limitation using a supplemental feeding approach. We applied this assumption with bumble bees (Bombus terrestris), assuming that colony growth and reproductive performance should depend on the...

Data from: Contribution of European forests to safeguard wild honey bee populations

Fabrice Requier, Yoan Paillet, Fabien Laroche, Benjamin Rutschmann, Jie Zhang, Fabio Lombardi, Miroslav Svoboda & Ingolf Steffan-Dewenter
Recent studies reveal the use of tree cavities by wild honey bee colonies in European forests. This highlights the conservation potential of forests for a highly threatened component of the native entomofauna in Europe, but currently no estimate of potential wild honey bee population sizes exists. Here, we analysed the tree cavity densities of 106 forest areas across Europe and inferred an expected population size of wild honey bees. Both forest and management types affected...

Data from: Strength of sexual and postmating prezygotic barriers varies between sympatric populations with different histories and species abundances

Noora Poikela, Johanna Kinnunen, Mareike Wurdack, Hannele Kauranen, Thomas Schmitt, Maaria Kankare, Rhonda R. Snook & Anneli Hoikkala
The impact of different reproductive barriers on species or population isolation may vary in different stages of speciation depending on evolutionary forces acting within species and through species’ interactions. Genetic incompatibilities between interacting species are expected to reinforce prezygotic barriers in sympatric populations and lead to cascade reinforcement between conspecific populations living within and outside the areas of sympatry. We tested these predictions and studied whether and how the strength and target of reinforcement between...

Registration Year

  • 2019

Resource Types

  • Dataset


  • University of Würzburg
  • University of Bern
  • University of Padua
  • Estación Biológica de Doñana
  • Stanford University
  • École Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine
  • University of Valle
  • Université de Sherbrooke
  • Lund University
  • Northern Illinois University