8 Works

Data from: Predictors of new remote cerebral microbleeds after intravenous thrombolysis for ischemic stroke

Tim Bastian Braemswig, Kersten Villringer, Guillaume Turc, Hebun Erdur, Jochen B. Fiebach, Heinrich J. Audebert, Matthias Endres, Christian H. Nolte & Jan F. Scheitz
Objective: To assess the frequency, associated factors, and underlying vasculopathy of new remote cerebral microbleeds (CMB), as well as the risk of concomitant hemorrhagic complications related to new CMBs, after intravenous thrombolysis (IVT) in acute stroke patients. Methods: We conducted an observational study using data from our local thrombolysis registry. We included consecutive stroke patients with MRI (3-Tesla)-based IVT and a follow-up MRI the next day between 2008–2017 (n=396). Only CMBs located outside of the...

Data from: Demography and selection shape transcriptomic divergence in field crickets

Thomas Blankers, Sibelle Torres Vilaça, Isabelle Waurick, David A. Gray, R. Matthias Hennig, Camilla J. Mazzoni, Frieder Mayer & Emma L. Berdan
Gene flow, demography, and selection can result in similar patterns of genomic variation and disentangling their effects is key to understanding speciation. Here, we assess transcriptomic variation to unravel the evolutionary history of Gryllus rubens and G. texensis, cryptic field cricket species with highly divergent mating behavior. We infer their demographic history and screen their transcriptomes for footprints of selection in the context of the inferred demography. We find strong support for a long history...

Data from: Implications of dimeric activation of PDE6 for rod phototransduction

Trevor D. Lamb, Martin Heck & Timothy W. Kraft
We examine the implications of a recent report providing evidence that two transducins must bind to the rod phosphodiesterase to elicit significant hydrolytic activity. To predict the rod photoreceptor's electrical response, we use numerical simulation of the two-dimensional diffusional contact of interacting molecules at the surface of the disc membrane, and then we use the simulated PDE activity as the driving function for the downstream reaction cascade. The results account for a number of aspects...

Data from: Accounting for differences in species frequency distributions when calculating beta diversity in the fossil record

Neil Brocklehurst, Michael O. Day & Jörg Fröbisch
1. Beta diversity is a measure of the taxonomic differentiation between habitats/localities within an assemblage, and is normally calculated as a set of pairwise taxonomic “distances” between the localities. 2. Due to the incomplete sampling, beta diversity estimates for fossil assemblages will always be higher than the true value. However, the difference between the observed and true distances will vary greatly depending on differences in the shape of the relative abundance distribution. 3. Using simulations,...

Data from: Diversity patterns of non-mammalian cynodonts (Synapsida, Therapsida) and the impact of taxonomic practice and research history on diversity estimates

Marcus Lukic-Walther, Neil Brocklehurst, Christian F. Kammerer & Jörg Fröbisch
Non-mammalian cynodonts represent a speciose and ecologically diverse group with a fossil record stretching from the late Permian until the Cretaceous. Because of their role as major components of Triassic terrestrial ecosystems and as the direct ancestors of mammals, cynodonts are an important group for understanding Mesozoic tetrapod diversity. We examine patterns of non-mammalian cynodont species richness and the quality of their fossil record. A supertree of cynodonts is constructed from recently published trees and...

Data from: Assessing the relationship between illegal hunting of ungulates, wild prey occurrence and livestock depredation rate by large carnivores

Mahmood Soofi, Arash Ghoddousi, Thorsten Zeppenfeld, Shirko Shokri, Mobin Soufi, Lukas Egli, Abbas Jafari, Mohsen Ahmadpour, Ali Qashqaei, Taher Ghadirian, Marc Filla, Bahram Kiabi, Niko Balkenhol, Matthias Waltert & Igor Khorozyan
1. Illegal hunting of ungulates can reduce the prey base of carnivores, which can increase human-carnivore conflict (HCC) through livestock depredation. However, the relationship between ungulate poaching, wild prey abundance and livestock depredation has rarely been empirically studied. 2. We surveyed 18 sites across the Hyrcanian forest in northern Iran; a global biodiversity hotspot under pressure of illegal hunting of ungulates, prey depletion, livestock grazing and HCC. We conducted three field surveys across 1204 km...

Data from: Male-mediated species recognition among African weakly electric fishes

Rebecca Nagel, Frank Kirschbaum, Jacob Engelmann, Volker Hofmann, Felix Pawelzik & Ralph Tiedemann
Effective communication among sympatric species is often instrumental for behavioural isolation, where the failure to successfully discriminate between potential mates could lead to less fit hybrid offspring. Discrimination between con- and heterospecifics tends to occur more often in the sex that invests more in offspring production, i.e. females, but males may also mediate reproductive isolation. In this study, we show that among two Campylomormyrus African weakly electric fish species, males preferentially associate with conspecific females...

Data from: Using a robotic fish to investigate individual differences in social responsiveness in the guppy

David Bierbach, Tim Landgraf, Pawel Romanczuk, Juliane Lukas, Hai Nguyen, Max Wolf & Jens Krause
Responding towards the actions of others is one of the most important behavioral traits whenever animals of the same species interact. Mutual influences among interacting individuals may modulate the social responsiveness seen and thus makes it often difficult to study the level and individual variation in responsiveness. Here, open-loop biomimetic robots that provide standardized, non-interactive social cues can be a useful tool. These robots are not affected by the live animal’s actions but are assumed...

Registration Year

  • 2018

Resource Types

  • Dataset


  • Humboldt University of Berlin
  • Museum für Naturkunde
  • Helmholtz Centre for Environmental Research
  • Charité
  • University of Alabama at Birmingham
  • Shahid Beheshti University
  • Australian National University
  • Leibniz Institute of Freshwater Ecology and Inland Fisheries
  • McGill University
  • University of Gothenburg