9 Works

Data from: Who directs group movement? Leader effort vs follower preference in stickleback fish of different personality

Shinnosuke Nakayama, Jennifer L. Harcourt, Rufus A. Johnstone & Andrea Manica
During collective movement, bolder individuals often emerge as leaders. Here, we investigate whether this reflects a greater propensity of bold individuals to initiate movement, or a preference for shy individuals to follow a bolder leader. We set up trios of stickleback fish comprising a focal individual who was either bold or shy, and one other individual of each personality. We then recorded the movements of all individuals in and out of cover in a foraging...

Data from: Principal component analysis as an alternative treatment for morphometric characters: phylogeny of caseids as a case study

Neil Brocklehurst, Marco Romano & Jörg Fröbisch
In a recent study, the phylogeny of Caseidae (a herbivorous family of Palaeozoic synapsids belonging to the paraphyletic grade known as pelycosaurs) was analysed with a dataset employing more than three hundred continuous morphological characters in an effort to follow the principles of total evidence. Continuous characters are a source of great debate, with disagreements surrounding their suitability for and treatment in phylogenetic analysis. A number of shortcomings were identified in the handling of continuous...

Data from: Divergence of cuticular hydrocarbons in two sympatric grasshopper species and the evolution of fatty acid synthases and elongases across insects

Jonas Finck, Emma L. Berdan, Frieder Mayer, Bernhard Ronacher & Sven Geiselhardt
Cuticular hydrocarbons (CHCs) play a major role in the evolution of reproductive isolation between insect species. The CHC profiles of two closely related sympatric grasshopper species, Chorthippus biguttulus and C. mollis, differ mainly in the position of the first methyl group in major methyl-branched CHCs. The position of methyl branches is determined either by a fatty acid synthase (FAS) or by elongases. Both protein families showed an expansion in insects. Interestingly, the FAS family showed...

Data from: Multivariate female preference tests reveal latent perceptual biases

David A. Gray, Eileen Gabel, Thomas Blankers & R. Matthias Hennig
The question of why males of many species produce elaborate mating displays has now been largely resolved: females prefer to mate with males that produce such displays. However, the question of why females prefer such displays has been controversial, with an emerging consensus that such displays often provide information to females about the direct fitness benefits that males provide to females and/or the indirect fitness benefits provided to offspring. Alternative explanations, such as production of...

Data from: “Darwin’s corollary” and cytoplasmic incompatibility induced by Cardinium may contribute to speciation in Encarsia wasps (Hymenoptera: Aphelinidae)

Marco Gebiola, Suzanne E. Kelly, Peter Hammerstein, Massimo Giorgini, Molly S. Hunter & Martha S. Hunter
The potential importance of cytoplasmic incompatibility (CI) – inducing bacterial symbionts in speciation of their arthropod hosts has been debated. Theoretical advances have led to a consensus that a role is plausible when CI is combined with other isolating barriers. However, the insect model systems Nasonia and Drosophila are the only two experimental examples documented. Here we analyzed the components of reproductive isolation between the parasitoid wasp Encarsia suzannae, which is infected by the CI-inducing...

Data from: A genes eye view of ontogeny: De novo assembly and profiling of the Gryllus rubens transcriptome

Emma L. Berdan, Thomas Blankers, Isabelle Waurick, Camila J. Mazzoni & Frieder Mayer
Crickets (Orthoptera:Gryllidae) are widely used model organisms for developmental, evolutionary, neurobiological, and behavioral research. Here we developed a de novo transcriptome from pooled RNA-seq Illumina data spanning 7 stages in the life cycle of Gryllus rubens. Approximately 705 Mbp of data was assembled and filtered to form 27,312 transcripts. We were able to annotate 52% of our transcripts using BLAST and assign at least one gene ontology term to 41%. Pooled samples from three different...

Data from: Fast-slow life history is correlated with individual differences in movements and prey selection in an aquatic predator in the wild

Shinnosuke Nakayama, Tobias Rapp & Robert Arlinghaus
Fast and slow life histories are proposed to covary with consistent individual differences in behaviour, but little is known whether it holds in the wild, where individuals experience natural fluctuations of the environment. We investigated whether individual differences in behaviour, such as movement traits and prey selection, are linked to variation in life-history traits in Eurasian perch (Perca fluviatilis) in the wild. Using high-resolution acoustic telemetry, we collected the positional data of fish in a...

Data from: Monitoring of plant-environment interactions by high throughput FTIR spectroscopy of pollen

Murat Bağcıoğlu, Achim Kohler, Stephan Seifert, Janina Kneipp & Boris Zimmermann
Fourier transform infrared (FTIR) spectroscopy enables chemical analysis of pollen samples for plant phenotyping to study plant–environment interactions, such as influence of climate change or pathogens. However, current approach, such as microspectroscopy and attenuated total reflection spectroscopy, does not allow for high-throughput protocols. This study at hand suggests a new spectroscopic method for high-throughput characterization of pollen. Samples were measured as thin films of pollen fragments using a Bruker FTIR spectrometer with a high-throughput eXTension...

Data from: Timing of head movements is consistent with energy minimization in walking ungulates

David M. Loscher, Fiete Meyer, Kerstin Kracht & John A. Nyakatura
Many ungulates show a conspicuous nodding motion of the head when walking. Until now, the functional significance of this behaviour remained unclear. Combining in vivo kinematics of quadrupedal mammals with a computer model, we show that the timing of vertical displacements of the head and neck is consistent with minimizing energy expenditure for carrying these body parts in an inverted pendulum walking gait. Varying the timing of head movements in the model resulted in increased...

Registration Year

  • 2016
    9

Resource Types

  • Dataset
    9

Affiliations

  • Humboldt University of Berlin
    9
  • Museum für Naturkunde
    4
  • Freie Universität Berlin
    2
  • California State University, Northridge
    1
  • University of Cambridge
    1
  • Leibniz Institute of Freshwater Ecology and Inland Fisheries
    1
  • Berlin Brandenburg Institute of Advanced Biodiversity Research
    1
  • University of Arizona
    1
  • Technical University of Berlin
    1
  • Norwegian University of Life Sciences
    1