50 Works

Rapid adaptive evolution to drought in a subset of plant traits in a large-scale climate change experiment

Johannes Metz, Christian Lampei, Laura Bäumler, Hervé Bocherens, Hannes Dittberner, Lorenz Henneberg, Juliette De Meaux & Katja Tielbörger
Rapid evolution of traits and of plasticity may enable adaptation to climate change, yet solid experimental evidence under natural conditions is scarce. Here, we imposed rainfall manipulations (+30%, control, -30%) for ten years on entire natural plant communities in two Eastern Mediterranean sites. Additional sites along a natural rainfall gradient and selection analyses in a greenhouse assessed whether potential responses were adaptive. In both sites, our annual target species Biscutella didyma consistently evolved earlier phenology...

Data from: The diverse dietary profiles of MIS 3 cave bears from the Romanian Carpathians: insights from stable isotope (δ13C and δ15N) analysis

Marius Robu, Jonathan G. Wynn, Ionuţ C. Mirea, Alexandru Petculescu, Marius Kenesz, Cristina M. Puşcaş, Marius Vlaicu, Erik Trinkaus & Silviu Constantin
Late Pleistocene European cave bears (Ursus spelaeus) have been considered to be largely vegetarian, although stable isotope data (δ13C and δ15N values) from the Romanian Carpathians has suggested considerable dietary variation. Here we evaluate previous and additional adult cave bear isotopic data from four Marine Isotope Stage 3 (MIS 3) sites in the Carpathians. Peştera Urşilor (N = 35), Peştera Cioclovina (N = 32), Peştera Muierilor (N = 8), and Peştera cu Oase (N =...

Data from: A new mechanistic approach for the further development of a population with established size bimodality

Lisa Heermann, Donald L. DeAngelis & Jost Borcherding
Usually, the origin of a within-cohort bimodal size distribution is assumed to be caused by initial size differences or by one discrete period of accelerated growth for one part of the population. The aim of this study was to determine if more continuous pathways exist allowing shifts from the small to the large fraction within a bimodal age-cohort. Therefore, a Eurasian perch population, which had already developed a bimodal size-distribution and had differential resource use...

Data from: A potential role for GSK3beta in glucose-driven intrauterine catch-up growth in maternal obesity

Sarah Appel, Jon Grothe, Sarah Storck, Ruth Janoschek, Inga Bae-Gartz, Maria Wohlfarth, Marion Handwerk, Eva Hucklenbruch-Rother, Alexandra Gellhaus & Jörg Dötsch
Obesity and an unhealthy nutrition are on the rise and affect also women in childbearing age and hence, during pregnancy. Despite normal or even high birth weight the offspring suffers from long term metabolic risks. We hypothesized that fetal growth is disturbed during different intrauterine phases. Underlying molecular events remain elusive. Female mice were fed either a control diet (SD) or a high fat diet (HFD) after weaning until mating and during pregnancy. Pregnant mice...

Data from: Unraveling the causes of adaptive benefits of synonymous mutations in TEM-1 β-lactamase

Mark P. Zwart, Martijn F. Schenk, Sungmin Hwang, Bertha Koopmanschap, Niek De Lange, Lion Van De Pol, Tran T.T. Nga, Ivan G. Szendro, Joachim Krug & J. Arjan G.M. De Visser
While synonymous mutations were long thought to be without phenotypic consequences, there is growing evidence they can affect gene expression, protein folding and ultimately the fitness of an organism. In only a few cases have the mechanisms by which synonymous mutations affect the phenotype been elucidated. We previously identified 48 mutations in TEM-1 β-lactamase that increased resistance of Escherichia coli to cefotaxime, 10 of which were synonymous. To better understand the molecular mechanisms underlying the...

The Caucasian dwarf goby, a new alien Gobiidae spreading at the Lower Rhine, Germany

Jost Borcherding, Dominik Aschemeier, Jacqueline Bruhy, Lisa Heermann, Jan Lindner, Sophia Lara Schröder, Katalin Wagner & Stefan Staas
With the first catch of the Caucasian dwarf goby Knipowitschia cf. caucasica at the Lower Rhine, we now describe the distribution in this area, add first data on the population structure and feeding in the new habitat and draw attention to this new member of the fish community in western European countries.

Uncovering key metabolic determinants of the drug interactions between trimethoprim and erythromycin in Escherichia coli

Qin Qi, S Andreas Angermayr & Tobias Bollenbach
Understanding interactions between antibiotics used in combination is an important theme in microbiology. Using the interactions between the antifolate drug trimethoprim and the ribosome-targeting antibiotic erythromycin in Escherichia coli as a model, we applied a transcriptomic approach for dissecting interactions between two antibiotics with different modes of action. When trimethoprim and erythromycin were combined, the transcriptional response of genes from the sulfate reduction pathway deviated from the dominant effect of trimethoprim on the transcriptome. We...

Data from: Ovipositor and mouthparts in a fossil insect support a novel ecological role for early orthopterans in 300 million years old forests

Lu Chen, Alexander Blanke, Jun-Jie Gu, Qiang Yang, Dong Ren & Olivier Béthoux
A high portion of the earliest known, Pennsylvanian, insect fauna is composed of the so-called ‘lobeattid insects’, which systematic affinities and role as foliage feeders remain debated. We investigated hundreds of samples of a new lobeattid species from the Xiaheyan locality using a combination of photographic techniques, including Reflectance Transforming Imaging, and geometric morphometrics, to document its morphology, and infer its phylogenetic position and ecological role. Ctenoptilus frequens sp. nov. possessed a sword-shaped ovipositor whose...

Phenotypic convergence in a natural Daphnia population acclimated to low temperature

Christian Werner, Kathrin A. Otte & Eric Von Elert
Fluidity of a given membrane decreases at lower ambient temperatures, whereas it rises at increasing temperatures, which is achieved through changes in membrane lipid composition. In consistence with homeoviscous adaptation theory, lower temperatures result in increased tissue concentrations of polyunsaturated fatty acids (PUFAs) in D. magna, suggesting a higher PUFA requirement at lower temperatures. However, so far homeoviscous adaptation has been suggested for single or geographically separated Daphnia genotypes only. Here we investigated changes in...

Additional file 2 of Analyzing pre-service biology teachers’ intention to teach evolution using the theory of planned behavior

Helena Aptyka & Jörg Großschedl
Additional file 2. This file comprises the output of the Little’s test of missing completely at random (MCAR) and the multiple imputing by using the expectation-maximum (EM) algorithm in SPSS.

Additional file 3 of Analyzing pre-service biology teachers’ intention to teach evolution using the theory of planned behavior

Helena Aptyka & Jörg Großschedl
Additional file 3. This file encompasses the script for the analyses and the results of the article.

Data from: Stronger neural modulation by visual motion intensity in autism spectrum disorders

Ina Peiker, Till R. Schneider, Elizabeth Milne, Daniel Schöttle, Kai Vogeley, Alexander Münchau, Odette Schunke, Markus Siegel, Andreas K. Engel & Nicole David
Theories of autism spectrum disorders (ASD) have focused on altered perceptual integration of sensory features as a possible core deficit. Yet, there is little understanding of the neuronal processing of elementary sensory features in ASD. For typically developed individuals, we previously established a direct link between frequency-specific neural activity and the intensity of a specific sensory feature: Gamma-band activity in the visual cortex increased approximately linearly with the strength of visual motion. Using magnetoencephalography (MEG),...

Data from: Transcriptomic data from panarthropods shed new light on the evolution of insulator binding proteins in insects

Thomas Pauli, Lucia Vedder, Daniel Dowling, Malte Petersen, Karen Meusemann, Alexander Donath, Ralph S. Peters, Lars Podsiadlowski, Christoph Mayer, Shanlin Liu, Xin Zhou, Peter Heger, Thomas Wiehe, Lars Hering, Georg Mayer, Bernhard Misof & Oliver Niehuis
Background Body plan development in multi-cellular organisms is largely determined by homeotic genes. Expression of homeotic genes, in turn, is partially regulated by insulator binding proteins (IBPs). While only a few enhancer blocking IBPs have been identified in vertebrates, the common fruit fly Drosophila melanogaster harbors at least twelve different enhancer blocking IBPs. We screened recently compiled insect transcriptomes from the 1KITE project and genomic and transcriptomic data from public databases, aiming to trace the...

Data from: The best of both worlds: a combined approach for analyzing microalgal diversity via metabarcoding and morphology-based methods

Sophie Groendahl, Maria Kahlert & Patrick Fink
An increasing number of studies use next generation sequencing (NGS) to analyze complex communities, but is the method sensitive enough when it comes to identification and quantification of species? We compared NGS with morphology-based identification methods in an analysis of microalgal (periphyton) communities. We conducted a mesocosm experiment in which we allowed two benthic grazer species to feed upon benthic biofilms, which resulted in altered periphyton communities. Morphology-based identification and 454 (Roche) pyrosequencing of the...

Data from: Genome-wide patterns of transposon proliferation in an evolutionary young hybrid fish

Stefan Dennenmoser, Fritz J. Sedlazeck, Michael C. Schatz, Janine Altmüller, Matthias Zytnicki & Arne W. Nolte
Hybridization can induce transposons to jump into new genomic positions, which may result in their accumulation across the genome. Alternatively, transposon copy numbers may increase through non-allelic (ectopic) homologous recombination in highly repetitive regions of the genome. The relative contribution of transposition bursts versus recombination-based mechanisms to evolutionary processes remains unclear because studies on transposon dynamics in natural systems are rare. We assessed the genome-wide distribution of transposon insertions in a young hybrid lineage (“invasive...

RepeatModeler and RepeatMasker output files

Reuben Nowell, Christopher Wilson, Pedro Almeida, Philipp Schiffer, Diego Fontaneto, Lutz Becks, Fernando Rodriguez, Irina Arkhipova & Timothy Barraclough
Transposable elements (TEs) are selfish genomic parasites whose ability to spread autonomously is facilitated by sexual reproduction in their hosts. If hosts become obligately asexual, TE frequencies and dynamics are predicted to change dramatically, but the long-term outcome is unclear. Here, we test current theory using whole-genome sequence data from eight species of bdelloid rotifers, a class of invertebrates in which males are thus far unknown. Contrary to expectations, we find a variety of active...

Additional file 3 of Analyzing pre-service biology teachers’ intention to teach evolution using the theory of planned behavior

Helena Aptyka & Jörg Großschedl
Additional file 3. This file encompasses the script for the analyses and the results of the article.

Data from: Phytochrome diversity in green plants and the origin of canonical plant phytochromes

Fay-Wei Li, Michael Melkonian, Carl J. Rothfels, Juan Carlos Villarreal, Dennis W. Stevenson, Sean W. Graham, Gane Ka-Shu Wong, Kathleen M. Pryer & Sarah Mathews
Phytochromes are red/far-red photoreceptors that play essential roles in diverse plant morphogenetic and physiological responses to light. Despite their functional significance, phytochrome diversity and evolution across photosynthetic eukaryotes remain poorly understood. Using newly available transcriptomic and genomic data we show that canonical plant phytochromes originated in a common ancestor of streptophytes (charophyte algae and land plants). Phytochromes in charophyte algae are structurally diverse, including canonical and non-canonical forms, whereas in land plants, phytochrome structure is...

Data from: Reciprocity and the tragedies of maintaining and providing the commons

Simon Gächter, Felix Kölle & Simone Quercia
Social cooperation often requires collectively beneficial but individually costly restraint to maintain a public good, or it needs costly generosity to create one. Status quo effects predict that maintaining a public good is easier than providing a new one. Here, we show experimentally and with simulations that even under identical incentives, low levels of cooperation (the ‘tragedy of the commons’) are systematically more likely in maintenance than provision. Across three series of experiments, we find...

Toolbox for: Teaching lab for large cohorts of undergraduates: private and social information in fish

Jost Borcherding, Mike M Webster & Katja Heubel
A challenge in the Bachelor's studies in Biology, is to strive for a balance between reducing the teaching of practical scientific experiments to what is feasible in a short time, and teaching "real" science in undergraduate labs for high numbers of participants. We describe a lab in behavioural biology, with the primary focus on the student learning. However, also the underlying scientific question and the results of the experiment, namely the behaviour of the three-spined...

Macrobenthic Cumacea collected by epibenthic sledge from the Amundsen Sea in March 2008 and from the Prince Gustav Channel and Duse Bay, Eastern Antarctic Peninsula in March 2018

Katrin Linse, Laura Steib, Angelika Brandt & Davide Di Franco
In 2008 RRS James Clark Ross investigated the marine benthic biodiversity in Amundsen Sea and in 2018 the marine benthic biodiversity of the Prince Gustav Channel (PGC) area and the macrobenthic cumacean fauna (Peracarida, Crustacea) collected by epibenthic sledge (EBS) has been assessed for species richness, abundance and assemblage composition. In total 4431 cumacean specimens assigned to 58 morphospecies and 5 families were identified. To set the cumacean dataset into a wider context, published cumacean...

Dora Telugu Recordings

Felix Rau
This recording documents an unidentified Dravidian variety called Dora Telugu. This variety is considered a separate language by the speakers and their neighbours. It is spoken in the Greater Koraput region in Northern Andhra Pradesh and Southern Odisha. The recording was made during a field trip in 2009 in the Munchinput mandal of the Visakhapatnam district. The variety is distinct from Konda-Dora (ISO 639-3 kfc, Glottolog kond1295) and is locally considered a variety of Telugu,...

zOTU-Table_V1V3_Auto-FMT

Hannes Hoelz, Andreas Hiergeist, Dirk Haller, André Gessner, Tobias Schwerd, Maria J. G. T. Vehreschild, Anastasia Tsakmaklis, Jeannine Heetmeyer, Kolja Siebert, Federica De Zen, Deborah Häcker, Amira Metwaly & Klaus Neuhaus
The excel sheet contains zOTU Counts, annotated taxonomy, sample mapping, confidence intervals for the taxonomy and zOTU sequences. 16S rRNA sequencing Samples were prepared for sequencing at the sequencing core facilities in Freising (Core Facility Microbiome; ZIEL - Institute for Food & Health) and Regensburg (Institute for Clinical Microbiology and Hygiene, core facility microbiome). Microbial DNA was isolated from about 150 mg of each fecal sample by bead beating, followed by purification using guanidinium thiocyanate...

zOTU-Table_V1V3_Auto-FMT

Hannes Hoelz, Andreas Hiergeist, Dirk Haller, André Gessner, Tobias Schwerd, Maria J. G. T. Vehreschild, Anastasia Tsakmaklis, Jeannine Heetmeyer, Kolja Siebert, Federica De Zen, Deborah Häcker, Amira Metwaly & Klaus Neuhaus
The excel sheet contains zOTU Counts, annotated taxonomy, sample mapping, confidence intervals for the taxonomy and zOTU sequences. 16S rRNA sequencing Samples were prepared for sequencing at the sequencing core facilities in Freising (Core Facility Microbiome; ZIEL - Institute for Food & Health) and Regensburg (Institute for Clinical Microbiology and Hygiene, core facility microbiome). Microbial DNA was isolated from about 150 mg of each fecal sample by bead beating, followed by purification using guanidinium thiocyanate...

zOTU-Table_V1V3_Auto-FMT

Hannes Hoelz, Andreas Hiergeist, Dirk Haller, André Gessner, Tobias Schwerd, Maria J. G. T. Vehreschild, Anastasia Tsakmaklis, Jeannine Heetmeyer, Kolja Siebert, Federica De Zen, Deborah Häcker, Amira Metwaly & Klaus Neuhaus
The excel sheet contains zOTU Counts, annotated taxonomy, sample mapping, confidence intervals for the taxonomy and zOTU sequences. 16S rRNA sequencing Samples were prepared for sequencing at the sequencing core facilities in Freising (Core Facility Microbiome; ZIEL - Institute for Food & Health) and Regensburg (Institute for Clinical Microbiology and Hygiene, core facility microbiome). Microbial DNA was isolated from about 150 mg of each fecal sample by bead beating, followed by purification using guanidinium thiocyanate...

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