29 Works

Saber trágico y sensibilidad melodramática Consideraciones preliminares y enfoques latinoamericanos

Hermann Herlinghaus

Evolution of body size and wing shape trade-offs in arsenurine silkmoths

Chris Hamilton, Nathalie Winiger, Juliette Rubin, Jesse Breinholt, Rodolphe Rougerie, Ian Kitching, Jesse Barber & Akito Kawahara
One of the key objectives in biological research is understanding how evolutionary processes have produced Earth's diversity. A critical step towards revealing these processes is an investigation of evolutionary tradeoffs – that is, the opposing pressures of multiple selective forces. For millennia, nocturnal moths have had to balance successful flight, as they search for mates or host plants, with evading bat predators. However, the potential for evolutionary trade-offs between wing shape and body size are...

The emergence of ecotypes in a parasitoid wasp: a case of incipient sympatric speciation in Hymenoptera?

Pawel Malec, Justus Weber, Marc Fiebig, Denise Meinert, Carolin Rein, Ronja Reinisch, Maik Henrich, Viktoria Polyvas, Marie Pollmann, Lea Von Berg, Christian König, Johannes L.M. Steidle & Robin Böhmer
Background To understand which reproductive barriers initiate speciation is a major question in evolutionary research. Despite their high species numbers and specific biology, there are only few studies on speciation in Hymenoptera. This study aims to identify very early reproductive barriers in a local, sympatric population of Nasonia vitripennis (Walker 1836), a hymenopterous parasitoid of fly pupae. We studied ecological barriers, sexual barriers, and the reduction in F1-female offspring as a postmating barrier, as well...

Data From: Fit and fatty freshwater fish: Contrasting polyunsaturated fatty acid phenotypes between hybridizing stickleback lineages

Cameron Hudson, Nemiah Ladd, Miguel Leal, Carsten Schubert, Ole Seehausen & Blake Matthews
Long-chain polyunsaturated fatty acids are biologically important lipids that are unevenly distributed between and throughout environments. This heterogeneity can affect the evolution of metabolic processes, as populations adapt to the resource landscape that they encounter. Here, we compare fatty acid phenotypes of stickleback over two time scales of evolutionary divergence: between two lineages with different metabolic capacities for fatty acid synthesis (i.e. different copy number of the fatty acid desaturase gene; FADS2) that independently colonized...

Transcriptomic signatures of ageing vary in solitary and social forms of an orchid bee

Alice Séguret, Eckart Stolle, Fernando Fleites-Ayil, Javier Quezada-Euán, Klaus Hartfelder, Karen Meusemann, Mark Harrison, Antonella Soro & Robert Paxton
Eusocial insect queens are remarkable in their ability to maximise both fecundity and longevity, thus escaping the typical trade-off between these two traits. Several mechanisms have been proposed to underlie the remoulding of the trade-off, such as reshaping of the juvenile hormone pathway, or caste-specific susceptibility to oxidative stress. However, it remains a challenge to disentangle the molecular mechanisms underlying the remoulding of the trade-off in eusocial insects from caste-specific physiological attributes that have subsequently...

Influence of past climate change on phylogeography and demographic history of narwhals, Monodon monoceros

Marie Louis, Mikkel Skovrind, Jose Alfredo Samaniego Castruita, Cristina Garilao, Kristin Kaschner, Shyam Gopalakrishnan, James Haile, Christian Lydersen, Kit Kovacs, Eva Garde, Mads Peter Heide-Jørgensen, Lianne Postma, Steve Ferguson, Eske Willerslev & Eline Lorenzen
The Arctic is warming at an unprecedented rate, with unknown consequences for endemic fauna. However, Earth has experienced severe climatic oscillations in the past, and understanding how species responded to them might provide insight into their resilience to near-future climatic predictions. Little is known about the responses of Arctic marine mammals to past climatic shifts, but narwhals (Monodon monoceros) are considered one of the endemic Arctic species most vulnerable to environmental change. Here, we analyze...

Eine affekttheoretische Betrachtung der #MeToo-Bewegung

Lioba Martin
In October 2017 the US-American actress Alyssa Milano called upon all women around the worldwith a Twitter statement to speak out about their experience with sexual violence. The #MeToo move-ment followed, an incisive event in the feminist movement to start a wide public discourse about sexu-al violence. However, building identification with a movement on the basis of pain that is assumed tobe collective, creates certain problems, which are analyzed in this paper from a perspective...

Data from: Disentangling the aging network of a termite queen

José Manuel Monroy Kuhn, Karen Meusemann & Judith Korb
Background: Most insects are relatively short-lived, with a maximum lifespan of a few weeks, like the aging model organism, the fruit-fly Drosophila melanogaster. By contrast, the queens of many social insects (termites, ants and some bees) can live from a few years to decades. This makes social insects promising models in aging research providing insights into how a long reproductive life can be achieved. Yet, aging studies on social insect reproductives are hampered by a...

Kazak faecal microbiota transplantation induces short-chain fatty acids that promote glucagon-like peptide-1 secretion by regulating gut microbiota in db/db mice

Xue Han, Ye Wang, Peipei Zhang, Manli Zhu, Ling Li, Xinmin Mao, Xiaoting Sha & Linlin Li
Faecal microbiota transplantation (FMT) from Kazak individuals with normal glucose tolerance (KNGT) significantly reduces plasma glycolipid levels in type 2 diabetes mellitus db/db mice. However, the mechanism behind this effect has not been reported. To study the mechanism of improved glycolipid disorders in db/db mice by FMT from a KNGT donor. The normal diet group consisted of db/m mice orally administered 0.2 mL phosphate buffer saline (PBS) (db/m + PBS). For the db/db + PBS...

Reanalysis of the apoid wasp phylogeny with additional taxa and sequence data confirms the placement of Ammoplanidae as sister to bees

Manuela Sann
Apoid wasps and bees (Apoidea) are an ecologically and morphologically diverse group of aculeate Hymenoptera (ants, bees, and wasps). During the last decades, significant progress has been made in illuminating the phylogenetic relationships of the major Apoidea lineages. However, some uncertainties have remained. In this study, we present results from re-investigating the phylogeny of Apoidea by including genome skimming data of key taxa that were missing in previous investigations: a representative of Entomosericini (tribe of...

Tree diversity reduces risk of bark beetle infestation for preferred conifer species, but increases risk for less preferred hosts

Sylvie Berthelot, Tobias Frühbrodt, Peter Hajek, Charles Nock, Carsten Dormann, Jürgen Bauhus & Jochen Fründ
1. In recent decades, European temperate forests have repeatedly suffered from severe droughts. Drought-weakened forests have often become more susceptible to pest outbreaks such as bark-beetle infestations. Tree-species diversity is expected to increase resistance to drought and pests, but evidence for a positive tree diversity effect on insect pest reduction is largely circumstantial. 2. Here we tested the effects of tree diversity and biogeographic origin of tree species on bark-beetle infestation in a large, young...

Fostering Reflection, Dialogue and Collaboration among Actors at the UN Climate Change Conferences

Kathleen Anne Mar, Carolin Fraude, Thomas Bruhn, Niko Schäpke, Dorota Stasiak, Heike Schroeder, Christine Wamsler & Mark Lawrence
At their core, the UN Climate Change conferences known as “COPs” are the primary international venue for negotiating how countries should act and cooperate to avoid dangerous climate change. The 2015 Paris Agreement is its most recent notable success. Although the climate negotiations are a state government-led process, the UNFCCC (United Nations Framework Convention on Climate Change) community has increasingly recognized the need for dialogue and engagement with non-governmental stakeholders in acknowledgement of the critical...

Queering the competitive cooking show: performance on/of Netflix’s Nailed It! English

Alkım Kutlu
This paper will look at Netflix’s Nailed It!, a competitive cooking show that introduces humor to the traditional format. In my analysis, I will look at the genre conventions of both food television and competitive cooking shows to situate Nailed It! within both these genres to understand its particular position. In comparing the show to the conventional narrative structures and performances within genre conventions, I will come to the conclusion that Nailed It! is a...

Apuntes sobre la canción popular moderna en México

Hartmut Nonnenmacher
pp. 49-63. After a reflection on the peculiar status of popular song since its entry into «the era of technical reproducibility» described by Benjamin, this article addresses three central aspects of the analysis of the modern popular song: the media construction of the image of the successful singer, the textual analysis of the lyrics as well as the constitution and evolution of the genres in which the songs are grouped. To illustrate these three aspects,...

Combining molecular data sets with strongly heterogeneous taxon coverage enlightens the peculiar biogeographic history of stoneflies (Insecta: Plecoptera)

Harald Letsch, Sabrina Simon, Paul Frandsen, Shanlin Liu, Ryuichiro Machida, Christoph Mayer, Bernhard Misof, Oliver Niehuis, Xin Zhou & Benjamin Wipfler
Extant members of the ancient insect order of stoneflies exhibit a disjunct, antitropical distribution, with one major lineage exclusively occurring in the Southern Hemisphere and the other, with few exceptions, on the Northern continents. Here, we address the biogeographic distribution and phylogenetic relationships of stoneflies using a phylogenetic workflow that combines both transcriptomic and Sanger sequence datasets with heterogeneous taxon coverage. We used a dataset comprising 2997 genes derived from the transcriptomes of 30 species...

Midgut transcriptome assessment of the cockroach-hunting wasp Ampulex compressa (Apoidea: Ampulicidae)

Manuela Sann, Jovana M. Jasso-Martínez, Alexander Donath, Dieter Schulten & Alejandro Zaldívar-Riverón
The emerald jewel wasp Ampulex compressa (Hymenoptera: Ampulicidae) is a solitary wasp that is widely known for its specialized hunting of cockroaches as larvae provision. Adult wasps mainly feed on pollen and nectar, while their larvae feed on the cockroachs’ body, first as ecto- and later as endoparsitoids. Little is known about the expression of digestive, detoxification and stress-response-related genes in the midgut of A. compressa, or about its transcriptional versatility between life stages. To...

Professionsorientierte Fachwissenschaft als Element der Allgemeinen Fachdidaktik

Eva-Maria Spiegelhalter
Konzepte der fachlichen Bildung sind Elemente einer Allgemeinen Fachdidaktik. Die Bedeutung fachlicher Bildung im Bildungsprozess ist bisher nicht eindeutig geklärt. Am Freiburg Advanced Center of Education (FACE) werden aktuell in den Domänen Germanistik, Romanistik und Theologie Lehrprojekte konzipiert, die eine professionsorientierte Fachwissenschaft fokussieren. Professionsorientierte Fachwissenschaft zielt auf den Aufbau eines fachwissenschaftlichen Wissens, das strukturell auf die spätere professionelle Tätigkeit ausgerichtet ist. Der Artikel arbeitet heraus, welchen Beitrag professionsorientierte Fachwissenschaft zum Konzept der fachlichen Bildung leistet,...

Wenn nicht jetzt, wann dann – wie die Energiewende gelingt

Andreas W. Bett, Berit Erlach, Ulrich Glotzbach, Justus Haucap, Hans-Martin Henning, Jürgen Kühling, Anja Lapac, Ellen Matthies, Karen Pittel, Mario Ragwitz, Jürgen Renn, Dirk Uwe Sauer, Christoph M. Schmidt, Indra Spiecker genannt Döhmann, Frithjof Staiß, Annika Seiler, Cyril Stephanos, Eberhard Umbach & Anke Weidlich
Die nächsten vier Jahre sind Countdown und Chance zugleich: Trifft die neue Bundesregierung nicht schnell wegweisende Entscheidungen, sind die deutschen Klimaziele für 2030 und 2045 kaum mehr zu erreichen. Begreift sie hingegen die neue Legislaturperiode als Möglichkeit für eine fundamentale und zukunftsweisende Neuausrichtung, kann sie der Klima- und Energiepolitik einen dringend benötigten Anschub geben, um unwiderrufliche Folgen durch den Klimawandel abzuwenden. Mit dem Impulspapier „Wenn nicht jetzt, wann dann – wie die Energiewende gelingt“ legt...

Data from: Comparative transcriptomic analysis of the mechanisms underpinning ageing and fecundity in social insects

Judith Korb, Karen Meusemann, Denise Aumer, Abel Bernadou, Daniel Elsner, Barbara Feldmeyer, Susanne Foitzik, Jürgen Heinze, Romain Libbrecht, Silu Lin, Megha Majoe, José Manuel Monroy Kuhn, Volker Nehring, Matteo A. Negroni, Robert J. Paxton, Alice C. Séguret, Marah Stoldt & Thomas Flatt
Exceptional longevity of social insect queens despite their lifelong high fecundity remains poorly understood in ageing biology. To gain insights into the mechanisms that might underlie ageing in social insects, we compared gene expression patterns between young and old castes (both queens and workers) across different lineages of social insects (two termite, two bee and two ant species). After global analyses, we paid particular attention to genes of the insulin/insulin-like growth factor 1 signalling (IIS)/target...

Linking alternative reproductive tactics and habitat selection in Northern chamois

Luca Corlatti, Antonella Cotza & Luca Nelli
In polygynous ungulates, males may achieve fertilization through the use of alternative reproductive tactics (ARTs), discrete phenotypic variations evolved to maximize fitness. ARTs are often associated with different male spatial strategies during the rut, from territoriality to female-following. Although variation in space use patterns of rutting male ungulates is known to be largely affected by the spatial distribution of females, information on the year-round habitat selection of alternative reproductive types is scant. Here, we investigate...

Mediating between qualitative and quantitative representations for task-orientated human-robot interaction.

Michael Brenner, John Kelleher, Nick Hawes & Jeremy Wyatt

All-trans retinoic acid induces synaptopodin-dependent metaplasticity in mouse dentate granule cells

Maximilian Lenz, Amelie Eichler, Pia Kruse, Julia Muellerleile, Thomas Deller, Peter Jedlicka & Andreas Vlachos
Previously we showed that the vitamin A metabolite all-trans retinoic acid (atRA) induces synaptic plasticity in acute brain slices prepared from the mouse and human neocortex (Lenz et al., 2021). Depending on the brain region studied, distinct effects of atRA on excitatory and inhibitory neurotransmission have been reported. Here, we used intraperitoneal injections of atRA (10 mg/kg) in adult C57BL/6J mice to study the effects of atRA on excitatory and inhibitory neurotransmission in the mouse...

Spatio-temporal dynamics of abiotic and biotic properties explain biodiversity-ecosystem functioning relationships

Felix Gottschall, Simone Cesarz, Harald Auge, Kyle Kovach, Akira Mori, Charles Nock & Nico Eisenhauer
There is increasing evidence that spatial and temporal dynamics of biodiversity and ecosystem functions play an essential role in biodiversity-ecosystem functioning (BEF) relationships. Despite the known importance of soil processes for forest ecosystems, belowground functions in response to tree diversity and spatio-temporal dynamics of ecological processes and conditions remain poorly described. We propose a novel conceptual framework integrating spatio-temporal dynamics in BEF relationships and hypothesized a positive tree species richness effect on soil ecosystem functions...

Kazak faecal microbiota transplantation induces short-chain fatty acids that promote glucagon-like peptide-1 secretion by regulating gut microbiota in db/db mice

Xue Han, Ye Wang, Peipei Zhang, Manli Zhu, Ling Li, Xinmin Mao, Xiaoting Sha & Linlin Li
Faecal microbiota transplantation (FMT) from Kazak individuals with normal glucose tolerance (KNGT) significantly reduces plasma glycolipid levels in type 2 diabetes mellitus db/db mice. However, the mechanism behind this effect has not been reported. To study the mechanism of improved glycolipid disorders in db/db mice by FMT from a KNGT donor. The normal diet group consisted of db/m mice orally administered 0.2 mL phosphate buffer saline (PBS) (db/m + PBS). For the db/db + PBS...

Spatial variation in antler investment of Apennine red deer

Luca Corlatti, Stefano Mattioli, Franceso Ferretti & Sandro Nicoloso
Heterogeneity in resource availability and quality can trigger spatial patterns in the expression of sexually selected traits such as body mass and weaponry. While relationships between habitat features and phenotypic quality are well established at a broad geographical scale, information is scanty on spatial patterns at a finer, intra-population scale. We used data collected on 1965 male red deer Cervus elaphus over 20 years from a non-migratory population living on two sides of a mountainous...

Registration Year

  • 2021
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Affiliations

  • University of Freiburg
    29
  • Zoological Research Museum Alexander Koenig
    4
  • Beijing Tian Tan Hospital
    2
  • West China Hospital of Sichuan University
    2
  • Jilin University
    2
  • Fudan University Shanghai Cancer Center
    2
  • Chengdu University of Traditional Chinese Medicine
    2
  • City Of Hope National Medical Center
    2
  • University of Kent
    2
  • Guangzhou Medical University
    2