18 Works

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...

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...

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...

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...

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...

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...

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...

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...

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...

Genomic signals of admixture and reinforcement between two closely related species of European sepsid flies

Martin Kapun, Athene Giesen, Wolf U Blanckenhorn, Martin A Schäfer, Kentaro K Shimizu, Rie Shimizu-Inatsugi, Bernhard Misof, Oliver Niehuis, Lars Podsiadlowski, Heidi E L Liescher & Simon Aeschbacher
Interspecific gene flow by hybridization may weaken species barriers and adaptive divergence, but can also initiate reinforcement of reproductive isolation through natural and sexual selection. However, the extent of interspecific gene flow and its consequences for the initiation and maintenance of species barriers in natural systems remain poorly understood. We first applied coalescence simulations and approximate Bayesian calculations based on microsatellite data to infer the yet unknown demographic history of the two closely related European...

In-situ feeding as a new management tool to conserve orphaned Eurasian lynx (Lynx lynx)

Joseph Premier, Martin Gahbauer, Franz Leibl & Marco Heurich
High human-caused mortality due to wildlife-vehicle-collisions and illegal killing leads to frequent cases of orphaned Eurasian lynx juveniles. Under natural conditions, this would result in starvation of the young. To avoid this, wildlife managers conventionally rear animals in captivity and release them later. However, this measure is an undesirable outcome for species conservation, managers and animals alike. Increased awareness of Eurasian lynx orphaned by human-caused mortality means managers must often intervene in endangered populations. In...

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...

All-trans retinoic acid induces synaptic plasticity in human cortical neurons

Maximilian Lenz, Pia Kruse, Amelie Eichler, Jakob Straehle, Jürgen Beck, Thomas Deller & Andreas Vlachos
A defining feature of the brain is the ability of its synaptic contacts to adapt structurally and functionally in an experience-dependent manner. In the human cortex, however, direct experimental evidence for coordinated structural and functional synaptic adaptation is currently lacking. Here, we probed synaptic plasticity in human cortical slices using the vitamin A derivative all-trans retinoic acid (atRA), a putative treatment for neuropsychiatric disorders such as Alzheimer’s disease. Our experiments demonstrated that the excitatory synapses...

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...

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...

Registration Year

  • 2021

Resource Types

  • Dataset


  • University of Freiburg
  • Zoological Research Museum Alexander Koenig
  • University of Alberta
  • University of Siena
  • Goethe University Frankfurt
  • Martin Luther University Halle-Wittenberg
  • University of Hohenheim
  • Helmholtz Zentrum München
  • University of Aveiro
  • Swiss Federal Institute of Aquatic Science and Technology