Experimental increase in fecundity causes upregulation of fecundity and body maintenance genes in the fat body of ant queensSusanne Foitzik
In most organisms, fecundity and longevity are negatively associated and the molecular regulation of these two life history traits is highly interconnected. In addition, nutrient intake often has opposing effects on lifespan and reproduction. In contrast to solitary insects, the main reproductive individual of social hymenopterans, the queen, is also the most long-lived. During development, queen larvae are well-nourished, but we are only beginning to understand the impact of nutrition on the queens’ adult life...
The evolution of hemocyanin genes in Tectipleura - a multitude of conserved introns in highly diverse gastropodsGabriela Schäfer, Veronika Pedrini-Martha, Daniel John Jackson, Reinhard Dallinger & Bernhard Lieb
Background: Hemocyanin is the oxygen transporter of most molluscs. Thus, it is an essential protein of these animals which needs to be adapted perfectly to their environments. In Tectipleura, which is a very large and diverse gastropod group with >27,000 species living in all kinds of habitats, several hemocyanin genes have already been identified. They evolved independently from each other within different lineages due to multiple gene duplications and represent potential adaptations to different environments...
Data from: Dinosaurian survivorship schedules revisited: new insights from an age-structured population modelEva Maria Griebeler
Little is known on dinosaur population biology due to insufficient information on age-dependent fecundities and mortalities. So far, survivorship curves (hereafter SC) of only six dinosaurs (four tyrannosaurs, one ceratopsian, one hadrosaur) were erected from bone assemblages of aged specimens. They indicate high survival throughout most of their life with presumable higher mortalities after hatching and increasing mortalities towards its end. However, all studies ignored that assemblages must preserve stationary age distributions (i.e., the population’s...
Data from: Comparative transcriptomic analysis of the mechanisms underpinning ageing and fecundity in social insectsJudith 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...
Survival of workers and queens of the ant Temnothorax nylanderi depending on infection with the cestode Anomotaenia brevisSusanne Foitzik
Parasites can mediate severe fitness costs and are thus important selective forces shaping the evolution of host phenotypes. Social insects are hosts for a diverse group of parasites, but their impact on the phenotypic traits of their social hosts is still poorly understood. Here, we tracked the survival of tapeworm-infected ant workers, their uninfected nestmates and of ants from unparasitized colonies. Our three-year study on the ant Temnothorax nylanderi, the intermediate host of the cestode...
Reproductive manipulation by endosymbiotic Wolbachia can cause unequal inheritance, allowing the manipulator to spread and potentially impacting evolutionary dynamics in infected hosts. Tramp and invasive species are excellent models to study the dynamics of host-Wolbachia associations because introduced populations often diverge in their microbiomes after colonizing new habitats, resulting in infection polymorphisms between native and introduced populations. Ants are the most abundant group of insects on earth, and numerous ant species are classified as highly...
European Sempervivum tectorum soil pH and iButton soil temperature time series measurement raw data.Armin Georg Fabritzek, Eva Maria Griebeler & Joachim W. Kadereit
Ecogeographical displacement of homoploid hybrid lineages from their parents is well documented and considered an important mechanism to achieve reproductive isolation. In this study, we investigated the origin of the flowering plant species Sempervivum tectorum in the Massif Central (France) through homoploid hybridization between lineages of the species from the Rhine Gorge area (Germany) and the Pyrenees (France). We used genotyping-by-sequencing genetic data as evidence for the hybrid origin of the Massif Central lineage, and...
Asymmetric allelic introgression across a hybrid zone of the coal tit (Periparus ater) in the central HimalayasMartin Päckert, Hannes Wolfgramm, Jochen Martens, Till Töpfer, Melita Vamberger, Abhinaya Pathak & Heiko Stuckas
In the Himalayas, a number of secondary contact zones have been described for vicariant vertebrate taxa. However, analyses of genetic divergence and admixture are missing for most of these examples. In this study, we provide a population genetic analysis for the coal tit (Periparus ater) hybrid zone in Nepal. Intermediate phenotypes between the distinctive western ‘spot-winged tit’ (P. a. melanolophus) and eEastern Himalayan coal tits (P. a. aemodius) occur across a narrow range of less...
Johannes Gutenberg University of Mainz8
University of Regensburg2
University of Münster1
Zoological Research Museum Alexander Koenig1
Senckenberg Natural History Collections Dresden1
Senckenberg Biodiversity and Climate Research Centre1
University of Göttingen1
University of Fribourg1
University of Freiburg1