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Articles by Barbara Feldmeyer
Beyond formic acid: Peptides in carpenter ant venoms aid in disease protection
Abstract INTRODUCTION RESULTS AND DISCUSSION MATERIALS AND METHODS Acknowledgments Supplementary Materials REFERENCES Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Venom peptides are key to the evolutionary success of most venomous animals, including stinging ants. The stingless ant subfamily Formicinae is thought to rely solely on formic acid in their venoms, despite early, unsubstantiated hints of proteinaceous venom constituents.
Dissecting Oxidative Stress and Organismic Response to a Temperature Gradient in the Midge Chironomus riparius
1 Introduction In their natural habitats, most organisms are subjected to a range of temperatures throughout their lifespan. Temperature can vary across multiple temporal and spatial scales, ranging from gradual changes across seasons overlain by multiday weather periods and rapid fluctuations over the course of a single day, as well as spatial thermal heterogeneity within the habitat.
Dissecting Oxidative Stress and Organismic Response to various Temperature Regimes in the midge C. riparius
Abstract Oxidative stress, driven by reactive oxygen species (ROS), poses a major challenge for organisms facing temperature fluctuations. This study provides the first direct in vivo measurements of ROS production in an insect, Chironomus riparius, across a broad range of ecologically relevant temperatures. We observed a U-shaped pattern of oxidative stress, with minimal ROS levels within an optimal thermal window (12-18C) and significantly elevated stress at both cold and warm extremes.
Predicting forest tree leaf phenology under climate change using satellite monitoring and population-based GWAS
Abstract Leaf phenology, a critical determinant of plant fitness and ecosystem function, is undergoing rapid shifts due to climate change, yet its complex genetic and environmental drivers remain incompletely understood. Understanding the genetic basis of phenological adaptation is crucial for forecasting forest responses to a changing climate.
Molecular Adjustment to a Social Niche: Brain Transcriptomes Reveal Divergent Influence of Social Environment on the Two Queen Morphs of the Ant Temnothorax rugatulus
1 Introduction Polymorphisms, that is, the production of multiple morphological phenotypes within the same species and sex, are a common phenomenon in insects, especially in social insects. Alternative adult phenotypes are often plastic and regulated via food quality and quantity or temperature during larval development. In other cases, genetics can determine or at least influence morphology (Wheeler, Buck, and Evans 2006; Schwander et al. 2010; Berens, Hunt, and Toth 2015).
Transcriptomics predicts Artificial Light at Night's (ALAN) impact on fitness: nightly illumination alters gene expression pattern and negatively affects fitness components in the midge Chironomus riparius (Diptera:Chironomidae)
Abstract The emission of artificial light at night (ALAN) is rapidly increasing worldwide. Yet, evidence for its detrimental effects on various species is accumulating. While the effects of ALAN on phenotypic traits have been widely investigated, effects on the molecular level are less well understood. Here we aimed to integrate the effects of ALAN at the transcriptomic and the phenotypic level.
Age‐ and caste‐independent piRNAs in the germline and miRNA profiles linked to caste and fecundity in the ant Temnothorax rugatulus
1 INTRODUCTION The origin of eusociality is considered one of the major transitions in evolution (Szathmáry & Smith, 1995). Insect societies show a high level of complexity; their colonies have been described as superorganisms (Boomsma & Gawne, 2018; Wheeler, 1911), in which the queen functions as the germline and the workers represent the soma. In ant colonies, for example, queens and workers are closely adapted to their specific roles.
Reference genome of the ant Lasius platythorax
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Age- and caste-independent piRNAs in the germline and miRNA profiles linked to caste and fecundity in the ant Temnothorax rugatulus
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Phenotypic drought stress prediction of European beech (Fagus sylvatica) by genomic prediction and remote sensing
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Selective effects of a short transient environmental fluctuation on a natural population
New Results View ORCID ProfileMarkus Pfenninger, Quentin Foucault, Ann-Marie Waldvogel, Barbara Feldmeyer doi: https://doi.org/10.1101/2022.02.10.479864 Abstract Natural populations experience continuous and often transient changes of environmental conditions. These in turn may result in fluctuating selection pressures leading to variable demographic and evolutionary population responses.
Convergent loss of chemoreceptors across independent origins of slave-making in ants
Abstract The evolution of an obligate parasitic lifestyle often leads to the reduction of morphological and physiological traits, which may be accompanied by loss of genes and functions. Slave-maker ants are social parasites that exploit the work force of closely related ant species for social behaviours such as brood care and foraging. Recent divergence between these social parasites and their hosts enables comparative studies of gene family evolution.
Experimental increase in fecundity causes upregulation of fecundity and body maintenance genes in the fat body of ant queens
1. Introduction The interplay between fecundity and longevity and their molecular regulation are long-standing questions in evolutionary biology [1–3]. The negative association between reproduction and lifespan observed in most solitary organisms is thought to result from antagonistic pleiotropy or resource allocation trade-offs [2,4,5]. Yet, in social insects, reproduction and lifespan are positively linked: the most fertile individuals in insect societies, the queens, live the longest.
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