27 Works

Pre-adaptation to climate change through topography-driven evolution of traits and their plasticity

Hanne De Kort, Bart Panis, Steven Janssens, Kenny Helsen & Olivier Honnay
1. Climate change will increase the level of drought stress experienced by plant communities, but the spatial distribution of projected changes in dryness remains highly uncertain. Species can, to some extent, deal with climate uncertainty through natural variation in adaptive responses to environmental heterogeneity and predictability. Biodiversity conservation could thus target populations pre-adapted to climatic heterogeneity to anticipate climate uncertainty. Disentangling evolution of trait means vs. trait plasticity, however, requires a sampling design with genetic...

Identification of a queen pheromone mediating the rearing of adult sexuals in the pharaoh ant Monomorium pharaonis

Ricardo Caliari Oliveira
Division of labour between reproductive queens and mostly sterile workers is among the defining characteristics of social insects. Queen-produced chemical signals advertising her presence and fertility status, i.e. queen pheromones, are normally used to assert the queen’s reproductive dominance in the colony. Most queen pheromones identified to date are chemicals that stop the daughter workers from reproducing. Nevertheless, it has long been suggested that queen pheromones could also regulate reproduction in different ways. In some...

Data from: Oxidative stress mediates rapid compensatory growth and its costs

Lizanne Janssens & Robby Stoks
1. While oxidative stress has been hypothesized to function both as a constraint on and a cost of growth, its mediatory role in shaping life history is still highly debated. Empirical studies about the role of oxidative stress in shaping growth responses and the associated costs are scarce and the two hypotheses have never been combined in one study. 2. By directly manipulating oxidative stress we tested its role in determining compensatory growth responses and...

European soil seed bank communities across a climate and land-cover gradient

Jan Plue, Hans Van Calster, Inger Auestad, Sofia Basto, Reneé M. Bekker, Hans Henrik Bruun, Richard Chevalier, Guillaume Decocq, Ulf Grandin, Martin Hermy, Hans Jacquemyn, Anna Jakobsson, Rein Kalamees, Rob H. Marrs, Bryndis Marteinsdóttir, Per Milberg, Robin J. Pakeman, Gareth Phoenix, Ken Thompson, Vigdis Vandvik, Markus Wagner, Sara A.O. Cousins, Ove Eriksson, Jamshid Ghorbani, Małgorzata Jankowska-Błaszczuk … & Alistair G. Auffret
This is the data set used for the publication Buffering effects of soil seed banks on plant community composition in response to land use and climate, published in the journal Global Ecology and Biogeography. Aim. Climate and land use are key determinants of biodiversity, with past and ongoing changes posing serious threats to global ecosystems. Unlike most other organism groups, plant species can possess dormant life-history stages such as soil seed banks, which may help...

Reduced stress defense responses contribute to the higher toxicity of a pesticide under warming

Vienna Delnat, Janne Swaegers, Jana Asselman & Robby Stoks
There is a pressing need to identify the molecular mechanisms underlying the, often magnifying, interactive effects between contaminants and natural stressors. We here test our hypothesis that lower general stress defense responses contribute to synergistic interactions between stressors. We focus on the widespread pattern that many contaminants are more toxic at higher temperatures. Specifically, we tested the effects of an environmentally realistic low-effect and high-effect concentration of the pesticide chlorpyrifos under warming at the gene...

Data from: Bacterial phylogeny predicts volatile organic compound composition and olfactory response of an aphid parasitoid

Tim Goelen, Islam Sobhy, Christophe Vanderaa, Felix Wäckers, Hans Rediers, Tom Wenseleers, Hans Jacquemyn & Bart Lievens
There is increasing evidence that microorganisms emit a wide range of volatile compounds (mVOCs, microbial volatile organic compounds) that act as insect semiochemicals, and therefore play an important role in insect behaviour. Although it is generally believed that phylogenetically closely related microbes tend to have similar phenotypic characteristics and therefore may elicit similar responses in insects, currently little is known about whether the evolutionary history and phylogenetic relationships among microorganisms have an impact on insect-microbe...

Innate preference hierarchies coupled with adult experience, rather than larval imprinting or transgenerational acclimation, determine host plant use in Pieris rapae

Hampus Petrén, Gabriele Gloder, Diana Posledovich, Christer Wiklund & Magne Friberg
The evolution of host range drives diversification in phytophagous insects, and understanding the female oviposition choices is pivotal for understanding host specialization. One controversial mechanism for female host choice is Hopkins’ host selection principle, where females are predicted to increase their preference for the host species they were feeding upon as larvae. A recent hypothesis posits that such larval imprinting is especially adaptive in combination with anticipatory transgenerational acclimation, so that females both allocate and...

Volatiles of bacteria associated with parasitoid habitats elicit distinct olfactory responses in an aphid parasitoid and its hyperparasitoid

Tim Goelen, Islam S. Sobhy, Christophe Vanderaa, Jetske G. De Boer, Frank Delvigne, Frédéric Francis, Felix Wäckers, Hans Rediers, Kevin J. Verstrepen, Tom Wenseleers, Hans Jacquemyn & Bart Lievens
1. To locate mating partners and essential resources such as food, oviposition sites and shelter, insects rely to a large extent on chemical cues. While most research has focused on cues derived from plants and insects, there is mounting evidence that indicates that microorganisms emit volatile compounds that may play an important role in insect behaviour. 2. In this study, we assessed how volatile compounds emitted by phylogenetically diverse bacteria affected the olfactory response of...

Inter- and intraspecific trait variation shape multidimensional trait overlap between two plant invaders and the invaded communities

Kenny Helsen, Elisa Van Cleemput, Leonardo Bassi, Bente Graae, Ben Somers, Benjamin Blonder & Olivier Honnay
Invader success and ecosystem impact are both expected to be largely driven by the functional trait distinctiveness of the resident species relative to the invaded communities. To understand the importance of trait distinctiveness for plant invasions, and the native community’s trait response to the invasion, it is key to measure multiple traits simultaneously, and to incorporate intraspecific trait variation. Here we explored multidimensional patterns of inter- and intraspecific trait variation during the invasion of two...

Optical traits perform equally well as directly-measured functional traits in explaining the impact of an invasive plant on litter decomposition

Kenny Helsen, Elisa Van Cleemput, Leonardo Bassi, Ben Somers & Olivier Honnay
1. Functional traits can help elucidate and predict the impact of invasive plant species on ecosystem functioning. Yet, this approach requires comprehensive and labor-intensive trait collection campaigns, covering intraspecific trait variation of both the invader and native species in the invaded community. One potential way to overcome these logistic constraints is using hyperspectral remote sensing technology to efficiently quantify functional trait values. Although such spectrally derived or ‘optical’ traits are known to closely link to...

Summary of the microsatellite genotyping analysis of 280 C. gariepinus samples originating from eight locations in the Congo basin using five microsatellite markers

Maarten Van Steenberge, Maarten Vanhove, Auguste Chocha Manda, Maarten Larmuseau, Belinda Swart, Faustin Khang'Mate, Allan Arndt, Bart Hellemans, Jeroen Van Houdt, Jean-Claude Micha, Stephan Koblmüller, Rouvay Roodt-Wilding & Filip Volckaert
Aim The formation history of Africa’s current river basins remains largely unknown. In order to date changes in landscape and climate, we studied the biogeography of the African freshwater fish with the largest natural distribution. We also validated biogeographic units. Location Continental Africa. Taxon Clarias gariepinus sl. Methods We investigated mitochondrial cytb sequences of 443 individuals from 97 localities, using a haplotype network and a genetic landscape analysis. We inferred a dated phylogeny using maximum...

Strong species differences in life-history do not predict oxidative stress physiology or sensitivity to an environmental oxidant

Nedim Tüzün, Sara Debecker & Robby Stoks
1. Species typically align along a fast-slow life-history continuum, yet it is not clear to what extent oxidative stress physiology can be integrated with this continuum to form a ‘pace-of-life syndrome’, especially so in invertebrates. This is important, given the assumed role of oxidative stress in mediating life-history trade-offs, and the prediction that species with a faster pace should be more vulnerable to oxidative stress. 2. We tested whether a species’ life-history pace, here represented...

Data from: Live fast, die old: oxidative stress as a potential mediator of an unexpected life-history evolution

Nedim Tüzün, Marjan De Block & Robby Stoks
Intraspecific latitudinal patterns in life history are well documented, yet underlying mechanisms of such patterns are poorly understood. To advance our insights in the evolution of latitudinal differences in two key traits, growth rate and lifespan, we evaluated the potential costs of rapid growth in terms of reduced adult lifespan, and the mediatory role of oxidative stress. We studied latitudinal differentiation in routine and experimentally increased (compensatory) larval growth rates, and in adult lifespan under...

Data from: Evolution and epidemic spread of SARS-CoV-2 in Brazil

Darlan S. Candido, Ingra M. Claro, Jaqueline G. De Jesus, William M. Souza, Filipe R. R. Moreira, Simon Dellicour, Thomas A. Mellan, Louis Du Plessis, Rafael H. M. Pereira, Flavia C. S. Sales, Erika R. Manuli, Julien Thézé, Luiz Almeida, Mariane T. Menezes, Carolina M. Voloch, Marcilio J. Fumagalli, Thaís M. Coletti, Camila A. M. Da Silva, Mariana S. Ramundo, Mariene R. Amorim, Henrique H. Hoeltgebaum, Swapnil Mishra, Mandev S. Gill, Luiz M. Carvalho, Lewis F. Buss … & Nuno R. Faria
Brazil currently has one of the fastest growing SARS-CoV-2 epidemics in the world. Owing to limited available data, assessments of the impact of non-pharmaceutical interventions (NPIs) on virus spread remain challenging. Using a mobility-driven transmission model, we show that NPIs reduced the reproduction number from >3 to 1–1.6 in São Paulo and Rio de Janeiro. Sequencing of 427 new genomes and analysis of a geographically representative genomic dataset identified >100 international virus introductions in Brazil....

Famine related mortality in early life and accelerated life histories in 19th Century Belgium

Katharina Pink, Robert Quinlan & Saskia Hin
Density-dependent and extrinsic mortality are predicted to accelerate reproductive maturation. The first 5 years of life is a proposed sensitive period for life-history regulation. This study examines the ways in which local mortality during this sensitive period was related to subsequent marriage timing in 19th Century Belgium (N women= 11,892; N men=14,140). Local mortality during the sensitive period was inversely associated with age at first marriage for men and women controlling for literacy, occupational status,...

Seasonal time constraints shape life history, physiology and behaviour independently, and decouple a behavioural syndrome in a damselfly

Nedim Tüzün, Beste Başak Savaşçı & Robby Stoks
The integration of traits into 'syndromes' has been suggested as a useful framework to advance insights in trait responses to environmental stressors. Yet, how stressors shape the consistency (‘repeatability’) of traits and their covariation at the individual level remains debated. We studied how seasonal time constraints shape trait repeatability and integration of life-history, behavioural, and physiological traits along a fast-slow continuum, using the ‘pace-of-life syndrome’ as a framework. We manipulated the photoperiod during the larval...

MSc Thesis Dataset and Workflow

Hans Kainz, Ilse Jonkers, Bryce Killen, Sien Vingerhoets & Elien Vlaeyen
The Impact of Subject-Specific Bone Geometry on Femoral Bone Growth Simulations in Children with Cerebral Palsy: Sensitivity Analysis of an Adaptive, Multi-Scale, Image-Based Workflow. The download package includes the thesis, short paper, Matlab code and results from the MSc thesis project from Elien Vlaeyen and Sien Vingerhoets, who were supervised by Hans Kainz and Ilse Jonkers.

Data from: Markov-modulated continuous-time Markov chains to identify site- and branch-specific evolutionary variation in BEAST

Guy Baele, Mandev Gill, Paul Bastide, Philippe Lemey & Marc Suchard
Markov models of character substitution on phylogenies form the foundation of phylogenetic inference frameworks. Early models made the simplifying assumption that the substitution process is homogeneous over time and across sites in the molecular sequence alignment. While standard practice adopts extensions that accommodate heterogeneity of substitution rates across sites, heterogeneity in the process over time in a site-specific manner remains frequently overlooked. This is problematic, as evolutionary processes that act at the molecular level are...

Relaxed random walks at scale

Alexander Fisher, Xiang Ji, Zhenyu Zhang, Philippe Lemey & Marc Suchard
Relaxed random walk (RRW) models of trait evolution introduce branch-specific rate multipliers to modulate the variance of a standard Brownian diffusion process along a phylogeny and more accurately model overdispersed biological data. Increased taxonomic sampling challenges inference under RRWs as the number of unknown parameters grows with the number of taxa. To solve this problem, we present a scalable method to efficiently fit RRWs and infer this branch-specific variation in a Bayesian framework. We develop...

Low circulating levels of miR-451a in girls with Polycystic Ovary Syndrome: different effects of randomized treatments

Lourdes Ibanez, Marta Diaz, Judit Bassols, Abel Lopez-Bermejo & Francis De Zegher
Context: Polycystic ovary syndrome (PCOS) is a prevalent disorder in adolescent girls, purportedly driven by hepato-visceral fat excess, and often followed by subfertility and type 2 diabetes. Objective:we studied the baseline miRNA profile of girls with PCOS, and the effects of a randomized treatment with an oral contraceptive (OC) or with spironolactone-pioglitazone-metformin (SPIOMET, aiming at loss of hepato-visceral fat excess) for 1 year. Design & Patients:The miRNA profile was assessed by RNA sequencingin girls with...

Disentangling ecological and taphonomic signals in ancient food webs

Jack Shaw, Emily Coco, Kate Wootton, Dries Daems, Andrew Gillreath-Brown, Anshuman Swain & Jennifer Dunne
Analyses of ancient food webs reveal important paleoecological processes and responses to a range of perturbations throughout Earth’s history, such as climate change. These responses can inform our forecasts of future biotic responses to similar perturbations. However, previous analyses of ancient food webs rarely accounted for key differences between modern and ancient community data, particularly selective loss of soft-bodied taxa during fossilization. To consider how fossilization impacts inferences of ancient community structure we (1) analyzed...

Gut microbiota in non-obese adolescent girls with polycystic ovary syndrome: effects of randomized treatments

Lourdes Ibáñez, Cristina Garcia-Beltran, Rita Malpique, Belen Carbonetto, Pedro González-Torres, Desirée Henares, Pedro Brotons, Carmen Muñoz-Almagro, Abel López-Bermejo & Francis De Zegher
Context: Women and obese adolescent girls with polycystic ovary syndrome (PCOS) have altered gut microbiota. Objective: To study the gut microbiota composition of non-obese adolescent girls with PCOS and the effects of randomized pharmacological treatments. Design: Randomized, open-label, single-center controlled trial. Settings: Endocrinology Department, University Hospital. Participants: 30 girls with PCOS [age 15.8 years; body mass index (BMI) 25 kg/ m2] and 31 controls [age 15.9 years; BMI 22 kg/ m2]. Intervention: PCOS girls were...

Data from: Molecular square dancing in CO-CO collisions

ZhongFa Sun, David H. Parker, Marc C. Van Hemert, Jérôme Loreau, Ad Van Der Avoird & Arthur G. Suits
Knowledge of rotational energy transfer (RET) involving carbon monoxide (CO) molecules is crucial for the interpretation of astrophysical data. As of now, our nearly perfect understanding of atom-molecule scattering shows that RET usually occurs by only a simple “bump” between partners. To advance molecular dynamics to the next step in complexity, we studied molecule-molecule scattering in great detail for collision between two CO molecules. Using advanced imaging methods and quasi-classical and fully quantum theory, we...

Reconciling seascape genetics and fisheries science in three co-distributed flatfishes

Sara Vandamme, Joost Raeymaekers, Filip Volckaert, Gregory Maes, Karl Cottenie, Eveline Diopere & Federico Calboli
Uncertainty hampers innovative mixed-fisheries management by the scales at which connectivity dynamics are relevant to management objectives. The spatial scale of sustainable stock management is species-specific and depends on ecology, life history and population connectivity. One valuable approach to understand these spatial scales is to determine to what extent population genetic structure correlates with the oceanographic environment. Here we compare the level of genetic connectivity in three co-distributed and commercially exploited demersal flatfish species living...

Conservation status assessment of banana crop wild relatives using species distribution modelling

Arne Mertens
Aim: Crop wild relatives (CWR) are an essential source of genetic material for the improvement of certain traits in related crop species. Despite their importance, increasing public, scientific and political support, large gaps exist in the amount of genetic material collected and conserved of many CWR. Here, we construct a dataset on the distribution of wild banana species (Musa spp.) and assess their risk and conservation status. We deal with the questions (1) what areas...

Registration Year

  • 2020
    27

Resource Types

  • Dataset
    27

Affiliations

  • KU Leuven
    27
  • Hospital Sant Joan de Déu Barcelona
    2
  • Ghent University
    2
  • Institut d'Investigació Biomèdica de Girona
    2
  • Swedish University of Agricultural Sciences
    2
  • Stockholm University
    2
  • University of Padua
    1
  • National Research Institute for Agriculture, Food and Environment
    1
  • London School of Hygiene & Tropical Medicine
    1
  • University of Liège
    1