Publications by authors named "Perrier C"

Researchers have shown growing interest in using deep neural networks (DNNs) to efficiently test the effects of perceptual processes on the evolution of color patterns and morphologies. Whether this is a valid approach remains unclear, as it is unknown whether the relative detectability of ecologically relevant stimuli to DNNs actually matches that of biological neural networks. To test this, we compare image classification performance by humans and six DNNs (AlexNet, VGG-16, VGG-19, ResNet-18, SqueezeNet, and GoogLeNet) trained to detect artificial moths on tree trunks.

View Article and Find Full Text PDF
Article Synopsis
  • The first nuclear genome assembly and complete mitochondrial genome (mitogenome) for Hylesia metabus, a species of moth, has been presented, with the nuclear genome being one of the largest for lepidopterans at 1,271 Mb.
  • The nuclear genome is organized into 31 pseudo chromosomes with a high quality BUSCO score of 99.5%, and contains a significant amount of repetitive elements, primarily located in intergenic regions.
  • The assembled genomes are available on the BIPAA website and will aid future studies in population and comparative genomics.
View Article and Find Full Text PDF

Urbanisation has been increasing worldwide in recent decades, driving environmental change and exerting novel selective pressures on wildlife. Phenotypic differences between urban and rural individuals have been widely documented in several taxa. However, the extent to which urbanisation impacts mating strategies is less known.

View Article and Find Full Text PDF
Article Synopsis
  • Emergency doctors experienced more stress during a 24-hour shift compared to a 14-hour night shift, which lasted for several days.
  • A study measured stress hormones called catecholamines in 17 doctors during different work shifts and found that certain hormone levels changed based on the length and timing of their shifts.
  • It was suggested that doctors should limit working long 24-hour shifts to help reduce stress, which can lead to health problems later on.
View Article and Find Full Text PDF

Objectives: This observational study compares the effectiveness of baricitinib (BARI), a targeted synthetic disease-modifying antirheumatic drug (tsDMARD), with alternative biological DMARDs (bDMARDs) in patients with rheumatoid arthritis (RA), from a prospective, longitudinal cohort.

Methods: We compared patients initiating a treatment course (TC) of BARI, tumour necrosis factor inhibitors (TNFi) or bDMARDs with other modes of action (OMA), during a period when all these DMARDs were available in Switzerland. The primary outcome was drug maintenance; secondary outcomes included discontinuation rates related specifically to ineffectiveness and adverse events.

View Article and Find Full Text PDF

Climate projections predict major changes in alpine environments by the end of the 21st century. To avoid climate-induced maladaptation and extinction, many animal populations will either need to move to more suitable habitats or adapt in situ to novel conditions. Since populations of a species exhibit genetic variation related to local adaptation, it is important to incorporate this variation into predictive models to help assess the ability of the species to survive climate change.

View Article and Find Full Text PDF
Article Synopsis
  • Most research on extra-pair paternity in hole-nesting birds has been conducted using artificial nesting sites like nestboxes, but its relevance to natural conditions is uncertain.
  • A study in an urban forest in Warsaw examined blue tits and great tits nesting in both natural cavities and nestboxes, finding similar rates of extra-pair paternity between the two types.
  • Although nestboxes did not affect mating rates, blue tits showed spatial differences in breeding dynamics, indicating that factors like neighbor density should be factored in when comparing mating behaviors in different studies.
View Article and Find Full Text PDF

Xylosandrus crassiusculus, a fungus-farming wood borer native to Southeastern Asia, is the most rapidly spreading invasive ambrosia species worldwide. Previous studies focusing on its genetic structure suggested the existence of cryptic genetic variation in this species. Yet, these studies used different genetic markers, focused on different geographical areas and did not include Europe.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates genetic diversity and structure among two anadromous fish species, the allis shad and the twaite shad, both of which have experienced recent population declines in Southern Europe.
  • Using genetic analyses of 706 individuals, the researchers found that allis shad, which have a different reproductive strategy, exhibit lower genetic structure compared to twaite shad, as their populations intermingle more.
  • The findings also indicate that these species have undergone historical separation with later hybridization, revealing distinct lineages and highlighting the importance of considering their demographic history in conservation efforts.
View Article and Find Full Text PDF

There is still limited consensus on the evolutionary history of species-rich temperate alpine floras due to a lack of comparable and high-quality phylogenetic data covering multiple plant lineages. Here we reconstructed when and how European alpine plant lineages diversified, i.e.

View Article and Find Full Text PDF

Spatial conservation prioritization (SCP) is a planning framework used to identify new conservation areas on the basis of the spatial distribution of species, ecosystems, and their services to human societies. The ongoing accumulation of intraspecific genetic data on a variety of species offers a way to gain knowledge of intraspecific genetic diversity and to estimate several population characteristics useful in conservation, such as dispersal and population size. Here, we review how intraspecific genetic data have been integrated into SCP and highlight their potential for identifying conservation area networks that represent intraspecific genetic diversity comprehensively and that ensure the long-term persistence of biodiversity in the face of global change.

View Article and Find Full Text PDF
Article Synopsis
  • The study examines the use of oral targeted therapies (OTTs) for cancer in patients aged 70 and older, highlighting the lack of consensus on appropriate dosing for this demographic.
  • At baseline, 29% of older patients had their OTT doses reduced, with those patients being significantly older and having poorer performance status compared to those who received standard doses.
  • The findings suggest a need for more clinical studies to assess the safety and effectiveness of dose adaptations for older adults receiving OTTs, given that a considerable number still end up on lower-than-recommended doses during treatment.
View Article and Find Full Text PDF
Article Synopsis
  • The study explores how the Great tit bird adapts to urban environments by examining both genetic (SNP) and epigenetic (CpG methylation) changes, highlighting their roles in rapid adaptation to urban life.
  • It finds that adaptation involves a polygenic response with many genes under weak selection, and significant changes in DNA methylation that primarily influence gene expression through transcription start sites and promoter regions.
  • The results suggest that urban evolution is largely nonparallel across different city-forest populations, meaning adaptations can vary significantly between locations, challenging the idea that similar urban environments lead to predictable evolutionary outcomes.
View Article and Find Full Text PDF

The island syndrome hypothesis (ISH) stipulates that, as a result of local selection pressures and restricted gene flow, individuals from island populations should differ from individuals within mainland populations. Specifically, island populations are predicted to contain individuals that are larger, less aggressive, more sociable, and that invest more in their offspring. To date, tests of the ISH have mainly compared oceanic islands to continental sites, and rarely smaller spatial scales such as inland watersheds.

View Article and Find Full Text PDF

An important focus of community ecology, including invasion biology, is to investigate functional trait diversity patterns to disentangle the effects of environmental and biotic interactions. However, a notable limitation is that studies usually rely on a small and easy-to-measure set of functional traits, which might not immediately reflect ongoing ecological responses to changing abiotic or biotic conditions, including those that occur at a molecular or physiological level. We explored the potential of using the diversity of expressed genes-functional genomic diversity (FGD)-to understand ecological dynamics of a recent and ongoing alpine invasion.

View Article and Find Full Text PDF

Due to the increasing prescription of oral anticancer therapies, the inpatient care pathway has shifted to an outpatient care pathway. This transformation requires an interdisciplinary coordination to provide a continuum of care and ensure therapeutic monitoring, as well as patient safety. To better support patients on oral anticancer therapies, a task group named "hospital-to-community pharmacist coordination" has been set up to create tools aiming at standardising the information exchanged between ambulatory and hospital pharmacists.

View Article and Find Full Text PDF
Article Synopsis
  • Understanding how human-induced landscape fragmentation affects gene flow and evolution is crucial, particularly in species like the European brook lamprey, which struggle to migrate.
  • The study focused on genetic diversity patterns in brook lampreys across various rivers, testing the impact of water currents on gene flow and the influence of a related species, the river lamprey, on genetic diversity.
  • Findings suggest that while upstream genetic diversity decreases and barriers have a moderate effect, there is still significant downstream-directed gene flow and enhanced genetic diversity in populations living alongside river lampreys, highlighting the need for tailored conservation strategies in fragmented river systems.
View Article and Find Full Text PDF

Understanding the genomic processes underlying local adaptation is a central aim of modern evolutionary biology. This task requires identifying footprints of local selection but also estimating spatio-temporal variations in population demography and variations in recombination rate and in diversity along the genome. Here, we investigated these parameters in blue tit populations inhabiting deciduous evergreen forests, and insular mainland areas, in the context of a previously described strong phenotypic differentiation.

View Article and Find Full Text PDF

Temperature is one of the best investigated environmental factors in ecological life-history studies and is increasingly considered in the contexts of climate change and urbanization. In avian ecology, few studies have examined the associations between thermal dynamics in the nest environment and its neighbouring air. Here, we placed avian nests and non-incubated eggs inside nest boxes at various air temperatures that ranged from 0.

View Article and Find Full Text PDF

Background: Whiplash-associated disorders have been the subject of much attention in the scientific literature and remain a major public health problem.

Objective: Measure the impact of a validated information booklet on the fear-avoidance beliefs of emergency physicians and their approach to management regarding the treatment of whiplash-associated disorders.

Methods: A prospective cluster randomized controlled study conducted with a sample of emergency medicine physicians.

View Article and Find Full Text PDF

Evolutionary theory predicts that positive assortative mating-the tendency of similar individuals to mate with each other-plays a key role for speciation by generating reproductive isolation between diverging populations. However, comprehensive tests for an effect of assortative mating on species richness at the macroevolutionary scale are lacking. We used a meta-analytic approach to test the hypothesis that the strength of assortative mating within populations is positively related to species richness across a broad range of animal taxa.

View Article and Find Full Text PDF

Identifying inbreeding depression early in small and declining populations is essential for management and conservation decisions. Correlations between heterozygosity and fitness (HFCs) provide a way to identify inbreeding depression without prior knowledge of kinship among individuals. In Northern Quebec and Labrador, the size of two herds of migratory caribou (Rivière-George, RG and Rivière-aux-Feuilles, RAF) has declined by one to two orders of magnitude in the last three decades.

View Article and Find Full Text PDF

Long-term field studies coupled with quantitative genomics offer a powerful means to understand the genetic bases underlying quantitative traits and their evolutionary changes. However, analyzing and interpreting the time scales at which adaptive evolution occurs is challenging. First, while evolution is predictable in the short term, with strikingly rapid phenotypic changes in data series, it remains unpredictable in the long term.

View Article and Find Full Text PDF