880 results match your criteria: "Royal Belgian Institute of Natural Sciences; Vautierstraat 29; B-1000 Brussels; Belgium. pgrootaert@yahoo.co.uk.[Affiliation]"

One of the largest isotopic datasets of the ancient Eastern Mediterranean region is evaluated, based on plants (n = 410), animals (n = 210) and humans (n = 16) from Tell Tweini (Syria). Diachronic analysis of plant and faunal specimens from four main periods of occupation: Early Bronze Age (2600-2000 BC), Middle Bronze Age (2000-1600 BC), Late Bronze Age (1600-1200 BC) and Iron Age (1200-333 BC) were investigated. Mean Δ13C results from seven plant species reveal emmer and free threshing wheat, olives, bitter vetch, rye grass and barley were adequately or well-watered during all periods of occupation.

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Island faunas exhibit some of the most iconic examples where similar forms repeatedly evolve within different islands. Yet, whether these deterministic evolutionary trajectories within islands are driven by an initial, singular divergence and the subsequent exchange of individuals and adaptive genetic variation between islands remains unclear. Here, we study a gradual, repeated evolution of low-dispersive highland ecotypes from a dispersive lowland ecotype of beetles along the island progression of the Galápagos.

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Article Synopsis
  • The GBD 2021 study aims to quantify the health impacts of 88 risk factors across 204 countries from 1990 to 2021, helping to inform public health policies.
  • The analysis utilized over 54,000 data sources to assess 631 risk-outcome pairs, determining how specific risk factors contribute to various health issues.
  • By calculating relative risks and population attributable fractions, the study provides insights into the disease burden tied to each risk factor, measured in disability-adjusted life-years (DALYs).
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Documenting the seasonal temperature cycle constitutes an essential step toward mitigating risks associated with extreme weather events in a future warmer world. The mid-Piacenzian Warm Period (mPWP), 3.3 to 3.

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Lack of abundant core virome in mosquitoes from a temperate climate region despite a mosquito species-specific virome.

mSystems

June 2024

KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Division of Clinical and Epidemiological Virology, Laboratory of Viral Metagenomics, Leuven, Belgium.

In arthropod-associated microbial communities, insect-specific viruses (ISVs) are prevalent yet understudied due to limited infectivity outside their natural hosts. However, ISVs might play a crucial role in regulating mosquito populations and influencing arthropod-borne virus transmission. Some studies have indicated a core virome in mosquitoes consisting of mostly ISVs.

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Derived ornithopods, such as hadrosaurids, show a high occurrence of fossilized lesions and diseases. However, paleopathologies in iguanodontians seem to be less common, considering the rich fossil record of these taxa in Europe, in particular in Belgium, Britain and Spain. Here, we describe an iguanodontian femur discovered in England that exhibits a large overgrowth of its lateral aspect, not previously recognized in any other similar remains.

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A global meta-analysis on the drivers of salt marsh planting success and implications for ecosystem services.

Nat Commun

April 2024

State Key Laboratory of Water Environmental Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China.

Planting has been widely adopted to battle the loss of salt marshes and to establish living shorelines. However, the drivers of success in salt marsh planting and their ecological effects are poorly understood at the global scale. Here, we assemble a global database, encompassing 22,074 observations reported in 210 studies, to examine the drivers and impacts of salt marsh planting.

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Phylogenomics of Psammodynastes and Buhoma (Elapoidea: Serpentes), with the description of a new Asian snake family.

Sci Rep

April 2024

Ecological Genetics Research Unit, Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014, Helsinki, Finland.

Asian mock vipers of the genus Psammodynastes and African forest snakes of the genus Buhoma are two genera belonging to the snake superfamily Elapoidea. The phylogenetic placements of Psammodynastes and Buhoma within Elapoidea has been extremely unstable which has resulted in their uncertain and debated taxonomy. We used ultraconserved elements and traditional nuclear and mitochondrial markers to infer the phylogenetic relationships of these two genera with other elapoids.

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Background: Detailed, comprehensive, and timely reporting on population health by underlying causes of disability and premature death is crucial to understanding and responding to complex patterns of disease and injury burden over time and across age groups, sexes, and locations. The availability of disease burden estimates can promote evidence-based interventions that enable public health researchers, policy makers, and other professionals to implement strategies that can mitigate diseases. It can also facilitate more rigorous monitoring of progress towards national and international health targets, such as the Sustainable Development Goals.

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Nanoscale millefeuilles produce iridescent bill ornaments in birds.

PNAS Nexus

April 2024

Department of Biology, Evolution and Optics of Nanostructures Group, University of Ghent, Ledeganckstraat 35, 9000 Gent, Belgium.

Colors are well studied in bird plumage but not in other integumentary structures. In particular, iridescent colors from structures other than plumage are undescribed in birds. Here, we show that a multilayer of keratin and lipids is sufficient to produce the iridescent bill of .

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Background: Regular, detailed reporting on population health by underlying cause of death is fundamental for public health decision making. Cause-specific estimates of mortality and the subsequent effects on life expectancy worldwide are valuable metrics to gauge progress in reducing mortality rates. These estimates are particularly important following large-scale mortality spikes, such as the COVID-19 pandemic.

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The quality of chemical analysis is an important aspect of passive sampling-based environmental assessments. The present study reports on a proficiency testing program for the chemical analysis of hydrophobic organic compounds in silicone and low-density polyethylene (LDPE) passive samplers and hydrophilic compounds in polar organic chemical integrative samplers. The median between-laboratory coefficients of variation (CVs) of hydrophobic compound concentrations in the polymer phase were 33% (silicone) and 38% (LDPE), similar to the CVs obtained in four earlier rounds of this program.

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Theoretical dynamics studies of the CH + HBr → CH + Br reaction: effects of isotope substitution and vibrational excitation of CH.

Phys Chem Chem Phys

April 2024

Institute of Materials and Environmental Chemistry, HUN-REN Research Centre for Natural Sciences, Magyar tudósok krt. 2., H-1117 Budapest, Hungary.

The rate coefficient for two deuterium substituted isotopologues of reaction CH + HBr → CH + Br has been determined using the quasiclassical trajectory (QCT) method. We used the analytical potential energy surface (PES) fitted to high-level points in earlier work. The PES exhibits a pre-reaction van der Waals complex and a submerged potential barrier.

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Two planthopper species of the family Nogodinidae are added to the fauna of Vietnam, both from two localities in Thua Thien-Hue Province: Bach Ma National Park and Phong Dien District. The first species belongs to Meng, Wang & Wang, 2014, Constant & Pham, , and the second belongs to Distant, 1906, Meng, Wang & Wang, 2014. was previously recorded from Hainan Island, China.

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Background: Swimmer's itch, an allergic contact dermatitis caused by avian and mammalian blood flukes, is a parasitic infection affecting people worldwide. In particular, avian blood flukes of the genus Trichobilharzia are infamous for their role in swimmer's itch cases. These parasites infect waterfowl as a final host, but incidental infections by cercariae in humans are frequently reported.

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The described Nearctic species of the genus Tachydromia Meigen, 1803 (Diptera: Hybotidae, Tachydromiinae) are revised. Seventeen described species are recognised. The following two new synonyms are proposed: Tachista lundstroemi Frey, 1913 (Eurasian species) = Tachydromia enecator Melander, 1902; Tachydromia hirtipes Melander, 1928 = Tachydromia schwarzii Coquillett, 1895.

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Cetotheriidae is a family of baleen whales that went nearly extinct during the Pleistocene (excluding Caperea marginata). For a long time, the Cetotheriidae family has been seen as a problematic clade, but in the past two decades there have been various studies trying to resolve the phylogeny of this group. In 1831, Alexandre Vandelli described three cetotheriid skulls, found during a gold exploration at Adiça beach (Portugal).

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High-throughput analysis of the Trypanosoma cruzi minicirculome (mcDNA) unveils structural variation and functional diversity.

Sci Rep

March 2024

Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia.

Trypanosoma cruzi causes Chagas disease and has a unique extranuclear genome enclosed in a structure called the kinetoplast, which contains circular genomes known as maxi- and minicircles. While the structure and function of maxicircles are well-understood, many aspects of minicircles remain to be discovered. Here, we performed a high-throughput analysis of the minicirculome (mcDNA) in 50 clones isolated from Colombia's diverse T.

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The Galápagos ant fauna has long been understudied, with the last taxonomic summary being published almost a century ago. Here, a comprehensive and updated overview of the known ant species of the Galápagos Islands is provided with updated species distributions. The list is based on an extensive review of literature, the identification of more than 382,000 specimens deposited in different entomological collections, and recent expeditions to the islands.

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Purpose: To evaluate the imaging and therapeutic properties (theranostic) of Cu-labeled anti-human epidermal growth factor receptor II (HER2) monoclonal antibody trastuzumab against HER2-positive breast cancer (BC).

Methods: We conjugated trastuzumab with p-SCN-Bn-NOTA, 3p-C-NETA-NCS, or p-SCN-Bn-DOTA, and radiolabeled with [Cu]CuCl. Immunoconjugate internalization was evaluated in BT-474, JIMT-1 and MCF-7 BC cells.

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Anthropogenic factors have impacted the diversity and evolutionary trajectory of various species. This can be through factors such as pressure on population size or range, habitat fragmentation, or extensive manipulation and translocation. Here we use time-calibrated data to better understand the pattern and processes of evolution in the heavily manipulated European fallow deer (Dama dama).

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Article Synopsis
  • - Over the past 10,000 years, humans have actively influenced fallow deer populations, leading to various outcomes, including the endangered Persian fallow deer and the widespread European fallow deer, which holds unique statuses in different regions.
  • - Genetic and archaeological studies reveal that European fallow deer have two main genetic groups in Anatolia and the Balkans, which served as their primary glacial refuges, and demonstrate how humans translocated these deer across regions, often sourcing them from distant populations.
  • - The historical movement of fallow deer, influenced by myths and cultural practices, highlights the complexity between wild and domestic species, providing insights that could inform modern wildlife management strategies.
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The dilemma of valuing geodiversity: geoconservation versus geotourism.

Philos Trans A Math Phys Eng Sci

April 2024

Department of Engineering Management, University of Antwerp, Prinsstraat 13, 2000 Antwerp, Belgium.

Geodiversity and geosystem services are confronting global threats. However, the majority of conservation strategies tend to overlook the geological component within ecosystems. The existing literature centres on biodiversity, ecosystem services and their economic valuation.

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They live under our streets: ant nests (Hymenoptera, Formicidae) in urban pavements.

Biodivers Data J

April 2023

Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech - University of Liège, TERRA, Gembloux, Belgium Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech - University of Liège, TERRA Gembloux Belgium.

In the context of global insect decline, the urbanisation process plays a key role. However, urban pavements, which are considered to be impervious to biodiversity, can harbour ground-nesting insects under certain conditions. Recent observations have revealed the presence of Formicidae nests under urban pavements.

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Developing the Protocol Infrastructure for DNA Sequencing Natural History Collections.

Biodivers Data J

October 2023

Royal Botanic Garden Edinburgh, Edinburgh, United Kingdom Royal Botanic Garden Edinburgh Edinburgh United Kingdom.

Intentionally preserved biological material in natural history collections represents a vast repository of biodiversity. Advances in laboratory and sequencing technologies have made these specimens increasingly accessible for genomic analyses, offering a window into the genetic past of species and often permitting access to information that can no longer be sampled in the wild. Due to their age, preparation and storage conditions, DNA retrieved from museum and herbarium specimens is often poor in yield, heavily fragmented and biochemically modified.

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