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Article Reference Mitogenomics reveals high synteny and long evolutionary histories of sympatric cryptic nematode species
Species with seemingly identical morphology but with distinct genetic differences are abundant in the marine environment and frequently co-occur in the same habitat. Such cryptic species are typically delineated using a limited number of mitochondrial and/or nuclear marker genes, which do not yield information on gene order and gene content of the genomes under consideration. We used next-generation sequencing to study the composition of the mitochondrial genomes of four sympatrically distributed cryptic species of the Litoditis marina species complex (PmI, PmII, PmIII, and PmIV). The ecology, biology, and natural occurrence of these four species are well known, but the evolutionary processes behind this cryptic speciation remain largely unknown. The gene order of the mitochondrial genomes of the four species was conserved, but differences in genome length, gene length, and codon usage were observed. The atp8 gene was lacking in all four species. Phylogenetic analyses confirm that PmI and PmIV are sister species and that PmIII diverged earliest. The most recent common ancestor of the four cryptic species was estimated to have diverged 16 MYA. Synonymous mutations outnumbered nonsynonymous changes in all protein-encoding genes, with the Complex IV genes (coxI-III) experiencing the strongest purifying selection. Our mitogenomic results show that morphologically similar species can have long evolutionary histories and that PmIII has several differences in genetic makeup compared to the three other species, which may explain why it is better adapted to higher temperatures than the other species.
Located in Library / RBINS Staff Publications 2016
Article Reference Mixed breeding system in the hermaphroditic land slug Arion intermedius (Stylommatophora, Arionidae)
Located in Library / RBINS Staff Publications
Article Reference Modélisation 3D par imagerie lidar et analyse structurale de la Salle du Dôme des Grottes de Han-sur-Lesse (Belgique, Ardenne)
Located in Library / RBINS Staff Publications 2020
Techreport Reference Modellering van een alternatieve stortstrategie voor de onderhoudsbaggerwerken in de voorhaven van Zeebrugge
Located in Library / RBINS Staff Publications
Techreport Reference Modelling Low Sulphur Fuel Oil Weathering
The main objective of the IMAROS task 3.5 “modelling the weathering of low Sulphur fuel oil” was to demonstrate the ability or the inability of the existing oil weathering parameterizations to predict the weathering of the new fuel oil types. In case the current parameterizations turn out to be inaccurate, new parametrizations had to be suggested. Finally, since each European countries operate their own oil spill drift, fate and behavior model, the findings and conclusions of this task had to be reported independently of these models but as best practices that could be implemented in the different national models. To achieve all these objectives, a 3-step methodology was followed. First, a literature review has been performed to identify the state-of-the-art oil weathering parametrizations. Then, the selected weathering parameterizations were implemented in a so-called “toy model” (i.e., a light 0D oil weathering model whose only purpose was to play with the implemented weathering parameterizations). Finally, the toy model results were validated / invalidated against observations from several experiments carried out at CEDRE’s polludrome (tank filled with water able to simulate the weathering of oil at sea). The present reports strictly follow this 3-step approach. In section 2 , we define the concept of oil weathering and give a comprehensive introduction to the concept of weathering model and weathering process parametrizations. Interested readers shall find the equations of the weathering processes parametrizations in Annex I. In section 3, we present the physicochemical characteristics of the LSFO oils tested in the framework of the IMAROS project. 13 oils referred as IM1 to IM13 have been initially tested in Lab. Their properties were quite diverse, for instance with a pour point ranging between -27°C and +30°C. In a second step, weathering of 3 VLSFO oils have been tested at pilot scale (flume tank). This report focuses on these 3 oils referenced as IM-5, IM-14, and IM-15. In section 4, we present the numerical experiences we performed with our toy model to simulate the oil weathering as in CEDRE’s flume tank. In section 5, we compare and discuss the model simulation results with the observation in CEDRE’s flume tank. Finally, in section 6, we draw some conclusions and present some recommendations in the form of best practices.
Located in Library / RBINS Staff Publications 2022 OA
Article Reference MODIRISK: Mosquito vectors of disease, collection, monitoring and longitudinal data from Belgium
The MODIRISK project studied mosquito biodiversity and monitored and predicted biodiversity changes, to actively prepare to address issues of biodiversity change, especially invasive species and new pathogen risks. This work is essential given continuing global changes that may create suitable conditions for invasive species spread and the (re-)emergence of vector-borne diseases in Europe. Key strengths of MODIRISK, in the context of sustainable development, were the links between biodiversity and health and the environment, and its contribution to the development of tools for describing the spatial distribution of mosquito biodiversity. MODIRISK addressed key topics of the global Diversitas initiative, which was a main driver of the Belspo ‘Science for a Sustainable Development’ research program. Three different MODIRISK datasets were published in the Global Biodiversity Information Facility (GBIF): the Collection dataset (the Culicidae collection of the Museum of Natural History in Brussels); the Inventory dataset (data from the MODIRISK inventory effort); and the Longitudinal dataset (experiment data used for risk assessments.
Located in Library / RBINS Staff Publications 2022
Inproceedings Reference Molecular analysis of the Baikalodrilus species flock (Clitellata, Naididae), an endemic genus to Lake Baikal (Siberia, Russia)
Located in Library / RBINS Staff Publications 2016
Inproceedings Reference Molecular and morphological inference of cryptic species within Anentome wykoffi (Brandt, 1974) (Gastropoda: Nassariidae) from Thailand
Located in Library / RBINS Staff Publications 2023 OA
Inproceedings Reference Molecular barcoding capacities for a sharper picture of wildmeat consumption in Central Africa
Located in Library / RBINS Staff Publications 2023 OA
Article Reference Molecular composition and ultrastructure of Jurassic paravian feathers
The Middle-Late Jurassic fossil assemblage found in the Tiaojishan Formation of Liaoning Province in northeastern China has yielded unparalleled evidence on the early evolution of birds1–4. Most importantly, the identification of various feather-like integumental appendages in non-avian and stem avialan theropods has illuminated the diversity and distribution of plumage structures during their adaptive transition towards use in flight4. Epidermal traces in the Tiaojishan Formation are preserved as either faint impressions or phosphatised and carbonised residues4,5. The latter were long thought to be a product of keratin-degrading bacteria6. However, more recent interpretations have favoured fossilised melanosomes; that is, melanin-bearing cellular organelles responsible in part for the colouration of skin and its structural derivatives7. This landmark hypothesis has spawned an entirely new field of exploratory inference into dinosaurian colour5,7–11, behaviour5 and physiology12.
Located in Library / RBINS collections by external author(s)