Search publications of the members of the Royal Belgian institute of natural Sciences
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Notice explicative de la carte géologique Troisvierges N°1 à 1:25000
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Molecular methods for the detection and identification of parasitoids within larval wheat midges
- Three species of cecidomyiid midges (Diptera: Cecidomyiidae) cause significant yield losses on wheat in Europe: Sitodiplosis mosellana (Géhin), Contarinia tritici (Kirby) and Haplodiplosis marginata (von Roser). Eggs and young larvae may be parasitised by a complex of hymenopteran parasitoids belonging to the Pteromalidae and Platygastridae families which contributes to natural pest control. We have developed molecular tools for detecting and identifying seven parasitoid species previously encountered in Belgium inside individual wheat midge larvae. Barcode DNA sequences from COI, 18S and 28S genes were obtained from the midges and parasitoid species. Each of the three genes allowed all the species to be distinguished although 18S was the only one displaying a barcoding gap, both between parasitoids and midges, and at the species level. Based on the 18S gene, we developed a TaqMan assay to assess parasitism in midge larvae, regardless of the midge and parasitoid species. Next, two group-specific PCR primer pairs were generated, allowing the separate amplification of midge DNA or parasitoid DNA in parasitised individuals and subsequent identification by Sanger sequencing. Finally, species-specific primers were designed to identify six parasitoid species by simple PCR amplification. These tools were successfully applied to assess the parasitism rate of S. mosellana larvae in seven Belgian fields.
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Wibrin-Houffalize 60/3-4.
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Notice explicative de la feuille Wibrin-Houffalize 60/3-4 (carte géologique de Wallonie à l'échelle de 1/25000).
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Note sur la présence de Berginnus tamarisci Wollaston, 1854 en Belgique (Insecta: Coleoptera: Mycetophagidae)
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CT-CEPH: Applying micro-CT imaging in the study of Belgian fossil nautilid cephalopods
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Sclerochronological evidence of pronounced seasonality from the late Pliocene of the southern North Sea Basin, and its implications
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Sclerochronological evidence of pronounced seasonality from the Pliocene of the southern North Sea Basin, and its implication
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Seasonal variability in a warming climate: Lessons from the Pliocene Warm Period and beyond.
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Review of Trictenotomid beetles (Coleoptera: Trictenotomidae) of India and Sri Lanka
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Shallow Suberitida (Porifera, Demospongiae) from Peru
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Megastomia crovatoi Nofroni, Renda & Vannozzi, 2022 (Gastropoda: Pyramidellidae) alive in Bozcaada Island (Aegean Sea - Turkey)
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Environmental and climatic inferences for Marine Isotope Stage 2 of southern Belgium (Meuse valley, Namur Province) based on rodent assemblages
- The environmental and climatic conditions of the Late Pleistocene of Southern Belgium are here determined for the final part of Marine Isotope Stage 3 (MIS 3) and for MIS 2 on the basis of a study of rodent assemblages. This paper provides a synthesis of several sets of environmental and climatic data from Late Pleistocene sites, all of which are located in southern Belgium. One has previously been published (Caverne Marie-Jeanne), and seven are unpublished (Cavernes de Goyet, Trou des Nutons, Trou du Frontal, Trou de Chaleux, Grotte la Chefalize, Trou du Chˆene, and Trou du Sureau). The habitat weighting and quantified ecology methods are applied to rodent material housed in the Royal Belgian Institute of Natural Sciences (RBINS, Brussels), and previous radiocarbon dates are updated, in order to reconstruct past environments. Among all the sites under analysis, the quantified ecology method shows that Trou de Chaleux corresponds to the coldest temperatures and lowest precipitation. Trou de Chaleux, with a chronology between ca. 15,964–14,014 cal yr B.P., could probably be placed in Greenland Stadial 2 (GS2) or Heinrich Event 1 (HE1). It has a rodent assemblage associated with a predominance of open dry and rocky formations, the most abundant species being the collared lemming and the narrow-headed vole. These data are found to coincide with previous studies carried out on the large-mammal, herpetofaunal, and avifaunal associations of the site, as well as on small-mammal associations from other sites in southern Belgium with similar chronology, such as Grotte Walou. Taken together, this indicates that these latest Pleistocene intervals in southern Belgium were characterized by harsh climatic and environmental conditions. In contrast, the other assemblages under study yielded much more heterogeneous results, frequently inconsistent with an attribution to the Pleistocene. This is likely to be a result of their admixture with Holocene material due to recent intrusions.
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Pleistocene hyperostotische visbotten van de stranden van Dishoek en De Banjaard,
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‘Vis en blik’ is nog geen ‘vis in blik’. Een greep uit het leven in de Stützpunkt Flugplatz aan de Zwinmonding
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A Tale of Five Fishes: First direct evidence of trade in Galilean salted fish on the Carmel coast in the early Islamic period
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(Sub-) fossiele faunavondsten en een inventarisatie van mollusken van het strand bij Dishoek afkomstig van één suppletie
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A behavioural framework for the evolution of feeding in predatory aquatic mammals
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Een midden-Romeinse rurale site in de Sigma zone ‘Wijmeers 2’ (gemeente Wichelen, Oost-Vlaanderen)
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Somewhere I belong: phylogeny and morphological evolution in a species-rich lineage of ectoparasitic flatworms infecting cichlid fishes
