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Article Reference One to host them all: genomics of the diverse bacterial endosymbionts of the spider Oedothorax gibbosus
Bacterial endosymbionts of the groups Wolbachia , Cardinium and Rickettsiaceae are well known for their diverse effects on their arthropod hosts, ranging from mutualistic relationships to reproductive phenotypes. Here, we analysed a unique system in which the dwarf spider Oedothorax gibbosus is co-infected with up to five different endosymbionts affiliated with Wolbachia , ‘Candidatus Tisiphia’ (formerly Torix group Rickettsia ), Cardinium and Rhabdochlamydia . Using short-read genome sequencing data, we show that the endosymbionts are heterogeneously distributed among O. gibbosus populations and are frequently found co-infecting spider individuals. To study this intricate host–endosymbiont system on a genome-resolved level, we used long-read sequencing to reconstruct closed genomes of the Wolbachia , ‘Ca. Tisiphia’ and Cardinium endosymbionts. We provide insights into the ecology and evolution of the endosymbionts and shed light on the interactions with their spider host. We detected high quantities of transposable elements in all endosymbiont genomes and provide evidence that ancestors of the Cardinium , ‘Ca. Tisiphia’ and Wolbachia endosymbionts have co-infected the same hosts in the past. Our findings contribute to broadening our knowledge about endosymbionts infecting one of the largest animal phyla on Earth and show the usefulness of transposable elements as an evolutionary ‘contact-tracing’ tool.
Located in Library / RBINS Staff Publications 2023
Article Reference First record of the ant Pheidole megatron Fischer and Fisher, 2013 (Hymenoptera: Formicidae) from Rwanda
We present the first record of the ant Pheidole megatron Fischer and Fisher, 2013 in Rwanda, a species thought to be endemic to the Malagasy region. Specimens were collected in July 2019, in one of the houses located at Kivumu, in the center of Rwanda. They were first morphologically identified as Pheidole megatron using a recent identification key. Molecular identification through mitochondrial cytochrome oxidase I (COI) confirmed the morphological identification. The Rwanda sample clustered with samples from the Comoros, and it belongs to the group megacephala. Future studies may focus on the biology and ecology of this ant species in Africa. Moreover, we suggest the screening of other African populations of Pheidole megacephala using finer genetic markers with higher mutation rates to clarify the identification and spread of the species.
Located in Library / RBINS Staff Publications 2021
Article Reference Contribution to the knowledge of the Prioninae (Coleoptera, Cerambycidae) from the Mizoram State (India), with the first report of the genus Megobaralipton Lepesme & Breuning and new records from the country
Located in Library / RBINS Staff Publications 2021
Inproceedings Reference Ways forward in quantifying data uncertainty in geological databases
Issues of compatibility of geological data resulting from the merging of many different data sources and time periods may jeopardize harmonization of data products. Important progress has been made due to increasing data standardization, e.g., at a European scale through the SeaDataNet and Geo-Seas data management infrastructures. Common geological data standards are unambiguously defined, avoiding semantic overlap in geological data and associated metadata. Quality flagging is also applied increasingly, though ways in further propagating this information in data products is still at its infancy. For the Belgian and southern Netherlands part of the North Sea, databases are now rigorously re-analyzed in view of quantifying quality flags in terms of uncertainty to be propagated through a 3D voxel model of the subsurface (https://odnature.naturalsciences.be/tiles/). An approach is worked out to consistently account for differences in positioning, sampling gear, analysis procedures and vintage. The flag scaling is used in the interpolation process of geological data, but will also be used when visualizing the suitability of geological resources in a decision support system. Expert knowledge is systematically revisited as to avoid totally inappropriate use of the flag scaling process. The quality flagging is also important when communicating results to end-users. Therefore, an open data policy in combination with several processing tools will be at the heart of a new Belgian geological data portal as a platform for knowledge building (KB) and knowledge management (KM) serving the marine geoscience, the policy community and the public at large.
Located in Library / RBINS Staff Publications 2017
Article Reference A redescription of the Neotropical lanternfly Coptopola cincticrus Stål, 1869 (Fulgoridae: Poiocerinae: Poiocerini)
Located in Library / RBINS Staff Publications 2024
Article Reference Molecular phylogeny of Trictenotomidae (Coleoptera: Tenebrionoidea): insights into species validation and biogeography of genus Autocrates
Located in Library / RBINS Staff Publications 2023
Article Reference Calicnemis latreillei Laporte, 1832 (Coleoptera, Scarabaeidae, Dynastinae), a new host for the Tachinid fly Microphthalma europaea Egger, 1860
Located in Library / RBINS Staff Publications 2024
Inbook Reference Maximum bottom stresses and other hydrodynamic parameters in the Princess Elisabeth offshore wind farm zone (Belgium).
Located in Library / RBINS Staff Publications 2023
Inbook Reference Effect of wind farms on the siltation of gravel beds
Located in Library / RBINS Staff Publications 2023
Inproceedings Reference Tracking the human influence on the modern sedimentary system of the North Sea
Located in Library / RBINS Staff Publications 2023