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Article Reference Integrative taxonomy of giant crested Eusirus in the Southern Ocean, including the description of a new species (Crustacea: Amphipoda: Eusiridae)
Among Antarctic amphipods of the genus Eusirus, a highly distinctive clade of giant species is characterized by a dorsal, blade-shaped tooth on pereionites 5–7 and pleonites 1–3. This lineage, herein named ‘crested Eusirus’, includes two potential species complexes, the Eusirus perdentatus and Eusirus giganteus complexes, in addition to the more distinctive Eusirus propeperdentatus. Molecular phylogenies and statistical parsimony networks (COI, CytB and ITS2)of crested Eusirus are herein reconstructed. This study aims to formally revise species diversity within crested Eusirus by applying several species delimitation methods (Bayesian implementation of the Poisson tree processes model, general mixed Yule coalescent, multi-rate Poisson tree processes and automatic barcode gap discovery) on the resulting phylogenies. In addition, results from the DNA-based methods are benchmarked against a detailed morphological analysis of all available specimens of the E. perdentatus complex. Our results indicate that species diversity of crested Eusirus is underestimated. Overall, DNA-based methods suggest that the E. perdentatus complex is composed of three putative species and that the E. giganteus complex includes four or five putative species. The morphological analysis of available specimens from the E. perdentatus complex corroborates molecular results by identifying two differentiable species, the genuine E. perdentatus and a new species, herein described as Eusirus pontomedon sp. nov. ADDITIONAL KEYWORDS: alpha taxonomy – cryptic species – genetics – molecular systematics – phylogenetic systematics.
Located in Library / RBINS Staff Publications 2020
Article Reference Reply to comment by Kienle et al. 2017
Located in Library / RBINS Staff Publications 2017
Article Reference New insights on Tournaisian–Visean (Carboniferous, Mississippian) athyridide, orthotetide, rhynchonellide, and strophomenide brachiopods from southern Belgium
Located in Library / RBINS Staff Publications 2017
Article Reference Increasing knowledge on biodiversity patterns and climate changes in Earth’s history by international cooperation: introduction to the proceedings IGCP 596/SDS Meeting Brussels (2015).
Located in Library / RBINS Staff Publications 2017
Article Reference New insight on Carboniferous (Viséan) brachiopods from eastern Tafilalt (Morocco)
Located in Library / RBINS Staff Publications 2017
Article Reference A bryozoan fauna from the Mississippian (Tournaisian and Viséan) of Belgium
Located in Library / RBINS Staff Publications 2017
Article Reference Maritime ecosystem-based management in practice: Lessons learned from the application of a generic spatial planning framework in Europe
Located in Library / RBINS Staff Publications 2017
Article Reference text/texmacs Effects of temporal fluctuation in population processes of intertidal Lanice conchilega (Pallas, 1766) aggregations on its ecosystem engineering
Located in Library / RBINS Staff Publications 2017
Article Reference Identification of the African–European Erymnochelys group (Pleurodira, Podocnemididae) in the Belgian fossil record: first finding of Eocenochelus eremberti outside its type locality
An almost complete plastron, as well as several peripherals and a costal plate of a turtle from the middle Eocene of Saint-Gilles, is presented here. Although this turtle specimen was donated to the Institut royal des Sciences naturelles de Belgique (Brussels, Belgium) more than a century ago, it remained undescribed. Its study allows us to recognize the second pleurodiran in the Belgian fossil record, where, until now, the Eocene Neochelys was the only one known. The Belgian material of Neochelys is known in lower Eocene (early Ypresian) levels, but the new pleurodiran specimen comes from the middle Eocene (early Lutetian). It is the first partial articulate shell of a pleurodiran turtle recognized in Belgium, and the only member of this clade recognized in this country at specific level. The new specimen is a representative of the so-called Erymnochelys group, this lineage being known in Africa from the Upper Cretaceous to the present but in Europe only during the Eocene. It represents the first specimen of Eocenochelus eremberti identified outside its type locality, the French region of Saint-Germain-en-Laye (Yvelines, Île-de-France), where only one specimen was found. The plastron of the Belgian individual corresponds to the most complete for this species. Its analysis allows us not only to broaden the range of paleobiogeographical distribution of Eocenochelus eremberti but also to improve the knowledge about the anatomy and variability of this taxon.
Located in Library / RBINS Staff Publications 2017
Article Reference Continuity and change in animal exploitation at the transition from Antiquity to the early medieval period in the Belgian and Dutch loess region
Abstract This article studies the evolution of livestock exploitation during the late Roman Empire and the Merovingian period by highlighting significant and progressive changes in husbandry practices that are discernible from archaeozoological data relating to five settlements in the Belgian and Dutch loess region. The intensive exploitation of cattle for agricultural activities, transport, and meat supply of consumer sites during the Roman period was progressively abandoned. Pigs grew in importance during the late Empire and became predominant at all sites from the 5th century onwards. Reduction in demand for powerful draught animals for agricultural work in the loess belt is reflected by strong decrease in cattle size and robusticity in the 6th century. Kill-off patterns, sex-ratios, and pathologies related to the use of cattle for traction also point to changes in the objectives of breeding cattle. There was a shift from intensive exploitation for traction during the late Roman period to mixed breeding for meat and milk production in addition to traction during the Merovingian period. The archaeozoological results suggest a less intensive exploitation of agricultural land and a more significant exploitation of woodland. An increase in cattle is recorded at the end of the Merovingian period, in particular at the sites of the Meuse valley, coinciding with an increase in agricultural production.
Located in Library / RBINS Staff Publications 2017