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An ichthyological borderland: The fishfauna of Nyungwe National Park and surroundings (Rwanda, East Africa)
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Nyungwe National Park (NP) is a mountainous region situated in the southwestern part of Rwanda on Congo-Nile watershed. In spite of the high biodiversity in pri- mates, birds and plants, no fish were reported to occur in the park, probably because of the cold temperatures of the rivers. An expedition in 2022 examined the fish diver- sity within the Nyungwe NP and its buffer zones. Additional sampling was performed in the main river draining the park into Lake Kivu: the Kamiranzovu. Three hundred and twenty specimens belonging to 13 species were collected. Specimens were col- lected only in the western part of the park, draining towards the Congo basin. The diversity within the park proper was limited to two putative species within the com- plex of Amphilius cf. kivuensis, which were caught on either side of the Kivu–Rusizi watershed. In contrast, a higher fish diversity, including one clariid species and two species of Enteromius, was observed in the rivers at a lower altitude of the buffer zone. However, the highest species diversity was found near the mouth of Kamiran- zovu River, including 11 species, of which 4 were non-native: the guppy Poecilia reti- culata, Astatotilapia burtoni, the blue-spotted tilapia Oreochromis leucosticus and the Egyptian mouth-brooder Pseudocrenilabrus multicolor.
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RBINS Staff Publications 2025
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The bats of the Congo and of Rwanda and Burundi Revisited (Mammalia: Chiroptera)
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RBINS Staff Publications 2017
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The complete phylogeny of extant pangolins: scaling up the molecular tracing of the most trafficked mammals on earth
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RBINS Staff Publications 2017
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Genetic turnovers and northern survival during the last glacial maximum in European brown bears
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RBINS Staff Publications 2018
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Consequences of past climate change and recent human persecution on mitogenomic diversity in the arctic fox
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RBINS Staff Publications 2019
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Ancient DNA suggests modern wolves trace their origin to a Late Pleistocene expansion from Beringia
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RBINS Staff Publications 2019
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Penaeus aztecus Ives, 1891 (Crustacea, Decapoda), in the Scheldt estuary (Belgium): Isolated record or forerunner of a penaeid invasion?
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A single specimen of the penaeid prawn Penaeus aztecus (Ives, 1891) was recorded in 2018 in the brackish zone of the Scheldt estuary near Antwerp (Belgium). The presence of this species, native to the West Atlantic, might result either from ships' ballast water coming from transatlantic boat shipping, from illegal import or from a considerable expansion leap northwards from the Mediterranean Sea, where this species has recently established and now has rapidly expanding invasive populations.
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RBINS Staff Publications 2020
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A double-sided ivory comb with two animal pursuit scenes from a 6th century CE burial at Deiningen, Germany
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In the Roman world, as in many other cultures, ivory was perceived as raw material suitable for the carving of prestigious personal items. The types of Roman and Late Antique carved ivory objects that survived as well as their quantity and stylistic range is probably a result of their preservation contexts as well as their appreciation and sometimes ongoing use in later epochs. Regarding ivory combs decorated with bas-relief carvings, only nine specimens are ascribed to the Mediterranean and NW-Europe during Late Antiquity, all exclusively present biblical iconography. Information about their origin, object history and age is usually very limited. The first evidence that hunting scenes were still part of the ivory carving tradition in Late Antiquity is provided by a comb discovered in a mid-6th-century male inhumation burial at Deiningen, Nördlinger Ries. In addition to stylistic and technological comparison, SEM-imaging, ZooMS, ancient DNA (aDNA) sequencing and 87Sr/86Sr isotope ratios were applied to identify the species and possible origin. While size and structure point toward Loxodonta africana as a likely source, poor preservation of the material hindered more refined results by ZooMS or aDNA analyses and consequently a precise triangulation of the source area in combination with the strontium isotope ratios. Besides being a singular piece of craftsmanship, the ivory comb fits into an assumed network of production and distribution that spanned from Northern Africa to the Frankish realm north of the Alps.
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RBINS Staff Publications 2026
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Integrative taxonomy of giant crested Eusirus in the Southern Ocean, including the description of a new species (Crustacea: Amphipoda: Eusiridae)
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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.
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RBINS Staff Publications 2020
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Miocene stratigraphy and vertebrate paleontology along the western side of Cerros Cadena de los Zanjones (East Pisco Basin, Peru)
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RBINS Staff Publications 2025