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Article Reference Have we so far only seen the tip of the iceberg? Exploring species diversity and distribution of the giant amphipod Eurythenes
Additional material of the iconic giant amphipod Eurythenes was investigated. Recently, the species E. gryllus has been separated into 12 distinct species-level lineages of which several have been described as distinct species, based on both morphology and genetics. This study revealed three additional species-level lineages from unique sampling localities, showing that with minimal sampling effort, species diversity within Eurythenes can still increase. One species-level lineage was found in the Indian Ocean and another one in the Pacific, which was subsequently identified as E. thurstoni. In addition to the three species already reported from the Southern Ocean (E. maldoror, E. gryllus s.s. and E. andhakarae), a supplementary bathyal species was found in the Weddell Sea. E. gryllus was confirmed to be amphitropical including newly sampled localities around the Kerguelen Islands and additional samples from the Svalbard Archipelago. Building on new and earlier data, geographic and bathymetric distributions of the different species that have been discovered so far are presented here and several factors are evaluated for their likelihood of having triggered past speciation events in this scavenger. Topographic and hydrographical features are discussed but rejected as sufficient reasons for the distributional patterns observed. Bathymetric segregation is interpreted with regard to what is known about the ecology of the species. The previously reported genetic break around 3000 m persists in this new data-set for all species but one. This study underlines the need of processing all individuals sampled, since two or more sympatric species are found in different proportions, and that conclusions regarding diversity and distribution may drastically change when increasing sampling intensity and coverage. Finally, I suggest here that only a mere fraction of all Eurythenes species has yet been discovered and that a more complete knowledge of the ecology of the species is of paramount importance for interpreting their evolution.
Located in Library / RBINS Staff Publications 2016
Article Reference Healed mid-shaft fracture of an Early Roman bovine femur
We evaluated a healed fracture that was observed in the shaft of a bovine femur from an Early Roman settlement context at the site of Wange, Belgium. Using external observation and X-ray images, the specimen is described, paying particular attention to displacement of the bone ends, shortening of the bone, and callus formation. Similar fractures seen in femora of a modern Derby’s antelope (Taurotragus derbianus) and of a modern eastern lowland gorilla (Gorilla gorilla graueri) are described, and we discuss why the incidence of healed femur fractures is so limited in large mammals.
Located in Library / RBINS Staff Publications
Article Reference Health and Diet of Ancient Easter Islanders: Contribution of Palaeopathology, Dental Microwear and Stable Isotopes
This paper relates to the study of the health and diet of ancient Easter Islanders. It is based on human skeletons discovered between 1934 and 2009. We have studied skeletal markers that revealed poor living conditions during growth (stress indicators) and recorded the presence of infectious diseases. The dietary reconstitution is based on dental microwear and the analysis of carbon and nitrogen stable isotopes. Our study indicates relatively good health and food conditions during childhood. However, we have found cases of infectious diseases that probably followed contact with Europeans or Americans. The dental microwear pattern is due to the dominant part of the tubers. The stable isotopes show that, on average, a little more than one third of their dietary proteins came from the sea.
Located in Library / RBINS Staff Publications
Article Reference Helix entodonta L. Pfeiffer, 1859, a terrestrial snail from Ecuador, is a species of Zilchistrophia Weyrauch, 1960 (Gastropoda: Scolodontidae): Implications for the diagnosis and interpretation of Systrophia L. Pfeiffer, 1855 and Entodina Ancey, 1887
Located in Library / RBINS Staff Publications 2024
Article Reference Hematodinium perezi (Dinophyceae: Syndiniales) in Morocco: The First Record on the African Atlantic Coast and the First Country Record of a Parasite of the Invasive Non-Native Blue Crab Callinectes sapidus
Dinoflagellates belonging to the genus Hematodinium are key parasites of marine crustaceans, primarily decapods. In this study, we document the first report of H. perezi Chatton & Poisson, 1930 on the African Atlantic coast. This is also the first parasite record in the invasive non-native Atlantic blue crab Callinectes sapidus Rathbun, 1896 in Morocco. Specimens of C. sapidus were sampled in winter 2023 from two Ramsar sites on the Moroccan Atlantic, namely Merja Zerga and Oualidia Lagoons, and were screened to detect the presence of parasites in their hemolymph. Based on staining fresh hemolymph smears, we did not detect Hematodinium in any of the 36 investigated individuals (20 and 16 from Merja Zerga and Oualidia Lagoons, respectively), probably due to methodological artifacts. The PCR-based method was revealed to be more accurate in diagnosing the Hematodinium parasite. It showed that at Merja Zerga Lagoon, 13 individuals of C. sapidus were infected by the parasite (prevalence: 65%) in comparison to four at Oualidia Lagoon (25%). Genetic analysis, based on the ITS1 rDNA gene from Hematodinium, confirmed the sequences as being those of Hematodinium perezi.
Located in Library / RBINS Staff Publications 2024
Inbook Reference Hemiptera: Fulgoridae, Lanternflies, Sakondry
Located in Library / RBINS Staff Publications 2022 OA
Article Reference Henri J. Dumont, scientist and editor
Located in Library / RBINS Staff Publications
Proceedings Reference Herbaceous Plant Availability and Use by Western Lowland Gorillas in South East Cameroon
Located in Library / RBINS Staff Publications
Article Reference Herman Roeters van Lennep (1820-1879) and the auction of his collection.
Located in Library / RBINS Staff Publications 2019
Book Reference Het meest duurzame materiaal van België. Belgisch Porfier.
Located in Library / RBINS Staff Publications 2022