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Looking beneath the tip of the iceberg: diversification of the genus Epimeria on the Antarctic shelf (Crustacea, Amphipoda)
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RBINS Staff Publications 2016
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Patterns of neutral and adaptive genetic diversity across the natural range of Sugar pine (Pinus lambertiana).
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Demographic and environmental forces shape geographical patterns of genetic diversity. Knowledge thereof is not only important for evolutionary ecologists but, in light of future climate change, will be of interest to conservation biologists as well. Sugar pine (Pinus lambertiana Dougl.) is an ecologically important species found in mixed conifer forests across western North America. We applied a candidate-genebased environmental study to infer spatial patterns in neutral genetic variation and to identify genetic variants associated with local adaptation to drought. Using a panel of 186 candidate gene single nucleotide polymorphisms (SNP), we genotyped 313 individual trees sampled across the entire state of California, USA. We found evidence for a large-scale subdivision into two genetic clusters along the latitudinal axis and increased genetic similarity among sugar pines within a 200– 300-km boundary. Associating allelic to environmental variation indicated nine putative SNPs related to local adaptation to drought. These results provide insights into neutral population structure across the natural range of sugar pine and further substantiated a key role of the mitochondrial import inner membrane machinery in enhanced tolerance to drought and constitute important steps into unravelling the eco-evolutionary dynamics in sugar pine.
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RBINS Staff Publications 2016
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Field Method for testing Repellency of an Icaridin-Containing Skin Lotion against Vespid Wasps
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RBINS Staff Publications 2016
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Inter- and intraspecific variation in the surface pattern of the dermal bones of two sturgeon species
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Archaeological bone remains of sturgeon (Acipenser sturio/Acipenser oxyrinchus) from northwestern Europe are often identified to species on the basis of their surface morphology and then used to reconstruct the spatial distribution of the two species through time. The dermal bones of A. sturio are said to have an exterior surface pattern consisting of tubercles, while those of A. oxyrinchus are said to display alveoli. In the present paper, the validity of the surface pattern as a species-specific characteristic is critically assessed. To this purpose, dermal plates from modern, genetically identified museum specimens were studied and the surface morphology observed in a series of archaeological remains was compared with the genetic identifications obtained on these same remains. The analyses show that the surface pattern of dermal bones is related to the size of the individual, with the pattern of small A. oxyrinchus being similar to that of A. sturio. In addition, variations in the surface pattern among the bones of a single individual and within the same bone have been observed. These findings explain previous conflicting results between morphological and genetic identifications and allow the formulation of some recommendations for more accurate morphological identification of isolated archaeological sturgeon dermal bones.
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RBINS Staff Publications 2016
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Let the dead speak…comments on Dibble et al.'s reply to “Evidence supporting an intentional burial at La Chapelle-aux-Saints”
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In a reply to our paper presenting new evidence supporting an intentional Neanderthal burial at La Chapelle-aux-Saints (Corrèze, France), Dibble et al. (2014) reviewed our data in relation to the original Bouyssonie publications. They conclude that alternative hypotheses can account for the preservation of the human remains within a pit. Here we present new data from our recent excavations and highlight several misinterpretations of the Bouyssonie publications, which, when taken together refute most of their arguments. Moreover, we show that the different hypotheses proposed by Dibble et al. cannot work together and fail to provide a credible explanation for the deposit, reinforcing our demonstration that the burial hypothesis remains the most parsimonious explanation for the preservation of the Neanderthal skeletal material at La Chapelle-aux-Saints.
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RBINS Staff Publications 2016
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Change in Historical Range of the Ural Owl in Europe
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A carpometacarpus recovered during archaeological excavations in the town of Quaregnon is the westernmost find ever reported in Europe of a Ural Owl (Strix uralensis), and the first occurrence for Belgium. Both the morphology of the skeletal element and its measurements rule out an identification as any of the other Strigiformes from the Western Palearctic. The provenance of this specimen, that dates to the medieval period (10th-12th centuries AD), is discussed. It is hypothesized that the bird was a wild animal, but the available evidence does not unequivocally determine whether it belonged to a local, breeding population that went extinct or if it came from a more distant population. However, a survey of other zooarchaeological finds of Ural Owl in Europe shows that the species occurred farther west in the past, outside the present natural breeding range. This suggests that Ural Owl may have found suitable nesting biotopes in Belgium and northern France during the medieval period.
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RBINS Staff Publications 2016
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Scutes for sturgeon size reconstruction: traditional and geometric morphometric techniques applied to Acipenser sturio and A. oxyrinchus
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RBINS Staff Publications 2016
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Cetacean paleobiology
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RBINS Staff Publications 2016
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Description d'une nouvelle espèce de lobobunaea Packard, 1901 (Lepidoptera)
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RBINS Staff Publications 2016
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Unraveling geological and geographical provenances of querns and mills during Roman times at the northern frontier of the Roman Empire (Belgium, Northern France, Southern Netherlands, Western germany): a multidisciplinary research project.
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RBINS Staff Publications 2016
