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Inproceedings Reference Etude immunologique du collagène dans les ossements brûlés
Located in Library / RBINS Staff Publications
Inproceedings Reference Etude des propriétés antigéniques du collagène de Type I
Located in Library / RBINS Staff Publications
Inproceedings Reference Population genetic differentiation in Melarhaphe neritoides, a marine gastropod with a long-lived planktonic larval stage.
Marine invertebrates with planktonic-dispersing larvae are assumed to be good dispersers over long distances. This high dispersal capacity implies a high gene flow between populations and a homogeneous population genetic structuring over wide geographic scales. The marine gastropod Melarhaphe neritoides has a long-lived planktonic larval dispersal stage and allozyme data suggest that it is genetically homogeneous over its whole European distribution area. In contrast, preliminary mtDNA sequence data uncovered a remarkable degree of genetic diversity and genetic structuring on smaller geographic scales. In order to explore this mtDNA diversity and structuring in M. neritoides we started to survey sequence variation at COI and 16S rDNA all over the Azores archipelago. These data reveal that the Azorean populations share very few haplotypes, both between and within islands. Hence, it seems that M. neritoides with its long-lived planktonic larval stage nevertheless shows a strong local population genetic structuring and thus challenges the current paradigm that correlates modes of larval development with levels of genetic structuring. It also stresses the importance of the sampling intensity (both in terms of numbers of specimens and genetic markers) to avoid experimental biases when assessing genetic diversity.
Located in Library / RBINS Staff Publications
Inproceedings Reference Rapid divergence in morphology, physiology and behaviour among island populations of lizards.
Located in Library / RBINS Staff Publications
Inproceedings Reference Canine mitochondrial genome sequencing to improve the genetic profiling of dog hair.
Located in Library / RBINS Staff Publications
Inproceedings Reference There’s more than meets the eye: population structure in the Ceratitis “FAR complex”.
Analyses of mitochondrial and nuclear DNA sequences hitherto failed to resolve the three morphospecies of the so-called Ceratitis “FAR complex” (C. fasciventris, C. anonae, C. rosa). Therefore, we developed a set of microsatellite markers for a first population genetic survey of this species complex. Specimens of C. fasciventris, C. anonae, and C. rosa (27 populations, n=621) collected across their respective distribution ranges were genotyped at 16 polymorphic microsats. Genetic distance analyses distinguished at least five bootstrap supported population groups, each including samples from one of the three morphospecies. The Bayesian assignments implemented in STRUCTURE show that (1) C. rosa is represented by at least two clusters of individuals (R1, R2) that can occur in sympatry/parapatry, but that may have different developmental thresholds, (2) C. fasciventris is represented by at least two, geographically separated, clusters (F1, F2), and (3) C. anonae is genetically more homogeneous and doesn’t show a clear intraspecific structuring (cluster A). The differentiation of the C. rosa and C. fasciventris clusters is supported by morphological differences in the male secondary sexual characters. Genetic divergences between the C. rosa clusters and between the C. fasciventris clusters are comparable to the interspecific divergences among C. fasciventris, C. anonae, and C. rosa. Higher genetic distances were observed between the morphologically similar C. rosa and C. fasciventris, while C. anonae appears as closely related to both F1 and R2. The microsats used in this study thus unmasked a complex, and partly cryptic, population genetic structure within the FAR morphospecies. Keywords: Tephritidae, population genetics, microsats
Located in Library / RBINS Staff Publications
Inproceedings Reference The meiofauna paradox unresolved: Cryptic speciation in Gyratrix hermaphroditus (Kalyptorhynchia, Platyhelminthes).
Located in Library / RBINS Staff Publications
Inproceedings Reference Complex biogeography of cryptic species in the Gyratrix hermaphroditus species complex.
Located in Library / RBINS Staff Publications
Inproceedings Reference Contemporary population genetic differentiation in Melarhaphe neritoides (Gastropoda: Littorinidae), a long-lived planktonic-dispersing mollusc.
Marine invertebrates with planktonic-dispersing larvae are assumed to be good dispersers over long distances. This high dispersal capacity implies a high gene flow between populations and a homogeneous population genetic structuring over wide geographic scales.The marine gastropod Melarhaphe neritoides has a long-lived planktonic larval dispersal stage and allozyme data suggest that it is genetically homogeneous over its whole European distribution area. In contrast, preliminary mtDNA sequence data uncovered a remarkable degree of genetic diversity and genetic structuring on smaller geographic scales.In order to explore this mtDNA diversity and structuring in M. neritoides we started to survey sequence variation at COI and 16S rDNA all over the Azores archipelago. These data reveal that the Azorean populations share very few haplotypes.Hence, it seems that M. neritoides with its long-lived planktonic larval stage nevertheless shows a strong local population genetic structuring and thus challenges the current paradigm that correlates modes of larval development with levels of genetic structuring. It also stresses the importance of the sampling intensity (both in terms of numbers of specimens and genetic markers) to avoid experimental biases when assessing genetic diversity
Located in Library / RBINS Staff Publications
Inproceedings Reference Geotouristic initiatives in the province of Limburg: information stimulates awareness of geological heritage
Located in Library / RBINS Staff Publications