Search Results - "ARNTZEN, J. W."

Two transects reveal remarkable variation in gene flow on opposite ends of a European toad hybrid zone by van Riemsdijk, I, Arntzen, J W, Bucciarelli, G M, McCartney-Melstad, E, Rafajlović, M, Scott, P A, Toffelmier, E, Shaffer, H B, Wielstra, B

“…Speciation entails a reduction in gene flow between lineages. The rates at which genomic regions become isolated varies across space and time. Barrier markers…”
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Identifying future research needs in landscape genetics: where to from here? by Balkenhol, Niko, Gugerli, Felix, Cushman, Sam A, Waits, Lisette P, Coulon, Aurélie, Arntzen, J. W, Holderegger, Rolf, Wagner, Helene H

“…Landscape genetics is an emerging interdisciplinary field that combines methods and concepts from population genetics, landscape ecology, and spatial…”
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Phylogeography of two European newt species - discordance between mtDNA and morphology by BABIK, W., BRANICKI, W., CRNOBRNJA-ISAILOVIĆ, J., COGĂLNICEANU, D., SAS, I., OLGUN, K., POYARKOV, N. A., GARCIA-PARÍS, M., ARNTZEN, J. W.

“…The newts Triturus vulgaris and Triturus montandoni are sister species that exhibit contrasting levels of intraspecific morphological variation. Triturus…”
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Crest evolution in newts: implications for reconstruction methods, sexual selection, phenotypic plasticity and the origin of novelties by WIENS, J. J., SPARREBOOM, M., ARNTZEN, J. W.

“…The dorsal crest of newts (Salamandridae) is a novel, phenotypically plastic, sexually selected trait that may evolve in association with complex courtship…”
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Is dispersal guided by the environment? A comparison of interspecific gene flow estimates among differentiated regions of a newt hybrid zone by Espregueira Themudo, G., Nieman, A. M., Arntzen, J. W.

“…How frequently genes pass through a hybrid zone may be influenced by the environment. Accordingly, in long hybrid zones that span more than one environmental…”
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Environmental parameters that determine species geographical range limits as a matter of time and space by Arntzen, J.W, Espregueira Themudo, G

“…To identify the ecological factors associated with the range borders of two amphibian species, to investigate geographical variation in environmental…”
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Contemporary gene flow and the spatio‐temporal genetic structure of subdivided newt populations (Triturus cristatus, T. marmoratus) by JEHLE, R., WILSON, G. A., ARNTZEN, J. W., BURKE, T.

“…Gene flow and drift shape the distribution of neutral genetic diversity in metapopulations, but their local rates are difficult to quantify. To identify gene…”
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Long-term survival of a urodele amphibian despite depleted major histocompatibility complex variation by BABIK, W., PABIJAN, M., ARNTZEN, J.W., COGALNICEANU, D., DURKA, W., RADWAN, J.

“…Depletion of polymorphism at major histocompatibility complex (MHC) genes has been hypothesized to limit the ability of populations to respond to emerging…”
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Fluctuating asymmetry is a function of population isolation in island lizards by Băncilǎ, Raluca, Van Gelder, Iris, Rotteveel, Erik, Loman, Juke, Arntzen, J. W.

“…We measured the level of fluctuating asymmetry (FA) in head shape, head scalation and femoral pores in two lizard species (Podarcis bocagei and Podarcis…”
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Newts under siege: range expansion of Triturus pygmaeus isolates populations of its sister species by Themudo, G. Espregueira, Arntzen, J. W.

“…The newt species Triturus marmoratus and Triturus pygmaeus are both present in central Portugal where they have parapatric distributions. We used four genetic…”
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Genetic subdivision, glacial refugia and postglacial recolonization in the golden-striped salamander, Chioglossa lusitanica (Amphibia: Urodela) by Alexandrino, J., Froufe, E., Arntzen, J. W., Ferrand, N.

“…The golden‐striped salamander (Chioglossa lusitanica) is an ecologically specialized species, endemic to north‐western Iberia. Patterns of genetic variation…”
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Extending the natural range of a declining species: genetic evidence for native great crested newt (Triturus cristatus) populations in the Scottish Highlands by O’Brien, C. D, Hall, J. E, Orchard, D, Barratt, C. D, Arntzen, J. W, Jehle, R

“…Determining whether isolated populations of a species are native or introduced is important for conservation, as non-native occurrences are likely to be of…”
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A signature of dynamic biogeography: enclaves indicate past species replacement by Wielstra, B., Burke, T., Butlin, R. K., Arntzen, J. W.

“…Understanding how species have replaced each other in the past is important to predicting future species turnover. While past species replacement is difficult…”
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Phylogenomics of the adaptive radiation of Triturus newts supports gradual ecological niche expansion towards an incrementally aquatic lifestyle by Wielstra, B., McCartney-Melstad, E., Arntzen, J.W., Butlin, R.K., Shaffer, H.B.

“…[Display omitted] •Triturus newts show a correlation between body build and aquatic lifestyle.•The phylogeny of this adaptive radiation is currently…”
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Phylogenetic relationships and biogeography of midwife toads (Discoglossidae: Alytes) by Martínez-Solano, I., Gonçalves, H. A., Arntzen, J. W., García-París, M.

“…Aim To devise a robust phylogenetic hypothesis for midwife toads (Alytes: Anura: Discoglossidae) and to discuss its implications for the reconstruction of the…”
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From descriptive to predictive distribution models: a working example with Iberian amphibians and reptiles by Arntzen, J W

“…Aim of the study was to identify the conditions under which spatial-environmental models can be used for the improved understanding of species distributions,…”
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Hybridization and speciation by Abbott, R., Albach, D., Ansell, S., Arntzen, J. W., Baird, S. J. E., Bierne, N., Boughman, J., Brelsford, A., Buerkle, C. A., Buggs, R., Butlin, R. K., Dieckmann, U., Eroukhmanoff, F., Grill, A., Cahan, S. H., Hermansen, J. S., Hewitt, G., Hudson, A. G., Jiggins, C., Jones, J., Keller, B., Marczewski, T., Mallet, J., Martinez‐Rodriguez, P., Möst, M., Mullen, S., Nichols, R., Nolte, A. W., Parisod, C., Pfennig, K., Rice, A. M., Ritchie, M. G., Seifert, B., Smadja, C. M., Stelkens, R., Szymura, J. M., Väinölä, R., Wolf, J. B. W., Zinner, D.

“…Hybridization has many and varied impacts on the process of speciation. Hybridization may slow or reverse differentiation by allowing gene flow and…”
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Genetic exchange across a hybrid zone within the Iberian endemic golden-striped salamander, Chioglossa lusitanica by SEQUEIRA, F., ALEXANDRINO, J., ROCHA, S., ARNTZEN, J. W., FERRAND, N.

“…The study of hybrid zones resulting from Pleistocene vicariance is central in examining the potential of genetically diverged evolutionary units either to…”
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Description of a new species of crested newt, previously subsumed in Triturus ivanbureschi (Amphibia: Caudata: Salamandridae) by Wielstra, B, Arntzen, J W

“…Multilocus molecular data play a pivotal role in diagnosing cryptic species (i.e. genetically distinct but morphologically similar species). A multilocus…”
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Biogeography of the Golden-Striped Salamander Chioglossa lusitanica: A Field Survey and Spatial Modelling Approach by Teixeira, J., Ferrand, N., Arntzen, J. W.

“…Chioglossa lusitanica is a streamside salamander endemic to the northwestern corner of the Iberian Peninsula. In an extensive field survey we found the species…”
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