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10 results for “Hybrid Museum”
Museum genomics reveals the hybrid origin of an extinct crater lake endemic
<p>Crater lake fishes are common evolutionary model systems, with recent studies suggesting a key role for gene flow in promoting rapid adaptation and speciation. However, the study of these young lakes can be complicated by human-mediated extinctions. Museum genomics approaches integrating genetic data from recently extinct species are therefore critical to understanding the complex evolutionary histories of these fragile systems. Here, we examine the evolutionary history of an extinct Southern Hemisphere crater lake endemic, the rainbowfish Melanotaenia eachamensis. We undertook comprehensive sampling of extant rainbowfish populations of the Atherton Tablelands of Australia alongside historical museum material to understand the evolutionary origins of the extinct crater lake population and the dynamics of gene flow across the ecoregion. The extinct crater lake species is genetically distinct from all other nearby populations due to historic introgression between two proximate riverine lineages, similar to other prominent crater lake speciation systems, but this historic gene flow has not been sufficient to induce a species flock. Our results suggest that museum genomics approaches can be successfully combined with extant sampling to unravel complex speciation dynamics involving recently extinct species.</p>
Museum genomics reveals the hybrid origin of an extinct crater lake endemic
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Data from: Climate-mediated hybrid zone movement revealed with genomics, museum collection and simulation modeling
Climate-mediated changes in hybridization will dramatically alter the genetic diversity, adaptive capacity and evolutionary trajectory of interbreeding species. Our ability to predict the consequences of such changes will be key to future conservation and management decisions. Here we tested through simulations how recent warming (over a 32-year period) is affecting the geographic extent of a climate-mediated developmental threshold implicated in maintaining a butterfly hybrid zone (Papilio glaucus and Papilio canadensis; Lepidoptera: Papilionidae). These simulations predict a 68 km shift of this hybrid zone. To empirically test this prediction, we assessed genetic and phenotypic changes using contemporary and museum collections and document a 40 km northward shift of this hybrid zone. Interactions between the two species appear relatively unchanged during hybrid zone movement. We found no change in the frequency of hybridization and regions of the genome that experience little to no introgression moved largely in concert with the shifting hybrid zone. Model predictions based on climate scenarios predict this hybrid zone will continue to move northward, but with substantial spatial heterogeneity in the velocity (55-144 km/1°C), shape, and contiguity of movement. Our findings suggest that the presence of non-climatic barriers (e.g., genetic incompatibilities) and/or non-linear responses to climatic gradients may preserve species boundaries as the species shift. Further, we show that variation in the "geography" of hybrid zone movement could result in evolutionary responses that differ for geographically distinct populations spanning hybrid zones and thus have implications for the conservation and management of genetic diversity.
Data from: Climate-mediated hybrid zone movement revealed with genomics, museum collection and simulation modeling
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Data from: Evaluating hybridization capture with RAD probes as a tool for museum genomics with historical bird specimens
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Figure 4 from: Koch A (2018) Discovery of a rare hybrid specimen known as Maria's bird of paradise at the Staatliches Naturhistorisches Museum in Braunschweig. Zoosystematics and Evolution 94(2): 315-324. https://doi.org/10.3897/zse.94.25139
Figure 4 The male specimen SNMB N49068 of P. maria in the Staatliches Naturhistorisches Museum in Braunschweig. The information written on the underside of the pedestal in black ink is as follows: "Paradisea maria R[ei]ch[eno]w. Neu-Guinea [= New Guinea] Köper Docke u. Co. Bremen C. N. 3423. Weber [?] det. [?]". The white label written with pencil, which partly sticks above the former ink writing, reads as follows: "Real. Kat. 13143 Paradisea maria Rchw. ♂ Deutsch-N.-G. Eing. N° 3423" (= Realia Catalogue No. 13143, Paradisea maria Reichenow, ♂, German New Guinea, Entrance No. 3423). Photos by M. Forthuber.
Figure 5 from: Koch A (2018) Discovery of a rare hybrid specimen known as Maria's bird of paradise at the Staatliches Naturhistorisches Museum in Braunschweig. Zoosystematics and Evolution 94(2): 315-324. https://doi.org/10.3897/zse.94.25139
Figure 5 Catalogue page from the Überseemuseum in Bremen with the entries of two specimens of P. maria (catalogue numbers 13143 and 13144), the former of which was, probably among others, exchanged with Walter Behrens on 22 June 1954 and which is now SNMB N49068 at the Braunschweig collection. Both male specimens were transported to Bremen by the trading company Köper, Docke u. Co. in 1917. Photo by M. Stiller.
Figure 2 from: Koch A (2018) Discovery of a rare hybrid specimen known as Maria's bird of paradise at the Staatliches Naturhistorisches Museum in Braunschweig. Zoosystematics and Evolution 94(2): 315-324. https://doi.org/10.3897/zse.94.25139
Figure 2 Plates of Paradisaea guilielmi (A) and P. raggiana augustaevictoriae (B), the presumed parental species of P. maria, related to the original descriptions by Cabanis (1888). Reproduced from the Biodiversity heritage library (http://biodiversitylibrary.com/).
Figure 3 from: Koch A (2018) Discovery of a rare hybrid specimen known as Maria's bird of paradise at the Staatliches Naturhistorisches Museum in Braunschweig. Zoosystematics and Evolution 94(2): 315-324. https://doi.org/10.3897/zse.94.25139
Figure 3 The holotype (ZMB 31049) of Paradisaea maria Reichenow, 1894, in dorsal, lateral, and ventral view. Photos by H. J. Goetz (Museum für Naturkunde, Berlin).
Figure 1 from: Koch A (2018) Discovery of a rare hybrid specimen known as Maria's bird of paradise at the Staatliches Naturhistorisches Museum in Braunschweig. Zoosystematics and Evolution 94(2): 315-324. https://doi.org/10.3897/zse.94.25139
Figure 1 Plate of the male hybrid bird of paradise Paradisaea maria from Reichenow (1897). Reproduced from the Biodiversity heritage library (http://biodiversitylibrary.com/).
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