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19 results for “"sky island" diversification”
Data from: Species diversification in the sky islands of southwestern China revealed by genomic, introgression and demographic analyses of Asian shrew moles
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Data from: Sky island diversification meets the multispecies coalescent – divergence in the spruce-fir moss spider (Microhexura montivaga, Araneae, Mygalomorphae) on the highest peaks of southern Appalachia
Microhexura montivaga is a miniature tarantula-like spider endemic to the highest peaks of the southern Appalachian mountains and is known only from six allopatric, highly disjunct montane populations. Because of severe declines in spruce-fir forest in the late 20th century, M. montivaga was formally listed as a US federally endangered species in 1995. Using DNA sequence data from one mitochondrial and seven nuclear genes, patterns of multigenic genetic divergence were assessed for six montane populations. Independent mitochondrial and nuclear discovery analyses reveal obvious genetic fragmentation both within and among montane populations, with five to seven primary genetic lineages recovered. Multispecies coalescent validation analyses [guide tree and unguided Bayesian Phylogenetics and Phylogeography (BPP), Bayes factor delimitation (BFD)] using nuclear-only data congruently recover six or seven distinct lineages; BFD analyses using combined nuclear plus mitochondrial data favour seven or eight lineages. In stark contrast to this clear genetic fragmentation, a survey of secondary sexual features for available males indicates morphological conservatism across montane populations. While it is certainly possible that morphologically cryptic speciation has occurred in this taxon, this system may alternatively represent a case where extreme population genetic structuring (but not speciation) leads to an oversplitting of lineage diversity by multispecies coalescent methods. Our results have clear conservation implications for this federally endangered taxon and illustrate a methodological issue expected to become more common as genomic-scale data sets are gathered for taxa found in naturally fragmented habitats.
Fig. 14 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 14 Overlapped environmental niche model of the predicted distribution for the M. rufus group under current, MOL, and LGM climatic conditions. Black color represents stable area. The inset in the
Fig. 11 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 11 Male genitalia of Merodon orjensis Radenković et Vujić, sp. nova. a left surstyle, ventral view; b epandrium, lateral view; c hypandrium, lateral view. al—anterior surstyle lobe, mp— median part of susrtyle, pl— posterior surstyle lobe, t—spines on medium part of surstyle, ce— cercus, s—lateral sclerite of aedeagus, th—thorn on thecal ridge
Fig. 9 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 9 Species tree chronogram of the M. rufus group obtained in BEAST. Mean node ages were estimated using a Strict clock model and Calibrated Yule model of speciation. The numbers represent divergence time in million years ago (Mya)
Fig. 10 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 10 Male genitalia of Merodon kozufensis Radenković et Vujić, sp. nova. a left surstyle, ventral view; b epandrium, lateral view; c hypandrium, lateral view. al—anterior surstyle lobe, mp— median part of surstyle, pl— posterior surstyle lobe, t—spines on medium part of surstyle, ce— cercus, s—lateral sclerite of aedeagus, th—thorn on thecal ridge
Fig. 8 Maximum parsimony strict-consensus tree for the concatenated 3 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 8 Maximum parsimony strict-consensus tree for the concatenated 3′-end and 5′-end mtCOI and 28S rRNA genes. Filled circles denote unique changes and open circles non-unique changes. 72 trees, length = 1935 steps, CI = 34, RI = 64
Fig. 5 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 5 Metaleg in female. a Merodon rufus Meigen, 1838; b M. kozufensis Radenković et Vujić, sp. nova; c M. olympius Vujić et Radenković, sp. nova
Fig. 2 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 2 Head of Merodon olympius Vujić et Radenković, sp. nova. a, c male; b, d female; a, b lateral view; c, d anterior view. o—oral margin
Fig. 12 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 12 Topographic map with known occurrences of the M. rufus group in Europe (black and white areas represent lower and higher elevation, respectively)
Data from: Niche divergence promotes rapid diversification of East African sky island white-eyes (Aves: Zosteropidae)
The Eastern Afromontane biodiversity hotspot composed of highly fragmented forested highlands (sky islands) harbours exceptional diversity and endemicity, particularly within birds. To explain their elevated diversity within this region, models founded on niche conservatism have been offered, although detailed phylogeographic studies are limited to a few avian lineages. Here we focus on the recent songbird genus Zosterops, represented by montane and lowland members, to test the roles of niche conservatism versus niche divergence in the diversification and colonization of East Africa's sky islands. The species-rich white-eyes are a typically homogeneous family with an exceptional colonizing ability, but in contrast to their diversity on oceanic islands, continental diversity is considered depauperate and has been largely neglected. Molecular phylogenetic analysis reveals extensive polyphyly among different montane populations of Z. poliogastrus with these larger and heavier endemic populations more closely related to taxa with divergent habitat types, altitudinal distributions and dispersal abilities than they are to populations of restricted endemics that occur in neighbouring montane forest fragments. This repeated transition between lowland and highland habitats over time demonstrate that diversification of the focal group is explained by niche divergence. The results also highlight an underestimation of diversity compared to morphological studies that has implications for their taxonomy and conservation. Molecular dating suggests that the spatially extensive African radiation arose exceptionally rapidly (1-2.5 Ma) during the fluctuating Plio-Pleistocene climate, which may have provided the primary driver for lineage diversification.
Data from: Sky island diversification meets the multispecies coalescent – divergence in the spruce-fir moss spider (Microhexura montivaga, Araneae, Mygalomorphae) on the highest peaks of southern Appalachia
Open the record for dataset details and reuse information.
Data from: Niche divergence promotes rapid diversification of East African sky island white-eyes (Aves: Zosteropidae)
Open the record for dataset details and reuse information.
Fig. 6 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 6 Abdomen of Merodon rufus Meigen 1838. a male; b female
Fig. 4 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 4 Metatrochanter in male. a Merodon rufus Meigen, 1838; b M. kozufensis Radenković et Vujić, sp. nova; c M. olympius Vujić et Radenković, sp. nova; d M. orjensis Radenković et Vujić, sp. nova. p—thorn on metatrochanter
Fig. 13 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 13 Predicted potential geographic distribution of the M. rufus group in Europe under the following scenarios: a current; b MOL-CCSM4; c MOL- MPIESM-P; d LGM-CCSM4; and e LGM-MPIESM-P
Fig. 7 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 7 Male genitalia of Merodon rufus Meigen, 1838. a left surstyle, ventral view; b epandrium, lateral view; c hypandrium, lateral view. al— anterior surstyle lobe, mp— median part of surstyle, pl— posterior surstyle lobe, t—spines on medium part of surstyle, ce— cercus, s—lateral sclerite of aedeagus, th—thorn on thecal ridge
Fig. 1 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 1 Head of Merodon rufus Meigen, 1838. a, c male; b, d female; a, b lateral view; c, d anterior view. o—oral margin
Fig. 3 in Sky island diversification in the Merodon rufus group (Diptera, Syrphidae)-recent vicariance in south-east Europe
Fig. 3 Metaleg in male. a Merodon rufus Meigen, 1838; b M. kozufensis Radenković et Vujić, sp. nova; c M. olympius Vujić et Radenković, sp. nova; d M. orjensis Radenković et Vujić, sp. nova. p—thorn on metatrochanter
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.