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139 results for “island radiation”
Data from: Contrasting trajectories of morphological diversification on continents and islands in the Afrotropical white-eye radiation
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FIG. 23 in Fourteen New, Endemic Species Of Shrew (Genus Crocidura) From Sulawesi Reveal A Spectacular Island Radiation
FIG. 23. Box plots summarizing head-and-body length, condyloincisive length, and braincase breadth measurements for members of the Rhoditis Group. Data from Crocidura rhoditis and C. pseudorhoditis are divided into two boxes. Dark gray boxes show all available measurements from across the species range while light gray boxes show only samples taken on Mt. Ambang, where the two species occur in syntopy. Note that the differences between these two species are greater on Mt. Ambang than they are for the islandwide sample. Plots show the median, 1st and 3rd quartiles, the maximum value within 1.5 × interquartile range (distance between 1st and 3rd quartiles; IQR), the minimum value within 1.5 × IQR, and outliers (black circles). Sample sizes are shown along the x-axis. All measurements in mm.
FIG. 34 in Fourteen New, Endemic Species Of Shrew (Genus Crocidura) From Sulawesi Reveal A Spectacular Island Radiation
FIG. 34. Images showing dorsal, ventral, and lateral views of the skull and lateral and occlusal views of the dentary of the two members of the Thick-Tailed Group: A, Crocidura brevicauda, MVZ 237632; and B, C. caudicrassa, MZB 34795.
FIG. 28 in Fourteen New, Endemic Species Of Shrew (Genus Crocidura) From Sulawesi Reveal A Spectacular Island Radiation
FIG. 28. Images showing dorsal, ventral, and lateral views of the skull and lateral and occlusal views of the dentary from the three members of the Small-Bodied Group that are from the northern peninsula: A, Crocidura baletei, LSUMZ 36959; B, C. lea, LSUMZ 38262; and C, C. tenebrosa, LSUMZ 39272.
FIG. 33 in Fourteen New, Endemic Species Of Shrew (Genus Crocidura) From Sulawesi Reveal A Spectacular Island Radiation
FIG. 33. Images showing the ventral surface of the hind foot and dorsal surfaces of the tail base (approximately 1 cm from rump) and tail tip from the two members of the Thick-Tailed Group: A, Crocidura brevicauda, MVZ 237632 (left hind foot); and B, C. caudicrassa, MZB 34795 (right hind foot). In B the upper scale bar applies to the foot and the lower to the tail.
FIG. 13 in Fourteen New, Endemic Species Of Shrew (Genus Crocidura) From Sulawesi Reveal A Spectacular Island Radiation
FIG. 13. Elevational records of all species of Crocidura known from Sulawesi. Each point represents a specimen. For specimens associated with a minimum and maximum elevation, we used the center of the given elevational range. Sample sizes are given above the x-axis. Species are grouped according to the species groups used in the text (Thick = Thick-Tailed Group).
Ecological opportunity from innnovation, not islands, drove the Anole lizard adaptive radiation
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Data from: Island- and lake-like parallel adaptive radiations replicated in rivers
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Data from: Adaptive introgression from distant Caribbean islands contributed to the diversification of a microendemic adaptive radiation of trophic specialist pupfishes
Rapid diversification often involves complex histories of gene flow that leave variable and conflicting signatures of evolutionary relatedness across the genome. Identifying the extent and source of variation in these evolutionary relationships can provide insight into the evolutionary mechanisms involved in rapid radiations. Here we compare the discordant evolutionary relationships associated with species phenotypes across 42 whole genomes from a sympatric adaptive radiation of Cyprinodon pupfishes endemic to San Salvador Island, Bahamas and several outgroup pupfish species in order to understand the rarity of these trophic specialists within the larger radiation of Cyprinodon. 82% of the genome depicts close evolutionary relationships among the San Salvador Island species reflecting their geographic proximity, but the vast majority of variants fixed between specialist species lie in regions with discordant topologies. Top candidate adaptive introgression regions include signatures of selective sweeps and adaptive introgression of genetic variation from a single population in the northwestern Bahamas into each of the specialist species. Hard selective sweeps of genetic variation on San Salvador Island contributed 5 times more to speciation of trophic specialists than adaptive introgression of Caribbean genetic variation; however, four of the 11 introgressed regions came from a single distant island and were associated with the primary axis of oral jaw divergence within the radiation. For example, standing variation in a proto-oncogene (ski) known to have effects on jaw size introgressed into one San Salvador Island specialist from an island 300 km away approximately 10 kya. The complex emerging picture of the origins of adaptive radiation on San Salvador Island indicates that multiple sources of genetic variation contributed to the adaptive phenotypes of novel trophic specialists on the island. Our findings suggest that a suite of factors, including rare adaptive introgression, may be necessary for adaptive radiation in addition to ecological opportunity.
Figs. 65–68. 65, 66 in A Review of the Ground Spider Genus Scotognapha (Araneae, Gnaphosidae), and its Radiation on the Canary and Salvage Islands
Figs. 65–68. 65, 66. Scotognapha paivai (Blackwall). 67, 68. Scotognapha costacalma, new species.
Data from: Adaptive introgression from distant Caribbean islands contributed to the diversification of a microendemic adaptive radiation of trophic specialist pupfishes
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Figure 17 in Dissecting an island radiation: systematic revision of endemic land snails on Lord Howe Island (Gastropoda: Stylommatophora: Microcystidae)
Figure 17. Reproductive system of Innesoconcha doppelganger sp. nov. A, AM C.598519, Ned's Beach, reproductive system. B, C, AM C.553170, Steven's Reserve. B, penis with tunica opened. C, penis interior. Scale bars: 1 mm.
Figure 4 in Dissecting an island radiation: systematic revision of endemic land snails on Lord Howe Island (Gastropoda: Stylommatophora: Microcystidae)
Figure 4. Comparison of intra- and interspecific genetic p-distances for the two mitochondrial fragments analysed. A, frequency distributions of distances in COI. B, frequency distributions of distances in 16S.
Figure 5 in Dissecting an island radiation: systematic revision of endemic land snails on Lord Howe Island (Gastropoda: Stylommatophora: Microcystidae)
Figure 5. Shells of Innesoconcha. A, B, Innesoconcha catletti. A, AM C.101187 (syntype). B, AM C.101188 (syntype of I. catletti major). C, Innesoconcha aberrans, AM C.63475 (holotype). D, Innesoconcha delecta, AM C.63478 (holotype). E, Innesoconcha doppelganger sp. nov., AM C.592779 (holotype). F, Innesoconcha flaƲescens, AM C.40600 (syntype). G, Innesoconcha grata, AM C.63479 (lectotype). H, Innesoconcha miranda, AM C.39175 (holotype). I, Innesoconcha prensa, AM C.63476 (holotype). J, Innesoconcha princeps, AM C.38958 (syntype). K, L, Innesoconcha rosacea. K, AM C.38940 (holotype). L, AM C.63477 (holotype of Melloconcha alma). M, Innesoconcha segna, AM C.114789 (possible holotype).
Figure 23 in Dissecting an island radiation: systematic revision of endemic land snails on Lord Howe Island (Gastropoda: Stylommatophora: Microcystidae)
Figure 23. Reproductive system of Innesoconcha prensa. A, AM C.583110, Mount Gower summit, reproductive system. B, C, AM C.583111, Mount Gower summit, penis with tunica opened. C, penis interior. Scale bars: 1 mm.
Figure 3 in Dissecting an island radiation: systematic revision of endemic land snails on Lord Howe Island (Gastropoda: Stylommatophora: Microcystidae)
Figure 3. Best maximum likelihood tree based on analysis of the concatenated dataset of fragments of the mitochondrial genes 16S and COI using IQ-TREE. Ambiguous alignment sites in 16S were removed using MAFFT. Numbers on branches indicate nodal support based on 10 000 ultra-fast bootstrap repeats. Scale bar indicates 10% of modelled sequence divergence. Individual samples are named according to their initial identification. Pale green bars indicate a collection elevation of 300–600 m, dark green bars a collection elevation of> 600 m and no bars a collection elevation <300 m.
FIGURE 12 in The family Hydroptilidae Curtis (Trichoptera) in the Ogasawara Islands, northwestern Pacific, with particular reference to adaptive radiation in the oceanic islands
FIGURE 12. Habitats of type localities, adult and immature stages of Hydroptila hahajima sp. nov. and H. nagahama sp. nov. H. hahajima (12A, 12B): 12A, habitat; 12B, larva in case in alcohol, left lateral. H. nagahama (12C–12H): 12C, 12D, habitat; 12E, adult on light trap sheet; 12F, three pupae in crack on rock surface; 12G, larva in case in field; 12H, larva in case in alcohol. Scale bars, 1 mm.
FIGURE 1 in The family Hydroptilidae Curtis (Trichoptera) in the Ogasawara Islands, northwestern Pacific, with particular reference to adaptive radiation in the oceanic islands
FIGURE 1. Location of the Ogasawara (Bonin) Islands in the northwestern Pacific (1A) and collecting sites of the six species of Hydroptila on Ani-jima (1B), Chichi-jima (1C), and Haha-jima (1D).
FIGURE 4 in The family Hydroptilidae Curtis (Trichoptera) in the Ogasawara Islands, northwestern Pacific, with particular reference to adaptive radiation in the oceanic islands
FIGURE 4. Larva of Hydroptila demersa sp. nov. 4A, habitus, right lateral; 4B, head, thorax and abdominal segments I–II, dorsal; 4C, head, ventral; 4D, left antenna, left lateral; 4E, right foretrochantin and foreleg, right lateral, with enlarged figure of a spine of the tibial spur; 4F, abdominal segments IX–X, right lateral; 4G, anal claw, right lateral (paired). 8, 9 = primary setae 8 and 9 (Wiggins 1996).
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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