共查询到20条相似文献，搜索用时 15 毫秒
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Thomas J. Givnish Daniel Spalink Mercedes Ames Stephanie P. Lyon Steven J. Hunter Alejandro Zuluaga Alfonso Doucette Giovanny Giraldo Caro James McDaniel Mark A. Clements Mary T. K. Arroyo Lorena Endara Ricardo Kriebel Norris H. Williams Kenneth M. Cameron 《Journal of Biogeography》2016,43(10):1905-1916
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Joseph B. Pfaller Adam C. Payton Karen A. Bjorndal Alan B. Bolten Stuart F. McDaniel 《Ecology and evolution》2019,9(3):957-974
Population differentiation and diversification depend in large part on the ability and propensity of organisms to successfully disperse. However, our understanding of these processes in organisms with high dispersal ability is biased by the limited genetic resolution offered by traditional genotypic markers. Many neustonic animals disperse not only as pelagic larvae, but also as juveniles and adults while drifting or rafting at the surface of the open ocean. In theory, the heightened dispersal ability of these animals should limit opportunities for species diversification and population differentiation. To test these predictions, we used next‐generation sequencing of genomewide restriction‐site‐associated DNA tags (RADseq) and traditional mitochondrial DNA sequencing, to investigate the species‐level relationships and global population structure of Planes crabs collected from oceanic flotsam and sea turtles. Our results indicate that species diversity in this clade is low—likely three closely related species—with no evidence of cryptic or undescribed species. Moreover, our results indicate weak population differentiation among widely separated aggregations with genetic indices showing only subtle genetic discontinuities across all oceans of the world (RADseq FST = 0.08–0.16). The results of this study provide unprecedented resolution of the systematics and global biogeography of this group and contribute valuable information to our understanding of how theoretical dispersal potential relates to actual population differentiation and diversification among marine organisms. Moreover, these results demonstrate the limitations of single gene analyses and the value of genomic‐level resolution for estimating contemporary population structure in organisms with large, highly connected populations. 相似文献
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Ling Feng Daniela M. Takiya Sindhu M. Krishnankutty Christopher H. Dietrich Yalin Zhang 《Systematic Entomology》2024,49(2):314-329
Sharpshooters (Cicadellinae), a large subfamily of the Cicadellidae, exhibit a global distribution and a broad array of ecological preferences. To explore the phylogenetic relationships and roles of global historical, biotic and biogeographic processes in the diversification of sharpshooters, we analysed DNA sequence data from three mitochondrial and two nuclear genes for 243 taxa representing all Cicadellinae tribes, generic groups, regional faunas and data of geographic distributions of sharpshooter species compiled from online databases and available literature. The maximum likelihood (ML) and Bayesian inference (BI) analyses strongly support the monophyletic clade including Cicadellinae and Phereurininae. Divergence time estimates and biogeographic analyses suggest that sharpshooters originated in the Neotropical region or were more widespread in Gondwana during the Early Cretaceous and diversified through a combination of ancient vicariance and dispersal following the evolution of angiosperm-dominated habitats. The earliest divergence during the Cretaceous gave rise to Oriental and New World lineages, the latter of which subsequently dispersed into the Old World and gave rise to the diverse endemic fauna of Madagascar. The Oriental lineage shows high diversity and endemism in tropical Asia and the Pacific, with striking distributional discontinuities in Wallacea. These results suggest that a combination of environmental and evolutionary factors including continental-scale vicariance, long-distance dispersal and diversification of terrestrial microhabitats and host plants may explain the diversity of the modern sharpshooter fauna. 相似文献
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Matthew R. Graham Brent E. Hendrixson Chris A. Hamilton Jason E. Bond 《Journal of Biogeography》2015,42(6):1052-1065
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Brian R. Lavin Guinevere O. U. Wogan Jimmy A. McGuire Chris R. Feldman 《Zoologica scripta》2018,47(4):462-476
Western North America includes the California Floristic Province and the Pacific Northwest, biologically diverse regions highlighted by a complex topography, geology, climate and history. A number of animals span these regions and show distinctive patterns of dispersal, vicariance and lineage diversification. Examining phylogeographic patterns in the fauna of this area aids in our understanding of the forces that have contributed to the generation and maintenance of regional biodiversity. Here, we investigate the biogeography and population structure of the Northern Alligator Lizard (Elgaria coerulea), a wide‐ranging anguid endemic to western North America. We sequenced two mtDNA fragments (ND2 and ND4) for 181 individuals across the range of the species and analysed these data with phylogenetic approaches to infer population and biogeographic history, and date major divergences within the taxon. We further used Bayesian clustering methods to assess major patterns of population structure and performed ecological niche modelling (ENM) to aid in our interpretation of geographic structure and diversification of E. coerulea lineages. Our phylogeographic examination of E. coerulea uncovered surprising diversity and structure, recovering 10 major lineages, each with substantial geographic substructure. While some divergences within the species are relatively old (Pliocene, 5.3–2.6 mya), most intraspecific variation appears to be of more recent origin (Pleistocene, 2.6 mya‐11,700 ya). Current diversity appears to have arisen in the Sierra Nevada Mountains and spread west and north since the Pliocene. Finally, our ENMs suggest that much of the Coast Ranges in California provided ideal habitat during the Last Glacial Maxima (LGM) that has since contracted dramatically and shifted northwards, whereas significant portions of the Sierra Nevada were unsuitable during the LGM and have since become more suitable. Interestingly, E. coerulea shares a number of genetic boundaries with other sympatric taxa, suggesting common historical events and geomorphological features have shaped the biota of this region. 相似文献
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Jérôme Fuchs Dawie H. De Swardt Graeme Oatley Jon Fjeldså Rauri C. K. Bowie 《Zoologica scripta》2018,47(3):266-284
Species complexes of widespread African vertebrates that include taxa distributed across different habitats are poorly understood in terms of their phylogenetic relationships, levels of genetic differentiation and diversification dynamics. The Fork‐tailed Drongo (Dicrurus adsimilis) species complex includes seven Afrotropical taxa with parapatric distributions, each inhabiting a particular bioregion. Various taxonomic hypotheses concerning the species limits of the Fork‐tailed Drongo have been suggested, based largely on mantle and upperpart coloration, but our understanding of diversity and diversification patterns remains incomplete. Especially given our lack of knowledge about how well these characters reflect taxonomy in a morphologically conservative group. Using a thorough sampling across Afrotropical bioregions, we suggest that the number of recognized species within the D. adsimilis superspecies complex has likely been underestimated and that mantle and upperpart coloration reflects local adaptation to different habitat structure, rather than phylogenetic relationships. Our results are consistent with recent phylogeographic studies of sub‐Saharan African vertebrates, indicating that widespread and often morphologically uniform species comprise several paraphyletic lineages, often with one or more of the lineages being closely related to phenotypically distinct forms inhabiting a different, yet geographically close, biome. 相似文献
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Diversification of avifaunas associated with savannah and steppes appears to correlate with open habitats becoming available, starting in the Miocene. Few comparative analyses exist for families for which all species are predominantly adapted to these habitats. One such group is Laniidae (Passeriformes), which are small‐ to medium‐sized predatory passerines known for their distinctive behaviour of impaling prey. We used multispecies coalescent‐based and concatenation methods to provide the first complete species‐level phylogeny for this group, as well as an estimate of the timing of diversification. Our analyses indicate that Laniidae as currently delimited is not monophyletic, as the genus Eurocephalus is not closely related to the remaining species. The two species currently assigned to the monotypic genera Urolestes and Corvinella are part of the same clade as the Lanius species, and we propose that they are included in the genus Lanius, making Laniidae monogeneric. The initial diversification of the clade is inferred to have occurred very rapidly, starting about 7.2–9.1 million years ago, timing depending on calibration method, but in either case coinciding with the expansion of C4 grasses. An African origin is inferred in the biogeographic analysis. In the redefined Laniidae, cooperative breeding is inferred to be restricted to a single clade, characterized by gregarious behaviour and rallying. Migratory behaviour evolved multiple times within the family. 相似文献
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Laura J. Pollock Michael J. Bayly Paul G. Nevill Peter A. Vesk 《Journal of Biogeography》2013,40(1):155-167
Aim To relate genetic diversity to topographic features and to investigate genetic interactions between Eucalyptus species in a local centre of endemism and diversity in south‐eastern Australia. Location Grampian Ranges, Victoria, Australia. Methods We documented chloroplast DNA (cpDNA) variation for a group of endemic Eucalyptus species (E. serraensis, E. verrucata and E. victoriana) that dominate rocky, high‐elevation ridgelines of the Grampian Ranges and for one closely‐related, widespread species (E. baxteri) occupying flanking slopes and valleys. We documented genetic patterns across the landscape using cpDNA microsatellites, and related them to topographic features (exposed west‐facing versus protected east‐facing slopes and valleys). We also determined the extent of local haplotype sharing between populations of endemic species and neighbouring E. baxteri downslope with cpDNA microsatellites, and haplotype sharing between the endemic group and more distantly related species (E. obliqua, E. pauciflora and E. willisii) with sequences of the JLA+ chloroplast region. Results We detected 26 cpDNA microsatellite haplotypes in a relatively small area of c. 20 km × 50 km. Populations of E. baxteri on east‐facing slopes and valleys had greater cpDNA microsatellite diversity than E. baxteri and endemic species on exposed west‐facing slopes. Endemic species frequently shared chloroplast haplotypes with E. baxteri downslope. Sharing of JLA+ haplotypes with species outside the endemic group was mostly restricted to E. victoriana, which had cpDNA more similar to the species from other sections of Eucalyptus (E. obliqua, E. willisii and E. pauciflora). Main conclusions Intensive sampling of related species on small isolated mountain ranges allowed us to relate genetic diversity to fine‐scale habitats and to document extensive local haplotype sharing between species. This study contributes to a general understanding of the environmental conditions that enable plant population persistence by linking concentrations of genetic diversity to particular habitats. 相似文献
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Naerhulan Halimubieke Jos O. Valdebenito Philippa Harding Medardo Cruz‐Lpez Martín Alejandro Serrano‐Meneses Richard James Krisztina Kupn Tams Szkely 《Ecology and evolution》2019,9(18):10734-10745
Social monogamy has evolved multiple times and is particularly common in birds. However, it is not well understood why some species live in long‐lasting monogamous partnerships while others change mates between breeding attempts. Here, we investigate mate fidelity in a sequential polygamous shorebird, the snowy plover (Charadrius nivosus), a species in which both males and females may have several breeding attempts within a breeding season with the same or different mates. Using 6 years of data from a well‐monitored population in Bahía de Ceuta, Mexico, we investigated predictors and fitness implications of mate fidelity both within and between years. We show that in order to maximize reproductive success within a season, individuals divorce after successful nesting and re‐mate with the same partner after nest failure. Therefore, divorced plovers, counterintuitively, achieve higher reproductive success than individuals that retain their mate. We also show that different mating decisions between sexes predict different breeding dispersal patterns. Taken together, our findings imply that divorce is an adaptive strategy to improve reproductive success in a stochastic environment. Understanding mate fidelity is important for the evolution of monogamy and polygamy, and these mating behaviors have implications for reproductive success and population productivity. 相似文献
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Jane Melville Margaret L. Haines Joshua Hale Stephanie Chapple Euan G. Ritchie 《Journal of Biogeography》2016,43(9):1844-1855
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Carolina Barros Machado Pedro Manoel Galetti Jr Ana Carolina Carnaval 《Journal of Biogeography》2018,45(6):1313-1325
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