Academic literature on the topic 'Subspecies divergence'

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Journal articles on the topic "Subspecies divergence"

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Ho, Un-Hyang, and Sam-Rang Song. "Did genetic lineage divergence or spatial environmental variance lead to global subspecies differentiation of northern goshawk (Accipiter gentilis)?" Animal Biology 70, no. 3 (2020): 289–308. http://dx.doi.org/10.1163/15707563-bja10003.

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Abstract When a widely distributed species undergoes ecological or geological isolation, it tends to divide into subspecies. In general, subspecies differentiation is affected by environmental variance and genetic divergence. But the extent to which these two factors influence subspecies differentiation in species with different distribution ranges and modes of living, might be different. Despite having high breeding habitat fidelity, northern goshawk is a forest raptor that is widely dispersed. We investigated morphological traits in combination with the genetic background of northern goshawk
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Cronin, Matthew A., Susan Hills, Erik W. Born, and John C. Patton. "Mitochondrial DNA variation in Atlantic and Pacific walruses." Canadian Journal of Zoology 72, no. 6 (1994): 1035–43. http://dx.doi.org/10.1139/z94-140.

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We used restriction enzyme analysis of polymerase chain reaction amplified mitochondrial DNA to assess genetic differentiation of two subspecies of walruses: Atlantic walruses (Odobenus rosmarus rosmarus) from Greenland and Pacific walruses (O. r. divergens) from the Chukchi Sea. Each subspecies has distinct monophyletic mitochondrial DNA haplotypes. Mitochondrial DNA sequence divergence between Atlantic and Pacific subspecies was 1.0–1.6%. Several haplotypes were observed for each subspecies. Haplotype frequencies varied among sampling locations of Atlantic walruses, suggesting that mitochond
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Kikuchi, Satoshi, and Yoko Osone. "Subspecies divergence and pronounced phylogenetic incongruence in the East-Asia-endemic shrub Magnolia sieboldii." Annals of Botany 127, no. 1 (2020): 75–90. http://dx.doi.org/10.1093/aob/mcaa174.

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Abstract Background and Aims The biogeographic patterns of the East-Asia-endemic shrub Magnolia sieboldii, in which the range of the subsp. sieboldii is interposed with the disjunct distribution of subsp. japonica, implies a complex evolutionary history, involving rapid speciation and hybridization. Here, we aim to reveal the evolutionary and phylogeographic histories of the species with a particular focus on the time of subspecies divergence, the hypothesis of secondary hybridization and the Pleistocene survival of each subspecies, using a combination of genetic analyses and ecological niche
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Lindsey, Laramie L., and Loren K. Ammerman. "Patterns of genetic diversification in a widely distributed species of bat, Molossus molossus." Occasional Papers Museum Texas Tech University, no. 339 (June 12, 2016): 1–16. https://doi.org/10.5281/zenodo.13448479.

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(Uploaded by Plazi for the Bat Literature Project) The taxonomy and evolutionary relationships of the Velvety Free-tailed Bat, Molossus molossus, from Central and South America long have been debated. Within this species, and in fact the entire genus Molossus, specimens have been difficult to identify and have presented several taxonomic challenges. The objective of this project was to characterize the genetic relationship among individuals representing subspecies of the widely distributed species, M. molossus. We tested the hypothesis that genetic patterns of diversification would reflect sub
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Lindsey, Laramie L., and Loren K. Ammerman. "Patterns of genetic diversification in a widely distributed species of bat, Molossus molossus." Occasional Papers Museum Texas Tech University, no. 339 (June 7, 2016): 1–16. https://doi.org/10.5281/zenodo.13448479.

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(Uploaded by Plazi for the Bat Literature Project) The taxonomy and evolutionary relationships of the Velvety Free-tailed Bat, Molossus molossus, from Central and South America long have been debated. Within this species, and in fact the entire genus Molossus, specimens have been difficult to identify and have presented several taxonomic challenges. The objective of this project was to characterize the genetic relationship among individuals representing subspecies of the widely distributed species, M. molossus. We tested the hypothesis that genetic patterns of diversification would reflect sub
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Lindsey, Laramie L., and Loren K. Ammerman. "Patterns of genetic diversification in a widely distributed species of bat, Molossus molossus." Occasional Papers Museum Texas Tech University, no. 339 (July 3, 2016): 1–16. https://doi.org/10.5281/zenodo.13448479.

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(Uploaded by Plazi for the Bat Literature Project) The taxonomy and evolutionary relationships of the Velvety Free-tailed Bat, Molossus molossus, from Central and South America long have been debated. Within this species, and in fact the entire genus Molossus, specimens have been difficult to identify and have presented several taxonomic challenges. The objective of this project was to characterize the genetic relationship among individuals representing subspecies of the widely distributed species, M. molossus. We tested the hypothesis that genetic patterns of diversification would reflect sub
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Lindsey, Laramie L., and Loren K. Ammerman. "Patterns of genetic diversification in a widely distributed species of bat, Molossus molossus." Occasional Papers Museum Texas Tech University, no. 339 (July 10, 2016): 1–16. https://doi.org/10.5281/zenodo.13448479.

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(Uploaded by Plazi for the Bat Literature Project) The taxonomy and evolutionary relationships of the Velvety Free-tailed Bat, Molossus molossus, from Central and South America long have been debated. Within this species, and in fact the entire genus Molossus, specimens have been difficult to identify and have presented several taxonomic challenges. The objective of this project was to characterize the genetic relationship among individuals representing subspecies of the widely distributed species, M. molossus. We tested the hypothesis that genetic patterns of diversification would reflect sub
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Lindsey, Laramie L., and Loren K. Ammerman. "Patterns of genetic diversification in a widely distributed species of bat, Molossus molossus." Occasional Papers Museum Texas Tech University, no. 339 (July 17, 2016): 1–16. https://doi.org/10.5281/zenodo.13448479.

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(Uploaded by Plazi for the Bat Literature Project) The taxonomy and evolutionary relationships of the Velvety Free-tailed Bat, Molossus molossus, from Central and South America long have been debated. Within this species, and in fact the entire genus Molossus, specimens have been difficult to identify and have presented several taxonomic challenges. The objective of this project was to characterize the genetic relationship among individuals representing subspecies of the widely distributed species, M. molossus. We tested the hypothesis that genetic patterns of diversification would reflect sub
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Gregorin, Renato, Daysa Athaydes, José Eustáquio Santos Júnior, and Tárik Bet Ayoub. "Taxonomic status of Tamarinus imperator subgrisescens (Lönnberg, 1940) (Cebidae, Callitrichinae)." Papéis Avulsos de Zoologia 63 (January 23, 2023): e202363005. http://dx.doi.org/10.11606/1807-0205/2023.63.005.

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The emperor tamarin, Tamarinus imperator, is composed of two subspecies, the nominal type, T. i. imperator, distributed between the Acre and Purus Rivers, whose range is limited between the Brazilian state of Acre and Peru are unbounded, and T. i. subgrisescens, occurring in Peru, Bolivia, and Brazil, in the Brazilian states of Acre and Amazonas. Morphologically, both taxa are easily identifiable by the pelage pattern (chromogenetic fields), and even being easily distinguishable, both lineages are considered subspecies according to the criterion based on the Biological Concept of Species from
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Keeley, Ernest R., Janet L. Loxterman, Sammy L. Matsaw, Zacharia M. Njoroge, Meredith B. Seiler, and Steven M. Seiler. "Morphological and genetic concordance of cutthroat trout (Oncorhynchus clarkii) diversification from western North America." Canadian Journal of Zoology 99, no. 4 (2021): 235–48. http://dx.doi.org/10.1139/cjz-2020-0106.

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The cutthroat trout (Oncorhynchus clarkii (Richardson, 1836)) is one of the most widely distributed species of freshwater fish in western North America. Occupying a diverse range of habitats, they exhibit significant phenotypic variability that is often recognized by intraspecific taxonomy. Recent molecular phylogenies have described phylogenetic diversification across cutthroat trout populations, but no study has provided a range-wide morphological comparison of taxonomic divisions. In this study, we used linear- and geometric-based morphometrics to determine if phylogenetic and subspecies di
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Dissertations / Theses on the topic "Subspecies divergence"

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Hung-WeiChen and 陳虹維. "Multilocus analysis of genetic divergence between subspecies in Arabidopsis halleri." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/48009781112420787203.

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碩士<br>國立成功大學<br>生命科學系碩博士班<br>101<br>Arabidopsis halleri, a species related to A. thaliana, is a self-incompatible and highly outcrossing perennial species. A. halleri with five subspecies is distributed in Eurasia. In this study, genomic divergence among four subspecies of halleri, ovirensis, gemmifera, and tatrica was examined based on 100 randomly selected genes. In total, 65 genes displayed tree topologies consistent with the putative species tree that supported monophyly of A. halleri; 18 genes supported reciprocal monophyly of subspecies. Systematic simulation via random sampling of allel
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Rottscheidt, Ruth [Verfasser]. "Gene expression divergence between subspecies of the house mouse and the contribution to reproductive isolation / vorgelegt von Ruth Rottscheidt." 2007. http://d-nb.info/988957582/34.

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Book chapters on the topic "Subspecies divergence"

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Brakefield, Paul M., and Tim G. Shreeve. "Case studies in evolution." In The Ecology of Butterflies in Britain. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780198540250.003.0009.

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Abstract Genetic variation is all important to evolutionary change. It forms the basis of adaptation to specific or novel environments and also of divergence between populations and speciation. This chapter uses work on three European satyrine butterflies to illustrate the processes involved in such divergence. Firstly, studies of local differences, and of progressive clinal changes between populations are described. These may reflect changes in adaptation to the environ¬ ment. Secondly, examples of more extensive pheno¬typic and genetic divergence characteristic of disjunctraces or subspecies
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Mayr, Ernst, and Jared Diamond. "Geographic Variation Megasubspecies." In The Birds of Northern Melanesia. Oxford University PressNew York, NY, 2001. http://dx.doi.org/10.1093/oso/9780195141702.003.0020.

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Abstract Like almost any classificatory system that classifies anything, the Linnaean system of taxonomic classification makes arbitrary divisions between items, some of which, in fact, grade continuously into each other. Dividing the continuous processes of speciation and geographic variation into hierarchical taxonomic levels is an obvious example. The formal alternatives available to us for expressing the relationship between two populations are to consider them as members of the same subspecies; as members of different subspecies, but of the same species or allospecies; as members of diffe
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"Cutthroat Trout: Evolutionary Biology and Taxonomy." In Cutthroat Trout: Evolutionary Biology and Taxonomy, edited by Dennis K. Shiozawa, R. Paul Evans, Derek D. Houston, and Peter J. Unmack. American Fisheries Society, 2018. http://dx.doi.org/10.47886/9781934874509.ch6.

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&lt;em&gt;Abstract&lt;/em&gt;.—North American trout have undergone a long and complicated taxonomic history and this holds for taxonomic designations of Cutthroat Trout &lt;em&gt;Oncorhynchus clarkii&lt;/em&gt;. Current Cutthroat Trout taxonomy recognizes a monophyletic species comprising 11–16 subspecies. The complex geological and climatic history of western North America is postulated to have strongly influenced differentiation among Cutthroat Trout subspecies. Early studies relied on morphological and meristic data in conjunction with fossil data and known aquatic connections within and am
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Thompson, John D. "The evolution of endemic plants." In Plant Evolution in the Mediterranean. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198835141.003.0003.

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In this chapter the phasing of the geological and climatic history of the Mediterranean basin is used to provide a structure for the presentation of the processes of plant diversification and in particular the evolution of endemism. In many groups of plants, evolution has occurred repeatedly during the different major phases of the region’s history. This chapter illustrates these processes and describes the major patterns of east to west diversification across the region that evolved at different times and produced the patterns described in the previous chapter. The divergence of endemic speci
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Moore, Williams, and Jeff T. Price. "Nature of Selection in the Northern Flicker Hybrid Zone and Its Implications for Speciation Theory." In Hybrid Zones and the Evolutionary Process. Oxford University PressNew York, NY, 1993. http://dx.doi.org/10.1093/oso/9780195069174.003.0008.

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Abstract Hybrid zones are regions of steep genotypic transition between populations that have reached a level of divergence comparable to that between “good” species. Remarkably, however, hybrid zones appear to be equilibrium configurations where the parental populations (whether they are called species, subspecies, or races) retain their taxonomic identity and integrity even though reproductive isolation is incomplete or, in many instances, wholly lacking. Although species definitions remain very much in contention (Mayr, 1957, 1987; Ehrlich, 1961; Sokal and Crovello, 1970; Mishler and Donogh
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Belt, Paul J., Anita Malhotra, Rogers Thorpe, David A. Warrell, and Wolfgang Wuster. "Russell ‘s viper in Indonesia: snakebite and systematics." In Venomous Snakes. Oxford University PressOxford, 1996. http://dx.doi.org/10.1093/oso/9780198549864.003.0016.

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Abstract Russell ‘s viper has a widespread but discontinuous distribution across 10 Asian countries. The presence of the species in southern Indonesia is of particular interest, as these populations are isolated by more than 2000 km from the nearest conspecific populations in Thailand. Formerly divided into five subspecies, the population systematics of this species has recently been revised as a result of a multivariate analysis of scalation and colour pattern characteristics. The analysis reveals two morphologically distinct forms occupying the eastern and western part of the range of the sp
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