Download or read book Morphologic and Genetic Studies of the European Plethodontid Salamanders written by Benedetto Lanza and published by Museo Reg. Scienze Nat. Torino. This book was released on 1995 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biology of Plethodontid Salamanders written by Richard C. Bruce and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers a state-of-the-art overview of plethodontid salamanders. Readers will find the best current understanding of many aspects of the evolution, systematics, development, morphology, life history, ecology, and field methodology of these animals.
Download or read book Genome Evolution Morphological Homoplasy and the Phylogeny of Plethodontid Salamanders written by Rachel Lockridge Mueller and published by . This book was released on 2005 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Ecology and Morphology in the Plethodontid Salamander Genus Batrachoseps written by Christopher James Evelyn and published by . This book was released on 2016 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolution of interspecific morphological diversity within a clade is one of the fundamental patterns studied in evolutionary biology. These morphological differences may reflect adaptation to different environmental conditions and influence patterns across biogeographical spatial scales and macroevolutionary time scales. Using a multivariate measure of morphological shape and a well-studied phylogenetic hypothesis for the plethodontid salamander genus Batrachoseps, I revealed the strong correlation between morphology and species range size, and tested ecological hypotheses that might explain this relationship. Morphological evolution in Batrachoseps can be generally described as variation on the theme of elongation, a pattern also seen in several families of lizards such as Scincidae and Gymnophthalmidae. In Batrachoseps the most elongate forms appear wormlike with highly reduced limbs. Generalized forms of Batrachoseps are similar in proportion to other small salamanders in the family Plethodontidae, such as Plethodon.
Download or read book Morphological Homoplasy Life History Evolution and Historical Biogeography of Plethodontid Salamanders Inferred from Complete Mitochondrial Genomes written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolutionary history of the largest salamander family (Plethodontidae) is characterized by extreme morphological homoplasy. Analysis of the mechanisms generating such homoplasy requires an independent, molecular phylogeny. To this end, we sequenced 24 complete mitochondrial genomes (22 plethodontids and two outgroup taxa), added data for three species from GenBank, and performed partitioned and unpartitioned Bayesian, ML, and MP phylogenetic analyses. We explored four dataset partitioning strategies to account for evolutionary process heterogeneity among genes and codon positions, all of which yielded increased model likelihoods and decreased numbers of supported nodes in the topologies (PP> 0.95) relative to the unpartitioned analysis. Our phylogenetic analyses yielded congruent trees that contrast with the traditional morphology-based taxonomy; the monophyly of three out of four major groups is rejected. Reanalysis of current hypotheses in light of these new evolutionary relationships suggests that (1) a larval life history stage re-evolved from a direct-developing ancestor multiple times, (2) there is no phylogenetic support for the ''Out of Appalachia'' hypothesis of plethodontid origins, and (3) novel scenarios must be reconstructed for the convergent evolution of projectile tongues, reduction in toe number, and specialization for defensive tail loss. Some of these novel scenarios imply morphological transformation series that proceed in the opposite direction than was previously thought. In addition, they suggest surprising evolutionary lability in traits previously interpreted to be conservative.
Download or read book Gene Flow and the Relationship of Plethodon Stormi and P Elongatus Assessed with 11 Novel Microsatellite Loci written by Douglas James DeGross and published by . This book was released on 2004 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plethodontid salamanders are model organisms for studying evolutionary questions of gene flow, restricted ranges, and speciation. Plethodon, a diverse genus within Plethodontidae, is widely distributed in eastern and western North America. Much research has been based in the eastern United States where diversity of these salamanders is high. Because of their morphological conservatism, genetic analysis has often been used to address the questions of population structure, speciation, and gene flow. The majority of these analyses have relied on allozyme and mtDNA markers. However, these markers have their shortcomings in resolving differentiation on a small geographic scale. To date no researchers have used nuclear microsatellites to address systematic questions in plethodontid salamanders. I developed 11 nuclear microsatellite loci to address evolutionary questions in two western members of the genus Plethodon, the sister species Plethodon elongatus and P. storni. The taxonomic status of these salamanders has been a source of contention. Although recent mtDNA analyses reveal the presence of a third species previously included as P. storini in the Scott River drainage, no samples from this possible new species are included in this thesis. Substructure inferred from the mtDNA analyses within the range of P. stormi is assessed, as well as gene flow between P. elongatus and P. stormi. My results provide strong support for treating P. elongatus and P. stormi as separate species.
Download or read book Herpetology written by Laurie J. Vitt and published by Academic Press. This book was released on 2013-03-25 with total page 773 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth edition of the textbook Herpetology covers the basic biology of amphibians and reptiles, with updates in nearly every conceptual area. Not only does it serve as a solid foundation for modern herpetology courses, but it is also relevant to courses in ecology, behavior, evolution, systematics, and morphology. Examples taken from amphibians and reptiles throughout the world make this book a useful herpetology textbook in several countries. Naturalists, amateur herpetologists, herpetoculturists, zoo professionals, and many others will find this book readable and full of relevant natural history and distributional information. Amphibians and reptiles have assumed a central role in research because of the diversity of ecological, physiological, morphological, behavioral, and evolutionary patterns they exhibit. This fully revised edition brings the latest research to the reader, ranging over topics in evolution, reproduction, behavior and more, allowing students and professionals to keep current with a quickly moving field. Heavily revised and updated with discussion of squamate (lizard and snake) taxonomy and new content reflected in current literature Includes increased focus on conservation biology in herpetology while retaining solid content on organismal biology of reptiles and amphibians Presents new photos included from authors' extensive library
Download or read book Phylogeography of Southern European Refugia written by Steven Weiss and published by Springer Science & Business Media. This book was released on 2007-06-04 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the first synthesis of the remarkable diversity, evolutionary complexity, and conservation importance of the flora and fauna in the Mediterranean region, with emphasis on the three major peninsular refugia. The book highlights biodiversity importance in Southern Europe for European biota conservation, and includes chapters from authorities in phylogeography: John Avise, Remy Petit, Ettore Randi.
Download or read book Salamanders of the Old World written by Max Sparreboom and published by BRILL. This book was released on 2014-09-08 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Salamanders of the Old World is a new in-depth reference work covering all the salamander species of Europe, Asia, and North Africa. A marvellous addition for the herp community that comes recommended for researchers, managers, conservationists, students, and salamander enthusiasts. Salamanders of the Old World • features information on biology and life history of salamanders • includes over 150 species of Europe, Asia, and North Africa • richly illustrated • focuses on habitat, behaviour, and reproduction • information on identification, eggs and larvae, and threats and species conservation • distribution maps for all species • an extensive reference list. Published in cooperation between KNNV Publishing and Naturalis Biodiversity Centre (The Netherlands).
Download or read book Lineage Divergence and Species Formation in Plethodontid Salamanders written by Sean Michael Rovito and published by . This book was released on 2009 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alien Reptiles and Amphibians written by Fred Kraus and published by Springer Science & Business Media. This book was released on 2008-12-19 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transportation of species to areas outside their native ranges has been a feature of human culture for millennia. During this time such activities have largely been viewed as beneficial or inconsequential. However, it has become increasingly clear that human-caused introductions of alien biota are an ecological disruption whose consequences rival those of better-known insults like chemical pollution, habitat loss, and climate change. Indeed, the irreversible nature of most alien-species int- ductions makes them less prone to correction than many other ecological problems. Current reshuffling of species ranges is so great that the present era has been referred to by some as the “Homogocene” in an effort to reflect the unique mag- tude of the changes being made. These alien interlopers often cause considerable ecological and economic d- age where introduced. Species extinctions, food-web disruptions, community alte- tions, ecosystem conversion, changes in nutrient cycling, fisheries collapse, watershed degradation, agricultural loss, building damage, and disease epidemics are among the destructive – and frequently unpredictable – ecological and economic effects that invasive alien species can inflict. The magnitude of these damages c- tinues to grow, with virtually all environments heavily used by humans now do- nated by alien species and many “natural” areas becoming increasingly prone to alien invasion as well. Attention to this problem has increased in the past decade or so, and efforts to prevent or limit further harm are gaining wider scientific and political acceptance.
Download or read book Issues in Biological Biochemical and Evolutionary Sciences Research 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 2848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Biological, Biochemical, and Evolutionary Sciences Research: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Biological, Biochemical, and Evolutionary Sciences Research. The editors have built Issues in Biological, Biochemical, and Evolutionary Sciences Research: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Biological, Biochemical, and Evolutionary Sciences Research in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Biological, Biochemical, and Evolutionary Sciences Research: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Modular Evolution and Systematics of Neotropical Salamanders Caudata Plethodontidae Bolitoglossini written by Gabriela Parra Olea and published by . This book was released on 1999 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetics of Speciation written by David L. Jameson and published by . This book was released on 1977 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nature of populations, races, subspecies, and species. Genetic basis of isolation. Origin of isolation - theoretical. Origin of isolation - experimental. The nature of the speciation process.
Download or read book Amphibian Biology written by Harold Heatwole and published by . This book was released on 1994 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amphibian Biology was inspired by Biology of the Reptilia, edited by Carl Gans, and is intended as a companion to that series.
Download or read book Communications written by and published by . This book was released on 1994 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alytes written by and published by . This book was released on 1997 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
