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Determining The Causes And Consequences Of Speciation In Western North American Scincid Lizards Of The Plestiodon Skiltonianus Species Complex Squamata Scincidae
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Book Synopsis Determining the Causes and Consequences of Speciation in Western North American Scincid Lizards of the Plestiodon Skiltonianus Species Complex (squamata: Scincidae). by : Jonathan Q Richmond
Download or read book Determining the Causes and Consequences of Speciation in Western North American Scincid Lizards of the Plestiodon Skiltonianus Species Complex (squamata: Scincidae). written by Jonathan Q Richmond and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation investigates a candidate example of parallel speciation in North American scincid lizards of the Plestiodon skiltonianus species group. Parallel speciation occurs when morphologically similar but phylogenetically distant populations are more reproductively compatible than are morphologically differentiated but closely related individuals. The skiltonianus group consists of two ecotypes that differ primarily in adult body size. A molecular phylogeny based on mtDNA showed that the larger ecotype, P. gilberti, evolved multiple times independently from within the smaller ecotype, P. skiltonianus. Although clades with opposite ecomorphology appear to be reproductively isolated, circumstantial evidence indicates that gilberti clades in secondary geographic contact may not be. The first two chapters provide explicit tests of the parallel speciation hypothesis. Chapter 1 describes mate compatibility experiments using wild-caught skinks that were designed to separate the effects of genetic differentiation, geographic separation and body size differentiation on mate compatibility. The difference in body size has a significant effect on the probability of copulation, whereas the other variables do not. I argue that the body size effect results from a mechanical constraint on copulation likely to be general for lizards. Chapter 2 describes a complementary molecular study using AFLP markers that was designed to test whether there is ongoing nuclear gene flow between gilberti clades, which come into geographic contact in the southern Sierra Nevada. Bayesian analyses show that the degree of population differentiation increases with increasing distance from the mtDNA contact zone; this provides evidence for gene flow between independently evolved clades of gilberti. To my knowledge, the skiltonianus group provides the first example of parallel ecological speciation in which the lineages that evolved in parallel are merging in nature. Chapter 3 examines patterns of morphological variation. Morphological variation is largely partitioned by sex and ecomorph. Subtle differences were also detected between the clades of gilberti, but these clades overlap substantially in morphology, emphasizing their morphological parallelism. Chapter 4 investigated broad-scale patterns of morphological evolution in North American Plestiodon. Comparative phylogenetic analyses were used test alternative hypotheses of character evolution, with the goal of providing insight into the developmental mechanisms that shaped the current morphological diversity.
Book Synopsis Determining the Causes and Consequences of Speciation in Western North American Scincid Lizardsof the Plestiodon Skiltonianus Species Complex (Squamata: Scincidae) by : Jonathan Q. Richmond
Download or read book Determining the Causes and Consequences of Speciation in Western North American Scincid Lizardsof the Plestiodon Skiltonianus Species Complex (Squamata: Scincidae) written by Jonathan Q. Richmond and published by . This book was released on 2005 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lineage Diversification of Lizards (Phrynosomatidae) in Southwestern North America by :
Download or read book Lineage Diversification of Lizards (Phrynosomatidae) in Southwestern North America written by and published by . This book was released on 2015 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first chapter of my dissertation, I provide an ultimate tectonic hypothesis for several well-studied zoogeographic boundaries along the west coast of North America, specifically along the San Andreas Fault system. Reviewing the literature, I demonstrate that four Great Pacific Fracture Zones correspond with spatially concordant phylogeographic breaks for a variety of marine and terrestrial animals. I hypothesize that the four zoogeographic boundaries reviewed here ultimately originated via the same tectonic process (triple junction evolution along the San Andreas Fault system), and I suggest how a comparative phylogeographic approach can be used to test this hypothesis. In the second chapter, I investigate the systematics and species delimitation of fringe-toed lizards of the Uma notata complex in the deserts of southwestern North America. Ten nuclear loci were Sanger sequenced and genome-wide sequence and single-nucleotide polymorphism (SNP) data were collected using restriction-associated DNA (RAD) sequencing. I validated five species-level lineages within the U. notata complex, three of which were previously described as full species, one originally described as a subspecies but later synonymized, and one previously documented yet undescribed species from Mohawk Dunes, Arizona, USA. The results support the hypothesis that Pleistocene glacial cycles promoted allopatric speciation via dispersal across a landscape matrix shaped by older tectonic events, but I also recovered evidence for a vicariant role of the Colorado River during the Pleistocene epoch. In the third chapter, I studied the comparative phylogeography of lizards (Phrynosomatidae) of the Baja California Peninsula, including the genera Callisaurus, Petrosaurus, Urosaurus, and Sceloporus. I collected sequence/SNP data from 228 individual lizards from the peninsula and eight islands using RADseq. The estimated divergence dates across co-distributed clades revealed that for each of the five regions where comparisons are possible, at least two or three episodes of divergence are required to explain the observed patterns. I tested for range expansions or bottlenecks associated with Pleistocene glacial cycles or continent-to-peninsula invasions. The results are consistent with the hypothesis that plate tectonic events established a complex landscape matrix with numerous barriers to dispersal that ultimately facilitated divergence, generating the idiosyncratic patterns observed among co-distributed lineages.
Book Synopsis Speciation in North American Spiny Lizards (genus Sceloporus) by : Adam David Leaché
Download or read book Speciation in North American Spiny Lizards (genus Sceloporus) written by Adam David Leaché and published by . This book was released on 2008 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Iguanas of the World by : Gordon M. Burghardt
Download or read book Iguanas of the World written by Gordon M. Burghardt and published by William Andrew Inc.. This book was released on 1982 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iguanas are large, primeval-appearing animals that have always attracted considerable attention and scientific study. The 30 species of iguanas are today collectively referred to as iguanines, or the subfamily Iguaninae, of the lizard family Iguanidae. This book is the result of a symposium of worldwide scientists on the world's iguanas that was held at a joint meeting of the Society of the Study of Amphibians and Reptiles and The Herpetologist's League. Over 30 recognized experts submitted their studies of these interesting reptiles, and have published what was once unknown and unpublished information. This book was a leader in its time and still serves as a wonderful reference for scientist and student alike.
Book Synopsis Reproductive Cycles of Lizards and Snakes (Classic Reprint) by : Henry S. Fitch
Download or read book Reproductive Cycles of Lizards and Snakes (Classic Reprint) written by Henry S. Fitch and published by Forgotten Books. This book was released on 2016-12-23 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Reproductive Cycles of Lizards and Snakes Partly from published literature information has been compiled for many species, but for most Of them available data are few. Most detailed life history studies that include intensive investigation Of reproductive cycles have been made in the United States, Europe, and Japan, with little information from elsewhere, including the tropics where most species of reptiles occur. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Book Synopsis The Temperature and Water Relations of Reptiles by : J. L. Cloudsley-Thompson
Download or read book The Temperature and Water Relations of Reptiles written by J. L. Cloudsley-Thompson and published by . This book was released on 1971 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology and Natural History of Desert Lizards by : Eric R. Pianka
Download or read book Ecology and Natural History of Desert Lizards written by Eric R. Pianka and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eric Pianka offers a synthesis of his life's work on the comparative ecology of lizard assemblages in the Great Basin. Mojave and Sonoran deserts of western North America, the Kalahari semi-desert of southern Africa, and the Great Victoria desert of Western Australia. Originally published in 1986. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Download or read book Lizards written by Eric R. Pianka and published by Univ of California Press. This book was released on 2003-09-24 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the diversity of lizards and their major adaptive features. The authors discuss the latest research findings and provide new hypotheses about lizard diversity.
Download or read book Homoplasy written by Michael J. Sanderson and published by Elsevier. This book was released on 1996-10-21 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why do unrelated organisms sometimes appear almost identical in details of the anatomy, behavior, physiology, and ecology? Homoplasy assembles leaders in evolutionary biology to explore issues of parallelism, convergence, and reversals. This innovative book is certain to provoke discussion of homoplasy compelling evidence for particular theories of evolutionary change The first book on this increasingly interesting subject Includes authoritative treatments from leading experts expressing a variety of viewpoints
Book Synopsis Phylogenetic Relationships of the Lizard Families by : Richard Estes
Download or read book Phylogenetic Relationships of the Lizard Families written by Richard Estes and published by Stanford University Press. This book was released on 1988 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of the Academy of Natural Sciences of Philadelphia by : The Academy of Natural Sciences of Philadephia
Download or read book Journal of the Academy of Natural Sciences of Philadelphia written by The Academy of Natural Sciences of Philadephia and published by . This book was released on 1884 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Herpetology written by Laurie J. Vitt and published by Academic Press. This book was released on 2012-12-02 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Herpetology has always been one of the most exciting disciplines of zoology. During the past few years the field has continued to grow, yet it has been plagued by scarcity of comprehensive, up-to-date textbooks containing the most important developments. This timely book fills that void. Through skillful synthesis, the author summarizes the diversity in the biology of living amphibians and reptiles and describes the breadth of current herpetological research. Topics covered include the evolution, classification, development, reproduction, population, and environmental issues surrounding the study of amphibians and reptiles. Designed as an advanced undergraduate textbook, Herpetology is a valuable resource for students, practitioners, and interested amateurs alike. Provides an incisive survey and much needed update of the field Emphasizes the biological diversity among amphibians and reptiles Details the most recent research findings, citing ke
Download or read book Giant Snakes written by John C. Murphy and published by Book Services Us. This book was released on 2019-03 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Snakes, particularly exceptionally large constricting snakes, have haunted the human brain for a millennium. They appear to be responsible for our excellent vision and are providing insight into diabetes. Fascination with snakes has also drawn many to keep them as pets. This book explores what we know about the largest snakes.
Book Synopsis Ecology and Evolution of Darwin's Finches (Princeton Science Library Edition) by : Peter R. Grant
Download or read book Ecology and Evolution of Darwin's Finches (Princeton Science Library Edition) written by Peter R. Grant and published by Princeton University Press. This book was released on 2017-03-14 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: After his famous visit to the Galápagos Islands, Darwin speculated that "one might fancy that, from an original paucity of birds in this archipelago, one species had been taken and modified for different ends." This book is the classic account of how much we have since learned about the evolution of these remarkable birds. Based upon over a decade's research, Grant shows how interspecific competition and natural selection act strongly enough on contemporary populations to produce observable and measurable evolutionary change. In this new edition, Grant outlines new discoveries made in the thirteen years since the book's publication. Ecology and Evolution of Darwin's Finches is an extraordinary account of evolution in action. Originally published in 1986. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Book Synopsis Amphibians and Reptiles of Morocco by : Gabriel Martínez del Mármol
Download or read book Amphibians and Reptiles of Morocco written by Gabriel Martínez del Mármol and published by . This book was released on 2019 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
