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Hybridization Among The Subspecies Of The Plethodontid Salamander Ensatina Eschscholtzi
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Book Synopsis Hybridization Among the Subspecies of the Plethodontid Salamander Ensatina Eschscholtzi by : Charles William Brown
Download or read book Hybridization Among the Subspecies of the Plethodontid Salamander Ensatina Eschscholtzi written by Charles William Brown and published by . This book was released on 1974 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hybridization Among the Subspecies of the Plethodontid Salamander Ensatina Eschscholtzi by : Charles W. Brown
Download or read book Hybridization Among the Subspecies of the Plethodontid Salamander Ensatina Eschscholtzi written by Charles W. Brown and published by . This book was released on 1974 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hybridization in the Ensatina Ring Species, Strong Selection Against Hybrids at a Hybrid Zone in the Ensatina Ring Species Complex and Its Evolutionary Implications by :
Download or read book Hybridization in the Ensatina Ring Species, Strong Selection Against Hybrids at a Hybrid Zone in the Ensatina Ring Species Complex and Its Evolutionary Implications written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis of interactions between lineages at varying levels of genetic divergence can provide insights into the process of speciation through the accumulation of incompatible mutations. Ring species, and especially the Ensatina eschscholtzii system exemplify this approach. The plethodontid salamanders Ensatina eschscholtzii xanthoptica and Ensatina eschscholtzii platensis hybridize in the Central Sierran foothills of California. We compared the genetic structure across two transects (southern and northern Calaveras Co.), one of which was re-sampled over 20 years, and examined diagnostic molecular markers (eight allozyme loci and mitochondrial DNA) and a diagnostic quantitative trait (color pattern). Key results across all studies were: (i) cline centers for all markers were coincident and the zones were narrow, with width estimates of 730m to 2000m; (ii) cline centers at the northern Calaveras transect were coincident between 1981 and 2001, demonstrating repeatability over 5 generations; (iii) there are very few if any putative F1's, but a relatively high number of backcrossed individuals (57-86 percent) in the central portion of transects; (iv) we found substantial linkage disequilibrium in all three studies and strong heterozygote deficit both in northern Calaveras, in 2001, and southern Calaveras. Both linkage disequilibrium and heterozygote deficit show maximum values near the center of the zones (R and Fis, approx. equal to 0.5). Using estimates of cline width and dispersal, we infer strong selection against hybrids (s* approx. equal to 46-75 percent). This is sufficient to promote accumulation of differences at loci that are neutral or under divergent selection, but would still allow for introgression of adaptive alleles. The evidence for strong, but incomplete isolation across this centrally located contact is consistent with theory suggesting a gradual increase in postzygotic incompatibility between allopatric populations subject to divergent selection and reinforces the value of Ensatina as a system for the study of divergence and speciation at multiple stages.
Book Synopsis Wildlife Abstracts by : U.S. Fish and Wildlife Service
Download or read book Wildlife Abstracts written by U.S. Fish and Wildlife Service and published by . This book was released on 1976 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis USDA Forest Service General Technical Report PSW. by :
Download or read book USDA Forest Service General Technical Report PSW. written by and published by . This book was released on 1980 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report PSW. written by and published by . This book was released on 1978 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Amphibians and Reptiles of Baja California, Including Its Pacific Islands and the Islands in the Sea of Cortés by : L. Lee Grismer
Download or read book Amphibians and Reptiles of Baja California, Including Its Pacific Islands and the Islands in the Sea of Cortés written by L. Lee Grismer and published by Univ of California Press. This book was released on 2002-09-16 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Baja California peninsula is home to many forms of life found nowhere else on earth. This, combined with the peninsula's rugged and inaccessible terrain, has made the area one of the last true biological frontiers of North America. L. Lee Grismer is not only the foremost authority on the amphibians and reptiles of Baja California, but also an outstanding photographer. He has produced the most comprehensive work on the herpetofauna of the peninsula and its islands ever published. With its stunning color images, detailed accounts of many little-known species, and descriptions of the region's diverse environment, this is the definitive guide to the amphibians and reptiles of a fascinating and remote region. The culmination of Grismer's quarter century of fieldwork on the Baja peninsula and his exploration of more than one hundred of its islands in the Pacific Ocean and the Sea of Cortés, this book gives information on the identification, distribution, natural history, and taxonomy of each species of amphibian and reptile found there. Preliminary accounts of the life history of many of the salamanders, frogs, toads, turtles, lizards, and snakes are reported here for the first time, and several species that were almost unknown to science are illustrated in full color. The book also contains new data on species distribution and on the effect of the isolated landscape of the peninsula and its islands on the evolutionary process. Much of the information gathered here is presented in biogeographical overviews that consider the extremely varied environments of Baja California in both a contemporary and a historical framework. An original and important contribution to science, this book will generate further research for years to come as it becomes a benchmark reference for both professionals and amateurs.
Book Synopsis Why Evolution is True by : Jerry A. Coyne
Download or read book Why Evolution is True written by Jerry A. Coyne and published by OUP Oxford. This book was released on 2010-01-14 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: For all the discussion in the media about creationism and 'Intelligent Design', virtually nothing has been said about the evidence in question - the evidence for evolution by natural selection. Yet, as this succinct and important book shows, that evidence is vast, varied, and magnificent, and drawn from many disparate fields of science. The very latest research is uncovering a stream of evidence revealing evolution in action - from the actual observation of a species splitting into two, to new fossil discoveries, to the deciphering of the evidence stored in our genome. Why Evolution is True weaves together the many threads of modern work in genetics, palaeontology, geology, molecular biology, anatomy, and development to demonstrate the 'indelible stamp' of the processes first proposed by Darwin. It is a crisp, lucid, and accessible statement that will leave no one with an open mind in any doubt about the truth of evolution.
Book Synopsis Encyclopedia of Evolutionary Biology by :
Download or read book Encyclopedia of Evolutionary Biology written by and published by Academic Press. This book was released on 2016-04-14 with total page 2138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encyclopedia of Evolutionary Biology, Four Volume Set is the definitive go-to reference in the field of evolutionary biology. It provides a fully comprehensive review of the field in an easy to search structure. Under the collective leadership of fifteen distinguished section editors, it is comprised of articles written by leading experts in the field, providing a full review of the current status of each topic. The articles are up-to-date and fully illustrated with in-text references that allow readers to easily access primary literature. While all entries are authoritative and valuable to those with advanced understanding of evolutionary biology, they are also intended to be accessible to both advanced undergraduate and graduate students. Broad topics include the history of evolutionary biology, population genetics, quantitative genetics; speciation, life history evolution, evolution of sex and mating systems, evolutionary biogeography, evolutionary developmental biology, molecular and genome evolution, coevolution, phylogenetic methods, microbial evolution, diversification of plants and fungi, diversification of animals, and applied evolution. Presents fully comprehensive content, allowing easy access to fundamental information and links to primary research Contains concise articles by leading experts in the field that ensures current coverage of each topic Provides ancillary learning tools like tables, illustrations, and multimedia features to assist with the comprehension process
Book Synopsis Morphologic and Genetic Studies of the European Plethodontid Salamanders by : Benedetto Lanza
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:
Book Synopsis The Biology of Plethodontid Salamanders by : Richard C. Bruce
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 2000-04-30 with total page 506 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.
Book Synopsis California Wildlife and Their Habitats by :
Download or read book California Wildlife and Their Habitats written by and published by . This book was released on 1980 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relationships between wildlife and their habitats are examined in a series of matrixes, species narratives, and distribution maps.
Book Synopsis Reproductive Biology and Phylogeny of Urodela by : Barrie G M Jamieson
Download or read book Reproductive Biology and Phylogeny of Urodela written by Barrie G M Jamieson and published by CRC Press. This book was released on 2003-01-05 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains original contributions from an international group of authors with the highest reputations in their respective areas of phylogenetic and reproductive studies on salamanders and newts. A full panoply of topics is covered, from morphology of gametes and reproductive systems to considerations of behavior and life history, all placed in a phylogenetic context. The chapters not only synthesize past literature but also present new observations and indicate directions for future research. This is an essential text for anyone interested in the biology of urodele amphibians.
Book Synopsis The Biology of Plethodontid Salamanders by : Richard C. Bruce
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.
Book Synopsis Evolutionary and Historical Analysis Within and Among Members of the Salamander Tribe Plethodontini (Amphibia: Plethodontidae) by : Todd Richard Jackman
Download or read book Evolutionary and Historical Analysis Within and Among Members of the Salamander Tribe Plethodontini (Amphibia: Plethodontidae) written by Todd Richard Jackman and published by . This book was released on 1993 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife Review written by and published by . This book was released on 1976 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Speciation and Its Consequences by : Daniel Otte
Download or read book Speciation and Its Consequences written by Daniel Otte and published by Sinauer Associates, Incorporated. This book was released on 1989 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
