Download or read book Inter and Intraspecific Phylogeography of North American Odocoileus Deer Based on Mitochondrial DNA Sequences written by Annette D. Greenslade and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mitochondrial DNA and Nuclear Gene Diversity Among White tailed Deer Odocoileus Virginianus Populations in the Southeastern United States and Within the North American Prairie Grouse Tympanuchus Complex written by Darrell Lee Ellsworth and published by . This book was released on 1991 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Molecular Genetic Analysis of Hybridization Between Two Species of Deer Odocoileus in Western Canada written by Glenys Anne Hughes and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybridization between two species of deer (Odocoileus) in western Canada has been postulated for many years. Mitochondrial and nuclear components of the genomes of deer from this and other regions in North America were analyzed to test whether these deer constitute reproductively isolated species or whether interspecies genetic exchange has occurred by hybridization. -- The polymerase chain reaction (PCR) was used to amplify a 359 base pair fragment of the mitochondrial cytochrome b gene from 81 white-tailed deer (O. virginianus), mule deer (O. hemionus hemionus), and Sitka black-tailed deer (O. hemionus sitkensis). Direct DNA sequencing of a 302 base pair block of the PCR-amplified products revealed 34 variable nucleotide positions. These variants define 13 distinct mitochondrial DNA (mtDNA) sequence genotypes. Twelve of these are confined to one or the other species: five genotypes were found only in white-tailed deer and seven only in mule deer or black-tailed deer. In only one instance is a genotype shared between species: a single deer that had been identified as a mule deer possessed a white-tailed deer-type mtDNA. -- Allelic variants at the albumin locus also distinguish the two species. Of 53 animals sampled from British Columbia, Alberta, and Saskatchewan, 25 white-tailed deer and 27 mule deer were homozygous for slow and fast albumin alleles, respectively. Only one animal showed the heterozygote albumin pattern characteristic of hybrid deer. This individual is the same mule deer that possessed an mtDNA genotype found otherwise only in white-tailed deer. -- These data suggest there is little genetic introgression between mule deer and white-tailed deer in western Canada. Similar findings have been reported for Odocoileus in Montana, but high levels of hybridization have been documented between the same species in west Texas. Habitat disturbance and mating behaviour are factors that may affect the frequency and direction of hybridization in different localities. -- Phenetic and cladistic analyses of sequence differences among white-tailed deer, mule deer, and black-tailed deer reveal a discordance between mtDNA genotype and species affinity. Interspecies hybridization, random phylogenetic sorting of mtDNA lineages, and differential rate of mtDNA evolution are considered as hypotheses to explain the relationships among mtDNA genotypes of these species.
Download or read book Genetic Interactions Between Two Species of North American Deer Odocoileus Virginianus and Ococoileus Hemionus written by James Newton Derr and published by . This book was released on 1990 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Deer of North America written by Walter Penn Taylor and published by . This book was released on 1969 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Zoology written by and published by . This book was released on 1991 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book THE STATE OF THE WORLD s FOREST GENETIC RESOURCES written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-05-25 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The publication was prepared based on information provided by 86 countries, outcomes from regional and subregional consultations and commissioned thematic studies. It includes: •an overview of definitions and concepts related to Forest Genetic Resources (FGR) and a review of their value; •a description of the main drivers of changes; •the presentation of key emerging technologies; •an analysis of the current status of FGR conservation, use and related developments; •recommendations addressing the challenges and needs. By the FAO Commission on Genetic Resources for Food and Agriculture.
Download or read book High Mountain Conservation in a Changing World written by Jordi Catalan and published by Springer. This book was released on 2017-08-03 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides case studies and general views of the main processes involved in the ecosystem shifts occurring in the high mountains and analyses the implications for nature conservation. Case studies from the Pyrenees are preponderant, with a comprehensive set of mountain ranges surrounded by highly populated lowland areas also being considered. The introductory and closing chapters will summarise the main challenges that nature conservation may face in mountain areas under the environmental shifting conditions. Further chapters put forward approaches from environmental geography, functional ecology, biogeography, and paleoenvironmental reconstructions. Organisms from microbes to large carnivores, and ecosystems from lakes to forest will be considered. This interdisciplinary book will appeal to researchers in mountain ecosystems, students and nature professionals. This book is open access under a CC BY license.
Download or read book Poplars and Willows written by Jud G. Isebrands and published by CABI. This book was released on 2014-02-12 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poplars and willows form an important component of forestry and agricultural systems, providing a wide range of wood and non-wood products. This book synthesizes research on poplars and willows, providing a practical worldwide overview and guide to their basic characteristics, cultivation and use, issues, problems and trends. Prominence is given to environmental benefits and the importance of poplar and willow cultivation in meeting the needs of people and communities, sustainable livelihoods, land use and development.
Download or read book Costa Rican Ecosystems written by Maarten Kappelle and published by University of Chicago Press. This book was released on 2016-04-15 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1502, Christopher Columbus named Costa Rica, and while gold and silver never materialized to justify the moniker of rich coast in purely economic terms, scientists and ecotravelers alike have long appreciated its incredible wealth. Wealth in Costa Rica is best measured by its biodiversityhome to a dizzying number of plants and animals, many endemic, it s a country that has long encouraged and welcomed researchers from the world over, and is exemplary in the creation and commitment to indigenous conservation and management programs. Costa Rica is considered to have the best preserved natural resources in Latin America. Approximately nine percent (about 1,000,000 acres) of Costa Rica has been protected in 15 national parks, and a comparable amount of land is protected as wildlife refuges, forest reserves or Indian reservations. This long-awaited synthesis of Costa Rican ecosystems is an authoritative presentation of the paleoecology, biogeography, structure, conservation, and sustainable use of Costa Rica s ecosystems. It systematically covers the entire range of Costa Rica s natural and managed, terrestrial, freshwater and marine ecosystems, including its island systems (Cocos Islands), the Atlantic and Pacific oceans and shores (coasts, coral reefs, mangrove forests), its lowlands (dry, season and wet forests), its highlands (the northern volcanoes and southern Talamanca s), and its estuaries, rivers, lakes, swamps and bogs. The volume s integrated, comprehensive format will be welcomed by tropical and temperate biologists alike, by biogeographers, plant and animal ecologists, marine biologists, conservation biologists, foresters, policy-makers and all scientists, natural history specialists and all with an interest in Costa Rica s ecosystems."
Download or read book Hoofed Mammals of Alberta written by J. Brad Stelfox and published by Lone Pine Publishing. This book was released on 1993 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide to the biology, ecology, status, use and management of Alberta's hoofed mammals.
Download or read book Distribution Ecology written by Marcelo Hernán Cassini and published by Springer Science & Business Media. This book was released on 2013-03-02 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together a set of approaches to the study of individual-species ecology based on the analysis of spatial variations of abundance. Distribution ecology assumes that ecological phenomena can be understood when analyzing the extrinsic (environmental) or intrinsic (physiological constraints, population mechanisms) that correlate with this spatial variation. Ecological processes depend on geographical scales, so their analysis requires following environmental heterogeneity. At small scales, the effects of biotic factors of ecosystems are strong, while at large scales, abiotic factors such as climate, govern ecological functioning. Responses of organisms also depend on scales: at small scales, adaptations dominate, i.e. the ability of organisms to respond adaptively using habitat decision rules that maximize their fitness; at large scales, limiting traits dominate, i.e., tolerance ranges to environmental conditions.
Download or read book Bears of the World written by Vincenzo Penteriani and published by Cambridge University Press. This book was released on 2020-11-30 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bears have fascinated people since ancient times. The relationship between bears and humans dates back thousands of years, during which time we have also competed with bears for shelter and food. In modern times, bears have come under pressure through encroachment on their habitats, climate change, and illegal trade in their body parts, including the Asian bile bear market. The IUCN lists six bears as vulnerable or endangered, and even the least concern species, such as the brown bear, are at risk of extirpation in certain countries. The poaching and international trade of these most threatened populations are prohibited, but still ongoing. Covering all bears species worldwide, this beautifully illustrated volume brings together the contributions of 200 international bear experts on the ecology, conservation status, and management of the Ursidae family. It reveals the fascinating long history of interactions between humans and bears and the threats affecting these charismatic species.
Download or read book The Evolution of Social Behaviour written by Michael Taborsky and published by Cambridge University Press. This book was released on 2021-08-26 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: How can the stunning diversity of social systems and behaviours seen in nature be explained? Drawing on social evolution theory, experimental evidence and studies conducted in the field, this book outlines the fundamental principles of social evolution underlying this phenomenal richness.To succeed in the competition for resources, organisms may either 'race' to be quicker than others, 'fight' for privileged access, or 'share' their efforts and gains. The authors show how the ecology and intrinsic attributes of organisms select for each of these strategies, and how a handful of straightforward concepts explain the evolution of successful decision rules in behavioural interactions, whether among members of the same or different species. With a broad focus ranging from microorganisms to humans, this is the first book to provide students and researchers with a comprehensive account of the evolution of sociality by natural selection.
Download or read book Wildlife DNA Analysis written by Adrian Linacre and published by John Wiley & Sons. This book was released on 2013-03-27 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clearly structured throughout, the introduction highlights the different types of crime where these techniques are regularly used. This chapter includes a discussion as to who performs forensic wildlife examinations, the standardisation and validation of methods, and the role of the expert witness in this type of alleged crime. This is followed by a detailed section on the science behind DNA typing including the problems in isolating DNA from trace material and subsequent genetic analysis are also covered. The book then undertakes a comprehensive review of species testing using DNA, including a step-by-step guide to sequence comparisons. A comparison of the different markers used in species testing highlights the criteria for a genetic marker. A full set of case histories illustrates the use of the different markers used. The book details the use of genetic markers to link two or more hairs/feather/leaves/needles to the same individual organism and the software used in population assignment. The problems and possibilities in isolating markers, along with the construction of allele databases are discussed in this chapter. The book concludes with evaluation and reporting of genetic evidence in wildlife forensic science illustrated by examples of witness statements.
Download or read book Identification and Geographical Distribution of the Mosquitoes of North America North of Mexico written by Richard F. Darsie and published by . This book was released on 2016-09 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This is the identification manual for North American mosquitoes."--Choice "The essential resource for anyone concerned with mosquito control or biology."--American Reference Books Annual "A valuable resource. . . . This book is the collective product of two very competent scientists."--Journal of Medical Entomology "For the dedicated mosquito worshipper! This book is undoubtedly a must and with its beautifully illustrated keys sets a high standard to follow."--Parasitology Because of the occurrence of mosquito-borne diseases and the widespread distribution of mosquitoes as pests to humans, professionals must know how to identify them. With its wealth of information, this book is the only one of its kind available for specialists working on mosquito-borne diseases and in mosquito control units, and for introductory and advanced students who study entomology. This book updates the successful guide to North American mosquitoes published by the American Mosquito Control Association in 1981. It includes 12 new species that have since been added to the North American mosquito fauna, revised distribution maps of all species, and revised and completely illustrated identification keys for the adult females and fourth instar larvae of all 174 species and subspecies known to occur in North America, north of Mexico. Including 9 exotic species that have been introduced and today successfully thrive in North America, this book's usefulness to mosquito control programs cannot be overestimated.
Download or read book Species Concepts in Biology written by Frank E. Zachos and published by Springer. This book was released on 2016-10-05 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Frank E. Zachos offers a comprehensive review of one of today’s most important and contentious issues in biology: the species problem. After setting the stage with key background information on the topic, the book provides a brief history of species concepts from antiquity to the Modern Synthesis, followed by a discussion of the ontological status of species with a focus on the individuality thesis and potential means of reconciling it with other philosophical approaches. More than 30 different species concepts found in the literature are presented in an annotated list, and the most important ones, including the Biological, Genetic, Evolutionary and different versions of the Phylogenetic Species Concept, are discussed in more detail. Specific questions addressed include the problem of asexual and prokaryotic species, intraspecific categories like subspecies and Evolutionarily Significant Units, and a potential solution to the species problem based on a hierarchical approach that distinguishes between ontological and operational species concepts. A full chapter is dedicated to the challenge of delimiting species by means of a discrete taxonomy in a continuous world of inherently fuzzy boundaries. Further, the book outlines the practical ramifications for ecology and evolutionary biology of how we define the species category, highlighting the danger of an apples and oranges problem if what we subsume under the same name (“species”) is in actuality a variety of different entities. A succinct summary chapter, glossary and annotated list of references round out the coverage, making the book essential reading for all biologists looking for an accessible introduction to the historical, philosophical and practical dimensions of the species problem.
