Download or read book Cryptic Species of a Cascade Frog from Southeast Asia written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Elucidation of the Rana Livida Complex written by Raoul Harley Bain and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: I investigated the suspected polytypic nature of the green cascade frog, Rana livida, from southeast Asia with a multi-step approach. My initial anatomical study of specimens from Vietnam resulted in the recognition of three distinct species and five morphological groups. I tested the strength of these groupings with morphometrics and cellular DNA content analysis. Congruence among the results of morphology, morphometrics, and cellular DNA content, led me to suspect the presence of further cryptic species. I tested this hypothesis with allozyme electrophoresis, resolving 15 presumptive loci. Fixed allelic differences suggested the presence of four additional species. They also suggested that one of the new species may be two distinct species, but the evidence collected here is equivocal. I elucidated seven species of the Rana livida complex. I believe that much more cryptic diversity of this complex and other cascade ranids await discovery. This highlights the need for rigorous taxonomic and phylogenetic analyses of all cascade ranids.
Download or read book Cryptic Diversity Within the Megophrys Major Species Group Amphibia Megophryidae of the Asian Horned Frogs Phylogenetic Perspectives and a Taxonomic Revision of South Asian Taxa with Descriptions of Four New Species written by Stephen Mahoney and published by . This book was released on 2018 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Megophrys major species group (MMSG) is composed of typically medium to large sized frogs. Within the genus, it is the most geographically widespread clade ranging from the western Himalayas to southern Indochina. In this study, we examined in detail the extent of cryptic diversity within the MMSG-Indian populations based on molecular data (up to ten genes) using multigene concatenation and coalescent-based phylogenetic techniques, species delimitation analyses and extensive morphological data.Molecular evidence suggests a high level of hidden cryptic diversity within the MMSG, particularly within the M. major species complex (MMC), highlighting overlapping distributions, a case of potential mitochondrial transfer between two species, and tree topology discordance between phylogenetic methods and mitochondrial and nuclear data sets. Most analyses indicated distinct eastern and western clades in the MMC, and that the western clade may further divide into a northern and a southern subclade.A detailed taxonomic review of Indian members of the Megophrys major species group is provided. Previously undocumented complex nomenclatural issues involving known species are highlighted and resolved. Megophrys monticola is taxonomically redefined for the first time as a valid species since its synonymy with M. parva in 1893. The taxonomic status of two recently described species, Xenophrys katabhako and X. sanu are discussed in light of increased molecular and morphological sampling, and are synonymised with M. monticola. Megophrys monticola and M. robusta are redescribed based on their original type specimens and recently collected material. Megophrys major is neotypified and M. robusta lectotypified to remove prevailing nomenclatural instability. Four new large sized Indian MMC species are formally described from the Northeast Indian states of Arunachal Pradesh, Meghalaya and Nagaland, and Myanmar. All South Asian MMSG species are morphologically diagnosed from known congeners in the group. The geographic distributions of all taxa discussed are significantly redefined based on the revised taxonomy and extensive literature review. Morphological and molecular evidence suggests that Megophrys major sensu stricto might be endemic to Northeast India; M. glandulosa is formally removed from the Indian and Bhutan species checklists. Numerous misidentifications in literature are highlighted and corrected. In order to reduce future misidentifications of species reported from surrounding regions, high definition images of the holotypes of three Chinese species, M. glandulosa, M. medogensis and M. zhangi are provided for the first time, and a detailed description of Myanmar specimens of M. glandulosa is also given. This study provides the principle foundation for further research into the taxonomic status of the remaining, currently undescribed MMC taxa from Southeast Asia. Keywords: Reptilia, nomenclature, molecular systematics, integrative taxonomy, morphology, conservation, natural history"--page 3.
Download or read book Biotic Evolution and Environmental Change in Southeast Asia written by David Gower and published by Cambridge University Press. This book was released on 2012-07-19 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authoritative reviews and focused case studies on the history and future of the fauna and flora of Southeast Asia.
Download or read book Three New Species of Frogs and a New Tadpole from Eastern Thailand written by Bryan L. Stuart and published by . This book was released on 2006 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three new species of frogs from eastern Thailand are described based on old and new material. These represent a species of Megophrys from Chantaburi and Sa Kaeo Provinces, a species of Odorrana from Loei Province, and a species of Fejervarya from Ubon Ratchatani Province. Tadpoles are assigned to the new species of Megophrys and Fejervarya and to a recently described species of Rhacophorus from eastern Thailand using molecular identification.
Download or read book Vietnam A Natural History written by Eleanor Jane Sterling and published by Yale University Press. This book was released on 2008-10-01 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: A country uncommonly rich in plants, animals, and natural habitats, the Socialist Republic of Vietnam shelters a significant portion of the world’s biological diversity, including rare and unique organisms and an unusual mixture of tropical and temperate species. This book is the first comprehensive account of Vietnam’s natural history in English. Illustrated with maps, photographs, and thirty-five original watercolor illustrations, the book offers a complete tour of the country’s plants and animals along with a full discussion of the factors shaping their evolution and distribution. Separate chapters focus on northern, central, and southern Vietnam, regions that encompass tropics, subtropics, mountains, lowlands, wetland and river regions, delta and coastal areas, and offshore islands. The authors provide detailed descriptions of key natural areas to visit, where a traveler might explore limestone caves or glimpse some of the country’s twenty-seven monkey and ape species and more than 850 bird species. The book also explores the long history of humans in the country, including the impact of the Vietnam-American War on plants and animals, and describes current efforts to conserve Vietnam’s complex, fragile, and widely threatened biodiversity.
Download or read book Threatened Amphibians of the World written by S. N. Stuart and published by . This book was released on 2008 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Amphibians are facing an extinction crisis, but getting to the facts has been difficult. "Threatened Amphibians of the World" is a visual journey through the first-ever comprehensive assessment of the conservation status of the world's 6,000 known species of frogs, toads, salamanders, and caecilians. All 1,900 species known to be threatened with extinction are covered, including a description of threats to each species and an evaluation of conservation measures in place or needed. Each entry includes a photograph or illustration of the species where available, a distribution map, and detailed information on range, population and habitat and ecology. Introductory chapters present a detailed analysis of the results, complemented by a series of short essays written by many of the world's leading herpetologists. Appendices include annoted lists of lower risk species and a country-by-country listing of threatened amphibians."--pub. desc.
Download or read book Fundamentals of Conservation Biology written by Malcolm L. Hunter, Jr. and published by John Wiley & Sons. This book was released on 2021-03-09 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: FUNDAMENTALS OF CONSERVATION BIOLOGY “This book is about hope in the face of forces that would degrade our world. This book is about the rich tapestry of life that shares our world now and about how we can maintain it, sometimes in places that we protect and set aside, more often in places where we share the lands and waters with a wide range of other species.” For more than 30 years, Fundamentals of Conservation Biology has been a valued mainstay of the literature, serving both to introduce new students to this ever-changing topic, and to provide an essential resource for academics and researchers working in the discipline. In the decade since the publication of the third edition, concerns about humanity’s efforts to conserve the natural world have only grown deeper, as new threats to biodiversity continue to emerge. This fourth edition has taken into account a vast new literature, and boasts nearly a thousand new references as a result. By embracing new theory and practice and documenting many examples of both conservation successes and the hard lessons of real-world “wicked” environmental problems, Fundamentals of Conservation Biology remains a vital resource for biologists, conservationists, ecologists, environmentalists, and others.
Download or read book Zoology written by María-Dolores García and published by BoD – Books on Demand. This book was released on 2012-03-23 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book is not a classical manual on Zoology and the reader should not expect to find the usual treatment of animal groups. As a consequence, some people may feel disappointed when consulting the index, mainly if searching for something that is considered standard. But the reader, if interested in Zoology, should not be disappointed when trying to find novelties on different topics that will help to improve the knowledge on animals. This book is a compendium of contributions to some of the many different topics related to the knowledge of animals. Individual chapters represent recent contributions to Zoology illustrating the diversity of research conducted in this discipline and providing new data to be considered in future overall publications.
Download or read book Herpetology written by Laurie J. Vitt and published by Academic Press. This book was released on 2008-12-15 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: This third edition, now fully revised and updated by two of Dr. Zug's colleagues, provides herpetology students and amateur reptile and amphibian keepers with the latest taxonomy and species developments from around the world. Herpetology is a rapidly evolving field, which has contributed to new discoveries in many conceptual areas of biology. The authors build on this progress by updating all chapters with new literature, graphics, and discussions—many of which have changed our thinking.With a new emphasis placed on conservation issues, Herpetology continues to broaden the global coverage from earlier editions, recognizing the burgeoning reptile and amphibian research programs and the plight of many species in all countries and all biomes.New information on the remarkable advances in behavioral, physiological, and phylo-geographical data provide students with the current research they need to advance their education and better prepare their future in herpetology.
Download or read book Pictorial Guide to the Amphibians of North East India written by Rosamma Mathew and published by . This book was released on 2010 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Search for Genetic Structure and Patterns in Vietnamese Frogs written by Andre Da Ngo and published by . This book was released on 2008 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vietnam has the greatest biodiversity of any country in Indochina. This diversity may be due to its topographically complex nature, with hills and mountains, drained by several independent river systems, covering three quarters of its area. Topographic complexity has undoubtedly had profound effects on the flora and fauna of the region. Recent surveys have uncovered several cryptic species in what were previously considered single widespread species. These discoveries have led some researchers to propose that widespread forest species do not, in fact, exist in Southeast Asia. To test these hypotheses, I examined patterns of mitochondrial phylogeny in several groups of frogs, both at and below the species level. Additionally, these analyses helped clarify the otherwise chaotic picture of anuran taxonomy and systematics. The stream-tied waterfall frogs of the genera Amolops and Odorrana were examined, the monophyly of the ranid subfamily Amolopinae was rejected, and taxonomic adjustments were made. The phylogeny of the Vietnamese narrow-mouthed frogs of the genus Microhyla was recovered and the current taxonomy examined. Patterns of maternal dispersal and genetic differentiation in mitochondrial DNA were further examined within Microhyla heymonsi, revealing geographic structuring and the existence of two sympatric lineages. Lastly, frogs of the Polypedates leucomystax complex were examined and two major, largely sympatric lineages recovered. Within these groups, 11 separate mitochondrial lineages identified. These represented separate species on the basis of advertisement call and allozyme evidence. The relationship of genetic differentiation and river systems was also investigated and common patterns among the different groups were explored. Clear genetic breaks occurred across both the Red River and the Annamite Mountain range, though most common patterns were groupings of populations along river drainages. While several cryptic species were identified, widespread groups likely representing single species still exist, and a phylogenetic component to broad distribution were noted.
Download or read book Russian Journal of Herpetology written by and published by . This book was released on 2003 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Search for Genetic Structure and Patterns in Vietnamese Frogs written by Andre Ngo and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Threatened Freshwater Animals of Tropical East Asia written by David Dudgeon and published by Taylor & Francis. This book was released on 2022-08-04 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive account of the current state of inland waters in tropical and subtropical East Asia, exploring a series of case studies of freshwater fish, reptiles, amphibians, birds, mammals and water bodies at particular risk. The book highlights the rich freshwater biodiversity of tropical East Asia and draws attention to the various threats it faces due to human activities and rapid environmental change. It addresses the question of whether the contributions of these animals and habitats, or biodiversity in general, to ecosystem functioning and service provision provide sufficient basis for arguments supporting nature conservation. Drawing on instances from the rivers and lakes of tropical East Asia, the book also asks whether the benefits accruing from intact ecosystems are likely to be enough to ensure their preservation. If the answer to either or both these questions is ‘no’, then what are the prospects for freshwater biodiversity in rapidly changing tropical East Asia? This book will be of interest to students and scholars of biodiversity, conservation, freshwater ecology, ecosystem services and Asian Studies.
Download or read book Bulletin of the American Museum of Natural History written by Joel Asaph Allen and published by . This book was released on 2006 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprises articles on geology, paleontology, mammalogy, ornithology, entomology and anthropology.
