Laying the Genetic Foundation for the Conservation of Longhorn Fairy Shrimp PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Laying the Genetic Foundation for the Conservation of Longhorn Fairy Shrimp PDF full book. Access full book title Laying the Genetic Foundation for the Conservation of Longhorn Fairy Shrimp by Brendan Calhoun Kyle. Download full books in PDF and EPUB format.
Author: Brendan Calhoun Kyle
Publisher:
ISBN:
Category : Anostraca
Languages : en
Pages : 0
Get Book Here
Book Description
Wetlands are rapidly being lost from human impacts, and in California the effects are especially dramatic. Sensitive wetland habitats, like vernal pools, are at risk of being lost. Vernal pools are home to many endemic species, so the conservation of vernal pools is critical to maintaining California's biodiversity. Understanding the ecological, physiological, and genetic aspects of a species is important when implementing critical management for the persistence of endangered species. The longhorn fairy shrimp, Branchinecta longiantenna, is one of several endemic and endangered inhabitants of California's vernal pools. Longhorn fairy shrimp distribution is quite restricted, they are found in only three regions of California (Altamont Pass, Kesterson National Wildlife Refuge, and Carrizo Plains). Little is known about their ecology, physiology, and genetics. My research aimed to establish a framework of our genetic understanding of longhorn fairy shrimp throughout its range. I analyzed population genomic data for samples collected from each region to determine population structure and variation. I found evidence for phylogeographic structure associated with isolated regions from pairwise estimates of population differentiation, principal component analysis, and phylogenetics. Differentiation within regions was generally low, but much higher at Altamont Pass, which is likely due to differences in population size and dispersal. This is also reflected in levels of heterozygosity, which were much lower in the Altamont Pass pool than any other. These differences stress that management programs should use evolutionary significant units that distinguish longhorn fairy shrimp by their respective regions when developing conservation plans for this species.
Author: Brendan Calhoun Kyle
Publisher:
ISBN:
Category : Anostraca
Languages : en
Pages : 0
Get Book Here
Book Description
Wetlands are rapidly being lost from human impacts, and in California the effects are especially dramatic. Sensitive wetland habitats, like vernal pools, are at risk of being lost. Vernal pools are home to many endemic species, so the conservation of vernal pools is critical to maintaining California's biodiversity. Understanding the ecological, physiological, and genetic aspects of a species is important when implementing critical management for the persistence of endangered species. The longhorn fairy shrimp, Branchinecta longiantenna, is one of several endemic and endangered inhabitants of California's vernal pools. Longhorn fairy shrimp distribution is quite restricted, they are found in only three regions of California (Altamont Pass, Kesterson National Wildlife Refuge, and Carrizo Plains). Little is known about their ecology, physiology, and genetics. My research aimed to establish a framework of our genetic understanding of longhorn fairy shrimp throughout its range. I analyzed population genomic data for samples collected from each region to determine population structure and variation. I found evidence for phylogeographic structure associated with isolated regions from pairwise estimates of population differentiation, principal component analysis, and phylogenetics. Differentiation within regions was generally low, but much higher at Altamont Pass, which is likely due to differences in population size and dispersal. This is also reflected in levels of heterozygosity, which were much lower in the Altamont Pass pool than any other. These differences stress that management programs should use evolutionary significant units that distinguish longhorn fairy shrimp by their respective regions when developing conservation plans for this species.
Author: Bohonak, Andrew J.
Publisher:
ISBN:
Category : Biodiversity conservation
Languages : en
Pages : 10
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 81
Get Book Here
Book Description
Population genetic data are becoming an increasingly important tool in the conservation and management of endangered species. Statistical analysis of genetic data can inform agencies on population boundaries within a species, and help to infer processes that lead to genetic patterns, thereby influencing conservation decisions. This thesis examines population genetics in the endangered San Diego fairy shrimp, Branchinecta sandiegonensis, using multiple molecular markers. In order to quantify diversity and population structure, genetic data were collected from 50 pools from 23 pool complexes scattered throughout San Diego County at seven novel microsatellite loci. We tested the hypothesis that pool complex boundaries and geographic distance are important components of genetic structure. Microsatellite and mtDNA genetic patterns were compared to test for concordance between marker types. We also conducted preliminary tests for the effect of pool disturbance and hybridization on genetic diversity. Overall, results show that there is considerable microsatellite diversity within pools. In the preliminary tests, no significant change in genetic diversity in response to hybridization was detected. Disturbance may affect genetic diversity within pools, but it is unclear which component of disturbance is correlated with diversity. Overall, genetic differentiation among pool complexes is relatively strong. The hierarchical spatial arrangement of pools plays a significant role in genetic divergence among populations. Increasing geographic distances between sites is a significant gene flow barrier for this species, as has been found for other fairy shrimp species. Evidence of historical isolation between two divergent groups was also found. There is concordance among marker types, with some discrepancies. Population genetic structure in B. sandiegonensis across the study range is governed by gene flow restricted primarily to pool complexes. We recommend that pool complexes be treated as management units provided that pools are ecologically similar within them. Historical divergence among groups of pools should be taken into account as well, in order to maintain genetic variation and dispersal mechanisms across the species' range.
Author: Marie A. Simovich
Publisher: Springer
ISBN: 9789048150014
Category : Science
Languages : en
Pages : 0
Get Book Here
Book Description
This volume is a collection of papers concerning the biology of large branchiopod crustaceans: Anostraca, Conchostraca, and Notostraca. Many of the individual papers were first presented at the Third International Large Branchiopod Symposium (ILBS-3) held at the University of San Diego, CA, USA, July 15-18, 1996. Contributions on additional topics from participants at the symposium, and from colleagues not able to join us in San Diego, are also included. In addition, there is a supplement to the 1995 `Checklist of the Anostraca'. The theme of the ILBS-3 was `understanding and conserving large branchiopod diversity'. Researchers from around the world presented papers on a variety of topics related to conservation of large branchiopods, with contributions ranging from alpha-taxonomy and zoogeography to community structure and studies of ecology and evolution. One important issue developed in many of the papers in this volume is the need to advance our understanding of basic aspects of branchiopod biology throughout the world in order to enhance our efforts to conserve them. Although we have made important strides in understanding the biology of large branchiopods, we have, with few notable exceptions, made little progress in assuring the conservation of their diversity. We hope this volume will supply the reader with new ideas, and generate enthusiasm for research and public education efforts on behalf of branchiopod conservation.
Author: Clyde H. Eriksen
Publisher:
ISBN: 9780916422837
Category : Branchinecta
Languages : en
Pages : 196
Get Book Here
Book Description
Author: John M. Melack
Publisher: Springer Science & Business Media
ISBN: 9781402005671
Category : Nature
Languages : en
Pages : 362
Get Book Here
Book Description
Publications from 7th International Conference on Salt Lakes, held in Death Valley National Park, California, USA, September 1999
Author: Linda Civitello
Publisher: John Wiley & Sons
ISBN: 0470403713
Category : Cooking
Languages : en
Pages : 448
Get Book Here
Book Description
An illuminating account of how history shapes our diets—now in a new revised and updated Third Edition Why did the ancient Romans believe cinnamon grew in swamps guarded by giant killer bats? How did African cultures imported by slavery influence cooking in the American South? What does the 700-seat McDonald's in Beijing serve in the age of globalization? With the answers to these and many more such questions, Cuisine and Culture, Third Edition presents an engaging, entertaining, and informative exploration of the interactions among history, culture, and food. From prehistory and the earliest societies in the Fertile Crescent to today's celebrity chefs, Cuisine and Culture, Third Edition presents a multicultural and multiethnic approach to understanding how and why major historical events have affected and defined the culinary traditions in different societies. Now revised and updated, this Third Edition is more comprehensive and insightful than ever before. Covers prehistory through the present day—from the discovery of fire to the emergence of television cooking shows Explores how history, culture, politics, sociology, and religion have determined how and what people have eaten through the ages Includes a sampling of recipes and menus from different historical periods and cultures Features French and Italian pronunciation guides, a chronology of food books and cookbooks of historical importance, and an extensive bibliography Includes all-new content on technology, food marketing, celebrity chefs and cooking television shows, and Canadian cuisine. Complete with revealing historical photographs and illustrations, Cuisine and Culture is an essential introduction to food history for students, history buffs, and food lovers.
Author: Harriet V. Kuhnlein
Publisher: Fao
ISBN:
Category : Business & Economics
Languages : en
Pages : 396
Get Book Here
Book Description
Today, globalisation and homogenisation have replaced local food cultures. The 12 case studies presented in this book show the wealth of knowledge in indigenous communities in diverse ecosystems, the richness of their food resources, the inherent strengths of the local traditional food systems, how people think about and use these foods, the influx of industrial and purchased food, and the circumstances of the nutrition transition in indigenous communities. The unique styles of conceptualising food systems and writing about them were preserved. Photographs and tables accompany each chapter.
Author: Stephen C. Trombulak
Publisher: Springer Science & Business Media
ISBN: 9048195756
Category : Science
Languages : en
Pages : 433
Get Book Here
Book Description
Hugh P. Possingham Landscape-scale conservation planning is coming of age. In the last couple of decades, conservation practitioners, working at all levels of governance and all spatial scales, have embraced the CARE principles of conservation planning – Comprehensiveness, Adequacy, Representativeness, and Efficiency. Hundreds of papers have been written on this theme, and several different kinds of software program have been developed and used around the world, making conservation planning based on these principles global in its reach and influence. Does this mean that all the science of conservation planning is over – that the discovery phase has been replaced by an engineering phase as we move from defining the rules to implementing them in the landscape? This book and the continuing growth in the literature suggest that the answer to this question is most definitely ‘no. ’ All of applied conservation can be wrapped up into a single sentence: what should be done (the action), in what place, at what time, using what mechanism, and for what outcome (the objective). It all seems pretty simple – what, where, when, how and why. However stating a problem does not mean it is easy to solve.
Author: Alessandro Minelli
Publisher: Springer Science & Business Media
ISBN: 3642361609
Category : Science
Languages : en
Pages : 530
Get Book Here
Book Description
More than two thirds of all living organisms described to date belong to the phylum Arthropoda. But their diversity, as measured in terms of species number, is also accompanied by an amazing disparity in terms of body form, developmental processes, and adaptations to every inhabitable place on Earth, from the deepest marine abysses to the earth surface and the air. The Arthropoda also include one of the most fashionable and extensively studied of all model organisms, the fruit-fly, whose name is not only linked forever to Mendelian and population genetics, but has more recently come back to centre stage as one of the most important and more extensively investigated models in developmental genetics. This approach has completely changed our appreciation of some of the most characteristic traits of arthropods as are the origin and evolution of segments, their regional and individual specialization, and the origin and evolution of the appendages. At approximately the same time as developmental genetics was eventually turning into the major agent in the birth of evolutionary developmental biology (evo-devo), molecular phylogenetics was challenging the traditional views on arthropod phylogeny, including the relationships among the four major groups: insects, crustaceans, myriapods, and chelicerates. In the meantime, palaeontology was revealing an amazing number of extinct forms that on the one side have contributed to a radical revisitation of arthropod phylogeny, but on the other have provided evidence of a previously unexpected disparity of arthropod and arthropod-like forms that often challenge a clear-cut delimitation of the phylum.
