Download or read book Population Genetic Structure of Sea Cucumbers b che De mer in Northern Australia written by M. Gardner and published by . This book was released on 2012-06-14 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Examining Population Genetics of the Atlantic Sea Cucumber Cucumaria Frondosa Using COI and RADseq written by Matthew Steven Ambrose Penney and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Atlantic Sea Cucumber, Cucumaria frondosa (Echinodermata, Holothuria) is a suspension-feeding sea cucumber found throughout the North Atlantic. Recently, interest has emerged in developing a trawl fishery for this species in Nova Scotia, specifically on the Scotian Shelf. As new fisheries emerge in Canada, precautionary management entails examining underlying genetic structure to inform fisheries stocks. This is also important to follow international efforts from organizations such as the Convention on Biological Diversity (CBD) to characterize and manage biodiversity as a biological resource. Little is known about the population genetics of this species, including connectivity across the North Atlantic. One previous study examined genetic structure of C. frondosa in the North Atlantic using Cytochrome oxidase c subunit 1 (COI) and found evidence of minor structure between Europe and North America, but no regional structuring. When this dataset was augmented with additional individuals and sampling sites in this study, the minor structuring between continents remained, but pairwise Fst values between study sites changed. In addition, my results showed that the way DNA sequence data is trimmed can significantly redistribute haplotypes between study sites, implying the need for more standardized methodology for sequence trimming in future analyses. Regional genetic structuring between the coasts of Atlantic Canada and Iceland was re-assessed with a higher resolution method, Restriction Site-Associated DNA Sequencing (RADseq). Overall, both COI and RADseq analyses supported the hypothesis of one metapopulation of C. frondosa across the North Atlantic, with the RADseq analysis indicating that sea cucumbers off the coasts of Iceland and Atlantic Canada constituted at least two subpopulations. In addition, a minor difference between the study site in NAFO Zone 4X and the remainder of Atlantic Canada was found. Thus, there may be greater amounts of genetic structuring within Cucumaria frondosa on the Scotian Shelf than previously thought. There is also evidence that methodology (e.g. marker selection, sequence trimming, sample size) can impact the results of population genetic analyses. The results of this thesis have established a baseline of population structuring for C. frondosa in the North Atlantic, with at least two subpopulations between North America and Europe, but they also demonstrate the need for standardized methodology for trimming sequence data and even selecting appropriate markers for research questions. This will be important for further work on establishing genetic data as a biological resource and for informing long-term management of fisheries.
Download or read book Assessment of the Biology Ecology and Genetic Structure of the Sea Cucumber Cucumaria Frondosa for Management of the Fishery in the Newfoundland and Labrador Region written by Justin J. So and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Sea Cucumber Aquaculture and Management written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2003 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains current information on the status of world sea cucumber resources and use, focusing on established countries such as China, Ecuador, Indonesia, Japan, Malaysia and the Philippines, as well as relative newcomers to the sector such as Cuba, Egypt, Madagascar and Tanzania. Issues discussed include technical advances in artificial reproduction and farming of selected commercial species; and the report includes the recommendations of a FAO workshop on cucumber aquaculture and management, held in China, in October 2003.
Download or read book Asia Pacific Tropical Sea Cucumber Aquaculture written by Cathy Hair and published by Australian Centre for International Agricultural R. This book was released on 2012 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: ACIAR has provided significant, long-term research investment into tropical sea cucumber aquaculture in the Asia Pacific region.
Download or read book Elasmobranch Biodiversity Conservation and Management written by Sarah L. Fowler and published by IUCN. This book was released on 2002 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Darwin Elasmobranch Biodiversity Conservation and Management project in Sabah held a three-day international seminar that included a one-day workshop in order to highlight freshwater and coastal elasmobranch conservation issues in the region and worldwide, to disseminate the result of the project to other Malaysian states and countries, and to raise awareness of the importance of considering aspects of elasmobranch biodiversity in the context of nature conservation, commercial fisheries management, and for subsistence fishing communities. These proceedings contain numerous peer-reviewed papers originally presented at the seminar, which cover a wide range of topics, with particular reference to species from freshwater and estuarine habitats. The workshop served to develop recommendations concerning the future prospects of elasmobranch fisheries, biodiversity, conservation and management. This paper records those conclusions, which highlight the importance of elasmobranchs as top marine predators and keystone species, noting that permanent damage to shark and ray populations are likely to have serious and unexpected negative consequences for commercial and subsistence yields of other important fish stocks.
Download or read book Neglected Crops written by J. Esteban Hernández Bermejo and published by Food & Agriculture Org.. This book was released on 1994 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: About neglected crops of the American continent. Published in collaboration with the Botanical Garden of Cord�ba (Spain) as part of the Etnobot�nica92 Programme (Andalusia, 1992)
Download or read book Oceanography and Marine Biology An Annual Review Volume 40 written by R. N. Gibson and published by CRC Press. This book was released on 2002-08-29 with total page 693 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in oceanography and marine biology and its relevance to global environmental issues continues to increase, creating a demand for authoritative reviews that summarize recent research. Oceanography and Marine Biology: An Annual Review has catered to this demand since its foundation, by the late Harold Barnes, more than 40 years ago. It is an
Download or read book Australian Echinoderms written by Timothy O'Hara and published by CSIRO PUBLISHING. This book was released on 2017-06 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: Echinoderms, including feather stars, seastars, brittle stars, sea urchins and sea cucumbers, are some of the most beautiful and interesting animals in the sea. They play an important ecological role and several species of sea urchins and sea cucumbers form the basis of important fisheries. Over 1000 species live in Australian waters, from the shoreline to the depths of the abyssal plain and the tropics to Antarctic waters. Australian Echinoderms is an authoritative account of Australia’s 110 families of echinoderms. It brings together in a single volume comprehensive information on the identification, biology, evolution, ecology and management of these animals for the first time. Richly illustrated with beautiful photographs and written in an accessible style, Australian Echinoderms suits the needs of marine enthusiasts, academics and fisheries managers both in Australia and other geographical areas where echinoderms are studied.
Download or read book Macassan History and Heritage written by Marshall Clark and published by ANU E Press. This book was released on 2013-06-01 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents inter-disciplinary perspectives on the maritime journeys of the Macassan trepangers who sailed in fleets of wooden sailing vessels known as praus from the port city of Makassar in southern Sulawesi to the northern Australian coastline. These voyages date back to at least the 1700s and there is new evidence to suggest that the Macassan praus were visiting northern Australia even earlier. This book examines the Macassan journeys to and from Australia, their encounters with Indigenous communities in the north, as well as the ongoing social and cultural impact of these connections, both in Indonesia and Australia.
Download or read book The Second World Ocean Assessment written by United Nations Publications and published by UN. This book was released on 2021-09-22 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In its resolutions 57/141 and 58/240, the General Assembly decided to establish a regular process under the United Nations for global reporting and assessment of the state of the marine environment, including socioeconomic aspects, both current and foreseeable, building on existing regional assessments. In its resolution 71/257, the Assembly recalled that the scope of the first cycle of the Regular Process focused on establishing a baseline and decided that the scope of the second cycle would extend to evaluating trends and identifying gaps. The programme of work for the period 2017-2020 of the second cycle of the Regular Process includes the preparation by the Group of Experts of the Regular Process for Global Reporting and Assessment of the State of the Marine Environment, including Socioeconomic Aspects, of the second World Ocean Assessment, building on the baselines established by the First Global Integrated Marine Assessment (first World Ocean Assessment). In its resolution 72/73, the Assembly decided that the Group of Experts should proceed on the basis of a single comprehensive assessment. The present document was prepared by the Group of Experts in accordance with those decisions"--Summary.
Download or read book Through the Language Glass written by Guy Deutscher and published by Metropolitan Books. This book was released on 2010-08-31 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: A masterpiece of linguistics scholarship, at once erudite and entertaining, confronts the thorny question of how—and whether—culture shapes language and language, culture Linguistics has long shied away from claiming any link between a language and the culture of its speakers: too much simplistic (even bigoted) chatter about the romance of Italian and the goose-stepping orderliness of German has made serious thinkers wary of the entire subject. But now, acclaimed linguist Guy Deutscher has dared to reopen the issue. Can culture influence language—and vice versa? Can different languages lead their speakers to different thoughts? Could our experience of the world depend on whether our language has a word for "blue"? Challenging the consensus that the fundaments of language are hard-wired in our genes and thus universal, Deutscher argues that the answer to all these questions is—yes. In thrilling fashion, he takes us from Homer to Darwin, from Yale to the Amazon, from how to name the rainbow to why Russian water—a "she"—becomes a "he" once you dip a tea bag into her, demonstrating that language does in fact reflect culture in ways that are anything but trivial. Audacious, delightful, and field-changing, Through the Language Glass is a classic of intellectual discovery.
Download or read book Cold water Coral Reefs written by André Freiwald and published by United Nations Environment Programme. This book was released on 2004 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dated June 2004
Download or read book Cold Water Corals and Ecosystems written by André Freiwald and published by Springer Science & Business Media. This book was released on 2006-01-17 with total page 1242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cold-water coral ecosystems figure the formation of large seabed structures such as reefs and giant carbonate mounds; they represent unexplored paleo-environmental archives of earth history. Like their tropical cousins, cold-water coral ecosystems harbour rich species diversity. For this volume, key institutions in cold-water coral research have contributed 62 state-of-the-art articles on topics from geology and oceanography to biology and conservation, with some impressive underwater images.
Download or read book Missouri Landscapes written by Jon L. Hawker and published by . This book was released on 1992 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In this magnificent book, Oliver Schuchard provides more than sixty-five exquisite black-and-white photographs spanning his thirty-eight years of photography. In addition, he explains the aesthetic rationale and techniques he used in order to produce these photographs, emphasizing the profound differences between, yet necessary interdependence of, craft and content. Although Schuchard believes that craft is important, he maintains that the idea behind the photograph and the emotional content of the image are equally vital and are, in fact, functions of one another. The author also shares components of his life experience that he believes helped shape his development as an artist and a teacher. He chose the splendid photographs included in this book from among nearly 5,000 negatives that had been exposed all over the world, from Missouri to Maine, California, Alaska, Colorado, France, Newfoundland, and Hawaii, among many other locations. Approximately 250 negatives survived the initial review, and each of those was printed before a final decision was made on which photographs were to be featured in the book. The final choices are representative of Schuchard's work and serve to substantiate his belief that craft, concept, and self must be fully understood and carefully melded for a good photograph to occur. This amazing work by award-winning photographer Oliver Schuchard will be treasured by professional and amateur photographers alike, as well as by anyone who simply enjoys superb photography."--Publishers website.
Download or read book The Marine Fauna of New Zealand written by Helen E. S. Clark and published by . This book was released on 2000 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Advocate written by and published by . This book was released on 2001-08-14 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advocate is a lesbian, gay, bisexual, transgender (LGBT) monthly newsmagazine. Established in 1967, it is the oldest continuing LGBT publication in the United States.
