Download or read book An Analysis of Genetic Diversity in Atlantic Herring Clupea Harengus L Off the Irish Coast Using Microsatellite DNA Markers written by Linda Elizabeth Sullivan and published by . This book was released on 2006 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 2006 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic and Morphometric Analyses of Atlantic Herring Clupea Harengus L Stocks to the West of the British Isles with Particular Reference to the North Irish Sea written by David Patrick Francis King and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adaptive and Neutral Genetic Variation in Spring and Fall spawning Herring Clupea Harengus L in the Northwest Atlantic written by Angela Patricia Fuentes Pardo and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the factors influencing the spatial distribution of intraspecific diversity is both a fundamental goal in evolutionary biology and necessary for the design of robust management strategies for harvested species. Intraspecific diversity can now be assessed using novel genomic techniques that enable the high-density screening of neutral and adaptive genetic variation. In this thesis, I used whole-genome resequencing of pooled DNA of Atlantic herring (Clupea harengus) to (i) identify patterns, genomic regions, evolutionary processes and environmental variables involved in the origin and maintenance of population divergence and local adaptation in the northwest Atlantic, and (ii) develop a diagnostic genetic tool that can inform conservation and fisheries management. I found fine-scale population structure in herring at putatively adaptive loci, despite low differentiation at neutrally evolving loci. Populations were distinguishable by spawning time and along a latitudinal cline defined by winter sea-surface temperature. Divergent selection leading to adaptation to seasonal reproduction and spawning at different latitudes is likely maintaining molecular divergence patterns for these traits in this environment. Each pattern was underpinned by thousands of outlier SNPs distributed in specific genomic regions spanning several candidate genes, some with a known role in the timing of reproduction (i.e. TSHR). Many spawning time-associated SNPs were shared with populations across the ocean, suggesting such adaptation predates the last glacial maximum. Finally, I developed and evaluated the efficacy of two cost-effective SNP-panels diagnostic of spawning season and latitudinal origin. Individual genotypes at these loci confirmed temporal stability of genetic differences among northern populations and between reproductive strategies despite their mixing outside of the spawning season, suggesting spawning time and site fidelity in ecological time scales. Admixture between reproductive and latitudinal components is unrestricted, and the proportion of admixed individuals vary across aggregations. Some individuals with intermediate admixture levels spawned in either season, suggesting that spawning time is not completely fixed. The analysis of mixture samples revealed the dynamic composition of aggregations outside of the breeding season and demonstrated the utility of the SNP-panels for mixed stock assessment. Altogether, these results contribute to the hypothesis that selection influences spatial distributions of genetic variation, highlighting the need to manage or conserve ecologically important adaptive variation in nature.
Download or read book Genetic and Morphometric Analyses of Atlantic Herring Clupea Harengus L Stocks to the West of the British Isles with Particular Reference to the North Sea written by D. P. F. King and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development and Use of Microsatellite DNA Markers from Fundulus Heteroclitus as a Method of Measuring Genetic Diversity and Ecological Impact in Polluted Areas of Long Island Sound written by James Edward Goldmeyer and published by . This book was released on 2005 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tracing Populations of Atlantic Herring Clupea Harengus L in the Irish and Celtic Seas Using Otolith Chemistry and Increment Analyses written by Deirdre E. Brophy and published by . This book was released on 2002 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Using Ancient MtDNA to Track Temporal Genetic Changes of Pacific Herring Populations in the Central Coast of British Columbia written by Melissa Michelle Roth and published by . This book was released on 2015 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific herring (Clupea pallasi) are an important species of marine ecosystems, and to Coastal First Nations. Herring are now in decline across the Northeast Pacific, but there is much debate on the nature of this decline and its potential impacts on biological diversity of the species. This research project takes an in-depth look at mitochondrial DNA (mtDNA) of ancient herring bones recovered from stratified midden deposits at Namu, British Columbia to document changes in genetic diversity through time (7000 - 100 BP), and to explore the possibility of identifying region-specific herring populations. This study processed 60 samples with a success rate of 83.3% for mtDNA sequence analysis. Our data show that ancient DNA is generally well preserved in ancient herring remains as old as 7000BP, demonstrating the potential for retrieving genetic information about herring of the past. However, our mtDNA (D-loop and cytb) markers proved to be less informative in revealing changes of population diversity. Nuclear DNA markers and next generation sequencing technology are expected to make good use of the recovered herring DNA to better reconstruct natural history in the region.
Download or read book Genetic Diversity of Pacific Herring Clupea Pallasi Measured Using the Randomly Amplified Polymorphic DNA polymerase Chain Reaction written by Lee W. Ott and published by . This book was released on 2001 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Structure of Atlantic Herring Clupea Harengus L in the Northeast Atlantic Using Phenotypic and Molecular Approaches written by Cemal Turan and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Temporal Trends in Genetic Diversity Within a Northern Pike Population And Estimates of Effective Population Size Based on Microsatellite DNA Data written by Loren Michael Miller and published by . This book was released on 1996 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gene Expression Analysis in Atlantic Herring Clupea Harengus in Response to Temperature and CO2 written by Luisa Listmann and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diversity and Population Structure of Pacific Herring Clupea Pallasi Along the Northwest Coast written by Eleni Leto Petrou and published by . This book was released on 2019 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forage fish are key trophic links in coastal ecosystems, transferring energy from lower to higher trophic levels. In the Pacific Northwest, herring are one of the most abundant forage fish species and are prey for a wide variety or organisms. Additionally, human inhabitants of the region have used herring as a food resource for millennia, and archaeological research has demonstrated that herring bones are among the most abundant fish remains unearthed from ancient village sites. Given the importance of herring to the coastal ecosystem and human livelihoods, there is considerable interest in sustainably managing the fisheries which target this species. However, management is complicated by limited knowledge of herring population structure and a lack of long-term temporal data on population diversity. In this dissertation, I (i) develop a laboratory protocol to remove intraspecific contamination from tissues that is compatible with restriction site-associated sequencing, (ii) investigate the mechanisms driving genetic differentiation between herring populations, using genomic data collected from wild spawning aggregations, and (iii) quantify the relative contributions of genetically distinct herring populations to food supplies over the last millennium, using ancient DNA extracted from herring bones.
Download or read book The Norwegian Sea Ecosystem written by Hein Rune Skjoldal and published by Fagbokforlaget. This book was released on 2004 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'The Norwegian Sea Ecosystem' elucidates the interaction between the different ecological compartments of the area, with special emphasis on the most important pelagic fish stocks. It deals with mechanisms for ecosystem variability and discusses the challenge of an ecosystem approach to managing the area.
Download or read book Elemental Analysis of Adult Atlantic Herring Clupea Harengus L Otoliths written by Shelley K. Denny and published by . This book was released on 2005 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Morphometric Discrimination of Atlantic Herring Clupea Harengus in the Northwestern Atlantic Ocean written by Karen L. Bolles and published by . This book was released on 2006 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The State of the World s Aquatic Genetic Resources for Food and Agriculture written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2019-07-24 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conservation, sustainable use and development of aquatic genetic resources (AqGR) is critical to the future supply of fish. The State of the World’s Aquatic Genetic Resources for Food and Agriculture is the first ever global assessment of these resources, with the scope of this first Report being limited to cultured AqGR and their wild relatives, within national jurisdiction. The Report draws on 92 reports from FAO member countries and five specially commissioned thematic background studies. The reporting countries are responsible for 96 percent of global aquaculture production. The Report sets the context with a review of the state of world’s aquaculture and fisheries and includes overviews of the uses and exchanges of AqGR, the drivers and trends impacting AqGR and the extent of ex situ and in situ conservation efforts. The Report also investigates the roles of stakeholders in AqGR and the levels of activity in research, education, training and extension, and reviews national policies and the levels of regional and international cooperation on AqGR. Finally, needs and challenges are assessed in the context of the findings from the data collected from the countries. The Report represents a snapshot of the present status of AqGR and forms a valuable technical reference document, particularly where it presents standardized key terminology and concepts.
