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Thursday, May 7, 2020 | History

1 edition of Genetic improvement of cultured Pacific oysters by selection found in the catalog.

Genetic improvement of cultured Pacific oysters by selection

Genetic improvement of cultured Pacific oysters by selection

1996 Coastal Marine Experiment Station Annual Report

  • 366 Want to read
  • 38 Currently reading

Published by Agricultural Experiment Station, Oregon State University in [Corvalis, OR?] .
Written in English

    Subjects:
  • Oysters -- Genetics.,
  • Oyster culture.

  • Edition Notes

    StatementDennis Hedgecock ... [et al.].
    SeriesSpecial report -- 968., Special report (Oregon State University. Agricultural Experiment Station) -- 968.
    ContributionsHedgecock, Dennis.
    The Physical Object
    Pagination40 p. :
    Number of Pages40
    ID Numbers
    Open LibraryOL15569688M

    The Pacific oyster (Crassostrea gigas) is one of the most important farmed oysters worldwide. Through successive family selection, four shell color variants (white, golden, black and partially pigmented) of C. gigas have been developed. To elucidate the genetic mechanisms of shell coloration in by:   We constructed male and female consensus linkage maps for the Pacific oyster Crassostrea gigas, using a total of microsatellite DNA markers typed in day-old larvae from three families. We identified 11 and 12 linkage groups in the male and female consensus maps, respectively. Alignment of these separate maps, however, suggests 10 linkage groups, which agrees with the Cited by:

      Genetic improvement of production traits in aquaculture has great potential to help meet the rising seafood demands driven by human population growth. .   Oyster is rich in glycogen and free amino acids and is called “the milk of sea”. To understand the main genetic effects of these traits and the genetic networks underlying their correlation, we have conducted the whole genome resequencing with oysters collected from the world-wide scale. After association analysis, clustered significant single nucleotide polymorphism (SNP) loci Cited by: 1.

    The commercial production of triploid Pacific oysters (Crassostrea gigas) has grown rapidly in recent years. There is now a push to move away from commonly used mass spawning techniques towards single pair cross selective breeding programs in an effort to improve growth and disease resistance within the triploid product. Before this can be achieved, there is a need to understand some of the Author: PA Miller. Although triploids have been developed in several oyster species, including Eastern oysters, C. virginica, Sydney rock oysters, Saccostrea glomerata, and European flat oysters Ostrea Edulis, triploid oysters are only commercially produced for the Pacific oyster by mating tetraploid and diploid oysters (Guo et al., ; Nell, ).Cited by: 7.


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Genetic improvement of cultured Pacific oysters by selection Download PDF EPUB FB2

Administrative Report Or Publication Genetic improvement of cultured Pacific oysters by selection: Coastal Marine Experiment Station Annual Report Public Deposited AnalyticsAuthor: Dennis Hedgecock. Genetic improvement of cultured Pacific oysters by selection: Coastal Marine Experiment Station Annual Report.

Abstract. Published January Facts and recommendations in this publication may no longer be valid. Topics: Oysters -- Genetics., Oyster culture.

The recent development of Pacific oyster (Crassostrea gigas) SNP genotyping arrays has allowed detailed characterisation of genetic diversity and population structure within and between oyster also raises the potential of harnessing genomic selection for genetic improvement in oyster breeding programmes.

Genetic selection and systematic breeding in Pacific oyster culture.,4quaculture, Oyster culture in the Pacific Northwest has seen many technological improvements in the past 5 years, Among the most important of these improvements are the ones that have made possible an increased reliance on hatchery-produced by: Hedgecock D, Langdon C, Blouin M, Allen SK () Genetic improvement of cultured Pacific oysters by selection.

Special ReportCoastal Marine Experiment Station, Hatfield Marine Science Center, Oregon State University Google ScholarCited by: 2. Yields of cultured Pacific oysters Crassostrea gigas Thunberg improved after one generation of selection Article in Aquaculture () April with Reads How we measure 'reads'.

The Pacific oyster (Crassostrea gigas) industry in Australia is now almost entirely hatcherybased, and thus able to benefit substantially from a genetic improvement program (Ward et al., The positive response to selection for live weight yields estimated in this study indicated that long-term selection should result in greater yields of Pacific oysters.

Response to selection ranged from % to % improvement in yields of families from selected broodstock Cited by:   The Pacific oyster (Crassostrea gigas) is one of the most important oysters cultured worldwide. To analyze the oyster genome and dissect growth-related traits, we constructed a sex-averaged linkage map by combining 64 genomic simple sequence repeats, 42 expressed sequence tag-derived SSRs, and amplified fragment length polymorphism markers in an F1 full-sib by: Oyster culture is one of the most significant bivalve aquaculture industries world-wide.

While Pacific oysters may be populations of the same species, possibly resulting in a genetic shift in the local population and a loss of genetic diversity. The Pacific oyster Crassostrea gigas belongs to one of the most species-rich but genomically poorly explored phyla, the Mollusca.

Here we report the sequencing and assembly of the oyster genome Cited by: A genetic improvement programme was recently started for Pacific oysters, Crassostrea gigas, in Australia (Ward et al., ). This followed demonstrations that little genetic diversity had been lost since the Pacific oyster industry was founded in Australia with.

Variants of the Ostreid herpesvirus 1 (OsHV-1) cause high losses of Pacific oysters globally, including in Tomales Bay, California, USA. A suite of new variants, the OsHV-1 microvariants (μvars), cause very high mortalities of Pacific oysters in major oyster-growing regions outside of the United States.

There are currently no known Pacific oysters in the United States that are resistant to Author: Konstantin Divilov, Blaine Schoolfield, Benjamin Morga, Lionel Dégremont, Colleen A.

Burge, Daniel M. The Australian national Pacific Oyster selective breeding program commenced in ; however, inafter six generations of breeding, limitations to the breeding strategy became apparent. These limitations included a lack of understanding of which genetic traits to select and led to a need to develop and implement a breeding strategy that.

Family effect on cultured pearl quality in black-lipped pearl oyster Pinctada margaritifera and insights for genetic improvement Chin-Long Ky 1 a, Carole Blay 1, Manaarii Sham-Koua 1, Vincent Vanaa 1, Cédrik Lo 3 and Philippe Cabral 2Cited by: Ten polymorphic microsatellite loci were multiplexed to analyze a total of Pacific oysters (Crassostrea gigas) sampled from native (Japan and Korea), naturalized (France and Australia), and cultured (3 Australian programs) populations.

Genetic diversity was high within the native and naturalized populations (average allelic richness, ; expected heterozygosity, ), but lower. In France, two main diseases threaten Pacific oyster production. SinceCrassostrea gigas spat have suffered massive losses due to the ostreid herpesvirus OsHV-1, and sincesignificant mortalities in commercial-size adults have been related to infection by the bacterium Vibrio aestuarianus.

The genetic basis for resistance to V. aestuarianus and OsHV-1 and the nature of the genetic Cited by: Selection for live weight of Pacific oysters showed improvements ranging from % to % compared to the wild stock.

Sydney-rock oysters (Saccostrea commercialis) showed a 4% increase after one generation and a 15% increase after two generations. A 16% to 39% increase in growth rate was found after one generation of mass selection in the eastern oyster, C.

virginica and a 21% to 42% increase in growth rate of the European flat oyster, O. edulis, compared with non-selected controls. Progress 01/01/97 to 12/01/97 Outputs As part of a large selection program for farmed Pacific oysters initiated by collaborators at Oregon State University inwe analyzed genetic markers in the founding brood stocks to document genetic variation in the base population and to confirm parentage of families.

At BML, crosses among inbred lines were made for ongoing study of. Goals / Objectives The objective of this cooperative research project is to elucidate the genetic architecture underlying economically important traits in cultured Pacific oysters (Crassistrea gigas) and to use this information to develop marker-assisted selection technology that enhances broodstock development with improved characteristics such as growth rate, reproduction, survival, disease .1st oyster producer in Europe Before 15‐30% mortality in spat each year Since massive summer mortality in spat (70‐90%) 2 Occurence of a new OHsV‐1 µvar herpes virus variant Pacific Oyster Mortality Syndrom(POMS) MOREST program () raises the possibility of improvement by genetic selection.Chapter 2: Genetic diversity of cultured, naturalized and native Pacific oysters Crassostrea gigas determined from multiplexed microsatellite markers 20 Introduction 20 Materials and methods 23 Sample collection and DNA extraction 23 Microsatellite analysis and PCR conditions 24 Data analysis