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Reproductive Success In Hatchery Produced Eastern Oyster Crassostrea Virginica Gmelin
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Book Synopsis Reproductive Success in Hatchery-produced Eastern Oyster, Crassostrea Virginica (gmelin) by : April Piggott
Download or read book Reproductive Success in Hatchery-produced Eastern Oyster, Crassostrea Virginica (gmelin) written by April Piggott and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The eastern oyster (Crassostrea virginica Gmelin 1791) has great ecological and economic importance but populations have declined, especially in Chesapeake Bay, to historically low numbers. Hatcheries strive to produce oysters with beneficial characteristics for supplementation and commercial purposes, both natural and stimulated mass spawning. Unequal contribution of parents in mass spawnings potentially can lead to high levels of inbreeding and a loss of beneficial characteristics in offspring. In this study, we determined microsatellite genotypes for parents (n^parents =24, 49, and 77 parents) and progeny (n=96 each) of three hatchery-produced families and used the data for parental assignment. We observed the presence of more than two alleles per locus for some offspring, yet because genetic analysis software only allows for a maximum of two alleles per locus, we chose the two alleles with the strongest signals. For the three parent "populations" 71% of alleles had frequencies of 0.05 and observed heterozygosities were lower than expected by an average factor of 0.27. Inbreeding within the various parent populations was similar across the three families ranging from F^IS 0.26 - 0.43. In all three families, the offspring exhibited greater levels of genetic diversity and lower inbreeding levels than the parents (F^IS 0.14-0.21), and in some cases offspring exhibited alleles that were not present in the parents. Variance in the number of offspring produced per parent was observed for all families and in general,
Book Synopsis The Reproductive System of the American Oyster, Crassostrea Virginica (Gmelin) by : Austina Kennedy
Download or read book The Reproductive System of the American Oyster, Crassostrea Virginica (Gmelin) written by Austina Kennedy and published by . This book was released on 1963 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Reproductive Cycle of the Oyster Crassostrea Virginica (Gmelin) in the Apalachicola Bay, Florida by : Irma Olguin-Espinoza
Download or read book The Reproductive Cycle of the Oyster Crassostrea Virginica (Gmelin) in the Apalachicola Bay, Florida written by Irma Olguin-Espinoza and published by . This book was released on 1987 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molluscan shellfish research and management by :
Download or read book Molluscan shellfish research and management written by and published by . This book was released on 2004 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis POPULATION GENETICS OF EASTERN OYSTER Crassostrea Virginica RESTORATION IN THE CHESPEAKE BAY by :
Download or read book POPULATION GENETICS OF EASTERN OYSTER Crassostrea Virginica RESTORATION IN THE CHESPEAKE BAY written by and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The strategic release of captive-bred organisms is one of the most popular methods to restore species, but concerns exist regarding genetic impacts on natural populations over the long-term. Slow recovery of depleted eastern oyster C. virginica populations in the Chesapeake Bay prompted a large-scale hatchery-based restoration program consisting of the mass-release of hatchery-produced juveniles from local, wild broodstock. This dissertation characterized the genetic impact of this program, with the overall goal of understanding how characteristics of species life-history interact with hatchery practices to shape genetic variation in populations over short and long-time scales. In Chapter 2, analysis of genetic diversity changes resulting from hatchery production under two spawning designs (mass- and controlled-spawns) revealed substantial reductions in diversity and the number of breeders from parents to offspring, due primarily to high variance in reproductive success among adults in hatchery culture. In Chapter 3, high-resolution genomic data was used in a population genetic analysis comparing diversity of restored reefs in Harris Creek with variable planting histories and husbandry practices to 'wild' Chesapeake Bay oyster reefs. While restored reefs showed similar levels of diversity as wild reefs, strong positive relationships between planting frequency or broodstock numbers and genetic diversity were found, suggesting that hatchery practices can significantly impact diversity in natural populations. These genomic data also permitted the investigation of local adaptation and genotype by environment associations which revealed that salinity was correlated with loci putatively under selection, suggesting potential fitness tradeoffs for sourcing non-local broodstock. In Chapter 4, an individual-based model was created using biological and demographic data from Chesapeake Bay oysters to simultaneously evaluate the impact of multiple hatchery practices on natural p
Book Synopsis Fertilization Success and Zygote Survival in the Galveston Bay Population of Crassostrea Virginica (Gmelin), the Eastern Oyster by : Stephanie Celeste Armstrong
Download or read book Fertilization Success and Zygote Survival in the Galveston Bay Population of Crassostrea Virginica (Gmelin), the Eastern Oyster written by Stephanie Celeste Armstrong and published by . This book was released on 1997 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The American Oyster, Crassostrea Virginica Gmelin by : Paul Simon Galtsoff
Download or read book The American Oyster, Crassostrea Virginica Gmelin written by Paul Simon Galtsoff and published by . This book was released on 1964 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemical Induction of Settlement in Larvae of the Eastern Oyster (Crassostrea Virginica) (Gmelin) by : Melissa N. Grant
Download or read book Chemical Induction of Settlement in Larvae of the Eastern Oyster (Crassostrea Virginica) (Gmelin) written by Melissa N. Grant and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development, Growth and Environmental Adaptations in Two Genetically Distinct Populations of the Eastern Oyster, Crassostrea Virginica(GMELIN) by : Mirella Concepcion Martinez-Bucciantini
Download or read book Development, Growth and Environmental Adaptations in Two Genetically Distinct Populations of the Eastern Oyster, Crassostrea Virginica(GMELIN) written by Mirella Concepcion Martinez-Bucciantini and published by . This book was released on 1995 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recruitment Patterns and Culturing Techniques of the Eastern Oyster Crassostrea Virginica (GMELIN) in a Coastal Georgia Tidal Creek System by : Deborah Ann Moroney
Download or read book Recruitment Patterns and Culturing Techniques of the Eastern Oyster Crassostrea Virginica (GMELIN) in a Coastal Georgia Tidal Creek System written by Deborah Ann Moroney and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Investigation of the Genetic Basis of Heterosis in the Pacific Oyster Crassostrea Gigas (Thunberg) by : Daniel Joseph McGoldrick
Download or read book An Experimental Investigation of the Genetic Basis of Heterosis in the Pacific Oyster Crassostrea Gigas (Thunberg) written by Daniel Joseph McGoldrick and published by . This book was released on 1997 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of the Growth of the Eastern Oyster Crassostrea Virginica (Gmelin) in Low and High Salinity and Its Relationship with the Turbellarian Urastoma Cyprinae (Graff) by : Erick Bataller
Download or read book Comparison of the Growth of the Eastern Oyster Crassostrea Virginica (Gmelin) in Low and High Salinity and Its Relationship with the Turbellarian Urastoma Cyprinae (Graff) written by Erick Bataller and published by . This book was released on 2001 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of the Biology of a Symbiosis Between the Eastern Oyster (Crassostrea Virginica Gmelin) and an Inquiline Cnidarian, Eutima Sp by : Dale Samler
Download or read book Studies of the Biology of a Symbiosis Between the Eastern Oyster (Crassostrea Virginica Gmelin) and an Inquiline Cnidarian, Eutima Sp written by Dale Samler and published by . This book was released on 2001 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shellfish Aquaculture and the Environment by : Sandra E. Shumway
Download or read book Shellfish Aquaculture and the Environment written by Sandra E. Shumway and published by John Wiley & Sons. This book was released on 2011-08-08 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shellfish Aquaculture and the Environment focuses primarily on the issues surrounding environmental sustainability of shellfish aquaculture. The chapters in this book provide readers with the most current data available on topics such as resource enhancement and habitat restoration. Shellfish Aquaculture and the Environment is also an invaluable resource for those looking to develop and implement environmental best management practices. Edited one of the world's leading shellfish researchers and with contributions from around the world, Shellfish Aquaculture and the Environment is the definitive source of information for this increasingly important topic. View the Executive Summary here: http://seagrant.uconn.edu/publications/aquaculture/execsumm.pdf
Book Synopsis Growing Oysters (Crassostrea Virginica) Using the French String Technique at an Exposed and Sheltered Site in Chaleur Bay, New Brunswick by : M. M Niles
Download or read book Growing Oysters (Crassostrea Virginica) Using the French String Technique at an Exposed and Sheltered Site in Chaleur Bay, New Brunswick written by M. M Niles and published by . This book was released on 2014 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The eastern oyster (Crassostrea virginica, Gmelin 1791) is found in estuaries from the Gulf of St. Lawrence, Canada to the coast of Argentina. In this study, the performance of oysters cultivated using the modified French string technique in an exposed environment and in a sheltered environment. was compared. More specifically, the authors compared growth, reproductive condition, fouling and survival of oysters and monitored environmental parameters between the two sites.--Document.
Book Synopsis The Reproductive Cycle of Early Setting Crassostrea Virginica (Gmelin) in the Northern Gulf of Mexico and Its Implications for Population Recruitment by : Paul Frederick Hayes
Download or read book The Reproductive Cycle of Early Setting Crassostrea Virginica (Gmelin) in the Northern Gulf of Mexico and Its Implications for Population Recruitment written by Paul Frederick Hayes and published by . This book was released on 1979 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Attempted Hybridization Between the Eastern Oyster, Crassostrea Virginica (Gmelin) and Two Asian Oysters, C. Gigas (Thunberg) and C. Rivularis (Gould) Using Bridging Crosses by : Suifen Lyu
Download or read book Attempted Hybridization Between the Eastern Oyster, Crassostrea Virginica (Gmelin) and Two Asian Oysters, C. Gigas (Thunberg) and C. Rivularis (Gould) Using Bridging Crosses written by Suifen Lyu and published by . This book was released on 1996 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
