Genetic Evaluation of Supplementation-Assisted American Shad Restoration in the James River, Virginia
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چکیده
منابع مشابه
Feeding Behavior of American Shad during Spawning Migration in the York River, Virginia
—Throughout its native range, American shad Alosa sapidissima is thought to cease feeding during anadromous migration. We examined the feeding habits of American shad during spawning migration by documenting changes in diet composition and feeding that occur in mature fish in the York River, Virginia. American shad were collected prior to and after spawning at various locations on a gradient fr...
متن کاملCohort-Specific Growth and Mortality of Juvenile American Shad in the Pamunkey River, Virginia
—We estimated the variation in instantaneous rates of growth (G) and mortality (M) between intraannual cohorts of juvenile American shad Alosa sapidissima in the Pamunkey River, Virginia. The ages of juveniles captured by push net during the juvenile abundance index surveys in 1998 and 1999 were estimated by counting daily rings on the sagittal otoliths. Weight-at-age and abundance-at-age data ...
متن کاملContribution of Allochthonous Carbon to American Shad Production in the Mattaponi River, Virginia, Using Stable Isotopes
Our objective was to quantify the contribution of autochthonous, locally-produced phytoplankton, and allochthonous, terrestrial-derived organic matter (OM) to the production of young-of-year (YOY) American shad (Alosa sapidissima) using stable isotopes. We measured the carbon and nitrogen stable isotope composition of YOY American shad in the tidal fresh water of the Mattaponi River, a tributar...
متن کاملGenetic differentiation of spring-spawning and fall-spawning male Atlantic sturgeon in the James River, Virginia
Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus, Acipenseridae) populations are currently at severely depleted levels due to historic overfishing, habitat loss, and pollution. The importance of biologically correct stock structure for effective conservation and management efforts is well known. Recent improvements in our understanding of Atlantic sturgeon migrations, movement, and the occurr...
متن کاملTracking Nursery Habitat Use in the York River Estuary, Virginia, by Young American Shad Using Stable Isotopes
—We developed and applied a stable isotope turnover model to estimate how long age-0 American shad Alosa sapidissima reside within tidal freshwater and brackish-water habitats in the York River estuary, Virginia. The residence time was estimated by modeling the changing stable isotope ratio (either the carbon [dC] or sulfur [dS] stable isotope ratio) of an age-0 American shad as it migrates sea...
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ژورنال
عنوان ژورنال: Marine and Coastal Fisheries
سال: 2014
ISSN: 1942-5120
DOI: 10.1080/19425120.2014.893465