Growth, morphometrics, and nutrient content of farmed eastern oysters, Crassostrea virginica (Gmelin), in New Hampshire, USA
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Growth, morphometrics, and nutrient content of farmed eastern oysters, Crassostrea virginica (Gmelin), in New Hampshire, USA



Public Access Version Available on: January 01, 2030, 12:00 AM
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Details:

  • Journal Title:
    Aquaculture Research
  • Personal Author:
  • Description:
    When harvested, oysters represent a removal from the ecosystem of nutrients such as nitrogen (N) and carbon (C). A number of factors potentially affect nutrient content, but a quantitative understanding across the geographical range of the eastern oysters is lacking. This study was designed to quantify the relationships among various metrics of farmed eastern oysters near its northern geographical range focusing on nutrient content. Hatchery‐reared oysters were deployed in polyethylene bags at six sites, and were measured on multiple occasions from 2010 to 2012. A quadratic polynomial fit to the combined datasets for shell height indicated that on average a ‘cocktail’ size oyster (63 mm shell height) would be reached after 2 year, and ‘regular’ size (76 mm) would require 3 year. There were significant differences in growth rates and oyster nutrient content among the sites; means for %N in soft tissue ranged from 6.9 to 8.6, and 0.07 to 0.18 in shell. Per cent N in soft tissue and shell were highest at two sites at the mouths of rivers with elevated dissolved inorganic N concentrations in the water. Grand means (all sites, seasons and years combined) of soft tissue N and C for regular size oysters were 7.3% and 38.5%, respectively; and for shell N and C were 0.13% and 12.0% respectively. Our study extends the range of data on nutrient content of the eastern oyster to northern New England, and indicates that oyster size, seasonality, and nutrient concentration in ambient water potentially affect %N and %C content of oysters.
  • Keywords:
  • Source:
    Aquaculture Research 48(4): 1525-1537, 2017
  • DOI:
  • Pubmed Central ID:
    30123043
  • Document Type:
    Journal Article
  • Place as Subject:
    New Hampshire
  • Compliance:
    PMC
  • Main Document Checksum:
  • File Type:
  • Supporting Files:
    No Additional Files

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