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  • 1
    Electronic Resource
    Electronic Resource
    Effect of Timing of Seed Deployment on Growth and Mortality of Oysters, Crassostrea virginica, Affected by Juvenile Oyster Disease (JOD) (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the World Aquaculture Society 27 (1996), S. 0 
    Details
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract.— Mortality of oysters, Crassostrea virginica, caused by Juvenile Oyster Disease (JOD) has been a chronic problem the northeastern United States since 1988. To assist in identifying potential health management options, the effect of time of spawning and deployment of oysters on resultant growth and mortality was examined in the Damariscotta River, Maine. Broodstock oysters from a line selected for fast growth were spawned at 2-wk intervals between 28 March and 19 July 1995. Duplicate groups of juvenile oysters from each spawn were deployed in floating trays between 23 May and 31 August. Mortality and size of all cohorts were determined from late June to early December. Cumulative mortality of oysters was related to the timing of deployment. Cohorts placed in the river before June or after mid-August had cumulative mortalities of 20% or less. Oysters deployed between 8 June and 18 August had cumulative mortalities ranging from 64–96%. Growth of all cohorts was rapid immediately after deployment but decreased once JOD began to have an effect. Final size of oysters was directly related to age. This study determined that seed oysters placed in the Damariscotta River between June and mid-August will experience high mortality and low growth. Potential management options to reduce JOD impact include 1) early spawning and deployment in May, ensuring that a mean shell height 〉25 mm is reached prior to August and 2) late spawning and deployment after mid-August to avoid exposure to JOD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-7345.1996.tb00628.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Growth and Mortality of Ostrea edulis at Two Sites on the Damariscotta River Estuary, Maine, USA (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the World Aquaculture Society 32 (2001), S. 0 
    Details
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The Damariscotta River estuary is a center of oyster culture in Maine, yet the comparative performance of flat oysters Ostrea edulis at different locations in this now Bonamia ostreae-enzootic estuary has not been assessed. Juvenile O. edulis were deployed in July 1997 among replicate floating trays at one estuarine (Little Point) and one marine site (Lowes Cove), and growth, mortality, and B. ostreae prevalence were compared through December 1999. Growth was faster at Little Point though oysters at both locations reached market size in less than three full growing seasons. Mortality was similar between locations except following a June 1998 rain event that decreased salinity more precipitously at Little Point. Cumulative mortality was greater at Little Point (45.8%) than Lowes Cove (26.7%). Surprisingly, B. ostreae was observed in only a single oyster from Little Point in May 1998. These data indicate that flat oysters in Maine may grow well across a wide range of environments, yet may demonstrate better survival at marine sites where salinity fluctuations are less extreme. While B. ostreae is likely still a threat, selection of sites where rapid growth to market size is possible may reduce its impact.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-7345.2001.tb01099.x
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  • 3
    Electronic Resource
    Electronic Resource
    Growth and mortality of cultured bay scallops in the Damariscotta River, Maine (USA) (1997)
    Springer
    Aquaculture international 5 (1997), S. 451-460 
    Details
    ISSN: 1573-143X
    Keywords: Bay scallops (Argopecten irradians) ; Growth ; Maine ; Mortality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Growth and mortality of hatchery-reared bay scallops, Argopecten irradians, were determined over an 18 month period (July 1994-December 1995) at two locations in the Damariscotta River, Maine, north of its natural distribution. Growth occurred primarily between May and October when mean water temperature exceeded 10 °C. Final mean shell height (56.3 mm) was significantly greater (p ≤ 0.0005) at the upriver site than at the downriver site in association with a higher mean water temperature. Cumulative mortality (43-49%) over this period occurred primarily over the winter months, in conjunction with mean water temperatures below 5 °C. Although it is possible to rear bay scallops to commercial size in Maine, the short growing season, high winter mortality, and costs associated with over-wintering and fouling will likely deter commercial culture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018388812866
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  • 4
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    (Table S1) Stable isotope record and growth rates of cultured Mytilus edulis
    PANGAEA
    In:  Supplement to: Wanamaker, Alan D; Kreutz, Karl J; Borns, Harold W; Introne, Douglas S; Feindel, Scott; Funder, Svend; Rawson, Paul D; Barber, Bruce J (2007): Experimental determination of salinity, temperature, growth, and metabolic effects on shell isotope chemistry of Mytilus edulis collected from Maine and Greenland. Paleoceanography, 22, PA2217, https://doi.org/10.1029/2006PA001352
    Details
    Publication Date: 2023-05-12
    Description: To study the effects of temperature, salinity, and life processes (growth rates, size, metabolic effects, and physiological/genetic effects) on newly precipitated bivalve carbonate, we quantified shell isotopic chemistry of adult and juvenile animals of the intertidal bivalve Mytilus edulis (Blue mussel) collected alive from western Greenland and the central Gulf of Maine and cultured them under controlled conditions. Data for juvenile and adult M. edulis bivalves cultured in this study, and previously by Wanamaker et al. (2006, doi:10.1029/2005GC001189), yielded statistically identical paleotemperature relationships. On the basis of these experiments we have developed a species-specific paleotemperature equation for the bivalve M. edulis [T °C = 16.28 (±0.10) - 4.57 (±0.15) {d18Oc VPBD - d18Ow VSMOW} + 0.06 (±0.06) {d18Oc VPBD - d18Ow VSMOW}**2; r**2 = 0.99; N = 323; p 〈 0.0001]. Compared to the Kim and O'Neil (1997) inorganic calcite equation, M. edulis deposits its shell in isotope equilibrium (d18Ocalcite) with ambient water. Carbon isotopes (d13Ccalcite) from sampled shells were substantially more negative than predicted values, indicating an uptake of metabolic carbon into shell carbonate, and d13Ccalcite disequilibrium increased with increasing salinity. Sampled shells of M. edulis showed no significant trends in d18Ocalcite based on size, cultured growth rates, or geographic collection location, suggesting that vital effects do not affect d18Ocalcite in M. edulis. The broad modern and paleogeographic distribution of this bivalve, its abundance during the Holocene, and the lack of an intraspecies physiologic isotope effect demonstrated here make it an ideal nearshore paleoceanographic proxy throughout much of the North Atlantic Ocean.
    Keywords: -; Damariscotta; Event label; Greenland; Growth rate; Gulf of Maine; HAND; Mytilus edulis, shell length; Salinity; Sample comment; Sample ID; Sampling by hand; Sisimiut_2004; Temperature, difference; Temperature, water; Δδ18O; δ13C, dissolved inorganic carbon; δ13C, skeletal carbonate; δ18O, skeletal carbonate; δ18O, water
    Type: Dataset
    Format: text/tab-separated-values, 3472 data points
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    DATA PANGAEA
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