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Memorial University - Electronic Theses and Dissertations 4
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Document Description
TitleA comparison of feeding physiology in cultured and wild blue mussels Mytilus edulis and M. trossulus
AuthorMooney, Melissa, 1973-
DescriptionThesis (M.Sc.)--Memorial University of Newfoundland, 2001. Marine Studies
Paginationx, 153 leaves : ill., map
SubjectMytilus edulis--Newfoundland and Labrador--Physiology; Mytilus edulis--Food--Newfoundland and Labrador; Mytilus edulis--Feeding and feeds--Newfoundland and Labrador; Mytilus trossulus--Newfoundland and Labrador--Physiology; Mytilus trossulus--Food--Newfoundland and Labrador; Mytilus trossulus--Feeding and feeds--Newfoundland and Labrador;
Degree GrantorMarine Institute (St. John's, N.L.). Marine Studies
DisciplineMarine Studies
Spatial CoverageCanada--Newfoundland and Labrador
NotesBibliography: leaves 116-125
AbstractThe objective was to improve carrying capacity models by providing standardized values for clearance, ingestion, filtration and oxygen uptake for cultured and wild, Mytilus edulis and M. trossulus from Newfoundland. Clearance and ingestion rates of small and large M. edulis and M. trossulus were also compared. -- Measured physiological rates were not significantly different between cultured and wild mussels. Mytilus trossulus demonstrated significantly higher rates of clearance and ingestion compared with M. edulis. Rates of clearance and ingestion generally increased with an increase in food supply. Seasonal patterns were observed for all variables. Larger mussels had higher rates of clearance and ingestion than smaller mussels and should be socked at lower densities. Smaller mussels should be socked at a lower biomass per sock as they have higher clearance per unit biomass. -- Stock size and species proportions, in addition to temperature variability and food availability, contribute to the overall stock food demand. Socking and stocking biomass and site layouts should be adjusted to minimize the risk of exceeding site carrying capacity.
FormatImage/jpeg; Application/pdf
SourcePaper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifiera1522868
RightsThe author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
CollectionElectronic Theses and Dissertations
Scanning StatusCompleted
PDF File(14.56 MB) --
CONTENTdm file name113833.cpd