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Full-Text Articles in Life Sciences
2012 Summer/Fall Msx Prevalence Report In The Damariscotta River Estuary, Me, Nicole Messerman, Timothy Bowden
2012 Summer/Fall Msx Prevalence Report In The Damariscotta River Estuary, Me, Nicole Messerman, Timothy Bowden
Maine Sea Grant Publications
The Eastern oyster, Crassostrea virginica, makes up an important commercial fishery along the East and Gulf coast of North America. Consumer demand has permitted the development of the oyster aquaculture industry. Specifically, about 70% of the total production of harvested oysters in Maine came from the Damariscotta River Estuary in 2010(DMR). Unfortunately, disease issues have become a major concern. One particular disease affecting the eastern oyster is known as MSX (multinucleated sphere unknown). MSX is caused by the protozoan parasite, Haplosporidium nelsoni, and has devastating effects on cultured and wild oysters, killing 90-95% of the oysters it infects. …
How Do Shellfisheries Influence Genetic Connectivity In Metapopulations? A Modeling Study Examining The Role Of Lower Size Limits In Oyster Fisheries, Daphne M. Munroe, Eileen E. Hofmann, Eric N. Powell, John M. Klinck
How Do Shellfisheries Influence Genetic Connectivity In Metapopulations? A Modeling Study Examining The Role Of Lower Size Limits In Oyster Fisheries, Daphne M. Munroe, Eileen E. Hofmann, Eric N. Powell, John M. Klinck
CCPO Publications
Fisheries can potentially alter evolutionary processes such as genetic connectivity and lead to genotypic changes in stocks. Using an individual-based metapopulation genetics model, we examined the possible influence of oyster (Crassostrea virginica) fisheries on genetic connectivity. We simulated a range of realistic fishing pressures, with and without a minimum size limit (limit = 63.5 mm), over a range of fishing scenarios including single-area and stock-wide fisheries. Movement of a neutral marker gene provided an indicator of gene transfer between populations. Simulations showed that fishing may alter genetic connectivity. Increasing fishing pressure tended to decrease potential for fished populations …