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Full-Text Articles in Life Sciences

Survival Of Eastern Oysters Crassostrea Virginica From Three Lines Following Experimental Challenge With Bacterial Pathogens, Javier Gomez-Leon, Luisa Villamil, Scott A. Salger, Rachel Sallum, Antonio Remacha-Trivino, Dale F. Leavitt, Marta Gomez-Chiarri Dec 2012

Survival Of Eastern Oysters Crassostrea Virginica From Three Lines Following Experimental Challenge With Bacterial Pathogens, Javier Gomez-Leon, Luisa Villamil, Scott A. Salger, Rachel Sallum, Antonio Remacha-Trivino, Dale F. Leavitt, Marta Gomez-Chiarri

Marta Gomez-Chiarri

Shellfish production is often affected by bacterial pathogens that cause high losses in hatcheries and nurseries. We evaluated the relative survival of larvae and juveniles of 3 Crassostrea virginica oyster lines: (1) GHP, a Rhode Island line; (2) NEHY, a line resistant to dermo and multinucleated sphere X diseases; and (3) FLOWERS, a line resistant to Roseovarius oyster disease, experimental challenge with Vibrio spp. isolates RE22 and RE101, causative agents of bacillary necrosis in Pacific oyster larvae, and the type strain of Roseovarius crassostreae, causative agent of Roseovarius oyster disease. All of the isolates were able to induce significant mortalities ...


Application Of Web Mashup Technology To Oyster Information Services, Christian Chuindja Ngniah Dec 2012

Application Of Web Mashup Technology To Oyster Information Services, Christian Chuindja Ngniah

University of New Orleans Theses and Dissertations

Web mashup is a lightweight technology used to integrate data from remote sources without direct access to their databases. As a data consumer, a Web mashup application creates new contents by retrieving data through the Web application programming interface (API) provided by the external sources. As a data provider, the service program publishes its Web API and implements the specified functions.

In the project reported by this thesis, we have implemented two Web mashup applications to enhance the Web site oystersentinel.org: the Perkinsus marinus model and the Oil Spill model. Each model overlay geospatial data from a local database ...


Modeling Of Oyster Larval Connectivity For Cbf In Support Of Noaa’S Community-Based Restoration Program & Restore America’S Estuaries Oyster And Reef Balls On Sanctuary Reefs In Md And Va - Phase Three, Mac Sisson, Jian Shen Dec 2012

Modeling Of Oyster Larval Connectivity For Cbf In Support Of Noaa’S Community-Based Restoration Program & Restore America’S Estuaries Oyster And Reef Balls On Sanctuary Reefs In Md And Va - Phase Three, Mac Sisson, Jian Shen

Reports

1. The overarching goal of the Chesapeake Bay Foundation (CBF) for this project has been to enhance the Chesapeake Bay’s oyster population. In Virginia, CBF is working with partners to focus restoration efforts on the Lafayette River in order to bring the river’s biomass and reef substrate to a threshold level that will show a systemic response in terms of enhanced spatset. Portions of their grant have funded the hydrodynamic modeling of the Lafayette River recently performed and herein reported. 2. VIMS personnel have modified its existing three-dimensional hydrodynamic model of the Lafayette/Elizabeth/James Rivers to conduct ...


Blue Crab Industry - Oyster Aquaculture Training And Transition June 2011- June 2012 Final Report, Matthew Richmond Dec 2012

Blue Crab Industry - Oyster Aquaculture Training And Transition June 2011- June 2012 Final Report, Matthew Richmond

Reports

No abstract provided.


Setting The Sound Up For Success, Hillary Kenyon Oct 2012

Setting The Sound Up For Success, Hillary Kenyon

Wrack Lines

Deploying remotely-set disease-resistant oyster seed in biodegradable netting on a natural bed in Connecticut. The eastern oyster, Crassostrea virginica, is a keystone species in Connecticut's coastal environment.


Clam (Corbicula Fluminea) As A Potential Sentinel Of Human Norovirus Contamination In Freshwater, Xunyan Ye May 2012

Clam (Corbicula Fluminea) As A Potential Sentinel Of Human Norovirus Contamination In Freshwater, Xunyan Ye

Dissertations

The purpose of this study was to evaluate and validate the use of the clam Corbicula fluminea as a sentinel of human noroviruses (HuNoV) contamination in freshwater. The first specific aim was to develop a new method to extract HuNoV RNA from contaminated bivalves (e.g. oysters, clams) that would be much faster than existing methods. The procedure developed includes an initial total RNA extraction using TRI Reagent, followed by HuNoV RNA concentration and purification using biotinylated probe-capture technology. HuNoV RNA is finally detected by real-time RT-PCR. Using bivalve homogenates spiked with HuNoV, 100 PCR detection units of the virus ...


Genetic Variation In Potentially Virulent Vibrio Parahaemolyticus From The Northern Gulf Of Mexico, Nicholas Felix Noriea Iii May 2012

Genetic Variation In Potentially Virulent Vibrio Parahaemolyticus From The Northern Gulf Of Mexico, Nicholas Felix Noriea Iii

Dissertations

Vibrio parahaemolyticus (Vp) is a gram-negative bacterium found naturally in marine and estuarine environments. Vp is found in oysters including those which are later consumed by the public. Sub-populations of potentially virulent Vp contain specific virulence factors and are relevant human pathogens capable of causing gastroenteritis, wound infection, and death. The tdh and trh genes, both encoding hemolysins, have been correlated with the majority of clinical Vp isolates but have not been shown to be the definitive virulence factors.

A total of 146 Vp isolates from the northern Gulf of Mexico were collected and probed for ...


Abstracts Of Technical Papers, Presented At The 104th Annual Meeting, National Shellfisheries Association, Seattle, Washington, March 24–29, 2012, National Shellfisheries Association Apr 2012

Abstracts Of Technical Papers, Presented At The 104th Annual Meeting, National Shellfisheries Association, Seattle, Washington, March 24–29, 2012, National Shellfisheries Association

VIMS Articles

No abstract provided.


Modeling The Dispersal Of Eastern Oyster (Crassostrea Virginica) Larvae In Delaware Bay, Diego A. Narvaez, John M. Klinck, Eric N. Powell, Eileen E. Hofmann, John Wilkin, Dale B. Haidvogel Jan 2012

Modeling The Dispersal Of Eastern Oyster (Crassostrea Virginica) Larvae In Delaware Bay, Diego A. Narvaez, John M. Klinck, Eric N. Powell, Eileen E. Hofmann, John Wilkin, Dale B. Haidvogel

CCPO Publications

The interactions of circulation and growth processes in determining the horizontal distribution of eastern oyster (Crassostrea virginica) larvae in the Delaware Bay estuary were investigated with a coupled circulation-individual-based larvae model that used environmental conditions from the spawning seasons (mid-June to mid-September) of 1984, 1985, 1986, 2000, and 2001. Particles, representing oyster larvae, were released at five-day intervals from areas in Delaware Bay that correspond to natural oyster reefs. The simulated larval development time was used to estimate potential larval success, determined by the percent of larvae that successfully reached settlement size (330 µm) within the planktonic larval duration of ...


An Introduction To Ecology Of Infectious Diseases - Oysters And Estuaries, Eileen E. Hofmann, Susan E. Ford Jan 2012

An Introduction To Ecology Of Infectious Diseases - Oysters And Estuaries, Eileen E. Hofmann, Susan E. Ford

OEAS Faculty Publications

Infectious diseases are recognized as an important factor regulating marine ecosystems (Harvell et al., 1999, 2002, 2004; Porter et al., 2001; McCallum et al., 2004; Ward and Lafferty, 2004; Stewart et al., 2008; Bienfang et al., 2011). Many of the organisms affected by marine diseases have important ecological roles in estuarine and coastal environments and some are also commercially important. Outbreaks of infectious diseases in these environments, referred to as epizootics, can produce significant population declines and extinctions, both of which threaten biodiversity, food web interactions, and ecosystem productivity (Harvell et al., 2002, 2004).


Can Oysters Crassostrea Virginica Develop Resistance To Dermo Disease In The Field: The Impediment Posed By Climate Cycles, Eric N. Powell, John M. Klinck, Ximing Guo, Eileen E. Hofmann, Susan E. Ford, David Bushek Jan 2012

Can Oysters Crassostrea Virginica Develop Resistance To Dermo Disease In The Field: The Impediment Posed By Climate Cycles, Eric N. Powell, John M. Klinck, Ximing Guo, Eileen E. Hofmann, Susan E. Ford, David Bushek

CCPO Publications

Populations of eastern oysters, Crassostrea virginica, are commonly limited by mortality from dermo disease. Little development of resistance to Perkinsus marinus, the dermo pathogen, has occurred, despite the high mortality rates and frequency of epizootics. Can the tendency of the parasite to exhibit cyclic epizootics limit the oyster's response to the disease despite the presence of alleles apparently conferring disease resistance? We utilize a gene-based population dynamics model to simulate the development of disease resistance in Crassostrea virginica populations exposed to cyclic mortality encompassing periodicities expected of dermo disease over the geographic range at which epizootics have been observed ...


Aquaculture In The Gambia, Michael A. Rice, Famara S. Darboe, Ousman Drammeh, Kanye Babanding Dec 2011

Aquaculture In The Gambia, Michael A. Rice, Famara S. Darboe, Ousman Drammeh, Kanye Babanding

Michael A Rice

Aquaculture in The Gambia is dominated by the production of tilapia in ponds in the rice-producing Central River Region of the country with project funding through international donors. There is one shrimp farm in the country, originally financed by Swedish investors focusing on production of the exotic Penaeus monodon, but after a decade of production operations ceased due to poor profitability. Experimental culture of mangrove oysters Crassostrea tulipa and blood ark cockles, Senilia senilis are being conducted by women shellfishers in the Tanbi wetlands estuary neal the capital city of Banjul and in Kartong along the southwestern coast.