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Full-Text Articles in Aquaculture and Fisheries

Sea Lamprey (Petromyzon Marinus) As A Functional Link Between Marine And Freshwater Ecosystems, Daniel M. Weaver Aug 2017

Sea Lamprey (Petromyzon Marinus) As A Functional Link Between Marine And Freshwater Ecosystems, Daniel M. Weaver

Electronic Theses and Dissertations

Anadromous sea lamprey Petromyzon marinus are native to Atlantic coastal systems and serve as a functional link between marine and freshwater ecosystems. Sea lamprey spend 1–2 years in the ocean parasitizing marine vertebrates before migrating into freshwaters during the spring to spawn. There they construct nests, spawn, then die shortly afterwards. Larvae hatch, bury into fine sediments and reside in streams for generally 6–8 years, but up to 14. Larvae then undergo metamorphosis, a non-feeding period characterized by a series of physical and physiological changes. The juveniles (macropthalmia) then migrate to the ocean to begin the parasitic juvenile ...


Multiscale Habitat Suitability Modeling For Canary Rockfish (Sebastes Pinniger) Along The Northern California Coast, Portia N. Saucedo Jan 2017

Multiscale Habitat Suitability Modeling For Canary Rockfish (Sebastes Pinniger) Along The Northern California Coast, Portia N. Saucedo

Theses and projects

Detailed spatially-explicit data of the potential habitat of commercially important rockfish species are a critical component for the purposes of marine conservation, evaluation, and planning. Predictive habitat modeling techniques are widely used to identify suitable habitat in un-surveyed regions. This study elucidates the predicted distribution of canary rockfish (Sebastes pinniger) along the largely un-surveyed northern California coast using data from visual underwater surveys and predictive terrain complexity covariates. I used Maximum Entropy (MaxEnt) modelling software to identify regions of suitable habitat for S. pinniger greater than nine cm in total length at two spatial scales. The results of this study ...


The Consumption Of Lionfish As A Control Of An Invasive Species In Bermuda, Alaire Davis Jan 2016

The Consumption Of Lionfish As A Control Of An Invasive Species In Bermuda, Alaire Davis

Undergraduate Honors Theses

This research focuses on how lionfish are affecting the waters of the Caribbean Sea and western Atlantic Ocean, and the practices in place to control the lionfish invasion. The presence of lionfish in these areas is a significant problem because of the detrimental effect they have on coral reef ecosystems. Countries in the Atlantic that are directly dependent on underwater ecosystems for their economy, and the global underwater environment in general, are at risk. My research aimed to determine if consuming lionfish can be a viable way of reducing lionfish in Bermuda. I approached this question by surveying three categories ...


Temporal Variation In Larval Release In Botrylloides Violaceous, Damion J. Delton, Sarah Cohen Aug 2013

Temporal Variation In Larval Release In Botrylloides Violaceous, Damion J. Delton, Sarah Cohen

STAR (STEM Teacher and Researcher) Presentations

Despite Botrylloides violaceous being a globally invasive species in temperate marine habitats, little is known about it’s natural dispersal behavior. Previous work (Delton et al, 2011) suggests behavioral inferences based on a related and much more commonly studied species may not be appropriate, potentially due to a large size difference between the non-feeding larvae of these two species. Here, we consider factors that may affect dispersal potential. To study how light affects larval release, we measured timing of larval release in the field and compared larval size and time of release. Colonies were collected from floating docks in Richmond ...


Assessment Of The Economic Impacts Of Recreational Boating In Virginia, Thomas J. Murray Dec 2012

Assessment Of The Economic Impacts Of Recreational Boating In Virginia, Thomas J. Murray

Reports

Virginia is home to more than 200,000 recreational boats, providing a gateway to marine recreation in Chesapeake Bay and offshore waters. Virginia’s importance to boating access carries with it an expanding economy related to boating and boating related industries.

In addition to the large group of boater-citizens who reside in Virginia, local marine businesses such as marinas also provide access and berthing to many non-locally owned watercraft. While watercraft registrations provide a partial and useful estimate of the stock of boats in a region, the true economic impact arising from recreational boating primarily depends upon the type of ...


Big Blue And You: An Interdisciplinary Look At Science And The Ocean, A Students Teaching Students Course, Megan M. Nepshinsky, Alexa Kretsch, Benjamin Negrete May 2012

Big Blue And You: An Interdisciplinary Look At Science And The Ocean, A Students Teaching Students Course, Megan M. Nepshinsky, Alexa Kretsch, Benjamin Negrete

Senior Honors Projects

This class is the second project under the new Honors Program initiative, Students Teaching Students (STS). STS was brought to URI and implemented by Bridget Griffith as part of her Senior Honors Project in 2011. Students apply in their Junior year to design, research, and teach an honors course on a topic about which they are passionate. The STS program allows motivated honors students to have a unique opportunity to lead a class as student professors. This allows students a freedom of creativity on the topic, assignments, and teaching style. Drawing on our own experiences, we were able to create ...


Virginia Charter Boat Workshop Summary March 2012, Susanna Musick Jan 2012

Virginia Charter Boat Workshop Summary March 2012, Susanna Musick

Reports

No abstract provided.


Assessment Of The Economic Impacts Of Recreational Boating In Middlesex County, Virginia, Thomas J. Murray Mar 2011

Assessment Of The Economic Impacts Of Recreational Boating In Middlesex County, Virginia, Thomas J. Murray

Reports

No abstract provided.


Assessment Of The Economic Impacts Of Recreational Boating In The City Of Hampton, Thomas J. Murray, James Kirkley, Doug Lipton Jan 2009

Assessment Of The Economic Impacts Of Recreational Boating In The City Of Hampton, Thomas J. Murray, James Kirkley, Doug Lipton

Reports

No abstract provided.


Conference Proceedings Water Access 2007: A National Symposium On Working Waterways & Waterfronts, Virginia Sea Grant May 2007

Conference Proceedings Water Access 2007: A National Symposium On Working Waterways & Waterfronts, Virginia Sea Grant

Reports

No abstract provided.


Economic Activity Associated With The Inaugural “Virginia In-Water Boat Expo”, September 9-11, 2005, Thomas J. Murray Apr 2006

Economic Activity Associated With The Inaugural “Virginia In-Water Boat Expo”, September 9-11, 2005, Thomas J. Murray

Reports

No abstract provided.


Final Project Report Fisheries Extension Enhancement Plan To Enhance Education And Outreach To The Mid-Atlantic Charter Boat Fisheries, Sea Grant Marine Advisory Program Jun 2005

Final Project Report Fisheries Extension Enhancement Plan To Enhance Education And Outreach To The Mid-Atlantic Charter Boat Fisheries, Sea Grant Marine Advisory Program

Reports

No abstract provided.


Developing A Vision For Land Use And Waterfront Access In Lancaster County, Lands End Planners Jun 2005

Developing A Vision For Land Use And Waterfront Access In Lancaster County, Lands End Planners

Reports

No abstract provided.


Virginia Marine Trades Feasibility Study, Northern Neck Planning District Commission, Thomas J. Murray Mar 2004

Virginia Marine Trades Feasibility Study, Northern Neck Planning District Commission, Thomas J. Murray

Reports

No abstract provided.


Virginia Marine Trades Workforce Training -A Regional Needs Assessment, Thomas J. Murray Jan 2004

Virginia Marine Trades Workforce Training -A Regional Needs Assessment, Thomas J. Murray

Reports

No abstract provided.


Evaluation Of Comparative Watercraft Personal Property Taxation In Northern Neck Localities, Thomas J. Murray Jun 2002

Evaluation Of Comparative Watercraft Personal Property Taxation In Northern Neck Localities, Thomas J. Murray

Reports

No abstract provided.


Modeling The Msx Parasite In Eastern Oyster (Crassostrea Virginica) Populations. I. Model Development, Implementation, And Verification, Susan Ford, Eric Powell, John Klinck, Eileen Hofmann Jan 1999

Modeling The Msx Parasite In Eastern Oyster (Crassostrea Virginica) Populations. I. Model Development, Implementation, And Verification, Susan Ford, Eric Powell, John Klinck, Eileen Hofmann

CCPO Publications

A mathematical model simulating the host-parasite-environmental interactions of eastern oysters (Crassostrea virginica) and the pathogen, Haplosporidium nelsoni, which causes MSX disease, has been developed. The model has 2 components. One replicates the infection process within the oyster and the other simulates transmission. The infection-development component relies on basic physiological processes of both host and parasite, modified by the environment, to reproduce the observed annual prevalence cycle of H. nelsoni. Equations describing these rates were constructed using data from long-term field observations, and field and laboratory experiments. In the model, salinity and temperature have direct effects upon in vivo parasite survival ...


Marine Financing, Jon A. Lucy Oct 1976

Marine Financing, Jon A. Lucy

Reports

No abstract provided.