Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 31 - 60 of 411

Full-Text Articles in Life Sciences

A Study To Assess The Effect Of Tow Duration And Estimate Dredge Efficiency For The Vims Sea Scallop Dredge Survey : Final Report, David Rudders, Sally Roman, Arthur Trembanis, Danielle Ferraro May 2019

A Study To Assess The Effect Of Tow Duration And Estimate Dredge Efficiency For The Vims Sea Scallop Dredge Survey : Final Report, David Rudders, Sally Roman, Arthur Trembanis, Danielle Ferraro

Reports

For the sea scallop, Placopecten magellanicus, the concepts of space and time have emerged as the basis of an effective management tool. The strategy of closing or limiting activities in certain areas for specific lengths of time has gained support as a method to conserve and enhance the sea scallop resource. In the last decade, rotational area management has provided a mechanism to protect juvenile scallops from fishing mortality by closing areas based upon scallop abundance and age distribution. Approximately half of the sea scallop industry’s current annual landings come from areas under this rotational harvest strategy. While this represents …


An Investigation Into The Scallop Parasite Outbreak On The Mid-Atlantic Shelf: Transmission Pathways, Spatio-Temporal Variation Of Infection And Consequences To Marketability : Final Report, David Rudders, Sally Roman, Robert A. Fisher, David Bushek, Daphne Munroe, Eleanor A. Bochenek, Emily Mcgurk, Sarah Borsetti May 2019

An Investigation Into The Scallop Parasite Outbreak On The Mid-Atlantic Shelf: Transmission Pathways, Spatio-Temporal Variation Of Infection And Consequences To Marketability : Final Report, David Rudders, Sally Roman, Robert A. Fisher, David Bushek, Daphne Munroe, Eleanor A. Bochenek, Emily Mcgurk, Sarah Borsetti

Reports

A disease epizootic has developed that threatens one of the most valuable fisheries in the US. The U.S. sea scallop (Placopecten magellanicus) fishery landed $512 million worth of scallop meats in 2017 (NMFS, 2018). This fishery is based on landings of scallop adductor muscles only, with the remainder of the scallop discarded at sea (NEFSC, 2018). During the spring of 2015 both industry and scientific assessment crews noted unprecedented numbers of a parasitic nematode in the adductor muscle of captured scallops (Figure 1). The presence of the parasite in the adductor muscle is expressed through macroscopic lesions, or cysts. These …


Virginia Game Fish Tagging Program Annual Report 2018, Susanna Musick, Lewis Gillingham May 2019

Virginia Game Fish Tagging Program Annual Report 2018, Susanna Musick, Lewis Gillingham

Reports

Through 2018, the Virginia Game Fish Tagging Program (VGFTP) has maintained a 23-year database of records for tagged and recaptured fish. The program is a cooperative project of the Virginia Saltwater Fishing Tournament (VSFT) under the Virginia Marine Resources Commission-(VMRC) and the Virginia Institute of Marine Science (VIMS) of the College of William and Mary (under the VIMS Marine Advisory Program).


Virginia Fishery Resource Grant Program 2018, Virginia Fishery Resource Grant Program, Virginia Institute Of Marine Science Feb 2019

Virginia Fishery Resource Grant Program 2018, Virginia Fishery Resource Grant Program, Virginia Institute Of Marine Science

Reports

No abstract provided.


Virginia Shellfish Aquaculture Situation And Outlook Report: Results Of The 2018 Virginia Shellfish Aquaculture Crop Reporting Survey, Karen Hudson, Virginia Sea Grant Marine Advisory Program Jan 2019

Virginia Shellfish Aquaculture Situation And Outlook Report: Results Of The 2018 Virginia Shellfish Aquaculture Crop Reporting Survey, Karen Hudson, Virginia Sea Grant Marine Advisory Program

Reports

No abstract provided.


Scallop Mark-Recapture To Estimate Density Dependent Natural Mortality And Growth : Final Report, David Rudders, John Hoenig, Sally Roman Aug 2018

Scallop Mark-Recapture To Estimate Density Dependent Natural Mortality And Growth : Final Report, David Rudders, John Hoenig, Sally Roman

Reports

Natural mortality, growth and movement are fundamental processes critical to understanding and describing population dynamics. These population characteristics not only inform and influence stock assessment models, but are also highly relevant with respect to the design and implementation of management strategies to meet fishery objectives. For many species, including sea scallops, these population parameters are difficult to measure due to the nature of the habitats inhabited and as a result, minimal information is often available. In many cases, what estimates do exist are highly uncertain as a result of both observation and process error. The uncertainty of these parameters is …


Virginia Shellfish Aquaculture Situation And Outlook Report: Results Of The 2017 Virginia Shellfish Aquaculture Crop Reporting Survey, Karen Hudson, Virginia Sea Grant Marine Advisory Program Jul 2018

Virginia Shellfish Aquaculture Situation And Outlook Report: Results Of The 2017 Virginia Shellfish Aquaculture Crop Reporting Survey, Karen Hudson, Virginia Sea Grant Marine Advisory Program

Reports

No abstract provided.


An Assessment Of Sea Scallop Abundance And Distribution In The Nantucket Lightship Closed Area And Surrounds: Final Report, David Rudders, Sally Roman May 2018

An Assessment Of Sea Scallop Abundance And Distribution In The Nantucket Lightship Closed Area And Surrounds: Final Report, David Rudders, Sally Roman

Reports

For the sea scallop, Placopecten magellanicus, the concepts of space and time have emerged as the basis of an effective management tool. The strategy of closing or limiting activities in certain areas for specific lengths of time has gained support as a method to conserve and enhance the scallop resource. In the last decade, rotational area management has provided a mechanism to protect juvenile scallops from fishing mortality by closing areas based upon scallop abundance and age distribution. Approximately half of the sea scallop industry’s current annual landings come from areas under this rotational harvest strategy. While this represents a …


A Cooperative High Precision Dredge Survey To Assess The Mid-Atlantic Sea Scallop Resource : Final Report, David Rudders, Sally Roman May 2018

A Cooperative High Precision Dredge Survey To Assess The Mid-Atlantic Sea Scallop Resource : Final Report, David Rudders, Sally Roman

Reports

For the sea scallop, Placopecten magellanicus, the concepts of space and time have emerged as the basis of an effective management tool. The strategy of closing or limiting activities in certain areas for specific lengths of time has gained support as a method to conserve and enhance the scallop resource. In the last decade, rotational area management has provided a mechanism to protect juvenile scallops from fishing mortality by closing areas based upon scallop abundance and age distribution. Approximately half of the sea scallop industry’s current annual landings come from areas under this rotational harvest strategy. While this represents a …


An Assessment Of Sea Scallop Abundance And Distribution In Georges Bank Closed Area Ii And The Southern Extension Closure: Final Report, David Rudders, Sally Roman May 2018

An Assessment Of Sea Scallop Abundance And Distribution In Georges Bank Closed Area Ii And The Southern Extension Closure: Final Report, David Rudders, Sally Roman

Reports

For the sea scallop, Placopecten magellanicus, the concepts of space and time have emerged as the basis of an effective management tool. The strategy of closing or limiting activities in certain areas for specific lengths of time has gained support as a method to conserve and enhance the scallop resource. In the last decade, rotational area management has provided a mechanism to protect juvenile scallops from fishing mortality by closing areas based upon scallop abundance and age distribution. Approximately half of the sea scallop industry’s current annual landings come from areas under this rotational harvest strategy. While this represents a …


Virginia Game Fish Tagging Program Annual Report 2017, Susanna Musick, Lewis Gillingham May 2018

Virginia Game Fish Tagging Program Annual Report 2017, Susanna Musick, Lewis Gillingham

Reports

Through 2017, the Virginia Game Fish Tagging Program (VGFTP) has maintained a 22-year database of records for tagged and recaptured fish. The program is a cooperative project of the Virginia Saltwater Fishing Tournament (VSFT) under the Virginia Marine Resources Commission-(VMRC) and the Virginia Institute of Marine Science (VIMS) of the College of William and Mary (under the VIMS Marine Advisory Program).


An Assessment Of Sea Scallop Abundance And Distribution In Georges Bank Closed Area Ii And Surrounds : Final Report, David Rudders, Sally Roman May 2018

An Assessment Of Sea Scallop Abundance And Distribution In Georges Bank Closed Area Ii And Surrounds : Final Report, David Rudders, Sally Roman

Reports

For the sea scallop, Placopecten magellanicus, the concepts of space and time have emerged as the basis of an effective management tool. The strategy of closing or limiting activities in certain areas for specific lengths of time has gained support as a method to conserve and enhance the scallop resource. In the last decade, rotational area management has provided a mechanism to protect juvenile scallops from fishing mortality by closing areas based upon scallop abundance and age distribution. Approximately half of the sea scallop industry’s current annual landings come from areas under this rotational harvest strategy. While this represents a …


Virginia Seafood Sustainability, Robert A. Fisher Mar 2018

Virginia Seafood Sustainability, Robert A. Fisher

Reports

Virginia’s commercial fisheries operate sustainably under a suite of management tools based upon information received from marine scientists and fishery managers who regularly conduct biological sampling of fish while tracking commercial landings and other gathering of required information. Analyses of fishing effort and overall stock conditions, as well as formulas designed to calculate threshold limits for maintaining sustainable stocks are regularly performed. Restrictions on seasons, size, days at sea, and gear are imposed as needed to achieve management supporting long-term biological sustainability.


Virginia Fishery Resource Grant Program 2017, Virginia Institute Of Marine Science Feb 2018

Virginia Fishery Resource Grant Program 2017, Virginia Institute Of Marine Science

Reports

No abstract provided.


Results For The 2017 Vims Industry Cooperative Surveys Of The Mid-Atlantic, Nantucket Lightship Closed Area, And Closed Area Ii Resource Areas, David Rudders, Sally Roman, Hunter Tipton, Jennifer Anders Oct 2017

Results For The 2017 Vims Industry Cooperative Surveys Of The Mid-Atlantic, Nantucket Lightship Closed Area, And Closed Area Ii Resource Areas, David Rudders, Sally Roman, Hunter Tipton, Jennifer Anders

Reports

The Virginia Institute of Marine Science (VIMS) conducted high resolution sea scallop dredge surveys of the entire Mid-Atlantic (MAB) sea scallop resource area, the Nantucket Lightship (NLCA) access area and surrounds, and the CA II access area and Extension Closure during May-July of 2017 (Figure 1). These surveys were funded by the Sea Scallop Research Set-Aside Program (RSA). Exploitable biomass for each survey is shown in Table 1 for each spatially explicit SAMS (Scallop Area Management Simulator) model area (Figure 2-4). SAMS areas account for differences in recruitment, vital rates, and fishing effort. At the time of the surveys, exploitable …


Development And Implementation Of A High Precision Resource Wide Dredge Survey Of The Mid-Atlantic Scallop Resource Are: Final Report, David Rudders, Sally Roman Jun 2017

Development And Implementation Of A High Precision Resource Wide Dredge Survey Of The Mid-Atlantic Scallop Resource Are: Final Report, David Rudders, Sally Roman

Reports

The sea scallop fishery is currently the most valuable single species fishery in the United States. Part of this success stems from a hybrid management strategy that incorporates a spatial component (rotational closed areas) with traditional fishery management approaches. While much recent attention has focused on the success of closed areas (e.g. Elephant Trunk Closed Area), production from open areas had enabled scallop landings to remain high and relatively stable over the past few years. Regardless of the management approach, timely and accurate information related to scallop distribution and biomass is critical for the effective management of the resource. This …


Discard Mortality Of Sea Scallops Following Capture And Handling In The Sea Scallop Dredge Fishery - Final Report, David Rudders, Sally Roman, James A. Sulikowski, John A. Mandlem, Ryan J. Knotek May 2017

Discard Mortality Of Sea Scallops Following Capture And Handling In The Sea Scallop Dredge Fishery - Final Report, David Rudders, Sally Roman, James A. Sulikowski, John A. Mandlem, Ryan J. Knotek

Reports

The focus of sea scallop, Placopecten magellanicus, management over the past 20 years has been to encourage the harvest of larger animals. This has been accomplished through a series of management measures including gear modifications, effort controls, crew size limitations and spatial management to protect juvenile scallops. While these measures have been effective in reducing the harvest of small scallops, their capture does still occur. Central to fully understanding the impact of the fishery on the resource, is a comprehensive estimate of the non-harvest mortality associated with commercial operations. Non-harvest mortality can be broken down into a number of different …


Virginia Game Fish Tagging Program Annual Report 2016, Susanna Musick, Lewis Gillingham May 2017

Virginia Game Fish Tagging Program Annual Report 2016, Susanna Musick, Lewis Gillingham

Reports

Through 2016, the Virginia Game Fish Tagging Program (VGFTP) has maintained a 21-year database of records for tagged and recaptured fish. The program is a cooperative project of the Virginia Saltwater Fishing Tournament (VSFT) under the Virginia Marine Resources Commission-(VMRC) and the Virginia Institute of Marine Science (VIMS) of the College of William and Mary (under the VIMS Marine Advisory Program).


Virginia Shellfish Aquaculture Situation And Outlook Report : Results Of The 2016 Virginia Shellfish Aquaculture Crop Reporting Survey, Karen Hudson May 2017

Virginia Shellfish Aquaculture Situation And Outlook Report : Results Of The 2016 Virginia Shellfish Aquaculture Crop Reporting Survey, Karen Hudson

Reports

The hatchery-based shellfish aquaculture industry in Virginia continues to grow adding significant value to the Commonwealth's seafood marketplace. Today, watermen harvest both hard clams and oysters from the Commonwealth's public resources,albeit at rates diminished from historic levels. At the same time, Virginia's watermen-farmers, utilizing production from a land-based hatchery, are providing additional quantities of quality shellfish to consumers.

This survey, in its 11th year, is intended to continue annual assessments with which to gauge growth and inputs in Virginia's hatchery-based shellfish aquaculture industry. This report is based upon an industry survey completed during the first quarter of 2017.

While these …


Virginia Fishery Resource Grant Program 2016, Virginia Fishery Resource Grant Program, Virginia Institute Of Marine Science Feb 2017

Virginia Fishery Resource Grant Program 2016, Virginia Fishery Resource Grant Program, Virginia Institute Of Marine Science

Reports

No abstract provided.


Harmful Algae Bloom Identification Laboratory For Virginia Shellfish Hatcheries And Nurseries, Kimberly S. Reece, Juliette L. Smith, Gail Scott, Bill Jones, Karen Hudson Jan 2017

Harmful Algae Bloom Identification Laboratory For Virginia Shellfish Hatcheries And Nurseries, Kimberly S. Reece, Juliette L. Smith, Gail Scott, Bill Jones, Karen Hudson

Reports

HAB Identification Laboratory Training Module

This laboratory is one part of a collaborative effort funded by NOAA Sea Grant to deliver timely and practical shellfish culture information to the commercial industry


Testing Raised Foot Lines In Virginia's Striped Bass Fishery: A Gear Based Method Of Reducing Sturgeon Interactions In Anchored Gillnets, Thomas J. Murray Nov 2016

Testing Raised Foot Lines In Virginia's Striped Bass Fishery: A Gear Based Method Of Reducing Sturgeon Interactions In Anchored Gillnets, Thomas J. Murray

Reports

Working with commercial fishermen and scientists, the project evaluated the efficacy of altering net designs to achieve reductions in incidental contacts with protected species while maintaining harvest efficiency. In addition project participants assisted in the transfer of the new gear technology to industry as a gear-based method to reduce sturgeon interactions in gillnets targeting striped bass. The intent was to raise the effective fishing depth (webbing) of anchored gillnets interactions with protected Atlantic sturgeon while not impacting direct harvest of striped bass, the target species. The gear was shown to not impact Catch Per Unit Effort (CPUE) of the directed …


Results For The 2016 Vims Industry Cooperative Surveys Of The Mid-Atlantic, Nantucket Lightship Closed Area, And Closed Area Ii Resource Areas, David B. Rudders, Sally Roman, Hunter Tipton Sep 2016

Results For The 2016 Vims Industry Cooperative Surveys Of The Mid-Atlantic, Nantucket Lightship Closed Area, And Closed Area Ii Resource Areas, David B. Rudders, Sally Roman, Hunter Tipton

Reports

No abstract provided.


Virginia Game Fish Tagging Program Annual Report 2015, Susanna Musick, Lewis Gillingham May 2016

Virginia Game Fish Tagging Program Annual Report 2015, Susanna Musick, Lewis Gillingham

Reports

Through 2015, the Virginia Game Fish Tagging Program has maintained a 20-year database of records for tagged and recaptured fish. The program is a cooperative project of the Virginia Saltwater Fishing Tournament (under the Virginia Marine Resources Commission-VMRC) and the Virginia Institute of Marine Science (VIMS) of the College of William and Mary (under the VIMS Marine Advisory Program).


Results For The 2015 Vims/Industry Cooperative Survey Of The Mid-Atlantic Sea Scallop Resource Area, David Rudders, Sally Roman Mar 2016

Results For The 2015 Vims/Industry Cooperative Survey Of The Mid-Atlantic Sea Scallop Resource Area, David Rudders, Sally Roman

Reports

No abstract provided.


Virginia Shellfish Aquaculture Situation And Outlook Report : Results Of The 2015 Virginia Shellfish Aquaculture Crop Reporting Survey, Karen Hudson, Thomas J. Murrary Mar 2016

Virginia Shellfish Aquaculture Situation And Outlook Report : Results Of The 2015 Virginia Shellfish Aquaculture Crop Reporting Survey, Karen Hudson, Thomas J. Murrary

Reports

The hatchery-based shellfish aquaculture industry in Virginia continues to grow adding significant value to the Commonwealth’s seafood marketplace. Today, watermen harvest both hard clams and oysters from the Commonwealth’s public resources, albeit at rates diminished from historic levels. At the same time, Virginia’s watermen-farmers, utilizing production from a land-based hatchery, are providing additional quantities of quality shellfish to consumers. This survey, in its 10th year, is intended to continue annual assessments with which to gauge growth and inputs in Virginia’s hatchery-based shellfish aquaculture industry. This report is based upon an industry survey completed during the first quarter of 2016. While …


Virginia Fishery Resource Grant Program 2015, Virginia Fishery Resource Grant Program Feb 2016

Virginia Fishery Resource Grant Program 2015, Virginia Fishery Resource Grant Program

Reports

No abstract provided.


Report On Red Crab Fishery: Harvesting Enhancements And By-Catch Utilization, Robert A. Fisher Jan 2016

Report On Red Crab Fishery: Harvesting Enhancements And By-Catch Utilization, Robert A. Fisher

Reports

No abstract provided.


Coherent Approach To Busycon/Busycotypus Fishery Management Along The Us Atlantic Seaboard Proceedings From The 16th International Conference On Shellfish Restoration (Icsr), December 10-13, 2014, Charleston Sc, Robert A. Fisher Dec 2015

Coherent Approach To Busycon/Busycotypus Fishery Management Along The Us Atlantic Seaboard Proceedings From The 16th International Conference On Shellfish Restoration (Icsr), December 10-13, 2014, Charleston Sc, Robert A. Fisher

Reports

No abstract provided.


Biotelemetry Of Cownose Rays In Chesapeake Bay: Habitat Use And Ray Movement, Robert A. Fisher Dec 2015

Biotelemetry Of Cownose Rays In Chesapeake Bay: Habitat Use And Ray Movement, Robert A. Fisher

Reports

No abstract provided.