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2000

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Full-Text Articles in Aquaculture and Fisheries

Evaluation Of Striped Bass Stocks In Virginia, Monitoring And Tagging Studies, 1999-2003 Annual Report, 1 September 1999 - 31 October 2000, Philip W. Sadler, Robert E. Harris, John E. Olney, Robert J. Latour Dec 2000

Evaluation Of Striped Bass Stocks In Virginia, Monitoring And Tagging Studies, 1999-2003 Annual Report, 1 September 1999 - 31 October 2000, Philip W. Sadler, Robert E. Harris, John E. Olney, Robert J. Latour

Reports

To document continued compliance with Federal law, the Anadromous Fishes Program of the Virginia Institute of Marine Science (VIMS) has monitored the size and age composition, sex ratio and maturity schedules of the spawning striped bass stock in the Rappahannock River since December 1981 utilizing commercial pound nets and, since 1991, variable-mesh experimental gill nets. Spawning stock assessment was expanded to include the James River in 1994 utilizing 11 commercial fyke nets and variable-mesh experimental gill nets. The use of fyke nets was discontinued after 1997. In conjunction with the monitoring studies, tagging programs have been conducted in the James ...


Distribution And Impact Of The Oyster Parasite Bonamia Ostreae In Maine, And Its Detection Using Dna Probes, Ryan Carnegie Dec 2000

Distribution And Impact Of The Oyster Parasite Bonamia Ostreae In Maine, And Its Detection Using Dna Probes, Ryan Carnegie

Electronic Theses and Dissertations

Health management efforts in Maine related to the flat oyster (Ostrea edulis) parasite Bonamia ostreae are limited by a lack of knowledge of the parasite’s distribution and impact in both wild and cultured populations. This information would be more readily obtainable with improved diagnostic tools. The objectives of this dissertation were to design sensitive and specific DNA probes for detection of B. ostreae; to assess the prevalence and intensity of parasite infections in wild oyster populations in Maine; and to evaluate growth and mortality of cultured oysters in the Damariscotta River, where B. ostreae is enzootic. A polymerase chain ...


A Review Of Shellfish Restoration As A Tool For Coastal Water Quality Management., Michael A. Rice Nov 2000

A Review Of Shellfish Restoration As A Tool For Coastal Water Quality Management., Michael A. Rice

Michael A Rice

In many areas, coastal residents and others oppose establishment of bivalve molluscan aquaculture projects on the basis of perceived negative environmental impacts. Often overlooked are positive environmental impacts of shellfish aquaculture that can potentially mitigate the impacts of other anthropogenic activities. Filter feeding by populations of bivalve mollusks is reviewed with respect to their ability to act as an estuarine filter, increase clarity of coastal waters and facilitate the removal of nitrogen and other nutrients from eutrophic coastal waters. Most species of cultured bivalve mollusks clear particles from waters at rates of 1 to 4 L/h, and populations of ...


Results Of Commercial Sea Scallop Survey In The Virginia Beach Closed Area September 2000, William D. Dupaul, David B. Rudders, Paul J. Rago Nov 2000

Results Of Commercial Sea Scallop Survey In The Virginia Beach Closed Area September 2000, William D. Dupaul, David B. Rudders, Paul J. Rago

Reports

This report presents the results of the commercial survey of the Virginia Beach Closed Area. The survey was conducted aboard the commercial sea scallop vessel F IV Alice Amanda from Hampton VA. Sampling began September 19, 2000 and was completed September 22, 2000.


Effects Of Blood Extraction On The Mortality Of The Horseshoe Crab, Limulus Polyphemus, Elizabeth A. Walls, Jim Berkson Oct 2000

Effects Of Blood Extraction On The Mortality Of The Horseshoe Crab, Limulus Polyphemus, Elizabeth A. Walls, Jim Berkson

Virginia Journal of Science

Horseshoe crabs (Limulus polyphemus) are bled by biomedical companies for the extraction of Limulus Amoebocyte Lysate (LAL), a clotting agent used in the detection of endotoxins. In 1998, the Atlantic States Marine Fisheries Commission mandated that all biomedical companies collecting horseshoe crabs for the production of LAL study the horseshoe crab mortality rates resulting from the company's blood extraction process. BioWhittaker, a Cambrex Company is one of the largest producers of LAL in the world. During the summer of 1999, bled and unbled horseshoe crabs were transported from BioWhittaker's bleeding facility in Chincoteague, Virginia to the Virginia Seafood ...


Parental Care In Sphaerium Striatinum Lamarck: Evidence For Retention Of Competent Offspring, Mark Beekey, Ronald H. Karlson, Alyse R. Greenberg Oct 2000

Parental Care In Sphaerium Striatinum Lamarck: Evidence For Retention Of Competent Offspring, Mark Beekey, Ronald H. Karlson, Alyse R. Greenberg

Biology Faculty Publications

The timing of offspring release is a fundamental turning point in the life history of any organism. It represents the end to many of the most costly forms of parental care (e.g., provisioning of nutrients for developing eggs and zygotes) and the beginning of an independent life for the offspring. Generally temporal variation in this event is attributed to a variety of physiological and evolutionary trade-offs. Here we examine the retention of offspring in the freshwater clam Sphaerium striatinum Lamarck. Brooded offspring are typically not released into the environment until they are 4.0 mm shell length (SL). We ...


Phytosociological Analysis Of Restored And Managed Grassland Habitat Within An Urban National Park, John T. Tanacredi Ph.D., Andrew M. Greller, Celestine Durando, Leslie F. Marcus, D. Siril A. Wijesundara, Michael D. Byer, Robert Cook Oct 2000

Phytosociological Analysis Of Restored And Managed Grassland Habitat Within An Urban National Park, John T. Tanacredi Ph.D., Andrew M. Greller, Celestine Durando, Leslie F. Marcus, D. Siril A. Wijesundara, Michael D. Byer, Robert Cook

Faculty Works: CERCOM

Floyd Bennett Field (FBF), 579 ha in extent, is a division of Gateway National Recreation Area. It is the site of a former airfield, constructed by filling salt marshes with dredged materials. Except for the portion known locally as the “North Forty,” all sections of FBF have been cut over to maintain low vegetation. A grassland management plan (GRAMP) for 165 ha was initiated in 1986, to maintain habitats for open-country birds. Over the next few years, encroaching woody vegetation was removed manually and mechanically from the management area. Since then, it has been maintained as a grassland and receives ...


Juvenile Fish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Volume 1999, Wendy A. Lowery, M. Todd Mathes, Patrick J. Geer Oct 2000

Juvenile Fish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Volume 1999, Wendy A. Lowery, M. Todd Mathes, Patrick J. Geer

Reports

This report summarizes data collected by the Virginia Institute of Marine Science (VIMS) monthly trawl survey cruises for January to December 1999. The trawl survey is a long-term, broad scope monitoring program. Its primary goal is to monitor juvenile abundance for marine and estuarine finfish and invertebrates. A major objective is to provide annual indices of juvenile abundance for recreationally, commercially, and ecologically important species of sufficient accuracy and precision for both immediate resource management needs and long-term understanding of environmental influences on fishery resources. A second important product of this effort is the documentation and monitoring of habitat utilization ...


Environmental Finance Charette, Hyannis Park On Lewis Bay: A Case Study, New England Environmental Finance Center, Environmental Finance Center Of University Of Maryland Sep 2000

Environmental Finance Charette, Hyannis Park On Lewis Bay: A Case Study, New England Environmental Finance Center, Environmental Finance Center Of University Of Maryland

Water

The town of Yarmouth currently has a $30 million septic sludge treatment plant and transport lines in place. The vast majority of the dwellings and businesses in the Hyannis Park area are on septic systems that are viable and Title 5 compliant, regardless of age. Conventional, "non-failing" septic systems, however, were never intended to remove form their effluent nutrients such as nitrogen. These have become recognized as an environmental threat only as our understanding of the impacts of excess nutrients on ecosystems has increased in recent decades.


Results Of Commercial Sea Scallop Survey In The Hudson Canyon South Closed Area, William D. Dupaul, David B. Rudders, Paul J. Rago Sep 2000

Results Of Commercial Sea Scallop Survey In The Hudson Canyon South Closed Area, William D. Dupaul, David B. Rudders, Paul J. Rago

Reports

This report presents the results of the commercial survey of the Hudson Canyon Closed Area. The survey was conducted aboard the FN Alice Amanda from June 8-15, 2000. A systematic grid design was utilized with survey stations located approximately 5 nm apart (Figure l ). Survey stations were located both inside and outside the boundaries of the closed area. Additional stations were added along the western, northern ru1d southern boundaries in an attempt to resolve the boundary effects on sea scallop abundance and size distribution. Survey tows were l O minutes in duration at a speed of 4.5-5.0 kts ...


Tb177: Evaluation Of An Experimental Filter Medium For Water Re-Use Systems, John Riley, David Cole, Robert Bayer Sep 2000

Tb177: Evaluation Of An Experimental Filter Medium For Water Re-Use Systems, John Riley, David Cole, Robert Bayer

Technical Bulletins

This report describes the development and testing of a new material for use as a filter medium in recirculating aquaculture systems and other water quality control situations. The material consists of a combination of activated carbon and a hydrophilic urethane foam in a homogeneous matrix. Its physical properties relevant to filtration were determined. It was then tested for its ability to remove various dissolved organic compounds and inorganic nitrogenous compounds in the form of a synthetic waste-water containing ammonia and nitrite. Finally it was subjected to long-term use in the biofilter of a fish culture system. It proved to be ...


Evaluating The Recruitment Of American Eel, Anguilla Rostrata, To The Potomac - Spring 2000 : March 2000 - June 2000, Patrick J. Geer, Julie A. Weeder, Steven Hammond, Rudolph Lukacovic Sep 2000

Evaluating The Recruitment Of American Eel, Anguilla Rostrata, To The Potomac - Spring 2000 : March 2000 - June 2000, Patrick J. Geer, Julie A. Weeder, Steven Hammond, Rudolph Lukacovic

Reports

Measures of juvenile recruitment success have long been recognized as a valuable fisheries management tool. In the Chesapeake Bay, these measures have provided reliable indicators for future year class strength for blue crabs (Lipcius and van Engel, 1990), striped bass (Goodyear, 1985), and several other recreationally important fishes (Geer and Austin, 1999).

The American eel, Anguilla rostrata, is a valuable commercial species along the entire Atlantic coast from New Brunswick to Florida. Landings along the U.S. Atlantic coast have varied from 290 MT in 1962 to a high of 1600 MT in 1975 (NMFS, 1999). In recent years there ...


Preliminary Results Of Commercial Sea Scallop Survey In The Hudson Canyon South Closed Area June 2000, William D. Dupaul, David B. Rudders, Paul J. Rago Jul 2000

Preliminary Results Of Commercial Sea Scallop Survey In The Hudson Canyon South Closed Area June 2000, William D. Dupaul, David B. Rudders, Paul J. Rago

Reports

This report presents the preliminary results of the commercial survey of the Hudson Canyon Closed Area. The survey was conducted aboard the FN Alice Amanda from June 8-15, 2000. A systematic grid design was utilized with survey stations located approximately 5 nm apart (Figure 1). Survey stations were located both inside and outside the boundaries of the closed area. Additional stations were added along the western, northern and southern boundaries in an attempt to resolve the boundary effects on sea scallop abundance and size distribution. Survey tows were 10 minutes in duration at a speed of 4.5-5.0 kts ...


Monitoring Relative Abundance Of American Shad In Virginia's Rivers Annual Report 1999, John E. Olney Sr., John M. Hoenig Jul 2000

Monitoring Relative Abundance Of American Shad In Virginia's Rivers Annual Report 1999, John E. Olney Sr., John M. Hoenig

Reports

A moratorium on the taking of American shad (Alosa sapidissima) in the Chesapeake Bay and its tributaries was established by the Virginia Marine Resources Commission (VMRC) beginning 1 January 1994. The prohibition applied to both recreational and commercial fishers. The moratorium was imposed at a time when commercial catch rates of American shad in Virginia's rivers were experiencing declines. Data from the commercial fishery were the best available for assessing the status of individual stocks. Catch-per-unit-effort (CPUE) data were compiled from logbooks that recorded landings by commercial fishermen using staked gill nets at various locations throughout the middle reaches ...


Marine Resource Bulletin Vol. 32, No. 2, Virginia Sea Grant, Virginia Institute Of Marine Science Jul 2000

Marine Resource Bulletin Vol. 32, No. 2, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

CONTENTS

FEATURES

Virginia's Pot Fisheries by Sally Mills

Potting Black Sea Bass: An Eastern Shore Tradition by Charlie Petrocci

COMMERCIAL TRADES

Virginia Fisheries Resource Grants Benefit Oyster Fisheries by Tom Murray

Cobia Spawn in Captivity by Mike Oesterling

Update: Horseshoe Crab Research by Bob Fisher

RECREATION

Tagging Flounder & Red Drum by Jon Lucy

EDUCATION Diving Into Marine Education by Lisa Lawrence & Laura Rose

NEW PUBLICATIONS

ANNOUNCEMENTS

NATURALIST'S CORNER


The Crest, Summer 2000, Virginia Institute Of Marine Science Jul 2000

The Crest, Summer 2000, Virginia Institute Of Marine Science

Reports

Table of Contents:

  • VIMS Scientists Successfully Spawn Cobia
  • NMFS Faculty Position Established at VIMS
  • Scientists Discover New Species of Perkinsus
  • Researchers Discover New Pollutants Infiltrating Virginia Rivers
  • Sea Scallop Research Resumed in June
  • MARSH Project Will Help Save Tidal Wetlands
  • Virginia's Changing Coastal Community - Indicators of Change
  • New Pound-Net Design Spares Young Fish
  • VIMS Scientist Studies Oysters in India
  • American Shad Focus of Unique Study
  • From the Coleman Bridge to Menai Bridge:
  • VIMS Professor Leads Field-Course in Wales
  • New Experimental Design Course for Teachers
  • Students Teaching Students
  • Horseshoe Crab Research is Timely
  • Award Winning Bridge Website Receives Renewed Funding ...


Clam Strain Registry, Tom Gallivan, Stan Allen Jun 2000

Clam Strain Registry, Tom Gallivan, Stan Allen

Reports

No abstract provided.


South Dakota Fisheries: An Evaluation Of A Chemical Immersion Marking Technique For Juvenile Yellow Perch And Application To A Stocking Assessment Of Marsh-Reared Yellow Perch Into Eastern South Dakota Lakes, Michael L. Brown, Todd St. Sauver, David O. Lucchesi, Jennifer L. Glib, M. Elizabeth Reinhart Jun 2000

South Dakota Fisheries: An Evaluation Of A Chemical Immersion Marking Technique For Juvenile Yellow Perch And Application To A Stocking Assessment Of Marsh-Reared Yellow Perch Into Eastern South Dakota Lakes, Michael L. Brown, Todd St. Sauver, David O. Lucchesi, Jennifer L. Glib, M. Elizabeth Reinhart

Natural Resource Management Faculty Publications

Currently, yellow perch Perca flavescens stocking needs in South Dakota are met by intensive trap and transfer of juvenile and adult perch. The success of these stocking efforts is largely undocumented, primarily due to problems in distinguishing yellow perch produced within the recipient water body and stocked perch. We first developed a transfer-tank marking protocol to determine immersion duration and optimal concentration of oxytetracycline (OTC) hydrochloride needed to produce an effective mark. Then we validated the protocol for adult yellow perch and determined the persistence of OTC in edible muscle tissue. Marking results indicated that satisfactory OTC marks may be ...


A Review Of Shellfish Restoration And Management Projects In Rhode Island, Michael A. Rice, April Valliere, Angela Caporelli May 2000

A Review Of Shellfish Restoration And Management Projects In Rhode Island, Michael A. Rice, April Valliere, Angela Caporelli

Michael A Rice

Shellfish management and restoration efforts in Rhode Island date back to the 19th century. From the late 1890s to the Second World War the Rhode Island Fisheries Commission operated a lobster hatchery in Wickford Harbor in response to a perceived decline in lobster catches in Narragansett Bay. Berried lobsters were collected, eggs hatched, larvae reared, and postlarval fifth stage juveniles were released into the bay. The project was discontinued primarily because of costs and a failure to demonstrate the efficacy of juvenile seeding in improving lobster catches. From the 1930s to the 1980s, there have been several similar efforts to ...


Comparison Of Larval Myomere Counts Among Species Of Nocomis In Virginia (Actinopterygii: Cyprinidae), Terre D. Green, Eugene G. Maurakis Apr 2000

Comparison Of Larval Myomere Counts Among Species Of Nocomis In Virginia (Actinopterygii: Cyprinidae), Terre D. Green, Eugene G. Maurakis

Virginia Journal of Science

Larval myomere counts of Nocomis platyrhynchus were made using a dissecting light microscope equipped with polarizing filters, and then compared to those of the three other species of Nocomis (Nocomis leptocephalus, Nocomis micropogon, and Nocomis raneyi) found in Virginia. Average preanal myomere counts for N. platyrhynchus (26.9) were significantly different from those of the other three species (N. raneyi =28.7; N. micropogon =26.0; and N. leptocephalus =25.9). This is especially important as larvae of N. leptocephalus, the only other species of Nocomis syntopic with N. platyrhynchus in the upper New River drainage, can now be distinguished ...


Feeding Habits Of Young-Of-Year Striped Bass, Morone Saxatilis, And White Perch, Morone Americana, In Lower James River, Va, Paul J. Rudershausen, Joseph G. Loesch Apr 2000

Feeding Habits Of Young-Of-Year Striped Bass, Morone Saxatilis, And White Perch, Morone Americana, In Lower James River, Va, Paul J. Rudershausen, Joseph G. Loesch

Virginia Journal of Science

A total of 188 young-of-year (YOY) striped bass, Morone saxatilis, and 199 YOY white perch, Morone americana, were collected by pushnet, seine and trawl during 24-hour periods from June through August, 1992 in lower James River, Virginia. The purpose was to identify prey and temporal and spatial feeding habits. Copepods were the most numerous prey of both species. Fishes and mysids comprised the largest volumetric percentage of diets of striped bass and white perch, respectively. Using an index of relative importance, leptodorids and copepods were the most important prey of striped bass and white perch, respectively. Both species shifted from ...


Economic Aspects Of Allocating Striped Bass Among Competing User Groups In Virginia, James Kirkley, Kenneth E. Mcconnell, Winnie Ryan Apr 2000

Economic Aspects Of Allocating Striped Bass Among Competing User Groups In Virginia, James Kirkley, Kenneth E. Mcconnell, Winnie Ryan

Reports

No abstract provided.


Salinity Tolerance Of Northern Redbelly Dace, Phoxinus Eos, As Assessed By A 96-Hour Acute Toxicity Test, Teresa Buck Apr 2000

Salinity Tolerance Of Northern Redbelly Dace, Phoxinus Eos, As Assessed By A 96-Hour Acute Toxicity Test, Teresa Buck

Life and Environmental Sciences Undergraduate Theses

Saline seeps are a known environmental hazard in eastern Montana. Identifying the salinity threshold value for fish using a 96-hour acute toxicity test will allow fish salinity tolerance to be taken into account when biotic integrity is used to determine the health of a waterbody. Acute toxicity tests were run 10 fish per 8 gallons of test solution in glass aquaria. The test solution was made using Na2SC>4 dissolved in carbon filtered city water and was renewed after 48 hours. Mortalities were counted and removed every 6 hours for the first 24 hours and every 12 hours there after ...


Marine Resource Bulletin Vol. 32, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science Mar 2000

Marine Resource Bulletin Vol. 32, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

CONTENTS

FEATURES

A Cobia By Any Other Name ...

Cobia Diet

Tagging Efforts Provide Insight

Cobia in the Bay: A Moving Target? by John Olney Jr.

The Old Fish Dock by Charlie Petrocci

OUTREACH & ANNOUNCEMENTS

NATURALIST'S CORNER


A White Paper On The Status And Needs Of Largemouth Bass Culture In The North Central Region, Roy C. Heidinger Mar 2000

A White Paper On The Status And Needs Of Largemouth Bass Culture In The North Central Region, Roy C. Heidinger

NCRAC White Papers

Largemouth bass (Micropterus salmoides) are the most sought-after freshwater sport fish in the United States. Largemouth bass are a member of the family Centrarchidae. Currently the genus Micropterus contains seven species. As part of the development of the new strategic plan, the North Central Regional Aquaculture Center (NCRAC) is trying to address the concern that the long-term focus of research goals and priorities may be lost because the NCRAC Board of Directors (Board) and the Industry Advisory Council memberships change over time. The Board in the June 1999 meeting directed that an updateable white paper be written on largemouth bass ...


A White Paper On The Status And Needs Of Walleye Aquaculture In The North Central Region, Robert C. Summerfelt Mar 2000

A White Paper On The Status And Needs Of Walleye Aquaculture In The North Central Region, Robert C. Summerfelt

NCRAC White Papers

Walleye has been recognized as a species with substantial aquaculture potential in the National Aquaculture Plan of 1983 (Joint Subcommittee on Aquaculture 1983). NCRAC's Industry Advisory Council and the Technical Committee, have also identified walleye one of the most promising species for aquaculture in the North Central Region (NCR) since the first joint meeting, May 1988.


A White Paper On The Status And Needs Of Baitfish Aquaculture In The North Central Region, Jeffrey L. Gunderson, Paul Tucker Mar 2000

A White Paper On The Status And Needs Of Baitfish Aquaculture In The North Central Region, Jeffrey L. Gunderson, Paul Tucker

NCRAC White Papers

Baitfish grown in many states in the North Central Region (NCR) contribute significantly to aquaculture in the region. Each year priority research areas are identified by the North Central Regional Aquaculture Center (NCRAC) Industry Advisory Council and presented in consultation with the Technical Committee to the NCRAC Board of Directors. Concern has emanated from among the various NCRAC constituencies that network plans could potentially lose focus over time and not always address the most critical factors limiting the economical and sustainable production of important species in the region. After discussions were held among members of the various committees and the ...


A White Paper On The Status And Needs Of Salmonoid Aquaculture In The North Central Region, Ronald E. Kinnunen Mar 2000

A White Paper On The Status And Needs Of Salmonoid Aquaculture In The North Central Region, Ronald E. Kinnunen

NCRAC White Papers

Salmonids are grown in many states in the North Central Region (NCR) with a major emphasis on rainbow trout production. The North Central Regional Aquaculture Center (NCRAC) Industry Advisory Council (IAC) designated salmonids as a high priority area and research on salmonids has been supported by NCRAC since 1990. Recently concern was raised over the long-term focus of NCRAC funded research and extension activities and at the June 1999 NCRAC Board of Directors (Board) meeting, it was decided that additional white papers should be developed to help strengthen various focus areas. As a result, the Board determined that one of ...


Seasonal Residence, Movement, And Activity Of Adult Tautog (Tautoga Onitis) In Lower Chesapeake Bay, John A. Lucy, M. D. Arendt Mar 2000

Seasonal Residence, Movement, And Activity Of Adult Tautog (Tautoga Onitis) In Lower Chesapeake Bay, John A. Lucy, M. D. Arendt

Reports

No abstract provided.


Annual Progress Report, North Central Regional Aquaculture Center Feb 2000

Annual Progress Report, North Central Regional Aquaculture Center

NCRAC Annual Progress Reports

No abstract provided.