Life Sciences Commons^™

Survival Of Escherichia-Coli And Salmonella Spp In Estuarine Environments, Mw Rhodes, Hi Kator

VIMS Articles

Survival of Escherichia coli and Salmonella spp. in estuarine waters was compared over a variety of seasonal temperatures during in situ exposure in diffusion chambers. Sublethal stress was measured by both selective-versus-resuscitative enumeration procedures and an electrochemical detection method. E. coli and Salmonella spp. test suspensions, prepared to minimize sublethal injury, were exposed in a shallow tidal creek and at a site 7.1 km further downriver. Bacterial die-off and sublethal stress in filtered estuarine water were inversely related to water temperature. Salmonella spp. populations exhibited significantly less die-off and stress than did E. coli at water temperatures of <10°C. Although the most pronounced reductions (ca. 3 log units) in test bacteria occurred during seasonally warm temperatures in the presence of the autochthonous microbiota, 102 to 104 test cells per ml remained after 2 weeks of exposure to temperatures of >15°C. Reductions …

Discocilia And Paddle Cilia In The Larvae Of Mulinia Lateralis And Spisula Solidissima (Mollusca: Bivalvia), Bernardita Campos, Roger L. Mann

VIMS Articles

The bivalve larval velum contains four bands of cilia: inner and outer preoral bands, an adoral band, and a postoral band. The preoral bands of compound cilia are generally considered to be used for both locomotion and food gathering. The adoral and postoral bands function in concert with the preoral bands in food gathering and transfer of food to the mouth. Cilia are usually described as cylindrical structures which taper to a blunt tip. Modified cilia with disc-shaped (discocilia) or pad dle-shaped ends have been recorded in several invertebrate species. Here, for the first time, we demonstrate the presence of …

A Study Of The Advantages And Disadvantages Of Virginia Assuming 404 Regulatory Authority Under The Federal Clean Water Act, N. Bartlett Theberge

Reports

No abstract provided.

A Documentation Of Virginia Trawl Surverys, 1955-1984, Listing Pertinent Variables: Date, Station Location, Gear, Vessel, Tow Direction, And Type Of Survey Volume V: Potomac River, Frank J. Wojcik, Willard A. Van Engel

Reports

No abstract provided.

A Documentation Of Virginia Trawl Surverys, 1955-1984, Listing Pertinent Variables: Date, Station Location, Gear, Vessel, Tow Direction, And Type Of Survey Volume Iii: James River- Including Burwell Bay And Three Oxbows, Frank J. Wojcik, Willard A. Van Engel

Reports

No abstract provided.

Evaluation Of Alternate Microbial Indicators Of Fecal Pollution In A Non-Point Source Impacted Shellfish Growing Area, Howard I. Kator, Martha Rhodes

Reports

No abstract provided.

Cross-Shoreface Suspended Sediment Transport : A Response To The Interaction Of Nearshore And Shelf Processes, Fall 1994 Duck, Nc Field Experiment, D. A. Hepworth, Carl T. Friedrichs, John Brubaker

Reports

Deployment : The tripods were assembled, tested and secured onboard the RIV Sea Diver, which left the Little Creek Amphibious Base in Norfolk, Virginia early on 26 September. While underway to the deployment site, the continuous surface water conductivity and temperature survey was run and several CTD casts were made. The tripods were deployed on 26 September and secured to the sea floor with sand anchors by VIMS divers. The R/V Sea Diver then began the series of on/off shore transects at the tripod deployment site for approximately 12 hours. The vessel returned to port on 27 September .

Recovery: …

Remote Sensing Of Offshore Water Mass Features: Present And Potential Benefits To Virginia's Recreational Fishery For Marlin And Tuna, David B. Eggleston

Reports

No abstract provided.

Chesapeake Bay Research Initiatives At The Virginia Institute Of Marine Science Of The College Of William And Mary : Accomplishments For The 1986-1988 Biennium, Virginia Institute Of Marine Science

Reports

This biennium report for 1986-1988 presents the accomplishments achieved through the Commonwealth's Chesapeake Bay Initiative for Research. In addition to those projects. the volume describes our progress on three additional initiatives funded by the General Assembly during the biennium: --Three-Dimensional Hydrodynamic Model --Wetlands Management --Estuarine Research Reserve System.

The Sea Turtles Of Virginia : With Notes On Identification And Natural History, John A. Musick

Reports

No abstract provided.

Chesapeake Bay Bibliography Thesaurus, Julia Wilcox, Susan Barrick

Reports

No abstract provided.

Nontraditional Marine Education Activities : A Planning Guide, Elizabeth A. Cornell

Reports

Field trips should be integral "learning from life" interactive experiences which are much more than accessory enrichment activities or frills. Field trips illustrate, expand upon and extend concepts and skills learned in the classroom and laboratory. For younger students, field trips may be ends in themselves, while in older students, the trip may be a means to an end. Older students benefit from the stimulation of a nontraditional experience such as a field trip in learning new concepts and practicing techniques (Falk and Balling, 1980; Falk, Martin and Balling, 1978).

A marine education field trip can range from exploring a …

A Documentation Of Virginia Trawl Surverys, 1955-1984, Listing Pertinent Variables: Date, Station Location, Gear, Vessel, Tow Direction, And Type Of Survey Volume Ii: York River System, Frank J. Wojcik, Willard A. Van Engel

Reports

No abstract provided.

The Imperilled Oyster Industry Of Virginia: A Critical Analysis With Recommendations For Restoration, William J. Hargis Jr., Dexter S. Haven

Reports

No abstract provided.

Chesapeake Bay Marine Environmental Assessment 1985 Annual Summary, Karen L. Kelly

Reports

No abstract provided.

The College Of William And Mary, School Of Marine Science, 1988-89 Program, College Of William And Mary, School Of Marine Science

Miscellaneous

Catalog for the Graduate program from the School of Marine Science at the College of William and Mary for the listed academic year.

Predator-Prey Dynamics Between The Blue Crab: Callineates Sapidus Rathbun, And Juvenile Oysters Crassostrea Virginica (Gmelin), David B. Eggleston

Dissertations, Theses, and Masters Projects

No abstract provided.

Fishery And Culture Of Selected Bivalves In Mexico: Past, Present And Future, Erik Baqueiro, Michael Castagna

VIMS Articles

This paper reviews the culture of selected bivalves of Mexico. Most species are utilized locally, but there is potential for some exports. The culture and fisheries of bivalves are often hampered by lack of information and restrictive regulations. Pinctada mazatlanica was grown for pearls and pearl shell production in the early 1900s. The methods used for its culture are reviewed. The culture of a few commercial species has shown encouraging results. Over 10,000 kilometers of coastal area with more than 1.5 million hectares of coastal lagoons and bays, plus a subtropical climate, give Mexico a great potential for the development …

Distribution Of Bivalve Larvae At A Frontal System In The James River, Virginia, Roger L. Mann

VIMS Articles

James River is the southernmost of the major subestuaries of the Chesapeake Bay, USA. A frontal system develops on the early flood tide in the Hampton Roads region of the lower James. This system, together with a cyclonic gyre in Hampton Roads, is in part responsible for partial retention of downstream-flowing water in the estuary and it's injection into deeper, upstream-flowing water. The role of the frontal system in retention of bivalve larvae in the James was investigated In a 2-part study: a field exammation of larval distr~bution versus depth along a transect across the front in relation to salinity …

Rehabilitation Of The Troubled Oyster Industry Of The Lower Chesapeake Bay, William J. Hargis Jr., Dexter S. Haven

VIMS Articles

After 1885 Virginia's lower Chesapeake Bay system produced more oysters per year than any other area in the United States and remained predominant until 1960. Since then she has surrendered supremacy as annual harvests of her troubled oyster industry have steadily declined. Numerous factors were responsible for the tremendous productivity of the lower Bay's oyster beds; a number have been involved in its decline. Natural events, such as the catastrophic epizootics of the early 1960's, continuing disease and predation, increased salinities of drought years and great freshets of tropical storms have contributed significantly to the reduction. Pollution and other man-related …

Nearshore Ichthyoplankton Associated With Seagrass Beds In The Lower Chesapeake Bay, Je Olney, Gw Boehlert

VIMS Articles

Estuaries serve as important nursery habitats for larvae and juveniles of many species of fishes and invertebrates. Within the estuary, however, partitioning may occur among main channel. mud flat, tidal creek, and vegetated habitats. In this study we describe the egg, larval, and juvenile fish assemblages in shallow areas of submerged aquatic vegetation (SAV) of the lower Chesapeake Bay and compare them with those over the adjacent, shallow sand habitat. Densities at night over all habitats were about 1 order of magnitude higher than daytime densities, and were highest in summer. The SAV habitats were not important spawning sites for …

Synchronous Emergence And Mass Migration In Juvenile Queen Conch, Aw Stoner, Rom Lipcius, Ls Marshall, At Bardales

VIMS Articles

No abstract provided.

Pipefish Foraging: Effects Of Fish Size, Prey Size And Altered Habitat Complexity, Ch Ryer

VIMS Articles

Laboratory experiments determined the effects of 2 levels of habitat complexity upon pipefish Syngnathus fuscus foraging for amphipods. Habitats were composed of equal densities of either narrow (low complexity) or wide (high complexity) leafed artificial seagrass. Response to habitat - as measured by rate of encounter with amphipods, probability of attack after encounter, probability of success after attack, and overall rate of amphipod consumption - was determined for combinations of 2 fish size classes and 3 amphipod size classes. Small fish did not respond to changes in habitat complexity, while large fish did. Large fish encountered fewer amphipods in the …

Subsurface Chlorophyll Maximum In August-September 1985 In The Climax Area Of The North Pacific, Rw Eppley, E Swift, Dg Redalje, Mr Landry, Lw Haas

VIMS Articles

No abstract provided.

Use Of Immunoassays In Haplosporidan Life Cycle Studies, Eugene M. Burreson

VIMS Books and Book Chapters

The development of mitigating measures for the major oyster diseases has been hindered by our poor understanding of the life cycles of the pathogens. Evidence from epidemiological studies and transmission experiments suggests that an intermediate host is present in the life cycle of Haplosporidium species. Immunoassay is a valuable tool for identifying parasite antigen in an intermediate host, and, because of the potential for stage-specific antigens, assays incorporating polyclonal antibodies may be more effective than assays incorporating monoclonal antibodies. Rabbit antibody against purified spores of Haplosporidium costale recognized spores in paraffin sections of oyster tissue , but the antibody did …

Oyster Shoal Survey - Spring 1988, James Whitcomb

Reports

This report summarizes data collected during 1988 in the Virginia portion of the Chesapeake Bay. The report focuses on the spring oyster survey in Virginia.

A Documentation Of Virginia Trawl Surverys, 1955-1984, Listing Pertinent Variables: Date, Station Location, Gear, Vessel, Tow Direction, And Type Of Survey Volume I: Chesapeake Bay, Frank J. Wojcik, Willard A. Van Engel

Reports

No abstract provided.

Comparative Analysis Of Sea Scallop Escapement/Retention And Resulting Economic Impacts, William D. Dupaul, Edward J. Heist, James E. Kirkley

Reports

During the months of June and September 1988, gear experiments were conducted aboard the F/V Carolina Dawn and Carolina Capes. The primary objective of the experiments was to assess the technical efficiency and size selectivity of 3.5-inch ring dredges relative to the current commercially-used 3.0-inch ring dredges. Secondary objectives were to analyze the economic and regulatory ramifications of using 3.5-inch ring dredges to control the age-at-capture and enhance the yield-per- recruit.

Public Oyster Shoal Survey - Fall 1988, Bruce Barber, James Whitcomb

Reports

This report summarizes data collected during 1988 in the Virginia portion of the Chesapeake Bay. The report focuses on the fall oyster survey in Virginia.

Phytoplankton, Nutrients, Macroalgae And Submerged Aquatic Vegetation In Delaware's Inland Bays, 1985-1986, Benedict Estuarine Research Laboratory., Delaware Department Of Natural Resources And Environmental Control

Reports

Data were collected in each of the three program elements, Phytoplankton and Nutrients, Macroalgae and Submerged Aquatic Vegetation, indicate that Delaware's Inland Bays are highly eutrophic systems. ...