Life Sciences Commons^™

Habitat Requirements For The Softshell Clam, Mya Arenaria In The Chesapeake Bay, Patrick Baker, Roger L. Mann

Reports

Large populations of softshell clams persist only in relatively shallow, sandy. mesohaline portions of Chesapeake Bay. These areas are mostly in Maryland, but can also occur in the Rappahannock River. Virginia. In some other portions of the bay, especially polyhaline portions. sparse populations of soft shell clams persist subtidally. Restricted populations exist intertidally.

Softshell clams grow rapidly in Chesapeake Bay, reaching commercial size in two years or less. They reproduce twice per year, in spring and fall, but probably only fall spawnings are important in maintaining population levels. Major recruitment events do not occur in most years. despite heavy annual …

Charles City County Tidal Marsh Inventory, Kenneth A. Moore, Sharon Dewing, Gene M. Silberhorn

Reports

No abstract provided.

An Evaluation Of At-Sea Handling Practices: Effects On Sea Scallop Meat Quality, Volume And Integrity, William D. Dupaul, Robert A. Fisher, James E. Kirkley

Reports

No abstract provided.

Color Image-Analyzed Fluorescence Microscopy: A New Tool For Marine Microbial Ecology, Ml Sieracki, Cl Viles

VIMS Articles

BACTERIA, cyanobacteria, protozoa and small eukaryotic phytoplankton are now known to be funda- mental components of marine planktonic ecosystems (Azam et al., 1983; Sieburth, 1984). These organisms have high potential growth rates, are efficient convert- ers of material and energy, and usually constitute most of the plankton biomass (Davis et al., 1985; Fuhrman et al., 1989). Their different trophic levels are often closely coupled. These characteristics require that experimental and sampling designs for studying the microbial populations incorporate appropriate (i.e., small) temporal and spatial scales. The corollary to this is that large numbers of samples must be taken. If these …

A 100-Year Sediment Budget For Chesapeake Bay, Carl H. Hobbs Iii, Jeffery P. Halka, Randall T. Kerhin, Michael J. Carron

Reports

Chesapeake Bay is a depositional basin that is filling from both ends and the sides. During the century ended in the mid-1950s between 1.0 x 109 and 2.92 x 109 metric tons of sediment accumulated in the bay. The bay's largest tributary, the Susquehanna River, is a major source of fine-grained sediments; its coarser load being trapped by dams. The continental shelf is the largest single source of sediment for the basin. A massive quantity of sand, perhaps as much of forty percent of the net deposition, enters the bay between the Virginia capes and works its way tens of …

Arrow Arum, Duck Corn Peltandra Virginica (L.) Kunth, Gene Silberhorn

Reports

The Wetland Flora Technical Report series provides concise information regarding the identification, growth habits, distribution, habitat, ecology and wetland indicator status for the title species. Illustrations are also included to aid in specimen identification.

On-Board Quality Control Preparing Mid-Atlantic Fisheries For The Future, Robert A. Fisher

Reports

The U.S. population is eating more seafood than at any time in the nation's history. Strong national and local marketing and consumer education programs have encouraged this increased consumption. AF, consumers become more knowledgeable about seafood products, and as sales respond to competition, high quality products will be the 1ule rather than the exception. This guide focuses on the very beginning of quality assurance, on-board handling.

Areas of focus for on-board quality control measures include vessel sanitation, icing-temperature control, harvesting techniques, on-deck handling, and storage. These procedures, outlined on the following pages, are in line with preliminary requirements being set …

Estimation Of Standing Crop Of Oysters In The James River, Virginia, Using Commercial Fishing Records : Final Report, Bruce J. Barber, Roger L. Mann

Reports

Virginia was the leading producer of oysters, Crassostrea virginica, as recently as the late 1950's, when landings of market oysters from the 243,000 acres of public grounds was about 700,000 bushels (Hargis and Haven, 1988). Beginning about 1960, a major decline in market oyster production occurred, principally the result of two oyster pathogens, Haplosporidium nelsoni (MSX) and Perkinsus marinus ( Dermo) . These pathogens have essentially decimated productive oyster grounds in the main stem of Chesapeake Bay as well as the lower portions of all the major rivers. Market oyster landings from public grounds had declined to 328,338 bushels in …

Map And Guide: Vims 50th Year Open House, Virginia Institute Of Marine Science

Miscellaneous

Welcome to the Virginia Institute of Marine Science/Sclwol of Marine Science of the College of William and Mary. VIMS began as the Virginia Fisheries Laboratory in 1940, /.ocated in Yorktown and lwused in what had been a filling station. Today, join us as we o,pen our doors to celebrate 50 years that have made VIMS the nation's premier academic institution dedicated to the study of estuaries and the coastal oceans.

Use this flyer as your tour guide.

Marine Pollution Impacts On Living Marine Resources, Herbert M. Austin

Reports

No abstract provided.

Richmond County Marsh Inventory, Walter I. Priest Iii, Sharon Dewing, Gene M. Silberhorn

Reports

No abstract provided.

Saltmeadow Hay, Spartina Patens (Aiton) Muhl, Gene M. Silberhorn

Reports

The Wetland Flora Technical Report series provides concise information regarding the identification, growth habits, distribution, habitat, ecology and wetland indicator status for the title species. Illustrations are also included to aid in specimen identification.

Early Life-History Implications Of Selected Carcharhinoid And Lamnoid Sharks Of The Northwest Atlantic, Steven Branstetter

VIMS Books and Book Chapters

The size of most newborn sharks makes them susceptible to predation from their own kind and other large fishes. In the northwestern Atlantic, juvenile nursery grounds can be generally classified according to whether or not the young are exposed to such predatory risk. Several related factors-breeding frequency, litter size, size at birth, early growth rate-may help offset early natural mortality. These factors are counterbalanced by the different species in several different ways, producing numerous early life history strategies. In general, slow growing species are either born at relatively large sizes or use protected nursery grounds, whereas faster growing species tend …

School Of Marine Science Graduate Program Catalog 1990-91, College Of William And Mary, School Of Marine Science

Miscellaneous

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

Eutrophication Of Lake Matoaka Assessment And Projection, Bruce Neilson, Gary F. Anderson, Martha Rhodes

Reports

No abstract provided.

Western North Atlantic Shark-Fishery Management Problems And Informational Requirements, Thomas B. Hoff, John A. Musick

VIMS Books and Book Chapters

The Mid-Atlantic Fishery Management Council (Council) has primary responsibility for the development ofihe Western North Atlantic Shark Fishery Management Plan (FMP). Currently, there is a consensus among the five East Coast Councils that an FMP for sharks should be prepared. The current concerns focus on many of the same issues that were germane a decade ago when a shark FMP was initiated and then halted mainly because of inadequate information. These issues include 1) an expanded, nondiscriminant, commercial longline fishery ; (2) an existing and rapidly expanding recreational fishery; (3) concern for the extensive waste which occurs from both recreational …

A Fisherman's Guide: Getting The Most Out Of Monkfish, Robert A. Fisher, Bill Dupaul

Reports

No abstract provided.

Short-Run Situation Outlook: Mid-Atlantic Sea Scallops, James Kirkley, William Dupaul

Reports

No abstract provided.

Heating Soft Crab Shedding Systems, Mike Oesterling

Reports

The molting of blue crabs, and ultimately soft shell crab production, is regulated by water temperature. A certain threshold or minimum water temperature must be reached before blue crabs begin to molt (shed). Although crabs begin shedding at temperatures in the mid-60'sF (18-19°C), water temperatures near 70°F (21°C) are optimum for active shedding. As the water temperature increases, the time required for a crab to progress through the stages leading to molting decreases (the time needed to go from a white-line, to a pink-line and finally red-line crab). The time needed for a complete molt--for a soft crab to exit …

Recruitment And Growth Of Oysters On Shell Clutch Planted At Monthly Intervals (May-August 1986) At Jones Shore Basin The Lower Potomac River, Maryland, Reinaldo Morales-Alamo, Roger L. Mann

Reports

No abstract provided.

Status Of The Major Oyster Diseases In Virginia 1989 A Summary Of The Annual Monitoring Program, Eugene M. Burreson

Reports

No abstract provided.

Research, Education And "Proper Extension Work" : The First 50 Years Of The Virginia Institute Of Marine Science, William J. Hargis Jr.

Miscellaneous

No abstract provided.

Marine Resource Bulletin Vol. 22, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

Contents

Introduction

Beaches: Dynamic and Transformed Daily

An Inhospitable Environment

Over 5,000 Miles of Tidal Shoreline

Waterfront Redevelopment Mazimizing the Use of Urban Coastline

Behind the Dunes

Shifting Sand

Educating Future Decision Makers

Replenishing the Shoreline

Hurricanes

People to People

Marine Notes

Vims 50th Year, Virginia Institute Of Marine Science

Miscellaneous

Brochures of the celebration program and map and guide of open house activities.

"Welcome to the Virginia Institute of Marine Science/School of Marine Science of the College of William and Mary. VIMS began as the Virginia Fisheries Laboratory in 1940, located in Yorktowm and housed in what had been a filling station. Today, join us as we open our doors to celebrate 50 years that have made VIMS the nation's premier academic institution dedicated to the study of estuaries and the coastal oceans."

Thyroid Histology And Reproductive Function In The Prairie Deer Mouse And In The White-Footed Mouse, Jennifer M. Dolan

Dissertations, Theses, and Masters Projects

No abstract provided.

Eastern Atlantic Tonguefishes (Symphurus: Cynoglossidae, Pleuronectiformes), With Descriptions Of Two New Species, Thomas A. Monroe

VIMS Articles

Six species of symphurine tonguefishes, including two previously undescribed, from the Mediterranean Sea and eastern Atlantic Ocean (including the Azores, Madeira, Ascension, and St. Helena) are described and illustrated.

Systematics Of The Pearlfishes (Pisces, Carapidae), Df Markle, Je Olney

VIMS Articles

A review of taxonomy, anatomy, ontogeny, ecology, and phylogeny of the ophidiiform family Carapidae was conducted using over 2,300 larval, juvenile and adult specimens. A cladistic classification based on swimbladder morphology, developmental and osteological characters of the vertebral column, fins, pectoral and pelvic girdles, gill arches, ethmoid, jaws, and habitat is presented. A total of 31 species (6 new names and one unnamed larval form) in seven genera are recognized in two subfamilies. A species previously assigned to Echiodon is made the type of a new monotypic genus. Species of the tribe Carapini are rearranged in the genera Carapus and …

Settlement Of Oysters, Crassostrea Virginica (Gmelin, 1791), On Oyster Shell, Expanded Shale And Tire Chips In The James River, Virginia, Roger L. Mann, Bruce J. Barber, James P. Whitcomb, Kenneth S. Walker

VIMS Articles

The effectiveness of oyster shell, expanded shale, and tire chips as substrates for settlement of oysters, Crassostrea virgi11ica (Gmelin), was compared at four locations in the James River, Virginia, over three two-week time intervals in August and September, 1988. Only differences between substrate were significant (P < 0.001). Over all locations and time intervals, a significantly higher (P < 0.001) proportion of total oyster settlement occurred on oyster shell (63.8%) than on either tire chips (22.1 %) or expanded shale (14.2%).

Small-Scale Organism Distributions And Patterns Of Species Diversity: Evidence For Positive Interactions In An Estuarine Benthic Community, Linda C. Schaffner

VIMS Articles

No abstract provided.

Population Dynamics Of Young-Of-The-Year Striped Bass, Morone Saxatilis, Populations, Based On Daily Otolith Increments, Lisa L. Kline

Dissertations, Theses, and Masters Projects

Validation of daily increment deposition in otoliths of juvenile striped bass up to 80 days of age was provided through sequential sacrifice of known age hatchery-reared fish in 1987 and 1989, and through tetracycline marking of otoliths of cage-cultured striped bass in 1989. Ages of fish between 80-110 days old were consistently underestimated by 1-3 growth increments. Known age juvenile striped bass were raised in the laboratory in 1989 under controlled environmental conditions. These experiments provided evidence of an endogenous circadian rhythm controlling daily increment deposition in juvenile striped bass otoliths. Juvenile striped bass were collected in the 4 Virginia …