Digital Commons Network^™

Short-Term Hooking Mortality Of Summer Flounder In New York And Virginia, Mark H. Malchoff, Jon A. Lucy

Reports

No abstract provided.

Organic Carbon Partitioning During Spring Phytoplankton Blooms In The Ross Sea Polynya And The Sargasso Sea, C.A. Carlson, Hugh Ducklow, Da Hansell, Walker O. Smith Jr.

VIMS Articles

In this study we evaluate the partitioning of organic carbon between the particulate and dissolved pools during spring phytoplankton blooms in the Ross Sea, Antarctica, and the Sargasso Sea. As part of a multidisciplinary project in the Ross Sea polynya we investigated the dynamics of the dissolved organic carbon (DOC) pool and the role it played in the carbon cycle during the 1994 spring phytoplankton bloom. Phytoplankton biomass during the bloom was dominated by an Antarctic Phaeocystis sp. We determined primary productivity (PP; via H14CO3, incubations), particulate organic carbon (POC), bacterial productivity (BP; via [3H]thymidine incorporation), and DOC during two …

Application Of A Tidal Prism Water Quality Model To Virginia Small Coastal Basins: Poquoson River, Piankatank River, Cherrystone Inlet And Hungars Creek, Albert Y. Kuo, Arthur J. Butt, Sung-Chan Kim, Jing Lin

Reports

No abstract provided.

A Comparison Of Size Selectivity And Relative Efficiency Of Sea Scallop Trawls And Dredges, David Rudders, William D. Dupaul, James E. Kirkley

Reports

No abstract provided.

Perkinsus Marinus Tissue Distribution And Seasonal Variation In Oysters Crassostrea Virginica From Florida, Virginia And New York, Lm Oliver, Ws Fisher, Se Ford, Lm Ragone Calvo, Em Burreson, Et Al

VIMS Articles

Perkinsus marinus infection intensity was measured in eastern oysters Crassostrea virginica collected in October and December 1993, and March, May, and July 1994 from 3 U.S. sites: Apalachicola Bay (FL), Chesapeake Bay (VA), and Oyster Bay (Mr'). Gill, mantle, digestive gland. adductor muscle, hemolymph, and remaining tissue (including gonadal material and rectum) were dissected from 20 oysters from each site at each collection time. Samples were separately diagnosed for P. marin us infections by incubation in Ray's Fluid Thioglycollate Medium (RFTM) and subsequent microscopic quantification of purified enlarged hypnospores. At all sampling times and sites, average P. marinus infection intensity …

Molecular Insights Into The Population Structures Of Cosmopolitan Marine Fishes, John Graves

VIMS Articles

Many marine fishes are cosmopolitan, occurring in continuous (e.g., circumtropical) or discontinuous (e.g., antitropical) distributions. Little is known of the genetic basis of population structure of these species, even though several support extensive fisheries. To develop a database that would facilitate comparison of the population structures among cosmopolitan fishes we consistently included restriction fragment length polymorphism (RFLP) analysis of mitochondrial DNA (mtDNA) as a common approach to our investigations of these species. This article presents a review of those analyses. Considerable intra`specific genetic variation was revealed within all cosmopolitan marine species. Continuously distributed species displayed population structures ranging from a …

Histopathological Alterations Associated With Perkinsus Spp. Infection In The Softshell Clam Mya Arenaria, Sm Mclaughlin, M Faisal

VIMS Articles

Softshell clams (Mya arenaria) collected from the Chester River in the upper Chesapeake Bay showed the presence of Perkinsus spp, in similar to 12 % (28/240) Of clams examined. The infection seems to run a mild course with the host prevailing in encapsulating invading parasites. The gills appear to be the major site of infection, however, the parasite was also found in the digestive gland, gonads, and kidneys and occasionally in the tissue and sinuses of adductor muscles. Typically, clusters of protozoal cells were embedded in on amorphous PAS-positive substrate and were surrounded by one or more layers of granulocytes. …

On The Frequency Of Eusociality In Snapping Shrimps (Decapoda : Alpheidae), With Description Of A Second Eusocial Species, Je Duffy

VIMS Articles

Recently, the Caribbean snapping shrimp Synalpheus regalis was shown to be eusocial by the criteria historically used for honeybees, ants, and termites, i.e., colonies contain a single reproducing female and a large number of non-breeding "workers." This finding prompted a reexamination of several previously puzzling reports of unusual population structures in other Synalpheus species. New collections, and observations made by students of this genus over the last century, suggest that several sponge-dwelling Synalpheus species similarly exhibit overlapping generations and monopolization of reproduction by a few individuals, and thus that these species may also be eusocial according to classical entomological criteria. …

Eastern Shore Laboratory, Virginia Institute Of Marine Science, College Of William And Mary, Mark Luckenbach

VIMS Articles

The Virginia Institute of Marine Science (VIMS) Eastern Shore Laboratory (ESL) is located in the coastal village of Wachapreague, Virginia, on the landward margin of a mid-Atlantic barrier island-salt marsh-la goon system. The facility serves as both a field station in support of re search and teaching activities and as a site for resident research in coastal ecology and aquaculture. By virtue of its access to the unique coastal habi tats, excellent water quality, and an extensive seawater laboratory, the fa cility affords educational and re search opportunities not available elsewhere within the region.

Prevalence And Distribution Of Qpx, Quahog Parasite Unknown, In Hard Clams Mercenaria Mercenaria In Virginia, Usa, Lm Ragone Calvo, Jg Walker, Em Burreson

VIMS Articles

In July 1996, the Virginia Institute of Marine Science initiated a sampling program to examine wild and cultured hard clams Mercenaria mercenaria for QPX, Quahog Parasite Unknown, a protistan parasite associated with severe mortalities of hard clams in localized areas in maritime Canada and Massachusetts, USA. The sampling program set out to seasonally monitor wild clams from one site, James River, Virginia, and cultured clams from 2 sites, Chincoteague Bay and Mattawoman Creek, Virginia. Histological examination of initial samples revealed 8% prevalence of the parasite in 1-2 yr old cultured clams in Chincoteague Bay. This is the first documentation of …

Ontogenetic Diet Shifts In Nassau Grouper: Trophic Linkages And Predatory Impact, Db Eggleson, Jj Grover, Rom Lipcius

VIMS Articles

Understanding which fauna and flora from seagrass beds serve as primary food for reef-based commuters is critical in defining trophic linkages between shallow-water habitats of tropical oceanic regions. Although numerous studies have documented the relative importance of crustaceans in the diet of reef fishes associated with tropical seagrass meadows, it is unknown if trophic importance corresponds to a significant effect on prey distribution and abundance patterns. We quantified size-specific diet of juvenile Nassau grouper (Epinephelus striatus) inhabiting natural and artificial patch reefs, and manipulated the density of artificial patch reefs (0, 8, and 16 patch reefs per ha) to examine …

Continuing Trophic Studies On Constructed “Restored” Oyster Reefs, Roger Mann, Juliana M. Harding

Reports

No abstract provided.

Effects Of Wind Speed And Particulate Matter Source On Surface Microlayer Characteristics And Enrichment Of Organic Matter In Southern Chesapeake Bay, Kewen Liu, Rebecca M. Dickhut

VIMS Articles

Surface microlayer (SM) samples were collected with a rotating cylinder sampler from the York and Elizabeth River estuaries of lower Chesapeake Bay bimonthly from May 1994 through June 1995. Two intensive samplings were also conducted in the York River during different seasons: one in December 1994 and another during June 1995. Four SM samples were collected during each intensive sampling within 4 days. All the samples were analyzed for total suspended particulates (TSP), particulate nitrogen (PN), particulate organic carbon (POC) and dissolved organic carbon(DOC). The thickness of the SM was observed to decrease linearly with increased wind speed. TSP and …

Meadow Beauty Rhexia Mariana L., 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 ident

Juvenile Finfish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Series Volume 1997, Patrick J. Geer

Reports

The Virginia Institute of Marine Science (VIMS) has conducted a trawl survey dating back to 1955. Over the years methods and objectives have varied according to funding sources and state and/or federal mandates. The present thrust of the program is to provide juvenile indices of relative abundance for recreationally, commercially, and ecologically important fish and invertebrates. These measures of juvenile abundance are widely used as a key element in the management of the Atlantic States' coastal fishery resources. Estimates of juveniles ( age-0) have proven to be a reliable and early indicator of future year-class strength. A review of previously …

Development And Implementation Of A Catch And Effort Data Collection System For Monitoring Trends In Fishing Success On Virginia's Artificial Fishing Reefs, 1987-1988, John A. Lucy, Charles L. Barr, William D. Dupaul

Reports

The basic objective of the study was to identify a core population of recreational fishermen owning private boats and fishing one or more Virginia artificial reef sites (Fig. 1) with some degree of regularity (making a minim4m of two to three reef trips per season). This developing and expanding population of fishing boat comers was to be sampled randomly, by either telephone or fishing log books, to determine fishing effort and catch rates characterizing trips made to specific reef sites during the 1987 fishing season. Examination of the resulting data would provide a basis for determining whether all, or only …

Status Of The Major Oyster Diseases In Virginia 1997 A Summary Of The Annual Monitoring Program, Lisa M. Ragone Calvo, Eugene M. Burreson

Reports

No abstract provided.

Rde Model: A Program For Simulating Water Wave Transformation For Harbor Planning, Jerome P.Y. Maa, T. W. Hsu, H. H. Hwung

Reports

No abstract provided.

Strata Formation On Margins (Strataform) S-60 And S-70 Sites Benthic Boundary Layer Tripod Data Report, December 1995 - March 1996, L. D. Wright, D. A. Hepworth, S. C. Kim, R. A. Gammisch

Reports

No abstract provided.

1997 Annual Awards, Virginia Institute Of Marine Science

Miscellaneous

The Annual Awards ceremony is an occasion in which new employees and volunteers are introduced, employee service is recognized and student and faculty awards are presented.

Marine Resource Bulletin Vol. 30, No. 1 & 2, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

Contents

Introduction 3

Scallop Medallions 4

Recent Sea Scallop Research 8

The Northwest Atlantic Sea Scallop Fishery: An Overview of Problems and Potential Solutions 12

The Bridge 17

Seasons of Change Bring A Change in Species For Virginia Sport Fishermen 18

New Publications 22

National Catch and Release Symposium 23

Breeding Bird Communities Of A Managed Forest Landscape In Coastal North Carolina: 1998 Report, M. D. Wilson, B. D. Watts

CCB Technical Reports

No abstract provided.

Virginia Institute Of Marine Science Programs And Services, Virginia Institute Of Marine Science

Miscellaneous

Programs and faculty, education and Institute support resources are described.

Aquaculture Genetics And Breeding Technology Center, Virginia Institute Of Marine Science

Miscellaneous

Brochure describing the activities, facilities and researchers of the Center.

Ethanol Preference In Peromyscus: An Association With Compromised Ethanol Metabolism, James Scott Lowman

Dissertations, Theses, and Masters Projects

No abstract provided.

Ecosystem Analysis Of Water Column Processes In The York River Estuary, Virginia: Historical Records, Field Studies And Modeling Analysis, Yongsik Sin

Dissertations, Theses, and Masters Projects

Analyses of EPA long-term datasets (1985--1994) combined with field studies and ecosystem model development were used to investigate phytoplankton and nutrient dynamics in the York River estuary. Analysis of the EPA dataset showed that algal blooms occurred during winter-spring followed by smaller summer blooms. Peak phytoplankton biomass during the winter-spring blooms occurred in the mid reach of the mesohaline zone whereas during the summer bloom it occurred in the tidal fresh-mesolialine transition zone. River discharge appears to be the major factor controlling the location and timing of the winter-spring blooms and the relative degree of potential nitrogen (N) and phosphorus …

Early Secondary Succession In The Bottomland Hardwood Forests Of Southeastern Virginia, David Randolph Spencer

Dissertations, Theses, and Masters Projects

No abstract provided.

Does Plant Diversity Control Animal Diversity?: An Experimental Approach, John Daniel Parker

Dissertations, Theses, and Masters Projects

No abstract provided.

Oyster Reef Broodstock Enhancement In The Great Wicomico River, Virginia, Melissa Southworth

Dissertations, Theses, and Masters Projects

No abstract provided.

Observations Of A Protistan Disease Similar To Qpx In Mercenaria Mercenaria (Hard Clams) From The Coast Of Massachusetts, Roxanna Smolowitz,, Dale Leavit, Frank Perkins

VIMS Articles

During the summer and fall of 1995, in clam aquaculture leases at two locations on the coast of Massachusetts, significant mortalities were observed to occur primarily in 112" role="presentation" style="font-size: 0.9px; display: inline-block; position: relative;">- to 2-year old hard clams (Mercenaria mercenaria,quahog) planted in the leases. Examination of hard clams from those leases suggested a parasite similar to QPX (Quahog Parasite Unknown), as described by Whyte, S. K., Cawthorn, R. J., and McGladdery, S. E. (1994,Can. Dis. Ag. Org.19, 129–136), was responsible for the poor condition of affected clams and the resulting high mortality. In …