Life Sciences Commons^™

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

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. …

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 …

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

Reports

No abstract provided.

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 …

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.

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 …

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.

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

Miscellaneous

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

Variation Between Sparrows In The Ability To Extract Buried Seed, David Michael Whalen

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.

The Phylogeny Of Coleoid Cephalopods Inferred From Molecular Evolutionary Analyses Of The Cytochrome C Oxidase I, Muscle Actin, And Cytoplasmic Actin Genes, David Bruno Carlini

Dissertations, Theses, and Masters Projects

Although the fossil record of early cephalopods is rich and demonstrates the dominance of the group in Paleozoic times, the mainly soft-bodied coleoids (Cephalopoda: Coleoidea) are poorly represented. Therefore, little is known of the evolutionary history of coleoids through paleontology and current classifications of the subclass are based primarily on the morphology of extant representatives. A molecular phylogenetic analysis of the Coleoidea was therefore warranted. Phylogenetic relationships within the Coleoidea were constructed using molecular sequence data from one mitochondrial and two nuclear genes: cytochrome c oxidase I (COI) and two unlinked actin genes (Actin I and Actin II, respectively). A …

Comparative Evolution Of Molecular Markers: An Analysis Of Genetic Variation Within The Blue Marlin (Makaira Nigricans), Vincent Patrick Buonaccorsi

Dissertations, Theses, and Masters Projects

Blue marlin diversity was assessed at mtDNA, scnDNA, microsatellite DNA, and allozyme molecular markers. Hierarchical analysis of molecular variance (AMOVA) revealed that most genetic variation was maintained within populations, with a non-significant fraction attributable to variation among temporal replicates and between locations within oceans. In contrast, inter-ocean divergence was highly significant for a majority of loci within each marker class. Previous studies of mitochondrial DNA (mtDNA; n = 104) genetic variation within the blue marlin revealed two distinct clades of haplotypes, one of which was present only in the Atlantic (the 'Atlantic clade'), at a frequency of 40% &(F\sb{lcub}st{rcub}& = …

Caribbean Spiny Lobster And Their Molluscan Prey: Are Top-Down Forces Key In Structuring Prey Assemblages In A Florida Bay Seagrass System, Martha Nizinski

Dissertations, Theses, and Masters Projects

Relative importance of predator-prey dynamics and several environmental variables in structuring gastropod and bivalve diversity and distribution was investigated in the subtropical seagrass and macroalgal community of Florida Bay, a highly productive system and primary nursery and foraging ground for finfish and invertebrate predators, including the numerically dominant Caribbean spiny lobster, Panulirus argus. The molluscan assemblage, a primary food source for P. argus in particular, is speciose (75 gastropod and 25 bivalve species) and a significant component of epifaunal and infaunal invertebrate assemblages within Florida Bay. Two experimental areas, located within separate basins and each comprised of two experimental sites, …

Evaluation Of Toxicity Of Oxytetracycline On Growth Of Captive Nurse Sharks, Ginglymostoma Cirratum, James Gelsleichter, Enric Cortes, Charles A. Manire, R. Hueter, John Musick

VIMS Articles

No abstract provided.

Tagging And Habitat Utilization Of Juvenile Summer Flounder, Paralichthys Dentatus, Richard Thomas Kraus

Dissertations, Theses, and Masters Projects

No abstract provided.

In Vitro Propagation Of Two Perkinsus Species From The Softshell Clam Mya Arenaria, Sm Mclaughlin, M Faisal

VIMS Articles

Two continuous, axenic cultures of Perkinsus spp. (H49 and G117)were obtained from the softshell clam Mya arenaria collected from Swan Point in the Chester River, Chesapeake Bay (Maryland).

Isolate H49 was obtained from the hemolymph of a heavily infected clam. Except for their larger size, H49 trophozoites and schizonts exhibited the characteristic morphology of Perkinsus marinus and divided by schizogony. Isolate G117 was obtained from a combined gill/palp sample of a moderately infected clam. Unlike H49, vegetative forms (trophozoites and schizonts) of G117 were present along with prezoosporulation stages in the same culture. In culture, G117 cells multiplied by both …

Global Phylogeography Of Mackerels Of The Genus Scomber, Daniel Scoles, Bruce B. Collette, John Graves

VIMS Articles

Inter- and intraspecific genetic relationships among and within three species of mackerels of the genus Scomber were investigated by restriction site analysis of the whole mitochondrial (mt) DNA genome and direct sequence analysis of the mitochondrial cytochrome b gene. A total of 15 samples, averaging 19 individuals each, were collected from geographically isolated populations throughout the ranges of S. scombrus (two samples), S, australasicus (five samples), and S. japonicus (eight samples). Restriction site analysis with 12 restriction enzymes revealed substantial genetic variation within each species. Sample haplotype diversities ranged from 0.28 to 0.95, and nucleotide sequence diversities from 0.13% to …

Virginia Game Fish Tagging Program Annual Report 1997, C.M. Bain Iii, John A. Lucy, M. D. Arendt

Reports

The Virginia Game Fish Tagging Program (VGFI'P), a cooperative project of the Virginia Marine Resources Commission and the Virginia Institute of Marine Science (VIMS), set records for participation, fish tagged, and fish recaptured during its third year of operation.

The Status Of Virginia's Public Oyster Resource 1997, Reinaldo Alonzo-Morales, Roger L. Mann

Reports

This report summarizes data collected during 1997 in the Virginia portion of the Chesapeake Bay. The report is composed of two parts, part one, oyster recruitment (shell string) in Virginia and part two, dredge survey of selected oyster bars in Virginia.

Record Numbers Of Sea Turtle Strandings In Virginia In May And June 1998, W. C. Coles, J. A. Musick

Reports

No abstract provided.

Potomac River Pound-Net Survey, Summers 1996-1997 : 1998 Final Report, Herbert M. Austin, Kevin Hovel, William Connelly, Andrea Goodnight

Reports

The pound net (Fig 1) is a fixed fishing structure that intercepts fish as they migrate up- or down-river. Fish weirs made of stakes were first used by the Native Americans along the east coast of the English Colonies and were the model for the later development of the pound net. Pound nets were first used in New England around 1850; and were subsequently introduced to Long Island in 1855. A Captain Henry Fitzgerald is reported to have erected the first Chesapeake Bay pound net in 1858, but it failed due to its poor construction. No further attempts were made …

Veined Rapa Whelk, Rapana Venosa, Found In Virginia Waters, Roger L. Mann, Susan Waters

Reports

No abstract provided.

Model Haccp Program For Fresh And Frozen Soft Shell Blue Crabs Process Flow Chart/Hazard Analysis And Sanitation Standard Operating Procedures (Ssop), Robert A. Fisher, Mike Oesterling, Tom Rippen

Reports

No abstract provided.

Release Mortality In Virginia's Recreational Fishery For Summer Flounder, Paralichthys Dentatus, Jon A. Lucy, Tracy D. Holton

Reports

No abstract provided.

Estimation Of Juvenile Striped Bass Relative Abundance In The Virginia Portion Of Chesapeake Bay, January 1997-December 1997 : Annual Progress Report, Herbert M. Austin, A. Dean Estes, Donald M. Seaver

Reports

The Virginia Institute of Marine Science (VIMS) has conducted a juvenile striped bass seine survey from 1967 through 1973 and from 1980 through the present. The primary objective has been the monitoring of the relative annual recruitment success of juvenile striped bass in the spawning and to the nursery areas of Lower Chesapeake Bay. Initially (1967-1973), the survey was funded by the U.S. Fish and Wildlife Service and when reinstated in 1980 with funding from the National Marine Fisheries Service under the Emergency Striped Bass Study program. Commencing with the 1988 annual survey, support of the program has been jointly …