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Articles 61 - 90 of 90
Full-Text Articles in Life Sciences
Importation Of Shellfish From Outside The Coastal Waters Of Virginia, William D. Dupaul
Importation Of Shellfish From Outside The Coastal Waters Of Virginia, William D. Dupaul
Reports
No abstract provided.
Monitoring Juvenile Fishes In The Surf-Zone Of Virginia, And Development Of A Juvenile Bluefish Young-Of-The-Year Index In Virginia : 1994 Sampling Season, Donald M. Seaver, Herbert M. Austin
Monitoring Juvenile Fishes In The Surf-Zone Of Virginia, And Development Of A Juvenile Bluefish Young-Of-The-Year Index In Virginia : 1994 Sampling Season, Donald M. Seaver, Herbert M. Austin
Reports
The Virginia Institute of Marine Science has conducted a monitoring program of the juvenile finfish in the Chesapeake Bay tributary rivers of Virginia since 1955, the striped bass spawning rivers since 1967 and the main stem Chesapeake Bay since 1988. These data are used to develop juvenile indices for several recreationally important species including spot, croaker, summer flounder, weakfish, black seabass and striped bass. The indices are important as both an index of recruitment success and effectiveness of management actions and are used in interstate Fishery Management Plans (FMP's) by the Atlantic States Marine Fisheries Commission (ASMFC) and the Chesapeake …
Standardizing Fishing Effort & Individual Transerable Effort Programs In The Sea Scallop, Placopecten Magellanicus Fishery, James Kirkley, William D. Dupaul
Standardizing Fishing Effort & Individual Transerable Effort Programs In The Sea Scallop, Placopecten Magellanicus Fishery, James Kirkley, William D. Dupaul
Reports
No abstract provided.
Filtration By Oysters : Interactive Effects Of Water Flow, Seston Composition And Filtration Rate, Mark W. Luckenbach, Deborah A. Harsh, Roger L. Mann, R J. Orth, Ken Moore
Filtration By Oysters : Interactive Effects Of Water Flow, Seston Composition And Filtration Rate, Mark W. Luckenbach, Deborah A. Harsh, Roger L. Mann, R J. Orth, Ken Moore
Reports
Filtration by suspension-feeding bivalves affects water quality and the postulated impacts include increased light penetration and enhanced benthic primary production. Such system-level predictions are extrapolated fiom still water experiments which neglect the effects of flow, seston composition, turbulent mixing and refiltration by oysters within groups. Flume experiments were used to investigate the effects of varying flow speed and seston composition on filtration capacity of oysters. Six groups of 90 oysters were used in treatments which varied concentrations of the algae Ekalassiosira weisj70grgrsie parately and in combination with inorganics; four sets of shell only controls were used to evaluate hydrodynamic effects. …
Spawning And Ecology Of Early Life Stages Of Black Drum, Pogonias Cormis, In Lower Chesapeake Bay, Louis Broaddus Daniel Iii
Spawning And Ecology Of Early Life Stages Of Black Drum, Pogonias Cormis, In Lower Chesapeake Bay, Louis Broaddus Daniel Iii
Dissertations, Theses, and Masters Projects
During spring 1990 and 1991, ichthyoplankton surveys were conducted in lower Chesapeake Bay to estimate seasonal egg production, population biomass and the impact of predation by gelatinous zooplankton on early life stages of black drum, Pogonias cromis. Rearing experiments indicated that at least three species of sciaenid (silver perch, Bairdiella chrysoura; weakfish, Cynoscion regalis and P. cromis) were spawning in the survey area during both years. Specific identification of eggs based on previously published ranges of outside egg diameter (OED) were not reliable due to considerable overlap in diameter distributions. Analysis of weekly OED frequency revealed the presence of three …
Nutrition And Feeding In Striped Bass Morone Saxatilis Larvae: Lipid And Fatty Acid Requirements And Microencapsulated Diets, Sureyya Ozkizilcik
Nutrition And Feeding In Striped Bass Morone Saxatilis Larvae: Lipid And Fatty Acid Requirements And Microencapsulated Diets, Sureyya Ozkizilcik
Dissertations, Theses, and Masters Projects
There has been a growing interest in the commercial aquaculture of striped bass, Morone saxatilis. Little is known, however, about the nutritional requirements and feeding physiology of striped bass larvae. The objectives of this study were (a) to evaluate the efficiency of the live food enrichment techniques in studying the nutritional requirements for polyunsaturated fatty acids (PUFA), phospholipids and free amino acids, (b) to determine the ontogenetic changes of lipolytic enzymes, and (c) to develop a microencapsulated diet for striped bass larvae as full or partial replacement of live food. Three enrichment techniques, namely, microencapsulated fish oil, yeast/fish oil emulsion …
The Early Life Histories Of Three Families Of Cephalopods (Order Teuthoidea) And An Examination Of The Concept Of A Paralarva, Elizabeth Keane Shea
The Early Life Histories Of Three Families Of Cephalopods (Order Teuthoidea) And An Examination Of The Concept Of A Paralarva, Elizabeth Keane Shea
Dissertations, Theses, and Masters Projects
No abstract provided.
Filtration Of Oysters In Patches: Effects Of Water Flow And Seston Composition, Deborah Armitage Harsh
Filtration Of Oysters In Patches: Effects Of Water Flow And Seston Composition, Deborah Armitage Harsh
Dissertations, Theses, and Masters Projects
No abstract provided.
Effects Of Substrate On Hatching Success In Black Skimmers, Rynchops Niger, At The Hampton Roads Bridge-Tunnel, Hampton, Virginia, Crystal Dawn Matthews
Effects Of Substrate On Hatching Success In Black Skimmers, Rynchops Niger, At The Hampton Roads Bridge-Tunnel, Hampton, Virginia, Crystal Dawn Matthews
Dissertations, Theses, and Masters Projects
No abstract provided.
The Vascular Flora Of The Carrotoman River Watershed, Lancaster County, Virginia, Troy W. Weldy
The Vascular Flora Of The Carrotoman River Watershed, Lancaster County, Virginia, Troy W. Weldy
Dissertations, Theses, and Masters Projects
No abstract provided.
Adrenal Zona Reticularis Changes Associated With Pubertal Transition In Control Versus Population-Inhibited Prairie Deermice, Bradley Alan Cherry
Adrenal Zona Reticularis Changes Associated With Pubertal Transition In Control Versus Population-Inhibited Prairie Deermice, Bradley Alan Cherry
Dissertations, Theses, and Masters Projects
No abstract provided.
Determination Of The Natal Origin And Genetic Stock Composition Of A Juvenile Feeding Population Of The Loggerhead Turtle (Caretta Caretta) In Chesapeake Bay, Jeffrey Worner Norrgard
Determination Of The Natal Origin And Genetic Stock Composition Of A Juvenile Feeding Population Of The Loggerhead Turtle (Caretta Caretta) In Chesapeake Bay, Jeffrey Worner Norrgard
Dissertations, Theses, and Masters Projects
No abstract provided.
Phylogenetic Implications Of Sporogenesis Ultrastructure In The Genus Bossiella (Corallinales, Rhodophyta), Kimberly Joy Karnas
Phylogenetic Implications Of Sporogenesis Ultrastructure In The Genus Bossiella (Corallinales, Rhodophyta), Kimberly Joy Karnas
Dissertations, Theses, and Masters Projects
No abstract provided.
Serum Corticosterone Concentrations Related To Seasonal Variation In Reproductive Development In Natural Populations Of Peromyscus Leucopus Noveboracensis, Serena Khosla
Dissertations, Theses, and Masters Projects
No abstract provided.
An Ultra Structural Study Of Sporogenesis, Vegatative Morphology, And Host-Parasite Interactions In Choreonema Thuretii (Corallinales, Rhodophyta), Elizabeth Anne Lapointe
An Ultra Structural Study Of Sporogenesis, Vegatative Morphology, And Host-Parasite Interactions In Choreonema Thuretii (Corallinales, Rhodophyta), Elizabeth Anne Lapointe
Dissertations, Theses, and Masters Projects
No abstract provided.
Reproductive And Feeding Biology Of Selected Syngnathids (Pisces: Teleostei) Of The Western Atlantic, Rogerio Luiz Teixeira
Reproductive And Feeding Biology Of Selected Syngnathids (Pisces: Teleostei) Of The Western Atlantic, Rogerio Luiz Teixeira
Dissertations, Theses, and Masters Projects
The reproductive and feeding biology of five syngnathid species of the western Atlantic were studied: the pipefishes Syngnathus fuscus, S. floridae, the lined seahorse Hippocampus erectus of Chesapeake Bay; and the pipefishes S. folletti and Oostethus lineatus, from southern and southeast Brazil, respectively. Male syngnathids incubate eggs received from females in a ventral brood pouch, females do not play any additional role in parental care after mating. This natural sex role reversal is a unique characteristic that all male syngnathids have. In other fishes, parental care is usually a female prerogative. Most pipefishes are polygamous, while seahorses are monogamous. Syngnathus …
A Study Of The Histozoic Oyster Parasite, Perkinsus Marinus: I. Disease Processes In American Oysters (Crassostrea Virginica). Ii. Biochemistry Of Perkinsus Marinus, Aswani K. Volety
Dissertations, Theses, and Masters Projects
Numerous studies have investigated the disease processes of Perkinsus marinus in the oyster, Crassostrea virginica. However, the transmission dynamics and factors affecting P. marinus infection are still unclear. The objectives of this study were to investigate: (1) the principal and most effective lifestage of P. marinus, (2) the synergistic effects of temperature, salinity and P. marinus dose on disease prevalence, (3) suppression of host reactive oxygen intermediates by P. marinus, (4) the localization of acid phosphatase in the parasite, (5) the effects of temperature and salinity on acid phosphatase secretion, and (6) the P. marinus lipid and fatty acid composition. …
Movements And Ecology Of Summer Flounder, Paralichthys Dentatus, Tagged In The Southern Mid-Atlantic Bight, Joseph C. Desfosse
Movements And Ecology Of Summer Flounder, Paralichthys Dentatus, Tagged In The Southern Mid-Atlantic Bight, Joseph C. Desfosse
Dissertations, Theses, and Masters Projects
A total of 12,323 summer flounder were tagged and released in Chesapeake Bay, the coastal waters off Virginia Beach, and the Eastern Shore during 1987-89. Excluding immediate recaptures, a total of 675 were recaptured for an overall return rate of 5.5%. Returns from the commercial fishery (56.2%) outnumbered those from the recreational fishery (35.7%). The majority of returns (47.1%) came from either Virginia waters or areas to the south, while only 12.8% were from areas to the north of Virginia. offshore returns accounted for 8.5% of the total. Returns with insufficient location data made up the remaining 31.5%. of the …
Elevated Temperatures Perturb Lipopolysaccharide Leading To Increased Serum Complement Sensitivity In Most Gram-Negative Bacteria, Lori Snyder Dudgeon
Elevated Temperatures Perturb Lipopolysaccharide Leading To Increased Serum Complement Sensitivity In Most Gram-Negative Bacteria, Lori Snyder Dudgeon
Dissertations, Theses, and Masters Projects
No abstract provided.
Immigration Variability And Post-Settlement Processes Of The Spiny Lobster, Panulirus Argus, In The Exuma Cays, Bahamas, Luis Coba-Cetina
Immigration Variability And Post-Settlement Processes Of The Spiny Lobster, Panulirus Argus, In The Exuma Cays, Bahamas, Luis Coba-Cetina
Dissertations, Theses, and Masters Projects
No abstract provided.
Effects Of Sunlight And Seasonal Temperature On Persistence Of Four Bacteriophages In An Estuarine Environment, Terri A. Muller
Effects Of Sunlight And Seasonal Temperature On Persistence Of Four Bacteriophages In An Estuarine Environment, Terri A. Muller
Dissertations, Theses, and Masters Projects
No abstract provided.
Evidence For A Relation Between A White Perch Young-Of-The-Year Index And Indices Of Later Life Stages, Thomas C. Mosca Iii, Herbert M. Austin, David M. Plotner
Evidence For A Relation Between A White Perch Young-Of-The-Year Index And Indices Of Later Life Stages, Thomas C. Mosca Iii, Herbert M. Austin, David M. Plotner
VIMS Books and Book Chapters
Juvenile indices are employed in fisheries management to predict the future abundance of harvestable adults. Frequently, regulations on the utilization of the resource, and a lack of fishery independent abundance data, make verification of the prediction accuracy impossible. In the case of white perch in Virginia, this is not so. Using the weighting system developed for a Chesapeake Bay-wide index of juvenile striped bass abundance based on summertime beach seine data collected in nursery ground waters, we developed a similar index for white perch in the Virginia portion of the Bay. Regressions against Virginia Institute of Marine Science otter trawl …
Effects Of A Polyhaline Sav Bed On Spatial And Temporal Variability In Water Quality, Kenneth A. Moore, Jill L. Goodman
Effects Of A Polyhaline Sav Bed On Spatial And Temporal Variability In Water Quality, Kenneth A. Moore, Jill L. Goodman
VIMS Books and Book Chapters
Beds of submerged aquatic vegetation (SAY) may moderate or enhance the standing stocks of dissolved oxygen, nutrients, suspended particulates, and chlorophyll in water masses that are exchanged with adjacent channel areas of the Bay or its tributaries. This study investigated the short-term variability in commonly measured water column parameters at four stations located along a 1 km transect across a polyhaline SAV bed in the lower Bay. Data were collected for 10-day periods during June, August, and October 1993 at 15 min to 3 hr intervals using automated water samplers, arrays of spherical PAR quantum sensors, and Hydrolab datasondes. A …
The Precarious State Of The Chesapeake Public Oyster Resource, William J. Hargis Jr., Dexter S. Haven
The Precarious State Of The Chesapeake Public Oyster Resource, William J. Hargis Jr., Dexter S. Haven
VIMS Books and Book Chapters
The 243,000 acres of Virginia's public oyster reefs (a.k.a. the Baylor Grounds) have been extremely productive of usable and saleable (market .md seed) oysters (Crassostrea virginica), oyster shells and oyster shell by-products. Archaeological remains and historical records show that they have yielded great numbers of whole oysters, oyster meats, oyster "seed" and shell since the 01esapeake was formed some 3,000 years BP. In the last century their natural productivity, as indicated by commercial harvest records (the only long-term data available), has declined markedly. In 1904, Vrrginia's total market (adult) oyster harvest was about 7.6 million bushels (mostly from public grounds). …
Estimation Of Juvenile Striped Bass Relative Abundance In The Virginia Portion Of Chesapeake Bay, January 1994-December 1994 : Annual Progress Report, Herbert M. Austin, A. Dean Estes, Donald M. Seaver
Estimation Of Juvenile Striped Bass Relative Abundance In The Virginia Portion Of Chesapeake Bay, January 1994-December 1994 : 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 nursery areas of Lower Chesapeake Bay. The survey was funded in it's initial period by the U.S. Fish and Wildlife Service and then 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 made …
Manual For Handling And Shedding Blue Crabs (Callinectes Sapidus), Michael J. Oesterling
Manual For Handling And Shedding Blue Crabs (Callinectes Sapidus), Michael J. Oesterling
Reports
This manual is intended to present a practical approach to constructing and operating a Chesapeake Bay crab shedding facility. Included are portions of an earlier VIMS publication by Paul A. Haefner, Jr. and David Garten (1974), "Methods of handling and shedding blue crabs, (Callinectes sapidus)," as well as a compilation of other scientific and industry experiences. Techniques described may not apply to all situations; in many cases general recommendations are made. Additionally, descriptions of various facility designs refer mainly to those in use in Chesapeake Bay; other areas of the country may use varying, but similar designs. Although the information …
The Status Of Virginia's Public Oyster Fishery 1994, Reinaldo Alonzo-Morales, Roger Mann
The Status Of Virginia's Public Oyster Fishery 1994, Reinaldo Alonzo-Morales, Roger Mann
Reports
This report summarizes data collected during 1994 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.
Genetic Relationships Among Geographically Isolated Populations Of Bluefish (Pomatamus Saltatrix), Catherine N. O'Neill
Genetic Relationships Among Geographically Isolated Populations Of Bluefish (Pomatamus Saltatrix), Catherine N. O'Neill
Dissertations, Theses, and Masters Projects
No abstract provided.
Finfish Communities Of Two Intertidal Marshes Of The Goodwin Islands, York River, Virginia, Lisa Ann Ayers
Finfish Communities Of Two Intertidal Marshes Of The Goodwin Islands, York River, Virginia, Lisa Ann Ayers
Dissertations, Theses, and Masters Projects
The finfish communities using the intertidal surfaces of a bay-exposed marsh and a sheltered, channel marsh of the Goodwin Islands, York River, Virginia were studied from May to November 1994. Samples were taken approximately twice monthly using a flume weir at three stations in each marsh. Species composition, abundance and biomass were estimated, and growth patterns and production rates were described for the dominant species. A total of 3001 fish were collected from 11 species and 8 families. Fundulus heteroclitus dominated both marshes and accounted for 83.07% of the total number of fish caught, and 84.83% of the total biomass …
Tidepool Value As Foraging Patches For Breeding And Migrating Birds In Tidal Salt Marshes In The Lower Chesapeake Bay, Amanda Susan Allen
Tidepool Value As Foraging Patches For Breeding And Migrating Birds In Tidal Salt Marshes In The Lower Chesapeake Bay, Amanda Susan Allen
Dissertations, Theses, and Masters Projects
No abstract provided.