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Oyster Spatfall In Virginia Rivers: 1987 Annual Summary, James Whitcomb

Reports

The Virginia Institute of Marine Science (VIMS) conducts weekly surveys from June through early October to obtain oyster spatfall information. Spat counts are made on oyster shells strung on wire and suspended from stakes on public and private beds. The number of spat on shells is counted each week of the spawning season to determine the potential of a particular area for receiving a strike and to predict the most likely period the strikes will occur.

Contribution Of 1982 And Subsequent Year Class Females To The Virginia 1986 Commercial And Recreational Harvest, Herbert M. Austin

Reports

No abstract provided.

Limited Information On Utilization Of The Chesapeake Bay Bridge Tunnel Area By Recreational Fishermen, Jon A. Lucy

Reports

No abstract provided.

Consideration Of A 12" Tl Minimum Size Limit For Spotted Weakfish, Cynoscion Nebulosus In The Potomac River, Herbert M. Austin

Reports

No abstract provided.

The 1987 Update On Leased Grounds Near The Us 17 Bridge Over Chuckatuck Creek, Roger L. Mann, James P. Whitcomb

Reports

This report is an update of a study made in June to mid-august 1979. This study was made by the Virginia Institute of Marine Science of the College of William and Mary for the Department of Highways and Transportation, Suffolk, Virginia. The previous study provided: 1) a description of the shellfish resource prior to construction of a new bridge; 2) an estimate of the value of the oysters and shell on leased areas within the right-of-way; and 3) a basis for a later study after construction to evaluate possible environmental changes.

Since 1979 the Commonwealth has purchased the right-of-way and …

Status Of The Major Oyster Diseases In Virginia, Eugene M. Burreson

Reports

No abstract provided.

Progress Report No. 2: Industry, Nmfs, And Vims Joint-Sponsored Sea Scallop Research, William D. Dupaul, James E. Kirkley

Reports

No abstract provided.

Preliminary Analysis Of Virginia's Black Drum (Pogonias Cromis) Recreational And Commerical Fisheries, Joseph C. Desfosse

Reports

No abstract provided.

A Partial Analysis Of The Equity Of Meat Count And Shell Height Regulation In The Sea Scallop Fishery, James E. Kirkley, William D. Dupaul

Reports

No abstract provided.

Population Dynamics And Habitat Partitioning By Size, Sex, And Molt Stage Of Blue Crabs Callinectes Sapidus In A Subestuary Of Central Chesapeake Bay, Anson H. Hines, Romauld N. Lipcius, A. Mark Haddon

VIMS Articles

Abundances, size-frequency distributions, sexual composition and molt-stage composition of blue crabs Callinectes sapjdus were measured during 1983 to 1985 in the Rhode River, a subestuary of central Chesapeake Bay, USA. Crabs at the mouth and head of the river basin were sampled with monthly triplicate otter trawls. Crabs in the principal tidal creek of the river were sampled 3 d a week with a fish weir, which caught crabs moving upstream and downstream separately. Crabs exhibited consistent, marked seasonal cycles in abundance as well as considerable annual variation in July peak abundances. New recruits entered the subestuary in late fall …

Problems And Promises For Shellfishes In Chesapeake Bay, Herbert M. Austin

Reports

No abstract provided.

Sessions From The Past: Perspectives On The Chesapeake Bay Study The Living Resources, Herbert M. Austin

Reports

No abstract provided.

Comments On The Use Of Containers For Hard Clam (Mercenaria Mercenaria) Relaying, M. J. Oesterling, W. D. Dupaul

Reports

No abstract provided.

Position Of The Virginia Institute Of Marine Science On The Use Of The Patent Tongs In The Upper Rappahannock River, Herbert M. Austin

Reports

No abstract provided.

Study Of Alosa Stock Composition And Year-Class Strength In Virginia - Completion Report 1984-1986, Joseph G. Loesch, William H. Kriete Jr., Roxanne P. Trapani

Reports

This presentation is the completion report for P. L. 89-304, AFC 13-1-3 project "Study of Alosa stock composition and year-class strength in Virginia," for the period 1 January 1984 to 31 July 1986. The fishes of concern were the alewife (Alosa pseudoharengus), American shad (. sapidissima), and the blueback herring A. aestivalis).

A Comparison Of The Age And Growth Of The Tiger Shark, Galeocerdo-Cuvieri, From Off Virginia And From The Northwestern Gulf-Of-Mexico, Steve Branstetter, John A. Musick, James A. Colvocoresses

VIMS Articles

Lengths at age and growth rates for the tiger shark, Galeocerdo cuvieri. in the northwestern Atlantic and Gulf of Mexico were estimated from bands formed seasonally in the vertebral centra. The tiger shark grows rapidly compared with many other shark species. Growth rates for Gulf of Mexico juveniles were faster than for Atlantic juveniles. This produced significantly different (P < 0.01) estimates of the parameters of von Bertalanffy curves for the two regional samples. With sexes combined, parameter estimates for the Gulf of Mexico sample were L"" = 388 cm TL. K "" 0.184. to = -1.13 years; for the Atlantic sample they were L"" = 440 cm TL, K = 0.107, to = -2.35 years. Males mature at approximately 310 cm TL, females at 315-320 cm TL, but the regional differences in juvenile growth rates result in different ages at maturity. In the Gulf of Mexico. males mature in 7 years. females in 8 years; in the Atlantic. males and females both mature in approximately 10 years. The largest male and female examined (381 cm TL) were 15 and 16 years of age.

Bridging The Gap Between Economic-Theory And Fisheries Management - Can The Mfcma Produce Economically Rational Management - Discussion, James E. Kirkley

VIMS Articles

No abstract provided.

Effect Of Air-Supersaturated Sea Water On Argopecten Irradians Concentricus (Say) And Crassostrea Virginica (Gmelin), Robert Bisker, Michael Castagna

VIMS Articles

Argopecten irradians concentricus and Crassostrea virginica were exposed to several different levels of supersaturated seawater at temperatures ranging from 10 to 2!°C. Gas bubble trauma occurred at a total gas saturation level of 116%, causing mortality in juvenile A. i. concentricus and reduced growth in juvenile C. virginica.

Comparative Attachment, Growth And Mortalities Of Oyster (Crassostrea Virginica) Spat On Slate And Oyster Shell In The James River, Virginia, D. S. Haven, J. M. Zeigler, J. T. Dealteris, J. P. Whitcomb

VIMS Articles

Slate was investigated as a substitute for oyster shells which are used as a substrate for oyster spat (Crassostrea virginica) settlement in James River, Virginia oyster repletion programs. Oyster shells and slate fragments were planted on adjacent plots in two submerged locations about 825 m apart in July 1984. Quantitative .093 m2 (one ft2) samples were collected by a diver on seven occasions through July 1985, with additional samples collected from teh natural oyster bottoms adjacent to the two areas. Percent mortality, growth and numbers of live spat and spat scars (dead spat) per unit area of bottom were determined. …

Feeding Habitats Of Spot, Leiostomus-Xanthurus, In Polyhaline Versus Meso-Oligohaline Tidal Creeks And Shoals, Steven P. O'Neil, Michael P. Weinstein

VIMS Articles

No abstract provided.

Oyster Shoal Survey - Spring 1987, James Whitcomb

Reports

This report summarizes data collected during 1987 in the Virginia portion of the Chesapeake Bay. The report focuses on the spring oyster survey in Virginia.

Oyster Shoal Survey - Fall 1987, James Whitcomb

Reports

This report summarizes data collected during 1987 in the Virginia portion of the Chesapeake Bay. The report focuses on the fall oyster survey in Virginia.

Striped Bass Research, Virginia - Annual Report 1986-87, Virginia Institute Of Marine Science

Reports

The research reported herein is directly in response to priorities established in the "Action Plan" of the Emergency Striped Bass Study (the Chafee Amendment (PL 96-118) of the Anadromous Fish Conservation Act (PL 89-304)). The Amendment was the result of a decline in striped bass landings along the Atlantic Coast that began in the mid-1970's. The Virginia Institute of Marine Science (VIMS) ha~ previously conducted a juvenile striped bass seining program from 1967 through 1973 which was discontinued at that point due to a loss of funding. The program was reinstated in 1980 with funding from the National Marine Fisheries …

A Mark-Recapture Study Of Striped Bass In The James River, Virginia : Annual Report 1987, Joseph G. Loesch, William H. Kriete Jr., Bruce W. Hill

Reports

Internal anchor tags with external tubes were used to tag 1,986 striped bass in the James River in the Spring of 1987. The total number tagged was adjusted (at this time) to 823 because of observed and suspected tagging mortality. The available stock of striped bass in the Spring contained both young resident fish and mature nonresident fish which left the area of capture after spawning, presumably to migrate north in coastal waters. The exodus of the mature fish after spawning and the absence of a commercial fishery resulted in only 42 tag returns as of Spring 1988. This proportion …

Monogenetic Trematodes From The Southern Pacific Ocean Polyopisthocotyleids From The Australian Fishes, The Subfamily Polylabrinae And Microcotylinae, W. A. Dillon, William J. Hargis Jr., Antonio E. Harrises

Reports

This eighth of a series of monogenetic trematodes from the Southern Pacific Ocean discusses two species of Monogenea from Australian waters. Polylabroides mylionis n. sp., from the gills of Mylio butcheri, is described. Neobivagina agonostomi (Sandars, 1945} Dillon and Hargis, 1965, from the gills of Aldrichett~ forsteri, is redescribed; a new locality record is reported for Neobivagina agonostomi.

The Physiography And Extent Of Public Oyster Grounds In Pocomoke Sound, Virginia., James P. Whitcomb, Dexter S. Haven

VIMS Articles

Public oyster grounds in Pocomoke Sound, Virginia, were charted in 1978 using an electronic positioning system to locate areas ~f oysters, shell, sand or mud. Over five thousand stations were occupied and 1,267 samples of the substrate were taken with hydraulically operated patent tongs. The information was used to draw large scale charts showing shorelines, depths, bottom types and out lines of public grounds. Substrates, elevations, slopes, oyster densities and spatfall levels were analyzed.

Predation On Single Spat Oysters Crassostrea Virginica (Gmelin) By Blue Crabs Callinectes Sapidus Rathbun And Mud Crabs Panopeus Herbstii Milne-Edwards, Robert Bisker, Michael Castagna

VIMS Articles

Single spat oysters Crassostrea virginica of four size classes (3.4-24.6 mm mean shell heights [SH]) were offered to six size classes of blue crabs Ca/linectes sapidus (9.3-85.5 mm mean carapace width [CW]) and five size classes of mud crabs Panopeus herbstii (7.1-34.4 mm mean CW) for 48 hr. Predation rate, recorded as the number of dead oyster spat/crab/day, was directly proportional to crab size and inversely proportional to oyster size. Mud crabs of 34.4 mm CW and blue crabs of 85 .5 mm CW had predation rates of 22.5 and 16.7 spat/crab/day on oyster spat of 24.6 and 24.4 mm …

Oyster Spatfall In Virginia Rivers: 1986 Annual Summary, James Whitcomb

Reports

The Virginia Institute of Marine Science (VIMS) conducts weekly surveys from June through early October to obtain oyster spatfall information. Spat counts are made on oyster shells strung on wire and suspended from stakes on public and private beds. The number of spat on shells is counted each week of the spawning season to determine the potential of a particular area for receiving a strike and to predict the most likely period the strikes will occur.

The Assessment Of Commercial Fishing Effort In Virginia 1987, Joice S. Davis, James C. Owens, William H. Kriete Jr., Joseph G. Loesch

Reports

This report summarizes the assessment of commercial fishing effort in Chesapeake Bay and its Virginia tributaries during the period January 1, 1987 through December 31, 1987. Objectives of this study were: 1) to assess pound net fishing effort in Chesapeake Bay, and in the James, York and Rappahannock rivers; and 2) to assess anchor, drift, and stake gill net fishing effort in the James, York and Rappahannock rivers.

The study period covered the calendar year which represents a natural break in fishing effort in Virginia. Data for fyke net and haul seine fisheries, when available, have also been included.