Animal Sciences Commons^™

The Assessment Of Commercial Fishing Effort In Virginia Annual Report 1990, Joice S. Davis, James C. Owens, Joseph G. Loesch

Reports

The Virginia Institute of Marine Science (VIMS), through funding by the Virginia Marine Resources Commission (VMRC), has conducted an assessment of commercial fishing effort in Virginia's major rivers and Chesapeake Bay beginning in late 1985 to the present, except for brief intervals when funding was unavailable.

This report primarily summarizes the final year of assessment, from 1 October 1989 through 30 September 1990. Objectives of the study were: -1) to assess pound net fishing effort in Chesapeake Bay, in the James, York, Rappahannock, and Potomac rivers, and the Virginia tributaries to the Potomac River; and, 2) to assess stake, anchor …

Initial Information On The Atlantic Croaker : A Final Report On "Development Of Age Determination Methods, Life History - Population Dynamics Information, And Evaluation Of Growth Overfishing Potential For Important Recreational Fishes, Mark E. Chitteneden, Luiz R. Barbieri, Cynthia Jones, Et Al

Reports

Observational data on abundance of Atlantic croaker, Micropogonias undulatus, and boxes of specimens from which to obtain biological data for life history/population dynamics wor~ were collected at weekly or fortnightly intervals from Chesapeake Bay commercial :fisheries, primarily pound nets, in 1988 and 1989. A special collection of 24 boxes of one commercial grade was purchased from one fishery in 1989 to evaluate box-to-box variation in total lengths and sex ratios, and how it affects interpretation of routinely collected data. Length composition data from 25 years of York River trawling were used to compare length frequencies in trawl and pound net …

Striped Bass Research, Virginia : Estimation Of Juvenile Striped Bass Relative Abundance, Annual Report 1989, James A. Colvocoresses

Reports

The Virginia Institute of Marine Science (VIMS) has conducted a juvenile striped bass seine survey during the years from 1967 through 1973 and from 1980 through the present, with the primary objective of monitoring the relative annual recruitment success of juvenile striped bass in the spawning and nursery areas of Lower Chesapeake Bay. The survey was funded during 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 reported herein, support of the program …

A Survey For Oysters And Shell In The Vicinity Of The Proposed Construction Site For A City Of Norfolk Water Line Across The Lafayette River Near The Hampton Boulevard Bridge, Roger Mann, Reinaldo Morales-Alamo

Reports

At the request of the Department of Utilities of the City of Norfolk, the Virginia Institute of Marine Science conducted a survey of the oyster ground in the Lafayette River in the immediate vicinity of the proposed construction site for a 20 11 water line across the river just below the Hampton Blvd. bridge and in front of the Norfolk Yacht and Country Club (Figure 1).

The section of river bottom surveyed was delineated by the Department of Utilities engineers on their site plans. It consisted of a strip across an oyster ground leased by Holland Fisheries. Inc. (Virginia Marine …

Stock Identification Of Summer Flounder (Paralichthis Dentatus) In The Southern Mid-Atlantic Bight, John A. Musick, Joseph C. Desfosse, A. Deane Estes, Paul Lyons

Reports

A total of 12, 339 summer flounder were tagged from Virginia waters during 1987-89. A total of 874 were recaptured for an overall return rate of 7 . 1%. Most of the returns ( 48.5%) were from Virginia waters, or areas to the south. A smaller number ( 21.6%) were from areas north and offshore of Virginia. Another 29. 9% were recaptured and returned with inadequate location data. Examining only the returns with adequate location data, yielded a separation of 69.2% and 30.8% between the groups. No differences were noted in the sizes at tagging between these groups. Tagged flounder …

Mitochondrial Dna Restriction Fragment Length Polymorphism Analysis Of Weakfish (Cynoscion Regalis) Stock Structure Along The Mid-Atlantic Coast, Jan Mcdowell, Ana Beardsley, John Graves

Reports

To determine the genetic basis of intraspecifc population structure within the weakfish, cynoscion regalis, a total of 376 individuals was collected from four geographic sites along the midAtlantic coast of the United states for two success! ve years. Restriction fragment length polymorphism analysis of weakfish mitochondrial DNA with six restriction endonucleases demonstrated a low level of intraspecific mtDNA variation. The common restriction genotype occurred at a frequency of 0.88 to 0.95 in all samples, and there was no significant heterogeneity found in the frequency of occurrence of the combined rare variants among the samples. Furthermore, the temporal and spatial distribution …

Striped Bass Research, Virginia: Characterization Of Virginia's Striped Bass Commercial Fisheries Annual Report 1989-90, Virginia Institute Of Marine Science

Reports

The research reported herein (and in the 1982 through 1989 annual reports) is directly related to Priority III stated in the "Action Plan" (p. 15) of the Emergency Striped Bass Study (Anadromous Fish Conservation Act Amendment, Public Law 96-118). The amendment was the result of a decline in striped bass (Marone saxatilis) landings from Maine to North Carolina since the mid-1970's. This report summarizes the results of the fall 1989 and spring 1990 sampling period and compares these results with the previous work.

A Mark-Recapture Study Of Striped Bass In The Rappahannock River, Virginia Annual Report 1989-1990, Joseph G. Loesch, Bruce W. Hill, Philip W. Sadler

Reports

A total of 6,203 striped bass were tagged in fall 1989 and 2,033 in spring 1990 on the Rappahannock River.

In fall 1989, 63.5% of the tagged striped bass were less than 400 mm fork length (FL). In comparison, 86% of the fish were greater than 400 mm FL in spring 1990.

Pound nets in the Rappahannock River account for 75% of the recaptures, while out of state recaptures account for only 0. 008% of the total returns.

Chesapeake Bay Status Of Stocks Report 1988-89 : Virginia Juvenile Finfish Trawl Data, Herbert M. Austin, Christopher F. Bonzek

Reports

The results presented here are the tabular Catch-per-Unit-gffort (CPUE) Virginia trawl data for young of the year and yearling finfish from the inception date of the survey (1954) to the present.

These data will also be the basis for developing a Virginia juvenile finfish index in 1989-1990.