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Aquaculture and Fisheries Commons

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1980

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Articles 1 - 30 of 56

Full-Text Articles in Aquaculture and Fisheries

Summary Of Arguments In Favor Of And Against Use Of A Hydraulic Escalator Dredge For Harvest Of Hard Clams In Virginia With A Short Statement On Operation Of The Machine, Virginia Institute Of Marine Science Dec 1980

Summary Of Arguments In Favor Of And Against Use Of A Hydraulic Escalator Dredge For Harvest Of Hard Clams In Virginia With A Short Statement On Operation Of The Machine, Virginia Institute Of Marine Science

Reports

No abstract provided.


Chesapeake Bay Finfishes And Fisheries, Herbert M. Austin Nov 1980

Chesapeake Bay Finfishes And Fisheries, Herbert M. Austin

Reports

No abstract provided.


Impacts Of E.P.A.'S Proposed Effluent Guidelines On The Blue Crab Processing Industry, Thomas J. Murray Nov 1980

Impacts Of E.P.A.'S Proposed Effluent Guidelines On The Blue Crab Processing Industry, Thomas J. Murray

Reports

No abstract provided.


Marine Resource Bulletin Vol. 12, No. 3, Virginia Sea Grant, Virginia Institute Of Marine Science Oct 1980

Marine Resource Bulletin Vol. 12, No. 3, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

In this Issue

Virginia's Oyster Industry

Tides and Tidal Predictions

Facts About Hypothermia

PCA's Aquatic Loan Program

Virginia BAC Asks Boaters' Advice


Position Of The Virginia Intstitute Of Marine Science On The Use Of Hydraulic Dredding For The Taking Of Hard Clams, Herbert M. Austin Sep 1980

Position Of The Virginia Intstitute Of Marine Science On The Use Of Hydraulic Dredding For The Taking Of Hard Clams, Herbert M. Austin

Reports

No abstract provided.


Studies Of The Ichthyofauna Of Connecticut, Paul M. Jacobson Sep 1980

Studies Of The Ichthyofauna Of Connecticut, Paul M. Jacobson

Storrs Agricultural Experiment Station

No abstract provided.


Effect Of Fish Size On Prey Size Selection In Gambusia Affinis, Wayne A. Wurtsbaugh, Joseph J. Cech Jr., James Compton Sep 1980

Effect Of Fish Size On Prey Size Selection In Gambusia Affinis, Wayne A. Wurtsbaugh, Joseph J. Cech Jr., James Compton

Watershed Sciences Faculty Publications

Food size selection of the mosquitofish , Gambusia affinis affinis. was measured in aquaria using juvenile stages of the mosquito, Clllex tarsalb;, as prey. Fish size varied from recently born fry to large adult females. Food size selection was positively correlated with fish size. Mosquitofish fry (6-8 111m standard length) attacked and ate primarily first and second instar larvae. Fry attacked larger instars, but attack success on these was low (0 - 50%). Fish larger than 20 mm attached primarily pupae and third and fourth instar larva. No first instar mosquitoes were eaten. Attack success for these fish was above 65'Yr ...


Mass Marking Of Mosquitofish: Preliminary Results, Bruce Vondracek, Wayne A. Wurtsbaugh, Joseph J. Cech Jr. Sep 1980

Mass Marking Of Mosquitofish: Preliminary Results, Bruce Vondracek, Wayne A. Wurtsbaugh, Joseph J. Cech Jr.

Watershed Sciences Faculty Publications

Three marking techniques were tested to determine their applicability for mosquitofish. Tetracycline drugs and DC Ar administered in the diet successfully marked laboratory-cultured mosquitofish, but exposure to direct sunlight in outdoor tanks resulted in the rapid disappearance of the marks. Preliminary data on fluorescent marks from a polystyrene pigment in a melamine-sulfonamide-formaldehyde resin forced into the dermal ,tissue with compressed air are more promising.

A t an optimal deliver pressure of 7.3 m Hg (140 p.s.i.) and spraying time of 15 sec., marking percentage is maximized and fish mortality is minimized. Mark retention time was up to ...


Marine Resource Bulletin Vol. 12, No. 2, Virginia Sea Grant, Virginia Institute Of Marine Science Jul 1980

Marine Resource Bulletin Vol. 12, No. 2, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

In this Issue

The Potential for a Shark Fishery in Virginia

Fourier Analysis of Quartz Grains

Transplanting Eelgrass

Striped Bass Study

Marsh Exploration by Canoe


Status Of Hickory Shad Stocks In Virginia, W. H. Kriete Jr. Jul 1980

Status Of Hickory Shad Stocks In Virginia, W. H. Kriete Jr.

Reports

No abstract provided.


A Critique Of The Introduction Of Crassostrea Gigas To Europe, J. D. Andrews Jul 1980

A Critique Of The Introduction Of Crassostrea Gigas To Europe, J. D. Andrews

Reports

No abstract provided.


Data On The Commerical Sport Fishery For Summer Flounder, Paralichthys Dentatus, In Virginia; Based On Information Collected In A Survey Of Approx. 65% Of The Boat Captains Operaing In 1978, Anne Marshall Jun 1980

Data On The Commerical Sport Fishery For Summer Flounder, Paralichthys Dentatus, In Virginia; Based On Information Collected In A Survey Of Approx. 65% Of The Boat Captains Operaing In 1978, Anne Marshall

Reports

No abstract provided.


Status Of Sturgeons In Virginia, J. A. Musick Jun 1980

Status Of Sturgeons In Virginia, J. A. Musick

Reports

No abstract provided.


Preliminary Management Plan For The Striped Bass Of The Atlantic Coast From Maine Through North Carolina, Herbert M. Austin Jun 1980

Preliminary Management Plan For The Striped Bass Of The Atlantic Coast From Maine Through North Carolina, Herbert M. Austin

Reports

No abstract provided.


A Comparison Of Vitamin A1 & A2 Levels & The Role Of Beta-Carotene & Lutein In The Synthesis Of Vitamin A In Freshwater Fishes, Benjamin Del Tito Jr. May 1980

A Comparison Of Vitamin A1 & A2 Levels & The Role Of Beta-Carotene & Lutein In The Synthesis Of Vitamin A In Freshwater Fishes, Benjamin Del Tito Jr.

Masters Theses & Specialist Projects

The objectives of this study were to determine naturally occurring concentrations of vitamin A1 and A2 in selected native fishes and, under laboratory conditions, to determine the possible role of beta-carotene and lutein in the synthesis of vitamin A by goldfish. The native fishes were selected to exhibit different feeding habits and were taken from different habitats (stream vs. lake) during different seasons of the year. In the laboratory, two possible precursors, beta-carotene and lutein, were incorporated into the diet to determine the role of these substances in the synthesis of vitamin A.

Species of fish differed in ...


Evaluation Of Six Strains Of Rainbow Trout (Salmo Gairdneri) Stocked As Fingerlings In Porcupine Reservoir, Utah, Mark Hudy May 1980

Evaluation Of Six Strains Of Rainbow Trout (Salmo Gairdneri) Stocked As Fingerlings In Porcupine Reservoir, Utah, Mark Hudy

All Graduate Theses and Dissertations

Different strains of rainbow trout (Salmo gairdneri), Ten Sleep, Sand Creek, Beitey, Shepherd-of-the-Hills, New Zealand, Fish Lake- Desmet, Desmet, were compared for survival to the creel, growth and catchability after being stocked in a fluctuating 80 ha Utah reservoir . Fish were stocked in the spring and fall as fingerlings and monitored by creel censusing, gill netting and electrofishing. Fish were tagged with coded wire snout tags prior to stocking . An angler opinion survey was conducted to determine angler satisfaction with numbers and size of fish caught.

Regardless of strain, spring stocking was superior to fall stocking in survival to the ...


Production Of Mountain Whitefish (Prosopium Williamsoni) In Altered And Unaltered Reaches Of Two Intermountain Streams In Their Alluvial Flood Plains, Michael J. Ottenbacher May 1980

Production Of Mountain Whitefish (Prosopium Williamsoni) In Altered And Unaltered Reaches Of Two Intermountain Streams In Their Alluvial Flood Plains, Michael J. Ottenbacher

All Graduate Theses and Dissertations

Estimates of production and related parameters (growth rate, density, standing crop) were made for populations of mountain whitefish in altered and "unaltered" areas of the Glacksmith Fork and Logan River, UtJh from spring 1975 through summer 1976. Capture records of marked whitefish were also analyzed to describe fish movement and check on assumptions implicit in the population estimator.

Mean weights and instantaneous growth rates of whitefish were similar at all sites for comparable size/age groups. Among sites, differences in production per sampling interval and annual production were due mainly to differences in standing crop and/or age structure.

Estimates ...


Virginia Msd Problems And Options, Jon Lucy May 1980

Virginia Msd Problems And Options, Jon Lucy

Reports

No abstract provided.


High Value Fishery: Vessel-Harvest Helicopter Landing, Roger F. Scott Apr 1980

High Value Fishery: Vessel-Harvest Helicopter Landing, Roger F. Scott

Theses and Major Papers

The purpose of this paper is to examine the feasibility of using helicopters to move high value fish from the offshore fishing fleet at sea, to market distribution locations. To accomplish this purpose, data was collected on the high value swordfish species, ex-vessel, $1.50 per pound, and used to compare three basic options. Two Sikorsky helicopters were considered in the options tested; the light lift S58T, and the medium lift S61. The data shows the S58T to dominate the S61 in all comparisons. An underlying assumption of the analysis is that the fish landed by helicopter will demand a ...


An Investigation Into A New England Fisheries Development Project: Towards The Expansion Of The Whiting Fishery, J. H. Kaelin Apr 1980

An Investigation Into A New England Fisheries Development Project: Towards The Expansion Of The Whiting Fishery, J. H. Kaelin

Theses and Major Papers

In 1973, the New England Fishery Development Program (NEFDP), an industry/government partnership was formed to offset a portion of the economic decline of the New England fishing industry while encouraging the development of underutilized species and nontraditional fishery products. The purpose of this paper is to examine one of the NEFDP's development projects and to comment on its apparent success. This paper attempts to determine if domestic processors can be expected to produce whiting fillet blocks that can compete in the market place with foreign imports. Several aspects of the problem are favorably resolved-an abundant whiting resource is ...


Status Of American Shad Stocks In Virginia, William H. Kriete Jr. Apr 1980

Status Of American Shad Stocks In Virginia, William H. Kriete Jr.

Reports

No abstract provided.


Preliminary Heights At Annulus Of Scallops From Jeffrey's Ledge, Gulf Of Maine, Lowell W. Fritz Mar 1980

Preliminary Heights At Annulus Of Scallops From Jeffrey's Ledge, Gulf Of Maine, Lowell W. Fritz

Reports

No abstract provided.


Evaluations Of Menhaden Net Mesh Regulations Options, John A. Musick Mar 1980

Evaluations Of Menhaden Net Mesh Regulations Options, John A. Musick

Reports

No abstract provided.


Evaluation Of Impacts Associated With Reregulation Of Water Levels In Lake Mohave, Larry J. Paulson, John R. Baker, U.S. Water And Power Resources Service Mar 1980

Evaluation Of Impacts Associated With Reregulation Of Water Levels In Lake Mohave, Larry J. Paulson, John R. Baker, U.S. Water And Power Resources Service

Publications (WR)

The U.S. Water and Power Resources Service is considering reregulating Lake Mohave water levels to increase the net power benefit from Hoover Dam. Reregulation will not increase the generation capacity of the Hoover powerplant but it will enable the plant operation to be increased when the energy has greater monetary value. Energy generated at different times of the year has different market value, the highest being in January-March and July- September. By generating more power during these periods more net monetary benefit can be derived from Hoover Dam. The total volume of water released from Hoover Dam over an ...


Future Of Virginia Fisheries Explored, Susan C. Watkins Mar 1980

Future Of Virginia Fisheries Explored, Susan C. Watkins

William & Mary Environmental Law and Policy Review

No abstract provided.


Position Of The Virginia Intstitute Of Marine Science On The Use Of Hydraulic Dredding For The Taking Of Hard Clams, Herbert M. Austin Feb 1980

Position Of The Virginia Intstitute Of Marine Science On The Use Of Hydraulic Dredding For The Taking Of Hard Clams, Herbert M. Austin

Reports

No abstract provided.


Testimony Before The Subcommittee On Fisheries, And Wildlife Conservation And The Environment Of The Committee On Merchant Marine And Fisheries On H.R. 4890 The Reauthorization Of P.L. 88-309, William J. Hargis Jr. Feb 1980

Testimony Before The Subcommittee On Fisheries, And Wildlife Conservation And The Environment Of The Committee On Merchant Marine And Fisheries On H.R. 4890 The Reauthorization Of P.L. 88-309, William J. Hargis Jr.

Reports

No abstract provided.


The Feasibility Of Processing Fish Aboard The F/V Friesland, Thomas Dykstra Jan 1980

The Feasibility Of Processing Fish Aboard The F/V Friesland, Thomas Dykstra

Theses and Major Papers

Many social, economic and regulatory changes have been occurring in the New England fishing industry over the past few years. These changes demand responses from the individual industry participants. The purpose of this paper is to look at the feasibility of processing onboard the F/V Friesland, as an individual response, in an effort to increase the ex-vessel price of fish resulting in the maintenance of a gross stock and a life style. The F/V Friesland, built in 1978, is an 87 foot stern trawler which participates in the mixed species groundfshery of New England out of the port ...


The Impact Of Extended Jurisdiction To 200 Nautical Miles On The Development And Management Of Fisheries In Western Samoa, Fili Suafoa Jan 1980

The Impact Of Extended Jurisdiction To 200 Nautical Miles On The Development And Management Of Fisheries In Western Samoa, Fili Suafoa

Theses and Major Papers

The consequences of the inevitable acceptance of extended jurisdiction and its impact on the development and management of fisheries in Western Samoa are considered within the framework of the principles outlined at the United Nations Third Conference of the Law of the Sea - Revised Informal Composite Negotiating Text for the Eighth Session 1979. It is pointed out that with the passage of the 200-mile exclusive economic zone, Western Samoa not only has the opportunity to benefit from the harvesting of fish under its jurisdiction, but also must accept the responsibility of ensuring that the resource is rationally managed, and that ...


Fish And Wildlife Mitigation Report : Dickey-Lincoln School Lakes Project, Maine, New England Division, Corps Of Engineers, U. S. Army Engineer Division Jan 1980

Fish And Wildlife Mitigation Report : Dickey-Lincoln School Lakes Project, Maine, New England Division, Corps Of Engineers, U. S. Army Engineer Division

Dickey-Lincoln School Lakes Project

The Dickey Lincoln School Lakes Project is a proposed multipurpose project located on the upper reaches of the St. John River in Aroostook County, Maine. Development would consist of two dams with associated reservoirs and hydroelectric generating facilities, five dikes and transmission lines. A more detailed description of the proposed project and its associated impacts is contained within the Revised Draft Environmental Impact Statement for the proposed project.