Animal Sciences Commons^™

The Feasibility Of Commercial Scale Culture Of Atlantic Sturgeon, Acipenser Oxyrhynchus, Christopher John Coffing

Biological Sciences Theses & Dissertations

Abstract unavailable.

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 annual …

Future Of Virginia Fisheries Explored, Susan C. Watkins

William & Mary Environmental Law and Policy Review

No abstract provided.

A Post-Impoundment Investigation Of The Beech Fork Drainage Basin, Twelvepole Creek, Wayne And Cabell Counties, West Virginia, Donald Borda

Theses, Dissertations and Capstones

Fish populations were collected at six stations by means of electrofishing to determine the composition after impoundment. A total of 748 fishes weighing about 9 pounds (4 kg) were collected. Seven families representing 31 species were collected and categorized as game, forage and rough fishes. Game fishes made up 9.1 percent of the total number and 22.3 percent of the total weight; forage fishes 83.0 percent by number and 29.7 percent by weight. The average standing crop was 15 pounds per acre.

Benthic invertebrates were collected at six stations by means of a bottom dredge. A total of 1535 specimens …

The Relationship Of Food Conversion Efficiency And Growth Potential In Juvenile Mosquitofish, Gambusia Affinis, Joseph J. Cech Jr., Michael J. Massingill, Wayne A. Wurtsbaugh

Watershed Sciences Faculty Publications

New information concerning respiratory metabolic rates of juvenile mosquitofish (i = 915 mg 02 kg-1 h-1 at 20° C) was applied to existing data on mosquitofish respiration and combined with findings on growth and food consumption rates to determine percentages of net ingested energy used for growth and respiration over a 10- 35° C temperature range. The energy percentage used by mosquitofish for respiration was minimized at 25-30° C while that used for growth (= food conversion efficiency) was maximized at the same temperature. A calculated growth potential index, derived from an overall energy balance equation, was also maximized at …

Potential Of Utilizing Scrap Processed Cheese As A Major Ration Component For Channel Catfish, Calvin J. Haskins, Scott H. Newton

Journal of the Arkansas Academy of Science

Three cages (0.9 m³) were stocked with 200 channel catfish, Ictalurus punctatus Rafinesque, fingerlings (73.7 g avg.) in a 1.5 hectare pond. Two cheese rations were formulated and fed to the catfish; the first consisting of cheese, oil, and vitamin C (C + VC)and the second consisting of cheese, cottonseed meal, oil, trace minerals, and vitamins (CC + VM). A commercial trout ration (TC) was fed as a control. High mortalities occurred in the C + VC diet, thus resulting in premature removal of that cage from the study (after 86 days). A sample of 50 fish from the two …

Evaluation Of A Full-Fat Soybean Ration For Channel Catfish Production In Cages, Scott H. Newton, Walter R. Robison, Calvin J. Haskins

Journal of the Arkansas Academy of Science

An experimental ration consisting of 50% full-fat soybeans, heated 170°C, was compared to a commercial trout chow in a 120-day feeding trial using two stocks of channel catfish, Ictalurus punctatus Rafinesque. Catfish were reared in 0.9 m³ floating cages, with 200 fish per cage, anchored in a 1.5 hectare farm pond. A Central Arkansas stock significantly outperformed a Southeast Arkansas stock for comparisons of net production and food conversion efficiency (FCE), with 92% greater production and 41% better FCE, respectively. Survival was 90% or greater for all fish. There was no significant difference in dress-out weight between the stocks. However, …

The Effects Of Fin Clipping And Tagging On Growth And Behavior Of The Largemouth Bass (Micropterus Salmoides), Daniel M. Daley

Masters Theses

One hundred largemouth bass, ranging in size from 148mm to 385mm, were equally divided into four treatment groups (control, tag only, tag and left pectoral fin clip, and tag and all paired fins clipped) , and placed into a 5.56 hectare pond on 22 May and 25 May 1979. Upon recovery on 28 September 1979, the increase in length from the time of most recent annulus formation was found to be significantly greater in Age I control fish (x̄ = 125mm) than in fish of the same age in the other three treatment groups (x̄ = 110mm, 103mm, and 106mm, …

Repopulation Of Fishes In Riley Creek, Coles County, Illinois Following Nitrogen Fertilizer Pollution, Kim James Carney

Masters Theses

The repopulation of stream fishes was studied from 17 May 1979 to 25 October 1979 following a major kill (100% mortality) caused by nitrogen fertilizer pollution in Riley Creek, Coles County, Illinois. The extent of recovery was determined by comparing post-kill collections with pre-kill survey data that was collected on 25 October 1978.

Repopulation began six days after the abatement of the pollution source. It is suggested that the initial source of repopulation was from the nearest undamaged tributary. The first three reinhabitants in order of appearence were: stonerollers (Campostoma anomalum); creek chubs (Semotilus atromaculatus); and …

Influence Of Dredging And High Discharge On The Ecology Of Black Canyon, Larry J. Paulson, Theron G. Miller, John R. Baker, U.S. Water And Power Resources Service

Publications (WR)

The Water and Power Resources Service is considering dredging in Black Canyon to create a larger forebay to accommodate higher peak discharges and reverse flows for proposed modifications to Hoover Dam. The Black Canyon area from Hoover Dam to Willow Beach supports a heavily utilized trout fishery and is important habitat for the razorback sucker (Xyrauchen texanus) and possibly bonytail chub (Gila elegans). The Water and Power Resources Service initiated this investigation to determine what effect dredging and higher peak-discharges would have on the ecology of Black Canyon.

Food Of Bluegill And Longear Sunfish In Degray Reservoir, Arkansas, 1976, Horace E. Bryant, Thomas E. Moen

Journal of the Arkansas Academy of Science

Stomach contents were examined from 544 bluegill (Lepomis macrochirus) and 709 longear sunfish (L. megalotis) collected from nearshore areas of DeGray Reservoir April-November 1976. Major foods of bluegill (percentage of total weight of food in parentheses) were insects (33), bryozoa (7.3), planktonic crustaceans (6.5), and plant materials (15.4). The major food items contributing to the diet of longear sunfish were insects (52.6%), crayfish (12.5%), fish (7.4%), and plant material (6.7%). Although bluegill and longear sunfish are closely related species, their diets were not as similar as expected: bluegill consumed zooplankton, adult dipterans, and adult ephemeropterans associated with limnetic areas; while …

Food Of Largemouth Bass (Micropterus Salmoides) In Degray Reservoir, Arkansas, 1976, Horace E. Bryant, Thomas E. Moen

Journal of the Arkansas Academy of Science

Stomach contents were examined from 748 largemouth bass, Micropterus salmoides (<125 mm total length), collected from DeGray Reservoir during April-November 1976. Fish constituted 59% by weight of the total diet and occurred in 81% of the stomachs; crayfish made up nearly 38% of the weight and occurred in 24% of the stomachs. Sunfish, the principal fish food (about 28% by weight), were observed in 36% of the stomachs. Shad were the second most important prey (23% by weight and 29% frequency in occurrence). Crayfish constituted about 42% of the total weight of the food of bass 200 mm long or longer, but only 12% in bass less than 200 mm. Crayfish consumption was greatest during the fall.

Growth And Year Class Composition Of The White Bass (Morone Chrysops) In Degray Lake, Arkansas, Thomas E. Moen, Michael R. Dewey

Journal of the Arkansas Academy of Science

No abstract provided.

Aspects Of Larval Ecology Of Squilla Empusa (Crustacea, Stomatopoda) In Chesapeake Bay, Steven G. Morgan

OES Faculty Publications

Larvae of Squilla empusa were collected from the plankton and were laboratory-reared in 16 combinations of temperature and salinity to determine their tolerances. Larvae survived longer and molted more frequently when reared at 25%, and 20° or 25° C, which corresponds to the natural conditions of Chesapeake Bay when the larvae were collected.

A 2 year planktonic survey conducted in the lower region of the bay by the Virginia Institute of Marine Sciences was compared with a survey made at the bay mouth in 1976. The seasonal occurrence of Squilla empusa larvae extended from the last week of July until …

Morphological Variation Among 14 Species Of Callogobius Bleeker (Pisces: Gobiidae), James Francis Mckinney

Biological Sciences Theses & Dissertations

A survey of the variation among the species of the Callogobius complex has been accomplished in order to determine if recognition of more than one genus is warranted for this assemblage of species. Emphasis has been placed on the osteological variation. Relationships among certain species within the Callogobius complex have been exposed. Although there are two well defined species groups within the complex, it is felt that inclusion of all of the examined species within the single genus Callogobius is the most parsimonious course of action.

The Malaysian Fishing Gears And Methods, Mohamed Ibrahim Bin Haji Mohamed

Marine Affairs Theses and Major Papers

There are more than 40 types of fishing gears operated in Malaysia. These gears are classified locally into 11 gear groups based on their principles of operation. These gears have never been fully documented. This investigation attempts to document all the commercially important fishing gears in the country, the technical specifications, methods of operation, identify spacial differences in gears, operation and review the share/lay system operated in the industry.

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

Marine Affairs 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 of Pt. …

The Feasibility Of Increased Utilization Of The Georges Bank Herring Stock, Carder Starr

Marine Affairs Theses and Major Papers

The United States has embarked upon a new era of commercial fisheries management and development with the enactment of the Fishery Conservation and Management Act of 1976 (FCMA). The primary objectives of the FCMA are "to take immediate action to conserve and manage the fishery resources found off the coasts of the U.S." and "to encourage the development of fisheries which are currently underutilized...by the U.S. fishing industry...." One of these underutilized stocks is the Georges Bank herring stock. This study hopes to show that the operation of a fish-processing vessel can be a feasible enterprise with good returns to …

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

Marine Affairs 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 …

State Of The Fisheries Report 1978, Department Of Fisheries And Wildlife, Western Australia

Status Reports of the Fisheries and Aquatic Resources

Western Australia has maintained its position as the top fishing State. The catch in Western Australia of fish, crustaceans, and molluscs in 1977-78 was worth $76 million to the fishermen, which is 36 per cent of the total value for Australia.

Interrelationships Between Benthic Macroinvertebrates And Habitat In A Mountain Stream, John M. Payne

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study to determine habitat differences of benthic macroinvertebrates was conducted on the upper Strawberry River, Utah. The investigation was part of a large scale project to determine minimum stream flow requirements for trout. The effects of time, habitat, depth and velocity on the distribution of benthic fauna were evaluated.

Samples of benthic invertebrates (146 total) were collected every 2 months at 8 stations on the river from November, 1975 through August, 1976. Representatives of 59 taxa were collected. Eight taxa comprised 90 percent of the mean annual community standing crop in numbers. Biomass was not dominated by any group …

Biology, Reproductive Potential And The Impact Of Fishing Pressure On The Bluegill Fishery Of Pelican Lake, Uintah County, Utah, Bob D. Burdick

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Certain aspects of the biology of two species of fish, bluegill (Lepomis macrochirus) and largemouth bass (Micropterus salmoides), and the assessment of fishing pressure upon the sport fishery of Pelican Lake, Uintah County, Utah, a 680 ha warmwater lake, were studied between April 1, 1976 and June 30, 1978. The growth rate of bluegills (sexes combined) was fairly rapid; the mean back-calculated total lengths from ages one through nine were 55, 112, 166, 194, 211, 229, 245, 256 and 259 mm. The growth of largemouth bass was 104, 194, 271, 316, 350, 405 and 416 mm …

Ua66/6/2 Proceedings Of The Third Symposium On Larval Fish, Wku Biology

WKU Administration Documents

Proceedings of the Third Symposium on Larvel Fish. Contains:

• Hoyt, Robert, et al. Observations on the Larval Ecology of the Smallmouth Buffalo
• Conner, John. Identification of Larval Sunfishes (Centrarchidae: Elassomidae) from Southern Louisiana
• Snyder, Darrel. Myomere and Vertebra Counts of the North American Cyprinids and Catostomids
• Baker, James. Larval Development of the Greenside Darter, Etheostoma blennioides newmanii
• Fuiman, Lee. Materials for a Description of Lake Chubsucker (Erimyzon sucetta) Larvae
• Kranz, Vincent et al. Development of the Young of the Creek Chub Semotilus atromaculatus
• Graser, Lee. Spatio-temporal Distributions of t Clupeid Larvae in Barkley Reservoir
• Kindschi, Greg, et al. Notes …

The Life History And Ecology Of Ptilostomis Postica (Walker) (Trichoptera: Phryganeidae) In Greenbottom Swamp, Cabell County, West Virginia, Mary Beth Roush

Theses, Dissertations and Capstones

The life histoy and ecology of Ptilostomis postica (Walker) from Greenbottom swamp in Cabell County, West Virginia were investigated from December 1977 to December 1978, Length-frequency histograms indicate the life cycle is uriivoltine. Larvae achieved their greatest growth rate (75%) from fall to winter. Case length showed its greatest increase (70.3%) for this same period. There was high correlation between case length and body length in fall (r=0.72) and winter (r=0.87), however, a low correlation (r=0.18) was found in spring. The diet of the larvae changed from carnivorous in fall and winter to omnivorous in spring. Pupation began at the …

Proposed Environmental Impacts Of The Gallipolis Locks And Dam Replacement, Ohio River Mile 279.2, On The Benthic Macroinvertebrates And Fishes Of Flatfoot Creek, Mason County, West Virginia, William L. Cremeans Jr.

Theses, Dissertations and Capstones

The Gallipolis Locks and Dam at Ohio River Mile 279.2 is soon to be modified or replaced. Construction in the area will effect the lower portion of the small drainage basin (14.61 km) of Flatfoot Creek. Depending on the action taken, a large proportion of Flatfoot Creek and/or a tributary of Mud Run will have severe ecological alterations. For this reason, Flatfoot Creek was investigated for water quality, benthic macroinvertebrates, fish populations and the feeding requirements of the fishes.

A physio-chemical analysis was made of Flatfoot creek. With the exception of five parameters, the creek met guidelines set by state …

Fisheries Report No. 37 - An Inventory Of The Marine Resources Of The Bunbury Marine Area And Geographe Bay, Michael H. Walker

Fisheries Research Reports

The marine resources of the Geographe Bay/Bunbury marine area were investigated using a variety of fishing gear i.e. set lines, set nets, trawls, ring nets, beach seines, hand lines, trolling lines, traps and light attraction at night. All the ftsh species caught were documented as to breeding state and food habits.

Commercial species encountered as adults during fishing operations were: bronze whaler, whiskery and gummy sharks, Westralian jewfish, Australian herring, skippy, flathead, oriental bonito, blue and sandy sprat, pilchard, mulloway, whiting, yellowtail scad, flounder, and leatherjacket and as juveniles were: skippy, yellowtail scad, tailor, southern sea garfish, pilchard, blue and …

Fisheries Report No 33 - The Western Rock Lobster Fishery 1975 - 1976, G. R. Morgan, E H. Barker

Fisheries Research Reports

iTshe fishery for the western rock lobster Panultrus ecygnus one of the most important single fisheries in Australia and an important export earner for the State. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and which are designed to limit the total effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery both to ensure that the effort is remaining within the accepted limits and that the regulations are adequately performing their function of maintaining reasonably stable catches. …

Fisheries Report No 34 - The Status Of The Salt-Water Crocodile In The Glenelg, Prince Regent And Ord River Systems, Kimberley, Western Australia, A. A. Burbidge, H. Messel

Fisheries Research Reports

Counts were made of Salt-water Crocodiles (Crocodylus porosus) in the estuarine portions of the Glenelg, Prince Regent and Ord River systems of the Kimberley Division, Western Australia. During the survey 581 crocodiles were seen, including 143 hatchlings. The number of non-hatchling crocodiles in present the Glenelg system is estimated to be 200 to 259, in the Prince Regent 190 to 246 and in the Ord 235 to 306 (95% confidence limits).

The number of non-hatchling crocodiles present in the six Kimberley river systems now counted is estimated to be between 957 and 1243 (95% confidence limits) and we believe that …

Fisheries Report No 38 - The Shark Bay Prawn Fishery (1970 - 1976), J. W. Penn, R. W. Stalker

Fisheries Research Reports

The existence of prawn stocks in Shark Bay, Western Australia, has been known since 1904 when the sailing ketch "Rip" on charter to the Western Australian Government, trawled large quantities of prawns from the area between Bernier Island and the mainland, Gale (1905). Although the Fisheries research vessel "Lancelin" trawled potentially commercial quantities of prawns from Shark Bay in the early 1950's, it was not until 1962 that a regular fishery was begun.

Today the prawn stocks of Shark Bay support Western Australia's largest and most consistent prawn fishery, having an annual production currently exceeding 2 000 tonnes. The catch …

A Taxonomic And Distributional Study Of The Crayfishes (Decapoda: Cambaridea) Of West Virginia With Diagnostic Keys To Species Of The Genera Cambarus And Orconectes, Steven M. Lawton

Theses, Dissertations and Capstones

This thesis is the first extensive investigation of West Virginia's crayfishes since Newcombe (1929) surveyed the state's fauna 50 years ago. Records, collections, and specimens were obtained from the 7 drainage areas of the state. Crayfish were collected from early spring through the fall of 1978. Both aquatic species and burrowers were included in the study. Presently, seventeen species and subspecies are known to exist in West Virginia. The genus Cambarus contains 10 of the total species of which three are primary burrowers. Cambarus nerterius, from the cavernous Greenbrier and Pocahontas counties of the Greenbrier River drainage, is the state's …