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Full-Text Articles in Aquaculture and Fisheries

Landscapes, Water Quality And Aquatic Assemblages, Nels H. Troelstrup Jr. Jan 2019

Landscapes, Water Quality And Aquatic Assemblages, Nels H. Troelstrup Jr.

Oak Lake Field Station 30th Anniversary Retreat Presentations

No abstract provided.


Pyganodon Grandis Growth Along A Trophic State Gradient In Eastern South Dakota Lakes, Katherine M. Wollman, Nels H. Troelstrup Jr. Jan 2019

Pyganodon Grandis Growth Along A Trophic State Gradient In Eastern South Dakota Lakes, Katherine M. Wollman, Nels H. Troelstrup Jr.

Oak Lake Field Station 30th Anniversary Retreat Presentations

No abstract provided.


Brawn (Kristin E.) Research Materials, 1995-2002, Special Collections, Raymond H. Fogler Library, University Of Maine Jan 2018

Brawn (Kristin E.) Research Materials, 1995-2002, Special Collections, Raymond H. Fogler Library, University Of Maine

Finding Aids

Materials gathered by Kristin E. Brawn in the course of research for her master's thesis at the University of Maine, completed in 2002 and entitled, An Examination of the Georges River Clam Management Program.

The Georges River Clam Management Program was a multi-town cooperative soft-shell clam harvesting agreement and management program entered into in 1996 and involving the towns of Thomaston, St. George, South Thomaston, Warren and Cushing, Maine.

The record group includes copies of correspondence, policy development documents, agreements, and minutes of meetings of the steering committee, joint board of selectmen, clam committee, and shellfish and shellfish management ...


River Report. State Of The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2017, Environmental Protection Board, City Of Jacksonville Jan 2017

River Report. State Of The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2017, Environmental Protection Board, City Of Jacksonville

State of the River Report

No abstract provided.


Dredging Land Reclamation Causing Mucus Development In Massive Spherical Corals In The Spratly Islands, South China Sea: The Effects On China’S Fishing Industry, Tiffany K. Ho Jan 2017

Dredging Land Reclamation Causing Mucus Development In Massive Spherical Corals In The Spratly Islands, South China Sea: The Effects On China’S Fishing Industry, Tiffany K. Ho

Undergraduate Research Posters

Images from Asia Maritime Transparency Initiative depicted huge masses of white coral mucus secreted from coral reefs in the Spratly Islands of the South China Sea, an area where several land reclamation projects are occurring. The purpose of this research was to understand how increased sedimentation levels from the dredging land reclamation method affects mucus development in massive corals, such as Acropora, located in these reefs. Journal articles that focused on the biology of coral mucus, bacterial communities associated with coral tissue, mucus, and seawater, coral mortality from different environment impacts, coral coverage of reefs in Spratly Islands, and symbiotic ...


Brain Morphology Of Madtom Catfishes (Noturus) Reflects Their Ecology, Autumn Goble, David J. Eisenhour May 2016

Brain Morphology Of Madtom Catfishes (Noturus) Reflects Their Ecology, Autumn Goble, David J. Eisenhour

Celebration of Student Scholarship Posters Archive

No abstract provided.


Optimal Feeding Time And Duration Of Hybrid Crappie Kept Indoors, Wiles N. Brandon, Gregory A. Dudenhoeffer, Thomas R. Omara-Alwala Jan 2016

Optimal Feeding Time And Duration Of Hybrid Crappie Kept Indoors, Wiles N. Brandon, Gregory A. Dudenhoeffer, Thomas R. Omara-Alwala

Cooperative Extension Research Publications

Crappie (Pomoxis spp.) is a popular sport fish with food fish potential. Feeding behavioral patterns should be considered prior to nutrtitional studies. The objective of this study was to determine the best feeding time and duration for hybrid crappie raised in indoor recirculating aquaculture systems. Three feeding treatments with three replciates consisted of two 12 hour feeding periods initiated at 0800 (12h-amLD) and 1700 (12h-pmLD) and a 24 feeding period started at 0800 (24h-amLD). Treatments in experimental tanks were arranged in a random block design and stocked with 14 hybrid fingerlings fed for 12 weeks. Fingerling fish were spwaned in ...


The Size Relationship Of 12 Days Post-Exodus Larvae With 56 Day Post-Exodus Fingerlings Regarding Growth And Survival In Bluegill (Lempomis Macrochirus), J.L. Schulte, James E. Wetzel Jan 2016

The Size Relationship Of 12 Days Post-Exodus Larvae With 56 Day Post-Exodus Fingerlings Regarding Growth And Survival In Bluegill (Lempomis Macrochirus), J.L. Schulte, James E. Wetzel

Cooperative Extension Research Publications

Low survival and quality of early life-stage bluegill is an obstacle to viable production where size may influence weaning efficiency. Herein, we investigate through two trials the effects of fry size 12-d post-exodus on total length, weight, production and survival through 56-d post-exodus. Full sibling broods (trial 1=10, trial 2=6) were reared with feedings of brine shrimp Artemia sp. nauplii (BS) through 12-d post-exodus (PE). Broods of trial 1 were visual sorted 12 d PE into small and large size groups. Fry (n = 25) from each size group were sampled for measured total length (TL) and weight. Starting ...


Biweekly Growth Characteristics Of Juvenile Bluegill Fed Different Protein Diets, Wiles N. Brandon, Gregory A. Dudenhoeffer, Yongfang Zhang, Thomas R. Omara-Alwala Jan 2016

Biweekly Growth Characteristics Of Juvenile Bluegill Fed Different Protein Diets, Wiles N. Brandon, Gregory A. Dudenhoeffer, Yongfang Zhang, Thomas R. Omara-Alwala

Cooperative Extension Research Publications

This study evaluated growth rates of juvenile bluegill (Lepomis macrochius) fed different protein levels, raised indoors. Six experimental diets containing protein levels of 32, 35, 38, 41, 44, and 47% with 346 kcal/g energy were fed to four replicates of 12 fish with initial mean weight of 24.9±0.51g. Fish were fed by hand to satiation three times daily for 16 weeks. Percent weight gain, for fish fed 32, 35, 38, 41, 44, and 47% protein diets were 180.5±43.8, 203.6±32.33, 256.4±19.4, 235.8±20.63, 249.1±19 ...


The Effects Of Dietary Protein-To-Energy Ratio On Juvenile Bluegill (Lepomis Macrochirus) Growth With Observations Of Sexual Dimorphism, K. Vandeloecht, Gregory A. Dudenhoeffer, Yongfang Zhang, T.R. Omara-Alwala Jan 2016

The Effects Of Dietary Protein-To-Energy Ratio On Juvenile Bluegill (Lepomis Macrochirus) Growth With Observations Of Sexual Dimorphism, K. Vandeloecht, Gregory A. Dudenhoeffer, Yongfang Zhang, T.R. Omara-Alwala

Cooperative Extension Research Publications

Bluegill is a promising aquaculture species in the Midwest. males are typically larger than females. However, there is little or no information on nutritional differences between sexes and protein-to-energy ratio. The objective of this study was to characterize the protein-to-energy ratio in juvenile bluegill with observations on gender differences. Bluegill (20-30g) were fed diets consisting of 35% protein with 14, 16, and 18% lipids and 38% protein with 12, 14, and 16% lipids. Four replicates of 12 fish each were fed the diets for 16 weeks. Terminal mean body weights, lengths, liver wights, visceral weights, hepatic somatics indices (HSI), and ...


The Distribution Of Α-Amylase Activity Along The Digestive Tract Of Juvenile Bluegill (Lepomis Macrochirus) And Its Comparison With Selected Fish Species, Namrata Giri, Yongfang Zhang, Gregory A. Dudenhoeffer, Thomas R. Omara-Alwala Jan 2016

The Distribution Of Α-Amylase Activity Along The Digestive Tract Of Juvenile Bluegill (Lepomis Macrochirus) And Its Comparison With Selected Fish Species, Namrata Giri, Yongfang Zhang, Gregory A. Dudenhoeffer, Thomas R. Omara-Alwala

Cooperative Extension Research Publications

Carbohydrates are the least expensive form of dietary energy for animals. Although fish don't have specific requirements for dietary carbohydrates, they must be provided with the appropriate levels of carbohydrates in their diets. Moderate levels of carbohydrate could support fishs' better growth performance and may decrease the use of the more expensive protein and lipids in the diet. Different fish have different ability to utilize digestible carbohydrates, which may relate to the relative amount of amylase activity present in the digestive system of the various species. α-amylase is a key enzyme for carbohydrate digestion. Bluegill, an important forage and ...


Amino Acid Profiles In The Tissues Of Juvenile Bluegill (Lepomis Macrochirus) From The Wild And Commercially-Fed Fish, Yongfang Zhang, Gregory A. Dudenhoeffer, Namrata Giri, James E. Wetzel Jan 2016

Amino Acid Profiles In The Tissues Of Juvenile Bluegill (Lepomis Macrochirus) From The Wild And Commercially-Fed Fish, Yongfang Zhang, Gregory A. Dudenhoeffer, Namrata Giri, James E. Wetzel

Cooperative Extension Research Publications

Amino acid profiles of fish tissues and fish eggs have been extensively investigated in some fish species. Amino acid profiles are helpful in quantifying the indispensable amino acid requirements for these fish. Bluegill is a major forage fish for the largemouth bass (Micropterus samoides) and an important recreational fish throughout the US. The demand for bleugill as a food fish has increased recently. However, the information on the amino acid profiles of its eggs and tissues is lacking. The objectve of this study was to determine the amino acid profiles of the muscles and whole body of the 1-2 g ...


Effects Of Soybean Meal Substitution For Fish Meal In Diets Of Juvenile Bluegill (Lepomis Macrochrius), K. Stuckenschneider, A. Allen, A. Weckenborg, Gregory A. Dudenhoeffer Jan 2016

Effects Of Soybean Meal Substitution For Fish Meal In Diets Of Juvenile Bluegill (Lepomis Macrochrius), K. Stuckenschneider, A. Allen, A. Weckenborg, Gregory A. Dudenhoeffer

Cooperative Extension Research Publications

Bluegill has potential for production as a food fish. Feed is 40-60% of total production costs. Few studies have been conducted on bluegill replacing fish meal with soybean meal, which is a less expensive plant protein source. The objective of this experiment was to determine the effect of 25, 50, 75% soybean meal substitution of fish meal protein in juvenile bluegill diets. Treatments consisted of a 38% crude protein control diet, and diets with 25, 50, and 75% of fish meal replaced with soybean meal (SB Sub). All diets were insonitrogenous and isocaloric. A completely randomized block design was used ...


The Effect Of Dietary Protein Level On The Growth Performance And Digestive Protease Activity In Juvenile Bluegill (Lepomis Macrochrius), Yongfang Zhang, Gregory A. Dudenhoeffer, Thomas R. Omara-Alawla Jan 2016

The Effect Of Dietary Protein Level On The Growth Performance And Digestive Protease Activity In Juvenile Bluegill (Lepomis Macrochrius), Yongfang Zhang, Gregory A. Dudenhoeffer, Thomas R. Omara-Alawla

Cooperative Extension Research Publications

A 16-week feeding experiment was conducting in an indoor recirculating aquaculture system (RAS) to determine the effects of dietary protein level on the growth and digestive protease activity in juvenile bluegills. Six isocaloric experimental diets were forumalted with 32%, 35%, 38%, 41%, 44%, and 47% levels of protein. Menhdaen fish meal was use as the sole protein source. Juvenile bluegills of 24.91 ± 0.50 g initial weight were distributed into 24 151 L tanks with 12 fish each. Each diet had four replications. Fish were fed to satiation three times a day by hand. At the termination, there no ...


River Report. State Of The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2016, Environmental Protection Board, City Of Jacksonville Jan 2016

River Report. State Of The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2016, Environmental Protection Board, City Of Jacksonville

State of the River Report

No abstract provided.


Effects Of Chemical Preservatives On Weights And Lengths Of Bluegill Larvae, Scott M. Welch, Gregory A. Dudenhoeffer, Thomas R. Omara-Alawla Jan 2016

Effects Of Chemical Preservatives On Weights And Lengths Of Bluegill Larvae, Scott M. Welch, Gregory A. Dudenhoeffer, Thomas R. Omara-Alawla

Cooperative Extension Research Publications

Measuring the lenghts and weights of live fish larvae can be tedious and time-consuming. This constraint could be alleviated by preserving the fish larvae in appropriate chemicals for later measurements. There is little or no information on the effects of preservatives on Bluegill larvae. The objective of this study was to determine the effects of five different common preservatives on Bluegill larvae. Individual weights and lengths of fish were measured and then the larvae were preserved for 7 or 26 days. Preservatives were 5% formalin, 10% formalin, 30% ethanol at -19 *C, 70% ethanol, and 90% ethanol. Preliminary average weights ...


Ocean Food Systems, Barry A. Costa-Pierce Mar 2015

Ocean Food Systems, Barry A. Costa-Pierce

Marine Sciences Faculty Presentations

Presentation given during session on Food Justice, where Barton Seaver, Director of the Healthy and Sustainable Food Program in the T.H. Chan School of Public Health at Harvard, described a great nutrition and health crisis in America perpetuated by groups demarketing seafood and promoting meat in the American diet. Seaver noted that Americans consume about 167 lbs. of meat a year and only 14 lbs. of seafood, leading to connected public health and environmental crises, heart disease, and obesity.

According to presenter Barry Costa-Pierce:

Seafood systems in the USA are our most insane foods; America imports nearly every seafood ...


Navigating A Pathway Toward Colorado's Water Future: A Review And Recommendations On Colorado's Draft Water Plan, Lawrence J. Macdonnell, Colorado Water Working Group Jan 2015

Navigating A Pathway Toward Colorado's Water Future: A Review And Recommendations On Colorado's Draft Water Plan, Lawrence J. Macdonnell, Colorado Water Working Group

Books, Reports, and Studies

40 pages (includes color illustrations).


River Report. State Of The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2015, Environmental Protection Board, City Of Jacksonville Jan 2015

River Report. State Of The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2015, Environmental Protection Board, City Of Jacksonville

State of the River Report

No abstract provided.


Tracking Movements Of Ambystoma Tigrinum Using Radio Telemetry, Heather L. Waye, Kirsten T. Sharpe Apr 2014

Tracking Movements Of Ambystoma Tigrinum Using Radio Telemetry, Heather L. Waye, Kirsten T. Sharpe

Undergraduate Research Symposium 2014

The eastern tiger salamander (Ambystoma tigrinum) is a widely distributed amphibian ranging from Northern Minnesota, down to Florida, and over to the east coast of the United States (Oldfield and Moriarty, 1994). As populations within the species are diverse and seldom studies have been done in the area of radio telemetry in tiger salamanders, there is a need for information in this field. This project was the first of its kind to be implemented in Minnesota.

In an effort to more fully understand the ecology of this species, this research attempts to provide vital information that will allow a better ...


State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2014, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University Jan 2014

State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2014, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University

State of the River Report

No abstract provided.


Reported Incidences Of Parasitic Infections In Marine Mammals From 1892 To 1978, John R. Felix Sep 2013

Reported Incidences Of Parasitic Infections In Marine Mammals From 1892 To 1978, John R. Felix

Zea E-Books

The role of parasites in the lives and deaths of marine mammals has been scrutinized by biologists for decades, but the scientific literature prior to 1978 has been difficult to acquire and time-consuming to search. Now this new and extensive bibliography gives researchers a convenient resource for reviewing the classical literature on parasites of marine mammals so that historical infection prevalence and geographical distribution can be easily and properly assessed. This book contains detailed information about accepted (or suspected) taxonomic synonyms and geographical information about the host and/or parasite, covering the parasite groups Acanthocephala, Acarina, Anoplura, Cestoda, Nematoda, and ...


Marine Resource Bulletin Vol. 45, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science Jan 2013

Marine Resource Bulletin Vol. 45, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

In This Issue

Taking Stock of Working Waterfronts 2

An inventory of Virginia’s working waterfronts will help communities maintain the water access that is crucial to a variety of marine business and recreational uses.

Up Close 6

Virginia Sea Grant researcher Jessica Thompson and her students are taking a careful look at how an important little fish uses man-made living shorelines.

Global Aquaculture Starts at Home 8

Aquaculture is an important component of the future world food supply, and VASG staff are helping ensure it will be profitable and safe —in Virginia and around the world.

Virginia Sea Grant ...


Bivalve Molluscs: Barometers Of Climate Change In Arctic Marine Systems, Roger Mann, Daphne M. Munroe, Eric N. Powell, Eileen E. Hoffmann, John M. Klinck Jan 2013

Bivalve Molluscs: Barometers Of Climate Change In Arctic Marine Systems, Roger Mann, Daphne M. Munroe, Eric N. Powell, Eileen E. Hoffmann, John M. Klinck

VIMS Books and Book Chapters

Bivalve mollusks store a complete history of their life in the growth lines in their valves. Through sclerochronology, in combination with isotope signatures, it is possible to reconstruct both post-recruitment growth history at the individual level and commensurate environmental records of temperature and salinity. Growth patterns are integrators of local primary productivity; spatial and temporal changes in growth illustrate commensurate patterns of food availability. Mactrid clams are long-lived, benthic dominant species found on inner continental shelves throughout the Northern Hemisphere where they variously support major fisheries (Spisula solidissima in the Mid-Atlantic Bight, Mactromeris polynyma in eastern Canada, Spisula sachalinensis in ...


State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2013, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University Jan 2013

State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2013, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University

State of the River Report

No abstract provided.


Marine Resource Bulletin Vol. 44, No. 2, Virginia Sea Grant, Virginia Institute Of Marine Science Jul 2012

Marine Resource Bulletin Vol. 44, No. 2, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

In This Issue

Research Ready 2

Virginia Sea Grant supports a portfolio of science and social science research that has tangible benefits for coastal ecosystems and communities. Some of these exciting research efforts are featured in this issue.

Terrapin Files 4

Diamondback terrapins face a variety of threats—from coastal development to crab fishing. A team of VASG-funded researchers are mapping terrapin habitat and threats to aid in the development of effective management strategies.

Nutrient Flow in Clam Aquaculture 8

Virginia’s Eastern Shore is home to a fast-growing clam aquaculture in - dustry. This photo-essay features research on the effects ...


State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2012, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University Jan 2012

State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2012, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University

State of the River Report

No abstract provided.


Marine Resource Bulletin Vol. 44, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science Jan 2012

Marine Resource Bulletin Vol. 44, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

In This Issue

Focus on Students 2

Virginia Sea Grant is helping to train the next generation of experts— from undergraduate marketing students to Ph.D. researchers to photog - raphy interns. Throughout this issue, we feature exciting student work.

Leading Learning 4

A team of students and faculty from the University of Virginia are help - ing the City of Virginia Beach prepare for and adapt to sea level rise.

Tasting the Wares 8

More than 200 people attended the Tidewater Oyster Gardeners Association’s 2nd Annual Half Shell Oyster Tasting event in November. This photo-essay presents some of the images ...


Marine Resource Bulletin Vol. 43, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science Jan 2011

Marine Resource Bulletin Vol. 43, No. 1, Virginia Sea Grant, Virginia Institute Of Marine Science

Virginia Marine Resource Bulletin

In This Issue

Lessons in Green Fish Farming 2

One Eastern Shore aquaculture operation is pioneering the use of alternative energy solutions in Virginia fish farming—and hoping to set an example for other marine businesses in Virginia and beyond.

Building a Living Shoreline 6

This fall at Deltaville Yachting Center, volunteers gathered to help the owners find a more natural way of combatting coastal erosion. See how they did it in this photo-essay.

Working Waterfronts and Waterways 8

Coastal populations are booming, making access to the water a national problem. Virginia Sea Grant is collaborating with several other programs ...


State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2011, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University Jan 2011

State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2011, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University

State of the River Report

No abstract provided.