University of Massachusetts Amherst
US Department of the Interior
SUNY Plattsburgh
Minnesota State University, Mankato
Physiological Ecology Of Four Endemic Alabama Species And The Exotic Asiatic Weatherfish, Misgurnus Anguillicaudatus (Cantor, 1842),
2017
Auburn University
Physiological Ecology Of Four Endemic Alabama Species And The Exotic Asiatic Weatherfish, Misgurnus Anguillicaudatus (Cantor, 1842), Lindsay M. White, Mark E. Meade, Benjamin A. Staton
Southeastern Fishes Council Proceedings
The occurrence of Asiatic Weatherfish, Misgurnus anguillicaudatus, in Alabama, a state known for its rich biodiversity, has generated concern among conservation managers. The current study used respirometry techniques to investigate the effects of increasing temperature on four native southeastern fishes (one cyprinid, two percids, and one elassomid) and the non-native M. anguillicaudatus. A minimum of five individuals of each species were used, and three experimental temperatures were chosen to represent spring and summer averages of northeast Alabama streams (15, 20, and 25°C). Overall, mean standard metabolic rates (SMRs) for M. anguillicaudatus were low (97.01, 127.75, and 158 ...
Dorr And Fielder 2017 Dcco Too Much Of A Good Thing Fsh.Pdf,
2017
USDA National Wildlife Research Center
Dorr And Fielder 2017 Dcco Too Much Of A Good Thing Fsh.Pdf, Brian S. Dorr, David G. Fielder
Brian S Dorr
Spatial And Seasonal Equilibrium Harvesting In Quota-Managed Multispecies Fisheries,
2017
Iowa State University
Spatial And Seasonal Equilibrium Harvesting In Quota-Managed Multispecies Fisheries, Rajesh Singh, Quinn Weninger
Economics Working Papers
We introduce an ecological-economic model of a spatially and temporally heterogeneous multiple-species fishery. The fishery is regulated with individual transferable fishing quotas that cap landings of individual species during a regulatory cycle, or fishing season. Quotas are neither spatially nor temporally (within-season) delineated and, therefore, fishermen choose where and when to harvest fish. We derive a rational expectation equilibrium for the spatial-temporal harvests, landings, discards, and capital allocations over a representative season. Our results characterize a complex mapping from initial ecological-economic conditions, i.e., stock abundance, prices, technology, and regulations, to outcomes of management interest, e.g., spatial-temporal fishing mortality ...
Rice Hull Bioreactor For Recirculating Aquaculture,
2017
Louisiana State University and Agricultural and Mechanical College
Rice Hull Bioreactor For Recirculating Aquaculture, Marlon A. Greensword
LSU Doctoral Dissertations
The engineering of floating media biofilters has been optimized over the years. The backwashing process has made them more energy and water efficient. Likewise, moving bed bioreactors (MBBR) are gaining interest and popularity because they are relatively affordable to build. Yet, developing countries’ aquaculture production remains largely excluded from the advances made in recirculating aquaculture systems (RAS). This discrepancy is partially driven by the high costs of media such plastic beads and Kaldnes (KMT) media, commonly used in MBBR.
This dissertation evaluates the usability and profitability of rice hulls (RH), an abundant by-product in many developing nations, as a sinking ...
Modelling Walleye Population And Its Cannibalism Effect,
2017
The University of Western Ontario
Modelling Walleye Population And Its Cannibalism Effect, Quan Zhou
Electronic Thesis and Dissertation Repository
Walleye is a very common recreational fish in Canada with a strong cannibalism tendency, such that walleyes with larger sizes will consume their smaller counterparts when food sources are limited or a surplus of adults is present. Cannibalism may be a factor promoting population oscillation. As fish reach a certain age or biological stage (i.e. biological maturity), the number of fish achieving that stage is known as fish recruitment. The objective of this thesis is to model the walleye population with its recruitment and cannibalism effect. A matrix population model has been introduced to characterize the walleye population into ...
Changes In Zooplankton Community, And Seston And Zooplankton Fatty Acid Profiles At The Freshwater/Saltwater Interface Of The Chowan River, North Carolina,
2017
East Carolina University
Changes In Zooplankton Community, And Seston And Zooplankton Fatty Acid Profiles At The Freshwater/Saltwater Interface Of The Chowan River, North Carolina, Deborah A. Lichti, Jacques Rinchard, David G. Kimmel
Environmental Science and Ecology Faculty Publications
The variability in zooplankton fatty acid composition may be an indicator of larval fish habitat quality as fatty acids are linked to fish larval growth and survival. We sampled an anadromous fish nursery, the Chowan River, during spring of 2013 in order to determine how the seston fatty acid composition varied in comparison with the zooplankton community composition and fatty acid composition during the period of anadromous larval fish residency. The seston fatty acid profiles showed no distinct pattern in relation to sampling time or location. The mesozooplankton community composition varied spatially and the fatty acid profiles were typical of ...
Examining The Relationship Between Mesohabitats And Freshwater Mussels In An East Texas River,
2017
University of Texas at Tyler
Examining The Relationship Between Mesohabitats And Freshwater Mussels In An East Texas River, Andrew R. Glen
Biology Theses
North America is home to 302 unionoid species, with approximately 53 occurring in Texas, and are considered one of the most imperiled group of organisms in North America. Several hypotheses have been proposed to explain the spatial distribution of mussels within a stream reach, but only certain hydraulic characteristics appear to be correlated with their distribution. Emerging evidence indicates that freshwater mussels may use flow refugia to remain embedded during high flow events. As the use of hydraulic variables to characterize mussel habitat becomes more widespread, it may be useful to implement sampling that captures these measures. One option may ...
Sea Lamprey (Petromyzon Marinus) As A Functional Link Between Marine And Freshwater Ecosystems,
2017
University of Maine - Main
Sea Lamprey (Petromyzon Marinus) As A Functional Link Between Marine And Freshwater Ecosystems, Daniel M. Weaver
Electronic Theses and Dissertations
Anadromous sea lamprey Petromyzon marinus are native to Atlantic coastal systems and serve as a functional link between marine and freshwater ecosystems. Sea lamprey spend 1–2 years in the ocean parasitizing marine vertebrates before migrating into freshwaters during the spring to spawn. There they construct nests, spawn, then die shortly afterwards. Larvae hatch, bury into fine sediments and reside in streams for generally 6–8 years, but up to 14. Larvae then undergo metamorphosis, a non-feeding period characterized by a series of physical and physiological changes. The juveniles (macropthalmia) then migrate to the ocean to begin the parasitic juvenile ...
A Comparison Of Five Statistical Methods For Predicting Stream Temperature Across Stream Networks,
2017
Utah State University
A Comparison Of Five Statistical Methods For Predicting Stream Temperature Across Stream Networks, Maike F. Holthuijzen
All Graduate Theses and Dissertations
The health of freshwater aquatic systems, particularly stream networks, is mainly influenced by water temperature, which controls biological processes and influences species distributions and aquatic biodiversity. Thermal regimes of rivers are likely to change in the future, due to climate change and other anthropogenic impacts, and our ability to predict stream temperatures will be critical in understanding distribution shifts of aquatic biota. Spatial statistical network models take into account spatial relationships but have drawbacks, including high computation times and data pre-processing requirements. Machine learning techniques and generalized additive models (GAM) are promising alternatives to the SSN model. Two machine learning ...
Bio-Economies Of Scope And The Discard Problem In Multiple Species Fisheries,
2017
Iowa State University
Bio-Economies Of Scope And The Discard Problem In Multiple Species Fisheries, Rajesh Singh, Quinn Weninger
Rajesh Singh
This paper considers the problem of multi-species fisheries management when targeting individual species is costly and at-sea discards of fish by fishermen are unobserved by the regulator. Stock conditions, ecosystem interaction, technological specification, and relative prices under which at sea discards are acute are identified. A dynamic model is developed to balance ecological interdependencies among multiple fish species, and scope economies implicit in a costly targeting technology. Three regulatory regimes, species-specific harvest quotas, landing taxes, and revenue quotas, are contrasted against a hypothetical sole owner problem. An optimal plan under all regimes precludes discarding. For both very low and very ...
Microbiome Analyses Of Pacific White Shrimp (Litopenaeus Vannamei) Collected From Disparate Geographical Locations,
2017
Iowa State University
Microbiome Analyses Of Pacific White Shrimp (Litopenaeus Vannamei) Collected From Disparate Geographical Locations, Arun S. Seetharam, Emily Kawaler, Zhi-Qiang Du, Max F. Rothschild, Andrew J. Severin
Max Rothschild
In this study, the tail muscle microbiota of pacific white shrimp (Litopenaeus vannamei) sourced from five countries across Central and South America and Southeast Asia were determined and compared. The genomic DNA was sequenced at around 10 × coverage for each geographical location and was assembled de novo for comparative analysis. The assembled sequences for all the lines were classified based on their similarity to the sequences in the public database. We found that there is high correlation among the microbiota of shrimp from disparate regions, as well as the presence of some DNA from bacteria known to cause food poisoning ...
Notes On Contributors,
2017
The University of Maine
The Mackerel Fishermen,
2017
Avery Booth Stone
Awakening,
2017
Union, Maine
Little White House,
2017
Summer resident Lubec, Maine
Editor's Note,
2017
University of Maine
Full Issue Volume V,
2017
The University of Maine
The Shellfish Corner: How Many Shellfish Can I Grow On My Farm?,
2017
University of Rhode Island
The Shellfish Corner: How Many Shellfish Can I Grow On My Farm?, Michael A. Rice
Michael A Rice
Ncbi-Blast Programs Optimization On Xsede Resources For Sustainable Aquaculture,
2017
Iowa State University
Ncbi-Blast Programs Optimization On Xsede Resources For Sustainable Aquaculture, Arun S. Seetharam, Antonio Gomez, Catherine M. Purcell, John R. Hyde, Philip D. Blood, Andrew J. Severin
Andrew Severin
The development of genomic resources of non-model organisms is now becoming commonplace as the cost of sequencing continues to decrease. The Genome Informatics Facility in collaboration with the Southwest Fisheries Science Center (SWFSC), NOAA is creating these resources for sustainable aquaculture in Seriola lalandi. Gene prediction and annotation are common steps in the pipeline to generate genomic resources, which are computationally intense and time consuming. In our steps to create genomic resources for Seriola lalandi, we found BLAST to be one of our most rate limiting steps. Therefore, we took advantage of our XSEDE Extended Collaborative Support Services (ECSS) to ...
Measuring Fertilization In Populations Of Sea Scallop (Placopecten Magellanicus): Developing And Testing Methods In The Laboratory And Field,
2017
University of Maine
Measuring Fertilization In Populations Of Sea Scallop (Placopecten Magellanicus): Developing And Testing Methods In The Laboratory And Field, Skylar Bayer
Electronic Theses and Dissertations
Most marine organisms are broadcast spawners, releasing their sperm and eggs into the water column. Methods of measuring in situ fertilization have proven successful with a few model species, which are reviewed in my introductory chapter. However, many commercially exploited species, such as the sea scallop Placopecten magellanicus, have been neglected. Sea scallop populations have greatly increased from fishing closures, but the mechanism behind this response is uncertain, particularly in regard to fertilization. In this dissertation I developed a methodology of measuring fertilization success and spawning events of P. magellanicus, tested it in laboratory and field settings, and developed a ...
