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2013

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Articles 1 - 30 of 179

Full-Text Articles in Aquaculture and Fisheries

Evaluation Of Striped Bass Stocks In Virginia, Monitoring And Tagging Studies, 2010-2014 Progress Report, 1 September 2012 - 31 August 2013, Philip W. Sadler, Matthew W. Smith, John M. Hoenig, Shelley E. Sullivan, Robert E. Harris, Lydia M. Goins Dec 2013

Evaluation Of Striped Bass Stocks In Virginia, Monitoring And Tagging Studies, 2010-2014 Progress Report, 1 September 2012 - 31 August 2013, Philip W. Sadler, Matthew W. Smith, John M. Hoenig, Shelley E. Sullivan, Robert E. Harris, Lydia M. Goins

Reports

This report presents the results of striped bass (Morone saxatilis) tagging and monitoring activities in Virginia during the period 1 September 2012 through 31 August 2013. It includes an assessment of the biological characteristics of striped bass taken from the 2013 spring spawning run, estimates of annual survival and fishing mortality based on annual spring tagging, and the results of the study that documents the prevalence of mycobacterial infections of striped bass in Chesapeake Bay. The information contained in this report is required by the Atlantic States Marine Fisheries Commission and is used to implement a coordinated management plan for ...


A Population Model For Walleye In Nebraska Irrigation Reservoirs, Robert A. Kill Dec 2013

A Population Model For Walleye In Nebraska Irrigation Reservoirs, Robert A. Kill

Dissertations & Theses in Natural Resources

Understanding how and why fish population size changes between years is a central theme in fisheries ecology. Fishery agencies have limited time and financial resources, thus there is a need for a quantitative way to direct the limited time and financial resources so agencies can manage fisheries more efficiently. I developed a tool for fishery managers that synthesizes common population indices and evaluated the relative importance of those indices given varying uncertainty in age-0 walleye Sander vitreus survival. Under most circumstances, I determined that resources are best utilized in reducing age-0 survival uncertainty when understanding walleye population growth. I applied ...


Determining Scaphirhynchus Sturgeon Population Demographics And Dynamics: Implications For Range-Wide Management, Recovery, And Conservation, Martin J. Hamel Dec 2013

Determining Scaphirhynchus Sturgeon Population Demographics And Dynamics: Implications For Range-Wide Management, Recovery, And Conservation, Martin J. Hamel

Dissertations & Theses in Natural Resources

Sturgeons (Acipenseridae) have experienced world-wide declines as a result of anthropogenic effects such as over-harvest, habitat degradation, altered flow regimes, and pollution. Nearly all European and Asian sturgeon species have experienced population declines and have subsequently been classified as either threatened or endangered. North American sturgeons have experienced a similar plight in that all eight native sturgeon species are listed as endangered, threatened, or of special concern. Direct linkages between North American sturgeon declines and anthropogenic effects are difficult to assess due to scale considerations, fluctuating environmental conditions, difficulty in capture, and the interaction of all these effects. To recover ...


A Study Of The Social And Economic Capacity Of Eastern Maine Fishing Communities: How Can Small-Scale Fishing Communities Participate In Catch Share Programs?, Teresa R. Johnson, Kevin Athearn Nov 2013

A Study Of The Social And Economic Capacity Of Eastern Maine Fishing Communities: How Can Small-Scale Fishing Communities Participate In Catch Share Programs?, Teresa R. Johnson, Kevin Athearn

University of Maine Office of Research Administration: Grant Reports

This study aimed to assess the degree to which small-scale, fishery-dependent communities in eastern Maine can participate in the catch share system for New England groundfish. Catch share programs can take on a variety of forms, including: harvesting cooperatives, individual quotas, individual transferable quotas, or territorial user fishing rights (Holland and Wiersma 2010). In New England the regional Fishery Management Council implemented a catch share program beginning in 2010, known as sectors, where portions of the total allowable catch have been allocated to groups of fishermen. As managers continue to develop catch shares, and stocks hopefully rebuild, it is critical ...


Cnh: Collaborative Research: Direct And Indirect Coupling Of Fisheries Through Economic, Regulatory, Environmental, And Ecological Linkages, Andrew J. Pershing, Yong Chen, Jeffrey Runge Nov 2013

Cnh: Collaborative Research: Direct And Indirect Coupling Of Fisheries Through Economic, Regulatory, Environmental, And Ecological Linkages, Andrew J. Pershing, Yong Chen, Jeffrey Runge

University of Maine Office of Research Administration: Grant Reports

The productivity and resilience of fisheries are subject to a multitude of dynamic and interrelated influences that arise from complex coupling of fish populations with the natural and human systems of which they are a part. With few exceptions, fisheries currently are managed independently, ignoring important natural and human linkages among them. The biological productivity, sustainability, and consequently human benefits of complex fishery systems may be substantially increased if these linkages are better understood and if this understanding is applied to management. The American lobster (Homarus americanus), Atlantic herring (Clupea harengus) and Northeast multispecies groundfish fisheries in the Gulf of ...


Applying Life Cycle Assessment (Lca) To Aquaculture: A Case Study Of The Tasmanian Salmon Industry, A White, Daryl Mcphee, Tor Hundloe Nov 2013

Applying Life Cycle Assessment (Lca) To Aquaculture: A Case Study Of The Tasmanian Salmon Industry, A White, Daryl Mcphee, Tor Hundloe

Daryl McPhee

No abstract provided.


Future Management And Governance Of The Queensland East Coast Inshore Finfish Fishery, Daryl Mcphee Nov 2013

Future Management And Governance Of The Queensland East Coast Inshore Finfish Fishery, Daryl Mcphee

Daryl McPhee

No abstract provided.


Marine Park Planning And Fisheries Management In Australia: Understanding The Conflict And Designing A Better Future, Daryl Mcphee Nov 2013

Marine Park Planning And Fisheries Management In Australia: Understanding The Conflict And Designing A Better Future, Daryl Mcphee

Daryl McPhee

No abstract provided.


Likely Effectiveness Of Netting Or Other Capture Programs As A Shark Hazard Mitigation Strategy Under Western Australian Conditions, Daryl Mcphee Nov 2013

Likely Effectiveness Of Netting Or Other Capture Programs As A Shark Hazard Mitigation Strategy Under Western Australian Conditions, Daryl Mcphee

Daryl McPhee

No abstract provided.


Impacts Of The Moreton Bay Marine Park Rezoning On Commercial Fishermen, Casper Van De Greer, Morena Mills, Vanessa Adams, Robert Pressey, Daryl Mcphee Nov 2013

Impacts Of The Moreton Bay Marine Park Rezoning On Commercial Fishermen, Casper Van De Greer, Morena Mills, Vanessa Adams, Robert Pressey, Daryl Mcphee

Daryl McPhee

The design of marine protected areas now typically incorporates socioeconomic data to minimize potential negative impacts on stakeholders. However, these data have limitations that are not well understood. Furthermore, whether the application of socioeconomic data in planning actually reduces avoidable negative impacts on stakeholders is rarely evaluated.

This study assessed impacts on commercial fishermen of the rezoning of the Moreton Bay Marine Park, in south eastern Queensland. Specifically, this study (1) compared estimates of opportunity costs of new no-take zones from before and after the rezoning was implemented, and (2) identified impacts of the new zoning scheme on fishing businesses ...


Walleye And White Bass Recruitment In Southwest Nebraska Irrigation Reservoirs, Jason Andrew Deboer Nov 2013

Walleye And White Bass Recruitment In Southwest Nebraska Irrigation Reservoirs, Jason Andrew Deboer

Dissertations & Theses in Natural Resources

Walleye Sander vitreus and white bass Morone chrysops are among the most popular sportfish in the reservoirs of the Great Plains. Despite considerable effort by the Nebraska Game and Parks Commission stocking walleye and managing reservoirs for walleye and white bass, populations of walleye and white bass in southwest Nebraska reservoirs are dynamic, as erratic recruitment has led to “boom and bust” fisheries for these two species. We investigated 1) factors regulating walleye and white bass recruitment during an 18-year period at five reservoirs, and 2) walleye spawning ecology at two reservoirs that differ in their degree of environmental variability ...


Lipid And Fatty Acid Differences In Lake Trout (Salvelinus Namaycush) Eggs From The Great Lakes, Cayuga Lake, And Lake Champlain, Robert Carl Louis Geroux Oct 2013

Lipid And Fatty Acid Differences In Lake Trout (Salvelinus Namaycush) Eggs From The Great Lakes, Cayuga Lake, And Lake Champlain, Robert Carl Louis Geroux

Environmental Science and Ecology Theses

The main objectives of this study were to determine and compare fatty acid signatures (FAS) of lake trout eggs within and among the Great Lakes region. Fifteen sites were sampled over 2 years, including six sites in Lake Michigan, four sites in Lake Huron and one site each in Lake Ontario, Lake Superior, Lake Champlain, and Cayuga Lake. A total of 518 egg samples were quantified. A combination of univariate and multivariate statistical analyses was used to assess spatial and temporal differences in FAS in both the neutral lipid (NL) and phospholipid (PL) fractions of lake trout eggs. At each ...


Are Characiform Fishes Gondwanan In Origin? Insights From A Time-Scaled Molecular Phylogeny Of The Citharinoidei (Ostariophysi: Characiformes), Jairo Arroyave, John S. S. Denton, Melanie L. J. Stiassny Oct 2013

Are Characiform Fishes Gondwanan In Origin? Insights From A Time-Scaled Molecular Phylogeny Of The Citharinoidei (Ostariophysi: Characiformes), Jairo Arroyave, John S. S. Denton, Melanie L. J. Stiassny

Publications and Research

Fishes of the order Characiformes are a diverse and economically important teleost clade whose extant members are found exclusively in African and Neotropical freshwaters. Although their transatlantic distribution has been primarily attributed to the Early Cretaceous fragmentation of western Gondwana, vicariance has not been tested with temporal information beyond that contained in their fragmentary fossil record and a recent time-scaled phylogeny focused on the African family Alestidae. Because members of the suborder Citharinoidei constitute the sister lineage to the entire remaining Afro-Neotropical characiform radiation, we inferred a time-calibrated molecular phylogeny of citharinoids using a popular Bayesian approach to molecular dating ...


The Genetic Architecture Of Juvenile Migration In Rainbow Trout (Oncorhynchus Mykiss), Benjamin Charles Hecht Oct 2013

The Genetic Architecture Of Juvenile Migration In Rainbow Trout (Oncorhynchus Mykiss), Benjamin Charles Hecht

Open Access Dissertations

Animal migrations play a critical role in the health and balance of ecological systems and in the evolution and diversification of species, and this is perhaps best displayed amongst salmonid fishes (salmon, trout, and char) who exhibit variation in the propensity to migrate both within and among species. Rainbow and steelhead trout (Oncorhynchus mykiss), members of the salmonid family of fishes, capture this variation throughout their native range. Some populations and ecotypes will remain resident in freshwater habitats throughout their life history; while others have the ability to embark on tremendous marine migrations. Those that migrate undergo a suite of ...


Gene Expression Life History Markers In A Hatchery And A Wild Population Of Young-Of-The-Year Oncorhynchus Mykiss, Ian D. F. Garrett Sep 2013

Gene Expression Life History Markers In A Hatchery And A Wild Population Of Young-Of-The-Year Oncorhynchus Mykiss, Ian D. F. Garrett

Dissertations and Theses

Life history within a single species can vary significantly. Many of these differences are associated with varying environmental conditions. Understanding what environmental conditions cue alternate life histories within a single species has been researched extensively. In salmonid fishes, more than almost any other group, varying environmental conditions give rise to individuals within species that take markedly different life history trajectories.

Oncorhynchus mykissis a species of salmonid native to the Pacific Northwest region of North America. This species has two life history forms, anadromous and resident. The anadromous form spends a portion of its life in ocean while the resident life ...


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 ...


Fisheries And Marine Life Interaction Monitoring Bi-Annual Report, Haley Viehman, Garrett Staines, Gayle Zydlewski Sep 2013

Fisheries And Marine Life Interaction Monitoring Bi-Annual Report, Haley Viehman, Garrett Staines, Gayle Zydlewski

Maine Sea Grant Publications

Ocean Renewable Power Company, LLC (ORPC) deployed a TidGen® Power System in outer Cobscook Bay, Maine, as the first stage of the Cobscook Bay Tidal Energy Project (CBTEP) (Figure 1). This installation requires monitoring to assess potential effects of the TidGen® Power System on the marine environment. ORPC’s marine life monitoring plan has two parts: 1) Fisheries Monitoring and 2) Marine Life Interaction Monitoring.


Establishing Field-Based Evidence For The Effects Of Hypoxia On The Reproductive Capacity Of Chesapeake Bay Fishes., Troy D. Tuckey, Mary C. Fabrizio Aug 2013

Establishing Field-Based Evidence For The Effects Of Hypoxia On The Reproductive Capacity Of Chesapeake Bay Fishes., Troy D. Tuckey, Mary C. Fabrizio

Reports

No abstract provided.


Ccaat/Enhancer-Binding Protein Delta (C/Ebp-Delta) Expression In Antarctic Fishes: Implications For Cell Cycle And Apoptosis, Isaac Martin Sleadd Aug 2013

Ccaat/Enhancer-Binding Protein Delta (C/Ebp-Delta) Expression In Antarctic Fishes: Implications For Cell Cycle And Apoptosis, Isaac Martin Sleadd

Dissertations and Theses

Chapter 1: Antarctic fishes are extremely cold adapted. Despite their inability to upregulate heat shock proteins, recent studies have demonstrated a capacity for heat response in these animals. A cDNA microarray study looked at the Notothenioid fish Trematomus bernacchii and revealed heat sensitivities for hundreds of genes, two of which code for members of the CCAAT/Enhancer-binding protein (C/EBP) family of transcription factors. These molecular switches are best known for their roles in apoptosis, inflammation and cell cycle arrest. This dissertation further elucidates the role of C/EBP-delta in the Antarctic fishes T. bernacchii and Pagothenia borchgrevinki.

Chapter 2 ...


Collaborative Research: Globec Pan-Regional Synthesis: End-To-End Energy Budgets In Us-Globec Regions, Andrew C. Thomas Aug 2013

Collaborative Research: Globec Pan-Regional Synthesis: End-To-End Energy Budgets In Us-Globec Regions, Andrew C. Thomas

University of Maine Office of Research Administration: Grant Reports

The research addresses the overarching question: are marine food webs leading to fisheries controlled from the top-down, the bottom up, or a combination of the two? To address this question we will (1) compare end-to-end energy budgets of the 4 US-GLOBEC study regions in the context of top-down v. bottom-up forcing, (2) assess the skills of the regional models in capturing basic material fluxes, (3) extract diagnostics from the regional models that will be used to evaluate the effects of climate change and fishing pressure across GLOBEC regions and (4) develop quantitative methods to compare the diagnostics. The major successes ...


Status Of The Habitat Evaluation Procedures, Mel Schamberger, William B. Krohn Aug 2013

Status Of The Habitat Evaluation Procedures, Mel Schamberger, William B. Krohn

William B. Krohn

The 1970s was a decade of increased awareness of environmental problems, and emphasis was placed on the development of procedures for predicting impacts of proposed developmental activities on natural systems. Impact assessment has evolved from a focus on species numbers, human use, species richness, and related methods to include the investigation of habitat as a supplemental or alternative approach to environmental planning, mitigation, species management, and impact assessment (Schamberger 1979, U.S. Fish and Wildlife Service 1980a, 1980b). The impetus for habitat-based assessment techniques came primarily from two sources: (1) environmental legislation requiring noneconomic project evaluations; and (2) an awareness ...


Leatherback Hatchling Fitness, Violet Campbell, Shane Morales, Kelly Stewart Aug 2013

Leatherback Hatchling Fitness, Violet Campbell, Shane Morales, Kelly Stewart

STAR (STEM Teacher and Researcher) Presentations

Leatherback hatchling fitness on land is essential for their success in entering the ocean without being predated. Two ways fitness on land may be measured are by how fast hatchlings crawl as well as how fast their righting responses are when they are flipped onto their carapaces. Hatchlings from certain nests have slower righting response times along with slower crawl times, both of which would increase the odds of predation and hinder the success of hatchlings reaching the ocean.

Hatchling crawling speed was determined by timing 12 randomly selected hatchlings from each nest to crawl a distance of two meters ...


Temporal Variation In Larval Release In Botrylloides Violaceous, Damion J. Delton, Sarah Cohen Aug 2013

Temporal Variation In Larval Release In Botrylloides Violaceous, Damion J. Delton, Sarah Cohen

STAR (STEM Teacher and Researcher) Presentations

Despite Botrylloides violaceous being a globally invasive species in temperate marine habitats, little is known about it’s natural dispersal behavior. Previous work (Delton et al, 2011) suggests behavioral inferences based on a related and much more commonly studied species may not be appropriate, potentially due to a large size difference between the non-feeding larvae of these two species. Here, we consider factors that may affect dispersal potential. To study how light affects larval release, we measured timing of larval release in the field and compared larval size and time of release. Colonies were collected from floating docks in Richmond ...


Shovelnose Sturgeon Reproductive Ecology In The Lower Platte River, Nebraska, Mathew L. Rugg Aug 2013

Shovelnose Sturgeon Reproductive Ecology In The Lower Platte River, Nebraska, Mathew L. Rugg

Dissertations & Theses in Natural Resources

Biodiversity and abundance of freshwater organisms are experiencing drastic declines. Anthropogenic disturbances have altered the natural flow regimes of large rivers, and have led to declines in species that rely on elements of natural flow. Similarly, shovelnose sturgeon distribution has diminished in the last 100 years due to habitat alteration, overharvest, and water contamination. To fully understand the status and viability of a fish population, basic knowledge of a fish’s reproductive strategy is needed. Aspects of reproduction that should be understood to manage for sustainability include maturation, fecundity, and spawning dynamics. There is currently little published information on age ...


The Effects Of Calcium Concentration And Food Levels On Daphnia, Fawn Goodberry Aug 2013

The Effects Of Calcium Concentration And Food Levels On Daphnia, Fawn Goodberry

Biology Theses

Many physiological processes of Daphnia are negatively affected at low calcium concentrations. The concentration of calcium within lake water influences how Daphnia populations will survive and reproduce in natural environments. An experiment was designed to test the effects of calcium concentration and food level on the growth and reproduction of a Daphnia hybrid. Daphnia pulex x Daphnia pulicaria were reared in a soft water medium at three calcium concentrations (2.5mg/L, 1.0mg/L, 0.50mg/L) and high and low food levels (5.6 x 105 and 5.6 x 104 cells of the algae Ankistrodesmus ...


Exploitation Of Channel Catfish In Nebraska Flood-Control Reservoirs, Christopher Lee Wiley Jul 2013

Exploitation Of Channel Catfish In Nebraska Flood-Control Reservoirs, Christopher Lee Wiley

Dissertations & Theses in Natural Resources

Channel catfish Ictalurus punctatus, is a popular sportfish in North America, and is the third most-sought fish species in Nebraska. Exploitation rates of channel catfish populations have been estimated to be substantial in states neighboring Nebraska. Despite the popularity of channel catfish, little is known about the exploitation of channel catfish populations in Nebraska. The objectives of this study were to estimate the exploitation rates of channel catfish populations, identify the length bias of angling for channel catfish, and identify the self-imposed length limits for channel catfish at flood-control reservoirs of Nebraska. The software package Program Mark was used to ...


Final Report An Inventory Of The Sea Scallop Resource In The Georges Bank Closed Area Ii And Surrounds, David B. Rudders, William D. Dupaul, Jessica Bergeron Jul 2013

Final Report An Inventory Of The Sea Scallop Resource In The Georges Bank Closed Area Ii And Surrounds, David B. Rudders, William D. Dupaul, Jessica Bergeron

Reports

No abstract provided.


Final Report An Assessment Of Sea Scallop Abundance And Distribution In A Selected Closed Area: Nantucket Lightship Closed Area, David B. Rudders, William D. Dupaul, Jessica Bergeron Jul 2013

Final Report An Assessment Of Sea Scallop Abundance And Distribution In A Selected Closed Area: Nantucket Lightship Closed Area, David B. Rudders, William D. Dupaul, Jessica Bergeron

Reports

No abstract provided.


Final Report An Assessment Of Sea Scallop Abundance And Distribution In Selected Areas: The Hudson Canyon And Delmarva Closed Area And Inshore Areas Of The New York Bight, David B. Rudders, William D. Dupaul, Jessica Bergeron Jul 2013

Final Report An Assessment Of Sea Scallop Abundance And Distribution In Selected Areas: The Hudson Canyon And Delmarva Closed Area And Inshore Areas Of The New York Bight, David B. Rudders, William D. Dupaul, Jessica Bergeron

Reports

No abstract provided.


Examining Gradients In Novelty: Native And Non-Native Fish Assemblages In Everglades Canals, David A. Gandy Jul 2013

Examining Gradients In Novelty: Native And Non-Native Fish Assemblages In Everglades Canals, David A. Gandy

FIU Electronic Theses and Dissertations

Novel ecosystems emerge from alterations to historic abiotic regimes and contain new species combinations. Everglades canals offer an opportunity to understand the function of novel habitat for native and non-native fishes and how novel conditions in turn influence distribution, abundance and assembly patterns. I examined native and non-native fish assemblages collected across a gradient in novelty, defined by the loss of wetland connectivity and habitat complexity. As novelty increased, native species richness and abundance strongly declined, and the contribution of non-natives increased. Community structure vastly differed among canals and was strongly influenced by spatial factors and secondarily by hydrological factors ...