Aquaculture and Fisheries Commons^™

Quality Of United States And Bangladesh Shrimp Due To Growth And Post-Harvest Practices, Murshida Khan

LSU Doctoral Dissertations

Shrimp is one of the most consumed and traded seafood, and due to its high demand, consumers depend on both wild caught and farmed products. Post-harvest practices can greatly affect health, safety, and quality, and the goal of this project was to study the effects of chemicals, bacteria, and antibiotics on shrimp from Louisiana and Bangladesh. Quality changes (proximate composition, color, texture and total plate count of bacteria) in shrimp from Louisiana (Farfantepenaeus aztecus and Litopenaeus setiferus) and Bangladesh (Penaeus monodon and Macrobrachium rosenbergii) were determined due to the application of melanosis preventing compounds (sulfite powder, …

Short-Term Low Salinity Mitigates Effects Of Oil And Dispersant On Juvenile Eastern Oysters: A Laboratory Experiment With Implications For Oil Spill Response Activities, Meagan N. Schrandt, Sean Powers, F.Scott Rikard, Wilawan Thongda, Eric Peatman

University Faculty and Staff Publications

Following the Deepwater Horizon oil spill, eastern oyster (Crassostrea virginica) reefs in the northern Gulf of Mexico were exposed to oil and various associated clean-up activities that may have compromised oyster reef health. Included in the exposure was oil, dispersant, and in some locales, atypical salinity regimes. Oil and dispersants can be detrimental to oysters and the effects of salinity depend on the level. In addition to these extrinsic factors, genetic diversity of oyster populations may help the oysters respond to stressors, as demonstrated in other systems. We used a 3×3×2 factorial design to experimentally examine the effects …

Marine Aquarium Fish Resource Of Western Australia Harvest Strategy 2018-2022, Western Australia. Dept. Of Fisheries

Fisheries Management Papers

Harvest strategies for aquatic resources managed by the Department of Primary Industries and Regional Development (the Department) are formal documents that are prepared based on a formal policy (Department of Fisheries 2015) to support the decision-making processes and ensure consistency with the principles of Ecologically Sustainable Development (ESD; Fletcher 2002) and Ecosystem Based Fisheries Management (EBFM; Fletcher et al. 2010). The objectives of ESD are reflected in the objects of the Fish Resources Management Act 1994(FRMA), Section 3, and the Aquatic Resources Management Act 2016 (ARMA), Clause 9, which will replace the FRMA once enacted.

Marine Aquarium Fish Resource Of Western Australia Harvest Strategy 2018-2022, Department Of Primary Industries And Regional Development

Fisheries Management Papers

The Department of Primary Industries and Regional Development Fisheries Division (Fisheries) utilises an Ecosystem-Based Fisheries Management (EBFM) approach which considers all relevant ecological, social, economic and governance issues to deliver community outcomes. In order to assess the level of fisheries’ impacts and prioritise management activities across these four areas, periodic Ecological Risk Assessments (ERA) are undertaken for fisheries resources in Western Australia (WA).

Draft Management Plan For The Southern Demersal Gillnet And Demersal Longline Managed Fishery, Department Of Fisheries

Fisheries Management Papers

No abstract provided.

Ecosystem-Based Fisheries Management (Ebfm) Risk Assessment Of The Marine Aquarium Fish Managed Fishery 2014, Department Of Fisheries

Fisheries Management Papers

No abstract provided.

Marine Aquarium Fish Resource Of Western Australia Harvest Strategy : 2018 – 2022 : Version 1.0, Department Of Fisheries

Fisheries Management Papers

No abstract provided.

Adult Walleye Abundance And Subsequent Fry Production In The Tamarac River, Mn, Phillip Oswald

Biology Graduate Theses

Walleye reproductive success is of critical interest for the Red Lakes as this system is maintained entirely by natural reproduction and supports robust commercial and recreational fisheries. The Tamarac River, a major tributary to the Red Lakes, hosts a substantial Walleye spawning migration annually. The river drains the largest peat bog in the lower 48 states and thus experiences low dissolved oxygen at times. It is largely unknown how the potential anoxic bog water affects Walleye reproductive success each year and subsequent year class strength. Fyke nets were set from 2014-2018 to assess the relative abundance of adult Walleye spawning …

The Microbiome Of The Gastrointestinal Tract Of A Range-Shifting Marine Herbivorous Fish, Jacquelyn Jones, Joseph D. Dibattista, Michael Stat, Michael Bunce, Mary C. Boyce, David Fairclough, Michael J. Travers, Megan J. Huggett

Fisheries Research Articles

Globally, marine species’ distributions are being modified due to rising ocean temperatures. Increasing evidence suggests a circum-global pattern of poleward extensions in the distributions of many tropical herbivorous species, including the ecologically important rabbitfish Siganus fuscescens. Adaptability of a species to such new environments may be heavily influenced by the composition of their gastrointestinal microbe fauna, which is fundamentally important to animal health. Siganus fuscescens thus provides an opportunity to assess the stability of gastrointestinal microbes under varying environmental conditions. The gastrointestinal microbial communities of S. fuscescens were characterized over 2,000 km of Australia’s western coast, from tropical to …

Cellular Mechanisms Of Slime Gland Refilling In Pacific Hagfish (Eptatretus Stoutii), Sarah Schorno, Todd E. Gillis, Douglas S. Fudge

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Hagfishes use their defensive slime to ward off gill-breathing predators. Slime gland refilling is a surprisingly slow process, and previous research has shown that the composition of the slime exudate changes significantly during refilling, which likely has consequences for the functionality of the slime. This study set out to expand our understanding of slime gland refilling by examining the cellular processes involved in refilling of the glands, as well as determining where in the gland the main slime cells – the gland thread cells and gland mucous cells – arise. Slime glands were electro-stimulated to exhaust their slime stores, left …

Using Local Fishery Monitoring To Understand Small-Scale Coastal Fisheries In Tanzania, Matthew Robertson

LSU Master's Theses

Nearshore marine fisheries provide the main source of protein for nearly 9 million people in the coastal villages of Tanzania, yet for decades the fisheries have shown signs of overexploitation. These fisheries are small-scale and co-managed by local coastal communities in groups known as Beach Management Units (BMUs). BMUs monitor individual fishing trip data (e.g. gear, vessel, taxa); however, these data have only been analyzed in nationally aggregated statistics and to our knowledge, are not presently used in management decision making. The present thesis aimed to identify the forms of data and information that local fishery monitoring can record about …

Decision Tree And Rapid Appraisal Methodology For New Fisheries, Anthony M. Hart

Fisheries Research Reports

The objective of this report is to provide a process (RAM – Rapid Appraisal Methodology) for assessing proposals for new fisheries. If adopted, the methodology could extend to a potential new initiative, referred to as WildCulture in this report. The RAM process is designed to be a modern, forward thinking, opportunity creating instrument for enhancing seafood production from renewable aquatic resources.

Growth Of Pelagic Age-0 Yellow Perch In Relation To Hatch Dates And Water Temperature In North-Central Minnesota Lakes, Ethan Karppinen

Biology Graduate Theses

Exposure to consistent water warming rates and access to abundant populations of edible sized zooplankton affects growth and increases the probability of survival for newly hatched Yellow Perch Perca flavescens. Seven lakes with varying physical characteristics were selected in north-central Minnesota to study abiotic (water temperature) and biotic (zooplankton community and fish growth) progressions during the spring and early summer (April-June). Mean water temperatures from ice-out to 28 June (11.98-14.62 °C) had significant relationships with mean depth (P < 0.01, R? = 0.85), max depth (P < 0.01, R? = 0.73), and total volume (P < 0.01, R2 = 0.54). Hatch periods ranged from 13 to 19 days in 2015 and 13 to 25 days in 2016. Cumulative degree-days (CDD) were used to predict Yellow Perch hatch periods and explain growth. CDD predicted 21-81% of hatch periods in 2015 and 11-50% in 2016. Mean predicted total lengths at 28 June were 19.65-30.41 mm in 2015 and 20.88-28.54 mm in 2016. There was a significant relationship between CDD and predicted total length (R? = 0.62, P < 0.01) to explain differences in Yellow Perch total length while inhabiting the pelagic zone. Observed gape measurements were highly correlated with predicted gapes from the Schael formula (R? = 0.89, P < 0.01) that was used to assess the availability of edible sized zooplankton for age-0 Yellow Perch in each lake. No predator-prey mismatches were found and earlier hatch dates produced age-0 Yellow Perch with greater predicted total lengths in late June on the majority of lakes. This suggests that earlier hatched Yellow perch have an advantage over later hatched Yellow Perch in attaining greater lengths by late June. Our study provides information on a variety of physical and biological progressions in lakes, which may be used for fisheries management practices in the future.

Using Systematic Conservation Planning To Establish Management Priorities For Freshwater Salmon Conservation, Matanuska-Susitna Basin, Ak, Usa, Andrew W. Witt, Edd Hammill

Ecology Center Publications

1- The Alaskan Matanuska-Susitna Basin (MSB) provides habitat for all five Pacific salmon species, and their large seasonal spawning runs are important both ecologically and economically. However, the encroachment of human development through urbanization and extractive industries poses a serious risk to salmon habitat in the MSB.

2- Using systematic conservation planning techniques, different methods of incorporating anthropogenic risks were assessed to determine how to cost-effectively conserve salmon habitat in the area.

3- The consequences of four distinct conservation scenarios were quantified: no consideration of either urbanization or extractive industries (‘Risk ignored’ scenario); accounting for the risk of urbanization, and …

Towards Sustainable Aquafeeds: Evaluating Substitution Of Fishmeal With Lipid-Extracted Microalgal Co-Product (Nannochloropsis Oculata) In Diets Of Juvenile Nile Tilapia (Oreochromis Niloticus), Pallab K. Sarker, Anne R. Kapuscinski, Ashley Y. Bae, Emily Donaldson, Devin S. Fitzgerald, Oliver F. Edelson

Dartmouth Scholarship

Microalgae companies increasingly seek markets for defatted biomass that is left over after extracting omega-3 rich oil for human nutraceuticals and crude oil for fuels. Such a protein-rich co-product is a promising alternative to unsustainably sourced fishmeal in aquaculture diets. We report the first evaluation of co-product of the marine microalga Nannochloropsis oculata(N. oculata co-product) for replacing fishmeal in diets of Nile tilapia, a globally important aquaculture species. We conducted a nutrient digestibility experiment with N. oculata dried whole cells and N. oculata co-product, followed by an 84-day nutritional feeding experiment with N. oculata co-product. N. oculata co-product, more nutrient-dense …

Modeling And Mapping Addiction In The Zebrafish, Danio Rerio, Bradley Serpa

Master of Science in Integrative Biology Theses

Driven by the communication of dopamine, the vertebrate reward system has been evolutionarily conserved to maintain survival and optimize fitness. The neural circuits governing this system integrate sensory stimuli to produce appropriate, self-preserving responses that underlie experience-based learning. In the most primitive vertebrates, dopamine release in neuronal circuits drives homeostatic behaviors, such as seeking nutrients, finding a mate, or avoiding danger. From agnathans to mammals, dopaminergic synthesis and signaling genes and molecules, along with neuronal pathways and reward system-based behaviors, remain highly conserved. Dopamine signaling proteins include two classes of metabotropic G-Protein Receptor Coupled Dopamine Receptors, D1-like (DRD1) and D2-like …

Combined Use Of Edna Metabarcoding And Video Surveillance For The Assessment Of Fish Biodiversity, Michael Stat, Jeffrey John, Joseph D. Dibattista, Stephen J. Newman, Michael Bunce, Euan S. Harvey

Fisheries Research Articles

Monitoring communities of fish is important for the management and sustainability of fisheries and marine ecosystems. Baited remote underwater video systems (BRUVs) are among the most effective nondestructive techniques for sampling bony fishes and elasmobranchs (sharks, rays, and skates). However, BRUVs sample visually conspicuous biota; hence, some taxa are undersampled or not recorded at all. We compared the diversity of fishes characterized using BRUVs with diversity detected via environmental DNA (eDNA) metabarcoding. We sampled seawater and captured BRUVs imagery at 48 locales that included reef and seagrass beds inside and outside a marine reserve (Jurien Bay in Western Australia). Eighty-two …

Conservation Of Freshwater Live-Bearing Fishes: Development Of Germplasm Repositories For Goodeids, Yue Liu

LSU Doctoral Dissertations

Fishes of the family Goodeidae are considered to be among the most imperiled taxa in the world. The goal of this project was to provide a foundation for development of sperm repositories for goodeids and to use them as a model to assist conservation programs for imperiled freshwater live-bearing fishes. Development of such repositories is challenging because of unusual reproductive characteristics of live-bearing fishes, such as sperm bundles, internal fertilization, and the bearing of live young. Standardized methods were established to evaluate quality-related attributes of sperm bundles. The different features between activation of free and bundled sperm were investigated and …

Age-Specific Estimates Indicate Potential Deleterious Capture Effects And Low Survival Of Stocked Juvenile Colorado Pikeminnow (Ptychocheilus Lucius), Scott R. Clark, Mary M. Conner, Scott L. Durst, Nathan R. Franssen

Wildland Resources Faculty Publications

Hatcheries and stocking programs have become necessary to repatriate or augment populations of imperiled fishes worldwide. Over nearly two decades, millions of endangered juvenile Colorado Pikeminnow Ptychocheilus lucius have been stocked into the San Juan River (Colorado, New Mexico, and Utah); however, recruitment of these individuals to adult life stages (age ≥6) remains low. Using a mark–recapture data set collected from annual riverwide electrofishing efforts between 2003 and 2016, we investigated apparent survival and capture probabilities of stocked Colorado Pikeminnow to identify age‐specific bottlenecks contributing to this lack of recruitment. With relatively high capture rates, which averaged between 0.34 and …

Australian Herring And West Australian Salmon Scientific Workshop Report, October 2017, Brent S. Wise, Brett Molony

Fisheries Research Reports

A scientific workshop was held on 25th – 29th September 2017 to review available data for Australian herring (Arripis georgianus) and determine current stock status using the Department of Primary Industries and Regional Development’s (DPIRD) Risk-based Weight of Evidence Approach (Appendix 1). Recommendations for future monitoring and assessments required to reduce uncertainties and establish sustainable catch levels were also made.

Fisheries Bycatch Risk To Marine Megafauna Is Intensified In Lagrangian Coherent Structures, Kylie L. Scales, Elliot L. Hazen, Michael G. Jacox, Frederic Castruccio, Sara M. Maxwell, Rebecca L. Lewison, Steven J. Bograd

Biological Sciences Faculty Publications

Incidental catch of nontarget species (bycatch) is a major barrier to ecological and economic sustainability in marine capture fisheries. Key to mitigating bycatch is an understanding of the habitat requirements of target and nontarget species and the influence of heterogeneity and variability in the dynamic marine environment. While patterns of overlap among marine capture fisheries and habitats of a taxonomically diverse range of marine vertebrates have been reported, a mechanistic understanding of the real-time physical drivers of bycatch events is lacking. Moving from describing patterns toward understanding processes, we apply a Lagrangian analysis to a high-resolution ocean model output to …

The Importance Of Keeping The Big Ones: Harvest Slot Limits And Marine Protected Areas For The Management Of The Caribbean Spiny Lobster, Gayathiri Gnanalingam

Biological Sciences Theses & Dissertations

Fishing typically removes the oldest and/or largest individuals from populations undermining stability and reproductive success. Traditional fisheries management tools fail to protect these oldest and/or largest individuals, but two less conventional tools: marine protected areas (MPAs), and harvest slot limits have the potential to do so. Here I tested the possible use of these tools for the Caribbean spiny lobster, Panulirus argus, an iconic and economically valued species. After decades of intense fishing, the largest lobsters have largely been wiped out. The loss of the largest lobsters is significant as large lobsters have considerably greater reproductive potential than their …

Can Lactate Dehydrogenase Be Used To Index Anaerobic Activity In Fishes?, Casey W. Schoenebeck, Erik Prenosil, Brianna Pallas, Aspen Abrams, Kimberly Carlson

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Anaerobic activities such as those associated with spawning, foraging for prey, and predator avoidance are difficult to quantify in wild fish. This study experimentally evaluated if the muscle enzyme lactate dehydrogenase (LDH) can be used to index recent anaerobic activity in fish by testing the hypothesis that muscle LDH activity will be greater in exercised fish than in rested fish. We used burst swimming motions in a swim tunnel to elicit anaerobic metabolism in a 5 day anaerobic exercise treatment (n = 30) and a rested control group (n = 30). On average the exercised fish produced significantly more LDH …

Species Substitution And Country Of Origin Mislabeling Of Catfish Products On The U.S. Commercial Market, Shayna A. Bosko, Denise M. Foley, Rosalee S. Hellberg

Food Science Faculty Articles and Research

Catfish belong to the order Siluriformes and include both the Ictaluridae and Pangasiidae families. However, U.S. labeling laws require only species of the family Ictaluridae to be marketed as catfish. The lower production price of Pangasiidae, combined with changes in regulations over time, have resulted in high potential for species substitution and country of origin mislabeling among catfish products. The objective of this study was to conduct a market survey of catfish products sold at the U.S. retail level to examine species mislabeling and compliance with Country of Origin Labeling (COOL) regulations. A total of 80 catfish samples were collected …

Development Of A Flow-Driven, Self-Rotating Tank Deposit Remover For Grouper Nurseries, Chyng-Hwa Liou, Chung-Lee Lee, Jyh-Nain Pai, Yuan-Nan Chu

Journal of Marine Science and Technology–Taiwan

Tank hygiene is an essential aspect for successful fingerling production but can involve substantial workload to maintain. The purpose of this research is to develop and test a new version of a flow-driven, self-rotating tank deposit remover to automatically and quickly remove the deposit for grouper nurseries. The deposit remover has a suction tube lying on the bottom of the tank. Water flowing through the suction tube drives a propeller to rotate the tube while sucking up the solids on the bottom. Previous versions of the deposit remover suffer from incomplete solid removal and a long operating time. An integrated …

Seasonal Variations In Trophic Links Between Microzooplankton And Nanoflagellates In A Coastal Ecosystem, An Yi Tsai

Journal of Marine Science and Technology–Taiwan

Using incubation experiments with size-fractionated coastal waters, this study calculated the growth and loss rates of nanoflagellates in a coastal ecosystem of the subtropical western Pacific along a rocky shore in northeastern Taiwan. Samples were taken monthly from September 2014 to August 2015. Seasonal variations in growth rates of heterotrophic nanoflagellates (HNF) and pigmented nanoflagellates (PNF) ranged from 0.17 to 1.13 d-1 and 0.05 to 1.21 d-1, respectively. This study found that grazing had a significant impact on nanoflagellate community (PNF: 0.14 to 0.39 d-1; HNF: 0.12 to 0.52 d-1), accounting for about 15-30% for PNF and 18-60% for HNF …

Identification Of Preponderant Marine Bacteria And Their Biofouling Characteristics On Adsorbents Of Different Sizes And Shapes In Seawater, Seulki Jeong, Joo-Ae Kim, Hyunji Kim, Kang-Sup Chung, Hye-On Yoon

Journal of Marine Science and Technology–Taiwan

We aimed to investigate biofouling characteristics on the surfaces of adsorbents and reservoirs used for lithium recovery from seawater. Three types of adsorbents (type 1, 2 m sphere-shaped; type 2, 2 mm circular; and type 3, 2 mm rod-shaped) and a reservoir (polyurethane sponge) were immersed in seawater for 30 days. Biofouling on the surface of adsorbents and the reservoir was initiated by Vibrio, Alteromonas, and Pseudoalteromonas, suggesting that primary colonization of Gammaproteobacteria was an important feature of the biofouling on the surface. We observed pore size-dependent bacterial composition on the adsorbents; only Alteromonas was found on type 1 adsorbent, …

Winter Abundance And Species Composition Of Anchovy Larvae Associated With Hydrological Conditions In The Coastal Waters Of Tanshui, Taiwan, Yi-Chen Wang, Wen-Yu Chen, Yu-Kai Chen, Yi-Chun Kuo, Ming-An Lee

Journal of Marine Science and Technology–Taiwan

The present study investigated changes in the winter abundance and composition of anchovy larvae associated with hydrological conditions in the coastal waters of Tanshui, Taiwan. A survey during the period of 2008-2014 revealed that the abundance of larvae caught using fyke nets varied from 123.9 to 28,314 ind/1000 m3 , whereas the surface water temperature and salinity ranged from approximately 17C to 18C and 32.84 psu to 33.72 psu, respectively. Engraulis japonicus (Japanese anchovy), Encrasicholina punctifer (buccaneer anchovy), and E. heteroloba (shorthead anchovy) were the dominant species of anchovy larvae, accounting for 0.17%-93.56%. In the La Niña years 2008 and …

Management Strategies To Minimize The Dredging Impacts Of Coastal Development On Fish And Fisheries, Amelia S. Wenger, Christopher A. Rawson, Shaun K. Wilson, Stephen J. Newman, Michael J. Travers, Scott Atkinson, Nicola Browne, Douglas Clarke, Martial Depczynski, Paul L A Erftemeijer, Richard D. Evans, Jean-Paul A. Hobbs, Jennifer L. Mcilwain, Dianne Mclean, Benjamin J. Saunders, Euan S. Harvey

Fisheries Research Articles

Accelerating coastal development and shipping activities dictate that dredging operations will intensify, increasing potential impacts to fishes. Coastal fishes have high economic, ecological, and conservation significance and there is a need for evidence-based, quantitative guidelines on how to mitigate the impacts of dredging activities. We assess the potential risk from dredging to coastal fish and fisheries on a global scale. We then develop quantitative guidelines for two management strategies: threshold reference values and seasonal restrictions. Globally, threatened species and nearshore fisheries occur within close proximity to ports. We find that maintaining suspended sediment concentrations below 44 mg/L (15–121 bootstrapped CI) …

Risk Assessment Of The Potential Impacts Of Seismic Air Gun Surveys On Marine Finfish And Invertebrates In Western Australia, F J. Webster, Brent S. Wise, H Kemps, Warrick Fletcher

Fisheries Research Reports

Seismic surveys have the potential to affect marine life, including commercially and recreationally important finfish and invertebrate species and their prey. There is, however, considerable uncertainty around the degree of impact and relevant pressure-response pathways across the different taxonomic groups.