Changes In Water Quality And Microbiota Over Two Years In Florida Hard Clam (Mercenaria Mercenaria) Hatcheries,
2026
Florida Atlantic University
Changes In Water Quality And Microbiota Over Two Years In Florida Hard Clam (Mercenaria Mercenaria) Hatcheries, Bonnie Getter
Electronic Theses and Dissertations 2020 - Present
This thesis characterized the water quality and bacterial communities in nine hard clam hatcheries over two production years through weekly or biweekly water quality and chemistry monitoring, monthly bacterial plating in the second year of production, and select 16S microbiome sampling at select hatcheries to address production bottlenecks and support the reliable production of high-quality seed for Florida’s growing hard clam aquaculture industry. Logistic regression models showed that water source was distinguished by pH, salinity, alkalinity, and nitrite, whereas geographic location was distinguished by temperature, salinity, nitrate, and calcium; temperature, dissolved oxygen, salinity, and alkalinity distinguished seasons. Vibrio bacteria differed …
A Comparison Of Survival, Growth, And Stress Resilience In Three Different Lineages Of The Pacific Oyster (Crassostrea Gigas) Farmed On The California Central Coast,
2026
California Polytechnic State University, San Luis Obispo
A Comparison Of Survival, Growth, And Stress Resilience In Three Different Lineages Of The Pacific Oyster (Crassostrea Gigas) Farmed On The California Central Coast, Victoria F. Hanshaw
Master's Theses
Aquaculture of Pacific oysters on the US West Coast is routinely impacted by seasonal unexplained mortality events. To better understand these large-scale mortality events in oyster aquaculture, shellfish growers and scientists in California have partnered together to conduct comparative, multi-estuary farm trials of discrete Pacific oyster (Crassostrea gigas) lineages. In this thesis we investigate how the more recently imported Midori lineage performs compared to the historically used Miyagi lineage, as well as a Hybrid (Midori x Miyagi) lineage. As part of a 7-month long field study from April-November of 2024 in Morro Bay and Tomales Bay, California, we evaluated …
Blue Crab Reproductive Output And Phenology In A Changing Climate,
2026
University of Southern Mississippi
Blue Crab Reproductive Output And Phenology In A Changing Climate, Blaise Rohan
Master's Theses
Globally, ecosystems are experiencing rising temperatures due to climate change, with potential consequences for reproductive investment and timing in many species. Blue crabs, Callinectes sapidus, support valuable commercial fisheries throughout the U.S. Atlantic and Gulf coasts, and understanding variation in reproductive output has important management and conservation implications. This study examined two components of blue crab reproduction: (1) reproductive investment across populations spanning multiple latitudes (New York, New Jersey, North Carolina, Mississippi, and Texas), using a space-for-time substitution to assess the effects of varying thermal regimes on fecundity and egg quality, and (2) spawning phenology in North Carolina from …
Why Technical Readiness Is Not Enough: Institutional Barriers To Full Harvest Strategy Adoption In The International Pacific Halibut Commission,
2026
McGill University
Why Technical Readiness Is Not Enough: Institutional Barriers To Full Harvest Strategy Adoption In The International Pacific Halibut Commission, Evelyn Roozee, Owen Temby, Gordon M. Hickey
School of Earth, Environmental, & Marine Sciences Faculty Publications
Harvest strategies are increasingly promoted as a mechanism to reduce political discretion and align fisheries management with pre-agreed scientific objectives. While substantial progress has been made in tuna regional fisheries management organizations (RFMOs), non-tuna RFMOs have lagged behind. Existing research has focused primarily on technical modeling challenges, with comparatively limited attention to the governance dynamics shaping adoption. Using the International Pacific Halibut Commission (IPHC) as an instrumental case study, we examine the progress and delays in the development of a harvest strategy policy (HSP) through semi-structured interviews and participant observation. We find that the IPHC successfully addressed commonly cited barriers, …
Long-Term Spatiotemporal Change In Coral Reef Fish Populations And Communities In The Philippines,
2026
Old Dominion University
Long-Term Spatiotemporal Change In Coral Reef Fish Populations And Communities In The Philippines, John Christopher Whalen
Biological Sciences Theses & Dissertations
The Visayas Region of the Philippines is a global epicenter of marine fish biodiversity. Hypotheses attribute this peak of species richness within the Coral Triangle to processes that occur at geological time scales. However, changes in biodiversity may occur on ecological time scales, allowing for the assessment of the potential impact of anthropogenic activities. Recent declines in genetic, species, and ecosystem diversity have been observed in the tropics, including the Philippines. Within the Philippines the Visayas Region is considered the epicenter of species adversity due to anthropogenic stressors such as habitat degradation, overfishing, and harvesting individuals for the aquarium trade. …
Trace Element Concentrations In Tissues And Otoliths Of Fishes From Artificial Reefs In The Northern Gulf Of Mexico: The Role Of Size, Age, And Trophic Position,
2026
LSU New Orleans
Trace Element Concentrations In Tissues And Otoliths Of Fishes From Artificial Reefs In The Northern Gulf Of Mexico: The Role Of Size, Age, And Trophic Position, Blaine Savoie
LSU New Orleans Theses and Dissertations
Nearshore artificial reefs and fishes relying on them to forage and refuge can be susceptible to trace element (TE) pollutants from anthropogenic sources. Although some TE are essential, higher concentrations can cause detrimental effects and concern regarding consumption. This study assesses TE accumulation in nearshore reef fishes in the northern Gulf of Mexico, a region influenced by coastal riverine discharge, where fishing has socioeconomic importance. Five fish species from six eco-reefs were collected and analyzed for TE. An inductively coupled plasma mass spectrometer was used to analyze the TE concentrations of muscle, liver, and otoliths. TE concentrations of tissues and …
The Aggregation Of Microplastics By Enhancing Extracellular Polymeric Substance Production In Pseudoalteromonas Sp. Ncimb 2021 To Improve Removal Efficiencies In Environmental Matrices,
2026
Clemson University
The Aggregation Of Microplastics By Enhancing Extracellular Polymeric Substance Production In Pseudoalteromonas Sp. Ncimb 2021 To Improve Removal Efficiencies In Environmental Matrices, Janelle L. Mercer
All Theses
Microplastics (MP) are ubiquitous in the natural environment and are a growing threat due to their small size and durability. Plastics are released into the environment through improper waste management, wastewater treatment outfalls, industrial spills, agricultural runoff, and landfills. These particles breakdown into secondary MP through degradation pathways. MP, less than 5 mm, require intricate removal techniques from water systems. Filtration techniques, though viable and effective, have implementation constraints due to high cost, maintenance demands, and filter fouling. By integrating coagulation and flocculation processes prior to filtration, MP removal efficiencies can increase, while minimizing operational challenges during filtration. Extracellular polymeric …
Identify And Widen Bottlenecks In The Asexual Restoration Of Endangered Orbicella Faveolata Boulder Coral,
2026
Nova Southeastern University
Identify And Widen Bottlenecks In The Asexual Restoration Of Endangered Orbicella Faveolata Boulder Coral, Whitney Schwab
All HCAS Student Capstones, Theses, and Dissertations
Landscape-scale coral reef restoration is constrained by the context-dependent responses of corals to environmental and ecological conditions throughout a region, and identifying factors affecting the growth and survival of key reef-building species is essential for maximizing restoration success. In collaboration with Nova Southeastern University (NSU), the University of Miami (UM), and Mote Marine Laboratory, this study evaluated the relative effects of intrinsic factors (putative genotype and source colony location) and extrinsic factors (ex-situ nursery system characteristics, in-situ nursery location, nursery type (ex-situ vs. in-situ), and environmental conditions) on Orbicella faveolata tissue regeneration and survival following fragmentation. Corals …
Environmental Dna For Endangered Freshwater Mussel Monitoring: A Review On Global Synthesis Of Edna Methods, Challenges, And Innovative Strategies,
2026
The University of Texas Rio Grande Valley
Environmental Dna For Endangered Freshwater Mussel Monitoring: A Review On Global Synthesis Of Edna Methods, Challenges, And Innovative Strategies, Mizanur Rahman, Md. Saydur Rahman, Richard J. Kline
School of Earth, Environmental, & Marine Sciences Faculty Publications
Freshwater mussels (family Unionidae) are among the most endangered aquatic species worldwide, making effective monitoring vital for their conservation. Traditional surveys are laborious, time-consuming, and often miss rare or low-density populations. Environmental DNA (eDNA) is a highly sensitive, non-invasive approach for freshwater mussel detection and monitoring; however, uncertainties in ecological interpretation continue to limit its broader application in freshwater biodiversity monitoring. We conducted a systematic review of 49 peer-reviewed studies, identified through an extensive literature search, to assess temporal research trends, methodological advancements, ecological contexts, and regulatory readiness of freshwater mussel eDNA monitoring. Findings show that freshwater mussel eDNA research …
Using A Cell Flux Model To Investigate Phytoplankton Growth And Macromolecular Allocation Under Iron Limitation,
2026
University of Rhode Island Narragansett Bay Campus
Using A Cell Flux Model To Investigate Phytoplankton Growth And Macromolecular Allocation Under Iron Limitation, Margaret Bernish, Meng Gao, Jongsun Kim, Benoit Pasquier
School of Earth, Environmental, & Marine Sciences Faculty Publications
Global biogeochemical models are powerful tools used to interpret observations and empirical data, create hypotheses, and make predictions. Many of these models, however, represent marine microbes as static stoichiometric reactions that convert nutrients into biomass. To better constrain the biological processes that control nutrient cycling in the global ocean, we extend the Cell Flux Model of Phytoplankton to explore the impact of dissolved iron concentration on the allocation of macromolecules and elemental ratios within phytoplankton cells. This model is supported by data obtained from a range of incubation experiments conducted with phytoplankton of varying species and size categories. Model output …
Reel Into Fishing!: Providing A Recreational Fishing Education Program For Youth,
2026
Rutgers Cooperative Extension
Reel Into Fishing!: Providing A Recreational Fishing Education Program For Youth, Amelia Valente, Douglas R. Zemeckis, Lisa Morse, Gene Nigro
Journal of Extension
New Jersey is known as the Garden State, but with over 130 miles of Atlantic coastline, it also has very productive marine ecosystems that offer numerous opportunities for recreational marine fishing. The International Game Fish Association, a nonprofit organization committed to the conservation of game fish and the promotion of responsible, ethical angling practices, collaborated with Rutgers Cooperative Extension to host a youth educational program entitled Reel Into Fishing! The objective is to educate participants through hands-on engagement on ethical fishing practices and marine science to help develop the next generation of responsible anglers.
A Global Imprint Of Gadolinium-Based Contrast Agents Used In Magnetic Resonance Imaging In Drinking Water,
2026
Edith Cowan University
A Global Imprint Of Gadolinium-Based Contrast Agents Used In Magnetic Resonance Imaging In Drinking Water, Vanessa Hatje, Franciele Castro Novais, Anna Maria Orani, Maria Elisabete Machado, Pere Masque, Marc Metian
Research outputs 2022 to 2026
Since the 1980s, rare earth elements (REE), particularly gadolinium (Gd) used in gadolinium-based contrast agents (GdCA), have revolutionized Magnetic Resonance Imaging (MRI) diagnostics. However, the near-complete persistence of these compounds through wastewater treatment processes has led to widespread global environmental contamination. Here, we present a global assessment of REE concentrations and GdCA signatures in tap water from 148 cities across 89 countries and Antarctica, where anthropogenic Gd ranges from 0.1 to 61.2 ng L–1 and accounts for up to 99% of total dissolved Gd. Contamination hotspots are concentrated in Europe and North America. While Gd levels scale with MRI usage …
Exploring Immune Priming In The Species Exaiptasia Diaphana,
2026
University of Texas at Tyler
Exploring Immune Priming In The Species Exaiptasia Diaphana, Torrence Campos
Biology Theses
Vibrio coralliilyticus is a pathogen that infects various coral species across several reef ecosystems and causes mortality within a span of a few days. With increasing temperatures, the pathogen becomes more virulent towards coral. Probiotics such as MCH1-7 have previously been used to treat infected corals before and after exposure to V. coralliilyticus. In this study, we will be using a species of sea anemone Exaiptasia diaphana in place of coral to evaluate the effects of two V. coralliilyticus strains ATCC BAA-450 and OFT6-21. It was determined that BAA-450 was more virulent. It led to immediate stress and higher mortality. …
An Emergent Seafood Nationalism Takes Hold In The United States,
2026
The University of Texas Rio Grande Valley
An Emergent Seafood Nationalism Takes Hold In The United States, Owen Temby
School of Earth, Environmental, & Marine Sciences Faculty Publications
This paper introduces the concept of ‘seafood nationalism’ to describe how, since 2024–2025, the United States increasingly uses tariffs, trade remedies, food safety enforcement and origin-based rules to favour American seafood over foreign products. Federal actions include Executive Order 14276, Restoring American Seafood Competitiveness, which directs agencies to address unfair trade practices, unsafe imports and to develop a coordinated seafood trade strategy. Additional measures include a tariff package imposing a 10% duty on nearly all seafood imports and 30% on seafood from China, as well as new anti-dumping and countervailing duty orders on warm-water shrimp. This paper presents Gulf …
A Remarkable Diversity Of Syngnathid Fishes In A Highly Modified Large Coastal Embayment In The Southeastern Indian Ocean,
2026
Edith Cowan University
A Remarkable Diversity Of Syngnathid Fishes In A Highly Modified Large Coastal Embayment In The Southeastern Indian Ocean, Glenn I. Moore, Jenelle A. Ritchie, Georgia M. Nester, Glenn A. Hyndes, Alan J. Kendrick
Research outputs 2022 to 2026
Southern Australia supports a high diversity of fishes in the family Syngnathidae, which is recognised as globally threatened, facing threats from coastal development, over-exploitation and bycatch. In southwestern Australia, Cockburn Sound houses a large industrial port and naval defence assets with plans to substantially expand the port facilities but also sits within a recognised syngnathid ‘hotspot’. Using a broad array of data sources, including historical museum vouchers, published records, historical and contemporary observations from notebooks and diving surveys, historical and contemporary trawl surveys, citizen science observations and environmental DNA, we compiled 4839 records of syngnathid fishes from the embayment. Twenty-one …
Essential And Non-Essential Amino Acid Composition Of Hilsa (Tenualosa Ilisha) Fish In Different Fishing Regions Of Bangladesh,
2026
Fish Technology Research Section, Institute of Food Science and Technology (IFST), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
Essential And Non-Essential Amino Acid Composition Of Hilsa (Tenualosa Ilisha) Fish In Different Fishing Regions Of Bangladesh, Mohajira Begum, Md. Moshfekus Saleh-E-In, Md. Zia Uddin Al Mamun, Umma Fatema Shahjadee, Farha Matin Juliana, Md. Sabir Hossain
Journal of King Abdulaziz University: Marine Science
Hilsa, Tenualosa ilisha (Hamilton, 1822), is one of the favourite and popular tropical fish in the people of South-East Asia due to its delicious taste and flavour. This study investigates the comprehensive amino acid profiles of various fishing locations of Bangladesh to assess the protein quality and nutritional values. Fourteen free amino acids were identified from the six riverine locations of Bangladesh. The total free amino acid (TAA) contents were ranged from 11.60 g/100 g in Cox's Bazar to 13,40 g/100 g in Kirtonkhola for raw fish. In the case of smoked treated, the TAA ranged from 14.01 g/100 g …
Operational Risk Assessment Of Ship To Shore Petroleum Transfer Using Fuzzy Rule-Based Bayesian Networks,
2026
Department of Supply Chain Management and Maritime Business, Faculty of Maritime Studies, King Abdulaziz University, Jeddah, Saudi Arabia
Operational Risk Assessment Of Ship To Shore Petroleum Transfer Using Fuzzy Rule-Based Bayesian Networks, Ayman F. Alghanmi
Journal of King Abdulaziz University: Marine Science
Petroleum ports represent critical infrastructure in global energy supply chains, where operational risks during ship-to-shore transfer operations can lead to catastrophic consequences including environmental damage and human casualties. Despite rigorous safety protocols, these facilities remain vulnerable to operational hazards in dynamic maritime environments. This research aimed to develop and apply a hybrid Fuzzy Rule-Based Bayesian Reasoning (FRBBR) model to identify, evaluate, and prioritize operational hazards during crude oil transfer operations at petroleum port berths, with a case study conducted in Saudi Arabia, addressing the challenge of risk assessment where historical data is limited.
The research employed a mixed-methods approach combining …
Revolutionizing Coral Research: The Power Of Holo-Omics,
2026
Faculty of Marine Science, King Abdul-Aziz University, Jeddah, Saudi Arabia
Revolutionizing Coral Research: The Power Of Holo-Omics, Mohammad M. Binsarhan
Journal of King Abdulaziz University: Marine Science
This mini-review highlights the emerging field of holo-omics and its application in unraveling the complex dynamics of the coral holobiont. Corals exist as meta-organisms, closely interacting with a diverse microbiota including bacteria, archaea, microeukaryotes, viruses, and algal symbionts. Understanding these intricate relationships is critical for assessing coral health, stress responses, and resilience to environmental change. We explore the application of meta-omics approaches such as metabarcoding, metagenomics, meta-transcriptomics, metabolomics, and proteomics in profiling coral-associated microbial communities and their functions. The review sheds light on the methodological advantages and limitations of each approach, as well as some of the technical challenges involved …
Microalgae As Sustainable Biofactories For Bioplastic Production: Challenges And Future Perspectives: A Review,
2026
Environmental Research & Study Center, University of Babylon, Iraq
Microalgae As Sustainable Biofactories For Bioplastic Production: Challenges And Future Perspectives: A Review, Zahraa Hussein Obaid, Noor S. Naji, Jasim M. Salman, Layla Mustafa A.A. Alkatrani
Journal of King Abdulaziz University: Marine Science
The widespread use of traditional plastics, combined with their slow breakdown, has exacerbated environmental and health problems. Therefore, it has become imperative to find alternatives. Due to their simplicity of cultivation, quick growth, tolerance to challenging growing conditions, and low cost, microalgae are being used more frequently as a bio-source for bioplastics lately. Additionally, a variety of biopolymers, including polyhydroxybutyrate, polylactic acid (PLA), starch, polyhydroxyalkanoates (PHA), protein, and cellulose, could be produced by microalgae. These polymers show promising qualities including biodegradability, biocompatibility, and non-toxicity under various cultivation conditions. The purpose of this study is to demonstrate the potential of microalgae …
Magnetically Treated Water: Enhancing Stocking Density, Water Quality, And Growth In Nile Tilapia (Oreochromis Niloticus),
2026
Department of Fish Diseases and Management, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
Magnetically Treated Water: Enhancing Stocking Density, Water Quality, And Growth In Nile Tilapia (Oreochromis Niloticus), Mortada M. A. Hussein, Ayatollah A. H. Abd-El Said, Asmaa N. Mohammed, Fatma M. M. Korni
Journal of King Abdulaziz University: Marine Science
This study aimed to explore the potential of using magnetic treated water (MTW) to increase stocking densities of growing Nile tilapia, Oreochromis niloticus, in storage, productive, and/or rearing holding facilities with limited mortality and water loss. The experimental period was 12 weeks, with 1500 O. niloticus fingerlings acclimated with maintained water parameters. After acclimation, 1350 were randomly selected and used for experiment setting up, including its triplicates. For each replicate, 225 fingerlings were distributed in three experimental tanks of MTW units as group set A, B and C, each received 50, 75, and 100 fingerlings, respectively. Besides, 225 fingerlings …
