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Detection Of Toxins And Harmful Algal Bloom Cells In Shellfish Hatcheries And Efforts Toward Removal, Marta P. Sanderson, Karen Hudson, Lauren Gregg, Amanda Chesler-Poole, JA M. Small, Kimberly S. Reece, Ryan Carnegie, Juliette L. Smith 2023 Virginia Institute of Marine Science

Detection Of Toxins And Harmful Algal Bloom Cells In Shellfish Hatcheries And Efforts Toward Removal, Marta P. Sanderson, Karen Hudson, Lauren Gregg, Amanda Chesler-Poole, Ja M. Small, Kimberly S. Reece, Ryan Carnegie, Juliette L. Smith

VIMS Articles

As the start of the supply chain for the aquaculture industry, hatcheries are a crucial component in the success of oyster and northern quahog (hard clam) aquaculture on the East Coast of the US. Intermittent failures in hatchery production slow industry growth and reduce profits. To begin investigations into the possible role of algal toxins in hatchery production failure, post-treatment hatchery water from one research and four commercial hatcheries in lower Chesapeake Bay, USA, was sampled for (1) toxin presence and (2) harmful algal bloom (HAB) cell enumeration. Overall, seven toxin classes, likely produced by six different HAB species, were …


Ecological Risk Assessment For The Western Australian Silverlip Pearl Oyster (Pinctada Maxima) Resource, K. A. Smith, S. Brown, A. M. Hart, A. Bissell 2023 Department of Primary Industries and Regional Development, Western Australia

Ecological Risk Assessment For The Western Australian Silverlip Pearl Oyster (Pinctada Maxima) Resource, K. A. Smith, S. Brown, A. M. Hart, A. Bissell

Fisheries research reports

In August 2022, the Department of Primary Industries and Regional Development (DPIRD) convened an ecological risk assessment (ERA) of the fishery and aquaculture operations that access the Western Australian (WA) Silverlip Pearl Oyster (Pinctada maxima) resource (Resource).

The ERA considered the potential ecological impacts of the WA commercial Silverlip Pearl Oyster Fishery and related aquaculture activities including hatchery and seeding operations. The assessment evaluated the impact of each activity on all relevant retained and discarded species; threatened, endangered and protected species; habitats and the broader environment. Risks associated with aquaculture activities were also considered, including genetic impacts on …


Capacity-Building Project To Progress The Implementation Of International Instruments To Combat Iuu Fishing (Capfish) : Workshop 3, 18-21 October 2022, World Maritime University 2023 World Maritime University

Capacity-Building Project To Progress The Implementation Of International Instruments To Combat Iuu Fishing (Capfish) : Workshop 3, 18-21 October 2022, World Maritime University

Reports

Illegal, Unreported and Unregulated (IUU) fishing is a complex and multifaceted problem, with dire consequences for aquatic ecosystems, coastal communities, fishers and fish workers, and economic and national security. It particularly affects developing countries, and is estimated to cost the global economy USD 20 billion each year. This represents foregone taxes, license fees, and revenue from resources that could have been legally exploited. Future opportunities are also lost as fish stocks dwindle and collapse, with knock-on socioeconomic effects. As those involved in IUU fishing seek to cut costs wherever possible, and are often involved in other illegal activities, IUU fishing …


Challenges Experienced By Aquaponic Hobbyists, Producers, And Educators, D Allen Pattillo, David J. Cline, Janelle V. Hager, Luke A. Roy, Terrill R. Hanson 2022 University of Maryland, College Park

Challenges Experienced By Aquaponic Hobbyists, Producers, And Educators, D Allen Pattillo, David J. Cline, Janelle V. Hager, Luke A. Roy, Terrill R. Hanson

The Journal of Extension

We used an online survey to document challenges experienced by aquaponic hobbyists (n = 81), producers (n = 117), and educators (n = 75). Responses were distilled into the following categories: 1) operations and management; 2) facilities, location, and system design; 3) knowledge and educational resources; 4) funding; 5) economic viability; 6) plant culture; 7) marketing and distribution; 8) fish culture; 9) human factors; 10) regulations and certifications. Training and research in these areas are needed to advance the aquaponics industry.


Length-Weight Relationships Of The Bream Abramis Brama (Linnaeus, 1758) In Beni- Haroun Dam Of Mila City (North-East Of Algeria), Tolba Mounia, Hadjab Ramzi, Chikara Bouziani Mohamed, Berrouk Houda, Kaouachi Nouha 2022 Department of Life and Nature Sciences, Larbi Ben M'Hidi University, Oum El Bouaghi, Algeria.

Length-Weight Relationships Of The Bream Abramis Brama (Linnaeus, 1758) In Beni- Haroun Dam Of Mila City (North-East Of Algeria), Tolba Mounia, Hadjab Ramzi, Chikara Bouziani Mohamed, Berrouk Houda, Kaouachi Nouha

Journal of Bioresource Management

The study of fish growth is a valuable tool in providing good understanding on the general biology and growth of fish populations, in addition to the comparison of the same fish species populations living in remote geographic areas. Thus, the present work was designed to study the age and growth of Abramis brama species newly introduced in Beni-Haroun dam (Mila department, Northeast Algeria). Here, the study was conducted on sampling of 141 individuals from July 2015 to October 2016. The age of fishes was determined according to scalimetric method, since the fish sex was determined by macroscopic method, showing that …


Phytoplankton Community Of Boalia Khal Tributary Of The Halda River, Chattogram, Bangladesh, Md. Shafiqul Islam, M.A. Azadi, Munira Nasiruddin 2022 Department of Zoology, University of Chittagong, Chattogram 4331, Bangladesh.

Phytoplankton Community Of Boalia Khal Tributary Of The Halda River, Chattogram, Bangladesh, Md. Shafiqul Islam, M.A. Azadi, Munira Nasiruddin

Journal of Bioresource Management

Boalia Khal is one of the important tributaries of the River Halda. The productivity of the Boalia Khal tributary of the Halda River mainly depends on the phytoplankton diversity. A study was conducted for two years period from January 2017 to December 2018 to identify the phytoplankton community of the Boalia Khal tributary. A total of 61 species of phytoplankton under 37 genera belonging to 8 classes were recorded. The dominant group of phytoplankton was 25 species of Diatoms (40.98 %) followed by 18 species of Green Algae (29.5 %), 9 species of Euglenophytes (14.75 %), 7 species of Blue …


Using Reflex Actions To Predict Delayed Post-Harvest Mortality Of American Lobster (Homarus Americanus) In Maine’S Lobster Supply Chain, Cassandra Leeman 2022 University of Maine

Using Reflex Actions To Predict Delayed Post-Harvest Mortality Of American Lobster (Homarus Americanus) In Maine’S Lobster Supply Chain, Cassandra Leeman

Electronic Theses and Dissertations

In live seafood industries, maintaining product quality and survivorship are critical aspects of the supply chain infrastructure. Post-harvest mortality in the American lobster (Homarus americanus) fishery can result in a significant loss in revenue for the largest single species fishery in North America. In Maine, the wholesale lobster distribution supply chain directly and indirectly supports state and local economies, providing almost $1 billion in revenue and dominates the fishery, producing 82% of the total lobster landings in the USA (Donihue, 2018; NOAA, 2021). However, at least 2% of the lobster landed in Maine die before they reach consumers, representing an …


Barriers To And Opportunities For Adoption In Maine’S Aquaculture Industry, Caitlin Cleaver 2022 University of Maine

Barriers To And Opportunities For Adoption In Maine’S Aquaculture Industry, Caitlin Cleaver

Electronic Theses and Dissertations

Aquaculture, or the farming of marine species, can diversify coastal economies, but development of this industry is hindered by negative perceptions or regulatory constraints. Commercial fishers are logical adopters of aquaculture, but can also mount opposition to its growth. This dissertation utilized innovation theory to understand fishers’ perceptions of and willingness to adopt aquaculture and drivers of and barriers to scallop aquaculture development in Maine (USA). Through a mail survey, lobster fishers’ perceptions of Maine’s aquaculture industry and their willingness to adopt aquaculture were assessed (Chapter 2). Individuals who were more satisfied with government management of aquaculture held more positive …


Assessing The Legacy Of Erosion And Flood Control Management Efforts On The Fish Assemblages And Physical Conditions Of Yazoo Basin Bluff Hill Streams, Nicky M. Faucheux 2022 Mississippi State University

Assessing The Legacy Of Erosion And Flood Control Management Efforts On The Fish Assemblages And Physical Conditions Of Yazoo Basin Bluff Hill Streams, Nicky M. Faucheux

Theses and Dissertations

The hills of Yazoo Basin have a long history of land use modification and subsequent erosion and flood control issues. In response, federal actions were taken to address these issues beginning after the Mississippi River flood of 1927. Four major flood control reservoirs were built in 1932-1957, and instream low-drop grade control structures (GCS) were installed beginning in the 1980s. The objective of my dissertation was to ascertain the long-term effects of these efforts on stream fish assemblages and channel morphology. To assess whether the reservoirs affected upstream fish assemblages as barriers to recolonization by fluvial fishes or as source …


The Use Of 87sr/86sr Isotopic Ratios To Assess Natal Areas And Movement Of Juvenile Gulf Sturgeon Acipenser Oxyrinchus Desotoi In The Pascagoula And Pearl River Systems, Joshua Neary 2022 Mississippi State University

The Use Of 87sr/86sr Isotopic Ratios To Assess Natal Areas And Movement Of Juvenile Gulf Sturgeon Acipenser Oxyrinchus Desotoi In The Pascagoula And Pearl River Systems, Joshua Neary

Theses and Dissertations

The effects of water and dietary influence, and time duration for discernment, of pectoral fin spine 87Sr/86Sr were evaluated in Atlantic Sturgeon Acipenser oxyrinchus oxyrinchus. Fish were subjected to 87Sr-enriched water (0.1 mg/L) or diet (0.25 migrogram/g or 0.5 microgram/g) for 1, 2, 3, 6, or 12 weeks. Fish were also held at 15 or 25°C to determine if temperature influenced 87Sr/86Sr. Results found fin spine 87Sr/86Sr changed in water after 1 week and diet after 12 weeks suggesting water is the primary influence. In wild Gulf Sturgeon A. o. …


Crustacean Assemblage Structure Over The Charlie-Gibbs Fracture Zone Of The Mid-Atlantic Ridge Collected During The 2009 Henry B. Bigelow Expedition, Kathryn Medina 2022 Nova Southeastern University

Crustacean Assemblage Structure Over The Charlie-Gibbs Fracture Zone Of The Mid-Atlantic Ridge Collected During The 2009 Henry B. Bigelow Expedition, Kathryn Medina

All HCAS Student Capstones, Theses, and Dissertations

The Charlie Gibbs Fracture Zone (CGFZ) consists of two nearly parallel fracture transform faults that intersect the Mid-Atlantic Ridge (MAR) axis. This area has high primary productivity and biomass levels due to the topography and water. A predominant hydrographic feature of the MAR is the Sub-Polar Front (SPF) which runs along the southern edge of the CGFZ and is known as a biogeographical boundary for multiple species. As part of The Census of Marine Life project Patterns and Processes of the Ecosystem of the northern Mid-Atlantic (MAR-ECO), this study analyzed the abundance and distribution patterns of the CGFZ crustacean community …


Landings, Vol. 30, No. 12, Maine Lobstermen’s Community Alliance, Melissa Waterman, Patrice McCarron, Patrick Keliher 2022 Maine Lobstermen’s Community Alliance

Landings, Vol. 30, No. 12, Maine Lobstermen’S Community Alliance, Melissa Waterman, Patrice Mccarron, Patrick Keliher

Landings: News & Views from Maine's Lobstering Community

Landings content emphasizes science, history, resource sustainability, economic development, and human interest stories related to Maine's lobster industry. The newsletter emphasizes lobstering as a traditional, majority-European American lifeway with an economic and social heritage unique to the coast of Maine. The publication focuses how ongoing research to engage in sustainable, non-harmful, and non-wasteful commercial fishing practices benefit both the fishery and Maine's coastal legacy.

For more information, please visit the Maine Lobstermen’s Community Alliance (MLCA) website.


How Low Can You Go? Expanding Oyster Tidal Niche With Predator Induction, Carter Lin 2022 University of South Alabama

How Low Can You Go? Expanding Oyster Tidal Niche With Predator Induction, Carter Lin

Theses and Dissertations

An oyster’s realized niche is constrained by different stressors based on tidal elevation, such as desiccation or benthic predators. These factors constrain survival and set the boundary for their realized niche. Eastern oysters (Crassostrea virginica) also harden their shells in response to predation risk which reduces their mortality. We performed an empirical study to investigate if this defense mechanism could be manipulated to expand their realized niche. We raised oysters in the presence of blue crab predators (Callinectes sapidus) or in controls sans predators, then monitored their survival at different tidal elevations. Oyster survival was significantly higher in the highest …


Aquaculture In Africa: Aquatic Animal Welfare, Impact On The Environment And The Sustainability Of The Sector, Mwenda M. Mbaka, Janice H. Cox, Stephen Ronan 2022 WellBeing International

Aquaculture In Africa: Aquatic Animal Welfare, Impact On The Environment And The Sustainability Of The Sector, Mwenda M. Mbaka, Janice H. Cox, Stephen Ronan

Aquaculture

The African aquaculture sector recorded the fastest growth in the world between 2006-2018, averaging 10% or more, and is expected to partially fill the growing fish supply-demand gap up to 2063. In 2018, there were about 1.2 million aquafarmers across the continent, an increase from 920 thousand in 2014. According to the African Development Bank, expansion of aquaculture in Africa is hampered by "the overwhelming predominance of tilapia farming, which relies heavily on the production of fingerlings from a limited number of genetically improved strains that are resistant to the many diseases affecting this species, and on the production of …


Developing Novel Remote Camera Approaches To Assess And Monitor The Population Status Of Australian Sea Lions, Mathew Hourston, Daniela Waltrick, Stuart Blight, Ainslie Denham, Alex Hesp, Steve Taylor 2022 Department of Primary Industries and Regional Development

Developing Novel Remote Camera Approaches To Assess And Monitor The Population Status Of Australian Sea Lions, Mathew Hourston, Daniela Waltrick, Stuart Blight, Ainslie Denham, Alex Hesp, Steve Taylor

Fisheries research reports

This project trialled the use of remote cameras to monitor the relative abundance of Australian sea lions (ASLs, Neophoca cinerea) at three Western Australian (WA) breeding colonies. The research was undertaken by the Department of Primary Industries and Regional Development (DPIRD) to assess whether the analysis of camera footage could be used to estimate ASL relative abundance, providing an alternative to the traditional “boots on the ground” approach (hereon in “BoG”) of visiting colonies to count animals. This report outlines the strengths and limitations of this novel approach rather than providing an update on the population status of ASLs. …


The Impacts Of A Quagga And Zebra Mussel Infestation, Casey Silva 2022 Utah State University

The Impacts Of A Quagga And Zebra Mussel Infestation, Casey Silva

All Graduate Plan B and other Reports

Invasive species issues have been on the rise in the United States for decades. These organisms can disrupt the natural flow of an ecosystem and overtake native species, altering an environment as a whole. The introduction of the zebra mussel (Dreissena polymorpha) in 1988, followed by the quagga mussel (Dreissena rostriformis) in 1989 is arguably the most prolific aquatic infestation the nation is currently up against (Hoddle, 2022). Beginning in the Great Lakes, both quagga and zebra mussels quickly spread their infestations through the Midwest and the East coast. The potential invasion of these species across …


Resource Document On The Nexus Between Animal Welfare, The Environment, And Sustainable Development, WellBeing International 2022 WellBeing International

Resource Document On The Nexus Between Animal Welfare, The Environment, And Sustainable Development, Wellbeing International

Nexus – UNEP – Animal Welfare, Environment, Sustainable Development

This Resource Document has been developed to explore the Nexus (links) between Animal Welfare, the Environment, and Sustainable Development. The document includes relevant citations and reports addressing the topics encompassed by the Nexus. It will be maintained as a “living document” (subject to revision) in the WellBeing International Studies Repository. The original document and subsequent revisions will be kept in the Repository to provide a record of the changes.


Systematic Review And Meta-Analysis Of The Growth Performance And Carcass Composition Of Nile Tilapia (Oreochromis Niloticus) Fed Dietary Copra Meal, Tzodoq Obrero Magbanua, Janice A. Ragaza 2022 Ateneo de Manila University

Systematic Review And Meta-Analysis Of The Growth Performance And Carcass Composition Of Nile Tilapia (Oreochromis Niloticus) Fed Dietary Copra Meal, Tzodoq Obrero Magbanua, Janice A. Ragaza

Biology Faculty Publications

Introduction

Nile tilapia (Oreochromis niloticus) is one of the most cultured species in the aquaculture industry. However, its market price is affected by the increasing cost of fishmeal. Plant-based proteins are being used to mitigate the problem.

Methodology

This paper comprehensively quantified the growth performance and carcass composition of Nile tilapia fed copra meal via systematic review and meta-analysis. The literature review and paper selection were done based on the preferred reporting items for systematic reviews and meta-analysis method. The data from peer-reviewed papers that qualified from the inclusion screening criteria such as standard error reporting, feeding period, absence of …


Ecological Risk Assessment For The Western Rock Lobster Resource; Background Information, Jason How, Emma-Jade Tuffley, Rebecca Oliver, Scott Evans, Mathew Hourston, Simon de Lestang 2022 DPIRD

Ecological Risk Assessment For The Western Rock Lobster Resource; Background Information, Jason How, Emma-Jade Tuffley, Rebecca Oliver, Scott Evans, Mathew Hourston, Simon De Lestang

Fisheries research reports

In April 2022, the Department of Primary Industries and Regional Development (DPIRD, Department) convened an ecological risk assessment (ERA) of the fisheries that access the Western Rock Lobster Resource (Resource). ERAs are conducted by the Department as part of its Ecosystem Based Fisheries Management (EBFM) framework.

This report provides an overview of the Western Australian (WA) fisheries that access the Resource to support the ERA risk scoring process. The ERA considered the potential ecological impacts of the harvest of the Resource by all sectors, including the commercial fisheries; West Coast Rock Lobster Managed Fishery (WCRLMF) and South Coast Crustacean Managed …


Landings, Vol. 30, No. 11, Maine Lobstermen’s Community Alliance, Melissa Waterman, Patrice McCarron, Robin Alden 2022 Maine Lobstermen’s Community Alliance

Landings, Vol. 30, No. 11, Maine Lobstermen’S Community Alliance, Melissa Waterman, Patrice Mccarron, Robin Alden

Landings: News & Views from Maine's Lobstering Community

Landings content emphasizes science, history, resource sustainability, economic development, and human interest stories related to Maine's lobster industry. The newsletter emphasizes lobstering as a traditional, majority-European American lifeway with an economic and social heritage unique to the coast of Maine. The publication focuses how ongoing research to engage in sustainable, non-harmful, and non-wasteful commercial fishing practices benefit both the fishery and Maine's coastal legacy.

For more information, please visit the Maine Lobstermen’s Community Alliance (MLCA) website.


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