Aquaculture and Fisheries Commons^™

Assessment Of The Status Of The Pilbara Demersal Scalefish Resource, Corey Wakefield, Ainslie Denham, Fabian Trinnie, Sybrand A. Hesp, Rachel Marks, Dion Boddington, Stephen J. Newman

Fisheries research reports

Executive Summary

For this assessment of the Pilbara Demersal Scalefish Resource (PDSR) of Western Australia, red emperor and bluespotted emperor are the indicator species used to represent the status of the resource. In addition, goldband snapper, though not an indicator species, is relatively abundant in the annual catches, particularly in deeper waters (around 100 m) and in the western Pilbara region and its status has also been assessed.

The Impacts Of Anthropogenic Activity And Climate Change On The Formation Of Harmful Algal Blooms (Habs) And Its Ecological Consequence, Zhangxi Hu, Aifeng Li, Zhun Li, Margaret R. Mulholland

OES Faculty Publications

No abstract provided.

Capfish Project Report : Phase 1 Outcomes And Summer Academy For The Mediterranean, World Maritime University

Reports

Illegal, unreported and unregulated (IUU) fishing is a complex and multifaceted problem, with disastrous consequences for aquatic ecosystems, coastal communities, fishers and fish workers, and economic and national security. Over the past three years, the CAPFISH Project has strengthened capacity to fight IUU fishing by providing training and educational materials to developing country administrations around the world, most recently with a two-week regional Summer Academy for the Mediterranean. The Academy ran for two weeks and targeted delegates from fisheries administrations in developing countries in North Africa, the Middle East, and Southeast Europe, as a way to promote inter-regional learning and …

Population Demographics Of Channel Catfish In The Lower Wabash River, Valerie J. Thompson

Masters Theses

Inland fisheries are experiencing increasing demands due to anthropogenic stressors, especially within large river systems that support both recreational and commercial fisheries. Riverine species are sensitive to habitat degradation, species introductions, and exploitation, so continued monitoring and management of these communities are vital to maintain abundance and diversity within these systems. The North American catfish family, Ictaluridae, supports both recreational and commercial fisheries throughout the United States. Channel Catfish Ictalurus punctatus are heavily studied and managed compared to other sport catfishes in this family because of their economic and ecological significance. One important Channel Catfish fishery exists in the lower …

Estimating Daily Growth Of Age-0 Channel Catfish In A Free-Flowing, Commercially Exploited Midwestern River, Kaleb B. Wood

Masters Theses

The larval stage in fishes is an important stage in the life history, as their survival dictates the ability of the population to sustain itself as an adult population. While there is a plethora of information available for juvenile and adult life stages of Channel Catfish (Ictalurus punctatus), very little is understood about their larval life stage. This study sought to determine overall density, growth rates, and size structure of cohorts of age-0 Channel Catfish during a study year on the Wabash River. In 2018, I sampled age-0 Channel Catfish using a benthic trawl from May to September. …

State Of The Fisheries: Status Reports And Aquatic Resources Of Western Australia 2022/23, S.J. Newman, K.G. Santoro, D.J. Gaughan

Status reports of the fisheries and aquatic resources

Aquatic resources within Western Australia (WA) are in good condition, and this has positioned WA as a global leader in sustainable fisheries management. The sustainable fisheries of WA continue to support our strong economy and regional communities. Nonetheless, the lack of a consistent approach to build in the knowledge of Traditional Owners remains a gap in our longer term fisheries science in Western Australia.

Climate change and climate variability continues to impact fish stocks, challenging our ability to effectively monitor, assess, and manage fish stocks. We are continually working with our stakeholders, and the broader community to be adaptive, responsive, …

South Coast Offshore Crustacean Resource Of Western Australia Harvest Strategy, Department Of Primary Industries And Regional Development, Western Australia

Fisheries management papers

Harvest strategies for aquatic resources in Western Australia (WA) that are managed by the Department of Primary Industries and Regional Development (DPIRD, the Department) are formal documents that ensures decision-making processes are consistent with the principles of Ecologically Sustainable Development (ESD; Fletcher 2002) and Ecosystem Based Fisheries Management (EBFM; Fletcher et al. 2012). The objectives of ESD are reflected in the objects of the Fish Resources Management Act 1994 (FRMA) and the Aquatic Resources Management Act 2016 (ARMA), which is anticipated replace the FRMA once enacted. At this point, the Fish Resources Management Regulations 1995 (FRMR) is also anticipated to …

Collaborative And Engaged Research To Strengthen Equity And Adaptive Governance In Co-Managed Fisheries, Gabrielle V. Hillyer

Electronic Theses and Dissertations

Small-scale, co-managed fisheries are found throughout the world and often represent intertwining cultures, societies, communities, economies, institutions, and governments. They face complex issues, derived from ecological and social sources. Solving these issues requires diverse expertise, often developed through engaged methodologies which can facilitate collaborative solution creation between researchers, community members, and others. In this dissertation, I demonstrate the benefits of these engaged methodologies and review how they, when coupled with anticolonial approaches to research, can create more equitable solutions to complex issues. This dissertation focuses on multiple projects within the wild clam fishery in Maine including: (1) the creation of …

Resource Assessment Report For Western Australian Salmon In Western Australia, Rodney Duffy Dr., Bianca Brooks, Alex Hesp, Amber Quinn, Blaine Hodgson, Marcus Newman

Fisheries research reports

This document provides a cumulative description and assessment of the Western Australian Salmon Resource (Resource) and all fishing activities (i.e., fisheries / fishing sectors) affecting this Resource in WA. The overall Resource comprises a single species, Western Australian salmon, caught within WA, in both the WCB and SCB. This species is primarily captured during the annual autumn ‘salmon run’ by recreational fishers and commercial beach seine fishers that operate on the South Coast. The report contains information relevant to assist the assessment of the Resource against Environment Protection and Biodiversity Conservation (EPBC) Act export approval requirements / the Marine Stewardship …

Commercial Fishing Identification Guide 2023, Department Of Primary Industries And Regional Development, Western Australia

Fisheries occasional publications

Throughout this guide you will see all or some of the marine bioregion symbols with each fish illustration, indicating where the species is most likely to occur.

This guide has been developed to help you identify the more common species in Western Australia you may encounter. The purpose of this guide is to enhance consistent and accurate species identification.

If you are unsure about a particular species (or if it is not in this guide), please discuss it with a representative of the Department of Primary Industries and Regional Development, Western Australia.

State Of The Fisheries: Status Reports And Aquatic Resources Of Western Australia 2021/22, Department Of Primary Industries And Regional Development, Western Australia, S J. Newman, B S. Wise, K G. Santaro, D J. Gaughan

Status reports of the fisheries and aquatic resources

Aquatic resources within Western Australia (WA) are in good condition, and this has positioned WA as a global leader in sustainable fisheries management. The sustainable fisheries of WA continue to support our strong economy and regional communities. Nonetheless, the lack of a consistent approach to build in the knowledge of Traditional Owners remains a gap in our longer-term fisheries science in Western Australia.

Climate change and climate variability continues to impact fish stocks, challenging our ability to effectively monitor, assess, and manage fish stocks. We are continually working with our stakeholders, and the broader community to be adaptive, responsive, and …

An Exploration Of Palauan Fishing Methods And Fisheries: A Study For The Conservation Of Dugongs, Mia Glover

Electronic Theses and Dissertations

The dugong (Dugong dugon) is an important marine mammal in Palau. However, current population dynamics are not well understood. This study aimed to connect scientific data with local knowledge by examining the social implications of changing fishing methods and their impact on dugong population dynamics in the face of climate change and fisheries commercialization. Through interviews with local fishers, it was found that destructive fishing methods like trawling and long lining have led to habitat loss and degradation for dugongs. These tactics, driven by economic factors, have disrupted the delicate balance between human activities and the preservation of dugong habitats, …

Understanding Dietary And Thermal Influences On Invasive Cichlids In Puerto Rico Reservoir Systems, Jacob A. Moreland

Theses and Dissertations

Jaguar Guapote (Parachromis managuensis) and Amphilophus spp. were assessed for effects of temperature on standard metabolic rate (SMR) and lower dissolved oxygen tolerance (LDOT), efficacy of gastric lavage for diet analysis, and diet in Puerto Rico reservoirs. Fish were acclimated to 22°C, 28°C, and 34°C and SMR and LDOT were measured using intermittent respirometers. Jaguar Guapote acclimated to 34°C had the greatest SMR, with 22°C and 28°C having similar SMR values. Amphilophus spp. acclimated to 28°C were similar to fish acclimated at 22°C and 34°C. Fish were resilient to high temperatures, losing equilibrium more rapidly at the coldest temperature, 22°C. …

The Influence Of Range Shifts And Wind Energy On The Atlantic Surfclam (Spisula Solidissima) And Ocean Quahog (Arctica Islandica) Fisheries On The U.S. Outer Continental Shelf, Stephanie Stromp

Master's Theses

The Atlantic surfclam, Spisula solidissima, is a biomass dominant bivalve of the Northwestern Atlantic. The surfclam’s historic range extended from Cape Hatteras to Georges Bank, but recent decades of warming bottom water temperatures have caused the surfclam to shift its range to cooler waters north and offshore within the range of the ocean quahog, Arctica islandica. An ecotone now exists over much of the offshore range of the surfclam in which surfclams and ocean quahogs co-occur. Regulations prohibit fishers from landing both species in the same catch, limiting fishing to locations where the target species can be sorted …

American Eel (Anguilla Rostrata) And Other Fishes As Surveyed By Environmental Dna In The Bronx River And Hudson River Watershed, Sam C. Chin

Dissertations, Theses, and Capstone Projects

Mounting an effective response to the threats faced by freshwater fish may require expansions to aquatic biomonitoring in excess of what is feasible using the capture-based survey techniques currently relied upon by natural resource managers. Methods for analyzing environmental DNA (eDNA) are emerging as a minimally invasive and cost-effective approach for surveying fish and other organisms. By detecting taxon-specific DNA sequences recovered from environmental samples (e.g. water, sediment), eDNA methods are able to infer species presence from samples that can be collected rapidly with simple equipment. In many cases, eDNA detection rates of fish species have been shown to meet …

Potential Repercussions Of Offshore Wind Energy Development In The Northeast United States For The Atlantic Surfclam Survey And Population Assessment, Sarah Borsetti, Daphne M. Munroe, Andrew M. Scheld, Eric N. Powell, John M. Klinck, Eileen E. Hofmann

CCPO Publications

The Atlantic surfclam Spisula solidissima fishery, which spans the U.S. Northeast continental shelf, is among the most exposed to offshore wind energy development impacts because of the overlap of fishing grounds with wind energy lease areas, the hydraulic dredges used by the fishing vessels, and the location of vessel home ports relative to the fishing grounds. The Atlantic surfclam federal assessment survey is conducted using a commercial fishing vessel in locations that overlap with the offshore wind energy development. Once wind energy turbines, cables, and scour protection are installed, survey operations within wind energy lease areas may be curtailed or …

Interactive Effects Of Climate Change-Induced Range Shifts And Wind Energy Development On Future Economic Conditions Of The Atlantic Surfclam Fishery, Stephanie Stromp, Andrew M. Scheld, John M. Klinck, Daphne M. Munroe, Eric N. Powell, Roger Mann, Sarah Borsetti, Eileen E. Hofmann

CCPO Publications

Rising water temperatures along the northeastern U.S. continental shelf have resulted in an offshore range shift of the Atlantic surfclam Spisula solidissima to waters still occupied by ocean quahogs Arctica islandica. Fishers presently are prohibited from landing both Atlantic surfclams and ocean quahogs in the same catch, thus limiting fishing to locations where the target species can be sorted on deck. Wind energy development on and around the fishing grounds will further restrict the fishery. A spatially explicit model of the Atlantic surfclam fishery (Spatially Explicit Fishery Economics Simulator) has the ability to simulate the consequences of fishery displacement …

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 …

Fitting Time Series Models To Fisheries Data To Ascertain Age, Kathleen S. Kirch, Norou Diawara, Cynthia M. Jones

OES Faculty Publications

The ability of government agencies to assign accurate ages of fish is important to fisheries management. Accurate ageing allows for most reliable age-based models to be used to support sustainability and maximize economic benefit. Assigning age relies on validating putative annual marks by evaluating accretional material laid down in patterns in fish ear bones, typically by marginal increment analysis. These patterns often take the shape of a sawtooth wave with an abrupt drop in accretion yearly to form an annual band and are typically validated qualitatively. Researchers have shown key interest in modeling marginal increments to verify the marks do, …

Virginia Fishery Resource Grant Program 2022, Virginia Institute Of Marine Science, Virginia Fishery Resource Grant Program

Reports

The Virginia Fishery Resource Grant Program (VFRGP) enables members of Virginia’s seafood industries to develop ideas to protect and enhance the Commonwealth’s coastal and marine resources. Since its inception in 1999, the annually funded program has supported 143 projects, five of which were approved to start in 2022. These projects enable members of seafood industries to pursue ideas for increasing efficiency and sustainability that will benefit the entire industry, without personally bearing the cost and high risk. The VFRGP is coordinated by the Virginia Institute of Marine Science, Marine Advisory Program (VIMS MAP), in partnership with Virginia Sea Grant Marine …

Characterization Of Nursery Habitats Used By Black Sea Bass And Summer Flounder In Chesapeake Bay And The Coastal Lagoons, Mary C. Fabrizio, Troy D. Tuckey, Shannon C. Smith, Paige G. Ross, Richard A. Snyder, Harry V. Wang, Aaron J. Bever

Reports

Coastal habitats are increasingly impacted by intersecting and often competing human activities overlaid on habitat loss and degradation. These demands have prompted resource managers to implement marine spatial-planning strategies (Foley et al. 2010), but the effectiveness of this approach depends on the quality and resolution of the ecological information considered in delineating best uses of public natural resources. Many economically and ecologically important species such as summer flounder and black sea bass depend on inshore nursery habitats, yet habitat-specific utilization patterns lack the resolution needed to protect critical areas and inform ecological restoration strategies. To address these data gaps, we …

2022 Annual Report - Estimating Relative Juvenile Abundance Of Ecologically Important Finfish In The Virginia Portion Of Chesapeake Bay (1 July 2021 – 30 June 2022), Troy D. Tuckey, Mary C. Fabrizio

Reports

The Trawl Survey provides crucial data to state, regional, and national fisheries management agencies, including the Virginia Marine Resources Commission (VMRC), the Atlantic States Marine Fisheries Commission (ASMFC), the Mid‐Atlantic Fisheries Management Council (MAFMC), and the National Marine Fisheries Service (NMFS). The MAFMC recognizes the juvenile trawl survey as one of the key predictors of Summer Flounder recruitment. Annual indices of juvenile abundance have been generated from trawl survey data for species of key recreational and ecological importance in the Virginia portion of Chesapeake Bay. These include Spot, Atlantic Croaker, Weakfish, Summer Flounder, Black Sea Bass, Scup, Striped Bass, White …

Annual Report - 2021 Data Collection And Analysis In Support Of Single And Multispecies Stock Assessments In Chesapeake Bay: The Chesapeake Bay Multispecies Monitoring And Assessment Program, Christopher F. Bonzek, James Gartland, Debra J. Gauthier, Robert J. Latour

Reports

Historically, fisheries management has been based on the results of single-species stock assessment models that focus on the interplay between exploitation level and sustainability. There currently exists a suite of standard and accepted analytical frameworks (e.g., virtual population analysis (VPA), biomass dynamic production modeling, delay difference models, etc.) for assessing the stocks, projecting future stock size, evaluating recovery schedules and rebuilding strategies for overfished stocks, setting allowable catches, and estimating fishing mortality or exploitation rates. A variety of methods also exist to integrate the biological system and the fisheries resource system, thereby enabling the evaluation of alternative management strategies on …

Annual Report 2022 - Data Collection And Analysis In Support Of Single And Multispecies Stock Assessments In Chesapeake Bay: The Chesapeake Bay Multispecies Monitoring And Assessment Program, Gina M. Ralph, Christopher F. Bonzek, James Gartland, Debra J. Gauthier, Jameson Gregg, Robert J. Latour

Reports

The threats affecting living marine resources are diverse, including overfishing, climate change, and pollution. In response to long-term challenges in fisheries management, a more holistic evaluation of the natural and anthropogenic drivers of populations sizes is needed. Ecosystem management (EM), a suite of strategies that incorporate ecosystem considerations into fisheries and ecosystem management, can be difficult to implement in practice. In the Mid-Atlantic, efforts to implement EM are ongoing; one output has been the annual ‘State of the Ecosystem Report’ for the region, synthesizes available data on a variety of environmental, ecological, and socioeconomic factors. Historically, the data needed for …

A Call For Ethical And Responsible Treatment Of Invasive Species By Recreational Anglers, Kevin A. Adeli

Human–Wildlife Interactions

Invasive species pose a prominent threat to global biodiversity, with aquatic ecosystems being particularly susceptible. In an effort to limit the spread of aquatic invasive species, numerous public awareness programs have been launched, and several regions have enacted “must-kill” angling regulations, which prohibit the live release of invasive fish species when captured. Many education programs, however, demonize invasive species and lack any instruction for humane euthanasia. This unbalanced approach has translated into widespread mistreatment of invasive species among recreational anglers. This piece addresses these concerns by discussing their significance and providing recommendations for how education programs can adopt a more …

Attitudes And Behaviors For Understanding Compliance In Greenland's Atlantic Salmon (Salmo Salar) Fishery, Hunter T. Snyder, Rodrigo Oyanedel, Christopher S. Sneddon, Andrew M. Scheld

VIMS Articles

Noncompliance is a central challenge for conservation, but in settings with limited access to behavioral data, it can be difficult to evaluate what drives compliance. Conservationists can measure and evaluate resource users' attitudes, and in so doing, leverage a complementary, nonbehavioral measure for evaluating compliance. In Greenland, wild Atlantic salmon (Salmo salar) fishers are under increasing regulatory pressure to report salmon catch because the majority of North Atlantic salmon stocks are classified as suffering. The objective of this study is to measure salmon catch reporting compliance, reporting behavior, and attitudes toward Greenland's salmon management. We surveyed Greenland's licensed salmon fishers, …

Evaluating Recruitment Of American Eel, Anguilla Rostrata, In The Potomac River (Spring 2022), Troy D. Tuckey, Mary C. Fabrizio

Reports

American Eel (Anguilla rostrata) is a valuable commercial species along the Atlantic coast of North America from New Brunswick to Florida. Landings from Chesapeake Bay typically represent 60% of the annual United States commercial harvest (ASMFC 2012). American Eel is also important to the recreational fishery as it is often used live as bait for Striped Bass (Morone saxatilis) and Cobia (Rachycentron canadum). In 2021, Chesapeake Bay commercial landings of American Eel (284,297 lbs) were 87% of the U.S. landings of yellow eel (personal communication from the National Marine Fisheries Service, Fisheries Statistics Division). …

A Characterization Of The Sandy Beach Surf Zone Fish Community And Their Ecology In Northern California And The Effects Of Marine Protected Areas, Katie B. Terhaar

Cal Poly Humboldt theses and projects

Historically written off as dull and homogenous, the dynamics of the sandy beach surf zone remains under studied world-wide. Northern California has been no exception to this global standard, as the sandy beach surf zone ecosystem in this region has yet to be characterized, and the effect of Marine Protected Areas (MPAs) on the fish and macroinvertebrate community fully ascertained.

Considered data-poor by local wildlife officials, commercially, recreationally and culturally important Amphistichus rhodoterus (redtail surfperch) and common Hyperprosopon ellipticum (silver surfperch) utilize the sandy beach surf zone in Northern California. Little is known about the effect of various environmental factors, …

A Cooperative High Precision Dredge Survey To Assess The Mid-Atlantic Sea Scallop Resource Area In 2019 And 2020: Final Report, Sally Roman, David Rudders

Reports

For the sea scallop, Placopecten magellanicus, current and accurate information related to the abundance and distribution of adult and juvenile scallops is essential for effective management of the resource. Scallop management is a combination of input and output controls, with a focus on spatial area management. The continued prosperity of the scallop resource and fishery is dependent on both periodic and large incoming year classes, as well as a mechanism to delineate the scale of a recruitment event and subsequently monitor the growth and abundance of these scallops over time.

Acknowledging the importance of accurate, timely, and meaningful information …

Ecological Risk Assessment For The Temperate Demersal Elasmobranch Resource, Maddison Watt, Matias Braccini, K. A. Smith, Matthew Hourston

Fisheries research reports

In March 2021, the Department of Primary Industries and Regional Development (Department) convened an ecological risk assessment (ERA) of the fisheries that access the Temperate Demersal Elasmobranch Resource (Resource). ERAs are conducted by the Department as part of its Ecosystem Based Fisheries Management framework.