Aquaculture and Fisheries Commons^™

Fish-Spec: Fast Identification System For Handheld Spectroscopy And Species Classification, Mitchell Sueker, Nicholas Mackinnon, Gregory Bearman, Amanda Tabb, Diane Kim, Rosalee S. Hellberg, Alireza Akhbardeh, Hamid Reza Marateb, Jianwei Qin, Moon Kim, Fartash Vasefi, Hossein Kashani Zadeh

Food Science Faculty Articles and Research

Accurate fish species identification is critical to prevent mislabeling and fraud in the seafood industry. We present a handheld multi-mode point spectroscopy system that combines fluorescence (365 and 395 nm excitation) and reflectance measurements in the visible to near-infrared (∼350–900 nm) and short-wave infrared (∼900–1700 nm) regions for rapid, non-destructive classification of fish fillets. Tissue spectra were acquired at 25 positions on 68 fillets from 11 species, in both frozen and thawed states. Feature-level fusion across all four modes enabled higher classification accuracy than any single mode alone. A global machine-learning model classified all species with 85 ± 2.8 %, …

Fisheries Science Update - Western Australian Shark Resource: 2024 Stock Assessment Outcomes, Department Of Primary Industries And Regional Development, Western Australia

Fisheries Science Updates

The Western Australian (WA) shark resource includes more than 100 species of sharks and rays.

Key shark species are sustainably harvested in two commercial shark fisheries that provide fresh, local, affordable seafood to the WA community.

The WA shark resource has been in recovery since the 1990s–2000s when stocks were found to be at risk.

The Department of Primary Industries and Regional Development (DPIRD) tracks stock status by undertaking periodic weight of evidence stock assessments of indicator species.

Gummy, whiskery, dusky whaler, and sandbar sharks, are the indicator species for the WA shark resource, and make up ~80% of the …

Fisheries Research Report No. 360: Best Practice And Policy In Australian Abalone Stock Enhancement, Frdc Project No. 2019/110, Lachlan W. Strain, Anthony M. Hart

Fisheries Research Reports

This report provides the most comprehensive evaluation of abalone stock enhancement in Australia to date. The review demonstrates the significant advancements in abalone stock enhancement and concludes that the knowledge and expertise to undertake large-scale (commercial) abalone stock enhancement is present within Australia. The development of policy/guidelines on marine stock enhancement has occurred across all jurisdictions but is still limited in abalone specific policy that could facilitate commercial enhancement programs effectively. Unfortunately, there is a high degree of variability between jurisdictions in both capacity and policy, which was reflected in the jurisdictional scoring against current “best practice” on marine stock …

Fisheries Research Report No. 357: Recreational Fishing For Marron In South-West Western Australia In 2025 - Estimates Of Participation, Effort And Catch, Claire B. Smallwood, Karina L. Ryan, Eva Lai

Fisheries Research Reports

The smooth marron (Cherax cainii) (‘marron’) is endemic to freshwater dams and rivers of south-west Western Australia. Marron are managed as a single stock within the South-West Recreational Freshwater Resource and are highly vulnerable to over-exploitation due to the biological characteristics of the species (e.g., low fecundity, localised populations) as well as environmental (e.g., habitat loss, reduction in rainfall) and human (e.g., fishing, land clearing) pressures on freshwater ecosystems.

Due to this vulnerability, this species has been the focus of research, monitoring and management since the 1970’s. Since 2000, annual phone-recall (2000 – 2021) and online-recall (2022 – 2025) surveys …

Assessing The Effectiveness Of Extension Services On Aquaculture Development In Ashanti Region, Ghana, Bismark Essel

World Maritime University Dissertations

No abstract provided.

Fisheries Research Report No. 355: Recreational Fishing For Western Rock Lobster In 2024/25: Estimates Of Participation, Effort And Catch, Claire B. Smallwood, Karina L. Ryan, Alissa Tate

Fisheries Research Reports

The Western Rock Lobster (WRL) (Panulirus cygnus) is the most commonly caught Rock Lobster (RL) species in Australia. Catches from the commercial and recreational sectors are required to determine and monitor Total Allowable Commercial Catch (TACC), Total Allowable Recreational Catch (TARC) and the proportion of Allowable Harvest Level (AHL) achieved. The TARC is evaluated annually based on a 5-year average.

Data for the recreational sector are obtained using phone-recall surveys to provide annual estimates of participation, fishing effort and retained catch (by numbers) from recreational fishers who hold a RL licence. Average weight, obtained from boat ramp surveys, are used …

Fisheries Research Report No. 354: Recreational Fishing For Abalone In Western Australia In 2024/2025 - Estimates Of Participation, Effort And Catch, Claire B. Smallwood, Karina L. Ryan, Lachlan W. Strain

Fisheries Research Reports

The Western Australian Recreational Abalone Fishery (RAF) operates in shallow coastal waters as a hand collection fishery while wading or diving. Three species of abalone are allowed to be caught. Roe’s abalone (Haliotis roei) are generally collected while wading from the shore in accessible nearshore reef complexes along the West and South Coast Bioregions. Greenlip abalone (H. laevigata) and Brownlip abalone (H. conicopora) are collected while wading (including snorkelling and freediving) and diving (using compressed air) predominantly along the South Coast Bioregion.

Recreational fishing for the three abalone species is licensed and highly regulated, especially in the Western Zone (which …

West Coast Demersal Scalefish Resource Recovery Support Package: 2024-25 Report, Department Of Primary Industries And Regional Development, Western Australia

Fisheries Published Reports

The West Coast Demersal Scalefish Resource (WCDSR) includes over 100 species in inshore (20–250 m deep) and offshore ( > 250 m) demersal habitats of the West Coast Bioregion. These species are caught by charter, commercial and recreational fishers. The WCDSR is in recovery and managed under a 20-year recovery plan (2010–2030). DPIRD tracks recovery progress through scientific stock assessments of indicator species (snapper, WA dhufish, and baldchin groper) every 3 years. The 2021 WCDSR stock assessment showed limited recovery and additional management action was required. In December 2022, the Minister for Fisheries announced commercial and recreational (including charter) sector management …

Comparison Of Pcr-Based Methods For The Detection Of Canned Tuna Species, Chloe P. Castanon, Denise Hernandez, Akshay N. Khetrapal, Rosalee S. Hellberg

Food Science Faculty Articles and Research

Canned tuna is susceptible to mislabeling due to its high consumer demand, complex global supply chains, and range of prices. DNA barcoding of a short fragment of the mitochondrial control region (CR), termed the CR mini-barcode, has been established as an effective method for tuna species identification. However, the high level of DNA degradation in canned tuna products reduces the effectiveness of this method. Therefore, this study aimed to compare CR mini-barcoding to targeted (i.e., real-time or multiplex) PCR-based methods to determine the most effective approach for canned tuna species identification. DNA was extracted in duplicate from 24 canned tuna …

Evaluation Of Dietary Additives On Yellowtail Kingfish (Seriola Lalandi) Gut And Skin Health And Disease Resistance Against Photobacterium Damselae Subsp. Damselae, Md Reaz Chaklader, Lindsey Woolley, Chelsea Woods, Frances Stephens, Richard Smullen, Gavin Partridge

Fisheries Research Articles

The present study evaluated the effectiveness of five dietary additives in improving growth performance, gut and skin health and disease resistance against Photobacterium damselae subsp. damselae (Pdd) in yellowtail kingfish (YTK) (Seriola lalandi). The additives were top-coated onto a commercial diet. The five additives evaluated were brewer’s yeast (BY), a yeast-based mannan oligosaccharide (MOS), a polyphenol product, a monoglyceride product and a combination of MOS and a superoxide dismutase (SOD) product. The monoglyceride and polyphenol products were trialled at both a low and high inclusion level. Diets were fed to YTK in triplicate tanks for 55 days. The …

Resource Assessment Report No. 5: West Coast Deep Sea Crustacean Resource 2024 Assessment, Emma-Jade Tuffley, Simon De Lestang

Resource Assessment Reports

The West Coast Deep Sea Crustacean resource consists of crystal crab (snow) (Chaceon albus), champagne crab (spiny) (Hypothalassia acerba) and giant crab (Pseudocarcinus gigas). The resource is mainly accessed by the commercial West Coast Deep Sea Crustacean Managed Fishery (WCDSCMF), which primarily targets crystal crabs. The West Coast Rock Lobster Managed Fishery (WCRLMF) also retains a small amount of champagne crabs as byproduct of deep-water rock lobster fishing. The WCDSCMF is a pot-based fishery using baited pots operated in a long-line formation in shelf edge waters ( > 150 m in depth) off the West …

Resource Assessment Report No. 3: Gascoyne Demersal Scalefish Resource 2024 Assessment, Emily A. Fisher, Rachel Marks, Sybrand A. Hesp, Ainslie Denham, Gary Jackson, David V. Fairclough

Resource Assessment Reports

The Gascoyne Demersal Scalefish Resource (GDSR) comprises over 80 species inhabiting inshore (20-250 m deep) and offshore ( > 250 m deep) waters in the Gascoyne Coast Bioregion (GCB; south of Onslow to north of Kalbarri). The GDSR is primarily targeted by commercial, charter and recreational boat-based line fishers. Snapper and Goldband Snapper are the indicator species selected for monitoring and assessing the status of the inshore suite of the GDSR, while Ruby Snapper and Greybanded Grouper are the indicators for the offshore suite.

Periodic assessments of GDSR indicator species demonstrated that historical fishing of Snapper led to stocks being below …

Resource Assessment Report No. 2: West Coast Demersal Scalefish Resource 2025 Assessment, Emily A. Fisher, David V. Fairclough, Elaine Lek, Jeremy Briggs, Sybrand Alex Hesp, Ainslie Denham

Resource Assessment Reports

The West Coast Demersal Scalefish Resource (WCDSR) comprises over 100 species inhabiting inshore (20-250 m deep) and offshore ( > 250 m deep) waters of the West Coast Bioregion (WCB; north of Kalbarri to east of Augusta). The WCDSR is primarily targeted by commercial, charter and recreational boat-based line fishers, including the commercial West Coast Demersal Scalefish (Interim) Managed Fishery (WCDSIMF). Indicator species selected for monitoring and assessing the status of the inshore suite of the WCDSR include Snapper, WA Dhufish and Baldchin Groper, while indicators for the offshore suite include Hapuku, Bass Groper and Blue-eye Trevalla.

The WCDSR is more …

Fisheries Occasional Publication No. 149 - Economic Contribution Of Wild-Catch Fishing In Western Australia, 2024: Beyond Gross Value Of Production, Dipesh Maharjan, Vilaphonh Xayavong, Ben Fraser, Rebecca Thomas

Fisheries Occasional Publications

The wild-catch fishing industry plays a significant role in Western Australia’s economy, particularly in regional communities. This report summarises the economic contribution of the commercial wild-catch fishing sector in 2024, based on REMPLAN’s input-output (I-O) modelling methodology and DPIRD data and analysis. This report focuses on key economic indicators including total economic output, gross value added (GVA), and employment (FTEs).

Key findings:

• Total Economic Output of the wild-catch fishing industry is $1.22 billion (total value of goods and services produced, including intermediate inputs)
• Gross Value Added (GVA) of the wild-catch fishing industry is $487 million (value of profit, wages, salaries …

A Pestel-Swot Matrix Analysis Of Sustainable Aquafeed Sector: A Case Of Kenya's Fish Feed Sector, Esther Magondu, Lucy Njogu, Kevin Ouko, Jimmy B. Mboya, Mavindu Muthoka, Rodrigue Yossa, Jonathan Munguti, Mary A. Opiyo, Menaga Meenakshisundaram, Chrysantus M. Tanga, Kevin Obiero

All Peer-Reviewed Publications

Global demand for seafood continues to rise, positioning aquaculture as a critical pathway for improving food security, nutrition, and rural livelihoods. In Kenya, the aquaculture sector remains constrained by structural challenges, with fish feed accounting for 60%–70% of production costs and limiting sectoral growth, particularly for smallholder farmers. This review critically analyzes Kenya's fish feed sector through an integrated PESTEL-SWOT framework, drawing on a scoping review of academic literature, policy reports, and sector development studies. The paper highlights key macro-level drivers, including fragmented policy implementation, dependency on imported ingredients, and climate-related risks, and connects these with internal industry dynamics such …

Resource Assessment Report No. 4: North Coast Demersal Scalefish Resource - Kimberley 2025 Assessment, Fabian Trinnie, Rubie Evans-Powell, Ainslie Denham, Sybrand A. Hesp, Corey Wakefield, Craig L. Skepper, Brett Crisafulli, Stephen J. Newman

Resource Assessment Reports

The North Coast Demersal Scalefish Resource (NCDSR) comprises ecological suites of tropical demersal fish species that occur predominantly in inshore waters (20–250 m deep) and offshore waters ( > 250 m deep) of the North Coast Bioregion (NCB). More than 60 demersal species are landed by fisheries operating in the Kimberley and Pilbara regions of the NCB each year, including high-value snappers (Lutjanidae), groupers (Epinephelidae), and emperors (Lethrinidae). As outlined in the NCDSR Harvest Strategy (DPIRD, 2017), the Kimberley resource is currently monitored through annual reviews of total removals and catch rate trends of indicator species, as well as periodic (every …

Comparison Of Gonad Development Between Wild And Hatchery-Bred Silver Therapon Leiopotherapon Plumbeus (Teleostei: Terapontidae) During An Annual Reproductive Cycle, Frolan A. Aya, Samantha Ally V. Bismonte, Mary Jane P. Sayco, Luis Maria B. Garcia

The Philippine Agricultural Scientist

This study compared gonad development between wild-sourced and hatchery-bred silver therapon Leiopotherapon plumbeus. Wild fish from the east bay area of Laguna de Bay, Philippines, and hatchery-bred stocks grown to adult size in outdoor tanks were sampled, and somatic condition, gonad histology, gonadosomatic index (GSI), gut index (GI), and hepatosomatic index (HSI) were assessed during the annual reproductive cycle. Hatcherybred fish condition was generally better than that of wild-sourced fish as a consequence of readily available food resources and environmental conditions. Hatchery-bred male GSIs were significantly higher than in wild male fish in November to February, coinciding with low water …

A Comparison Of Diving Behavior Of Goose-Beaked And Dense-Beaked Whales From Tagging Studies In Multiple Ocean Basins, Jay Barlow, Robin W. Baird, Janelle Badger, Gregory S. Schorr, Erin A. Falcone, Shannon N. Coates, Peter L. Tyack, Andrew J. Read, Leigh S. Hickmott, John W. Durban, Diane Claridge, Natacha Aguilar De Soto, Daniel Miranda Gonzalez, Fleur Visser, Machiel G. Oudejans, Stacy L. De Ruiter, David A. Sweeney, Brenda K. Rone, Stephanie L. Watwood

University Faculty Publications and Creative Works

Studies of cetacean diving behavior in multiple locations in different ocean basins allow for an assessment of variability within and among populations. We examine foraging dive behaviors of goose-beaked whales (Ziphius cavirostris) and dense-beaked whales (Mesoplodon densirostris) using data from 132 tagged whales in seven locations in the Pacific and Atlantic Oceans and the Mediterranean Sea. Acoustic recording tags are used to identify foraging dives by the presence of echolocation. For other tag types, foraging dives are identified based on maximum dive depth. Five parameters are used to characterize foraging dives: maximum dive depth, foraging dive duration, dive cycle duration, …

The Efficacy Of Rosemary Oil And Microencapsulated Essential Oils On Zeuxapta Seriolae Mitigation In Yellowtail Kingfish, Seriola Lalandi, Md Reaz Chaklader, Lindsey Woolley, Ross Woodward-Williams, Richard Smullen, Gavin J. Partridge

Fisheries Research Articles

Two additives, rosemary oil and a commercial herbal product (HP; AROTEC-G) containing garlic essential oil, carvacrol and thymol were investigated for their potential to reduce the parasitic burden in yellowtail kingfish (YTK; Seriola lalandi) infected with Zeuxapta seriolae. Naturally infected fish were fed diets supplemented with either 2.5 mL.kg−1 rosemary oil or two concentrations of HP (5 and 10 g.kg−1) for 20 days. At 10 and 20 days, the effect of the diets on parasite abundance was evaluated. Feed intake and growth were similar across treatments (p > 0.05). By day 10, both rosemary oil and HP significantly …

Successful Artificial Incubation And Juvenile-Rearing Of Dropped Eggs Of A Critically Endangered Freshwater Crayfish (Cherax Tenuimanus), Rodney Duffy Dr., Blaine Hodgson, Amber Quinn, Marcus Newman

Fisheries Research Articles

One-third of the world’s freshwater crayfish species face extinction risk, necessitating extreme and urgent conservation measures such as captive rearing. Little information exists on these measures for most threatened species. The hairy marron, Cherax tenuimanus (Parastacidae), is a critically endangered freshwater crayfish endemic to the Margaret River in south-western Western Australia. C. tenuimanus is being rapidly replaced by the smooth marron, Cherax cainii, a translocated congener, causing its progressive decline in range, and now it faces imminent extinction in the wild. Attempts at captive breeding have resulted in few occurrences of egg laying of C. tenuimanus, which ended in complete …