Safe Management of Shellfish and Harvest Waters

Rees, G. Wyn

doi:10.2166/9781780405797

Cited by 24 publications

(27 citation statements)

References 263 publications

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“…As a result, cultivated shellfish are predominantly exported as the local market is insufficient and not commanding a high price in comparison to the buoyant export markets (Habrey & Evans ). This is contrary to the report from WHO () who stated international trades in bivalves is very much regionalized with many regions unable to penetrate distant markets outside their province mainly due to technical barriers such as strict regulations on imports of bivalve products. This is a distinct advantage for NI shellfish production which is able to access major markets due to their strong reputation for high regulatory standards and disease‐free status (DAERA, ).…”

Section: Barriers and Facilitators To Shellfish Production In Northercontrasting

confidence: 77%

Barriers and facilitators to shellfish cultivation

Fox

Moore

Dean

et al. 2019

Reviews in Aquaculture

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A literature review was conducted to determine the barriers and facilitators to shellfish cultivation using Northern Ireland (NI) as a case study. This review included 23 papers, published in 14 journals, indexed in the Web of Science database. The eligibility criteria included (i) peer‐reviewed articles or websites from key government or agency stakeholders in the aquaculture supply chain; (ii) had a primary focus on shellfish production; and (iii) made reference to the United Kingdom, Ireland or NI. Six key categories were identified as impacting the aquaculture sector: Economic, Environmental, Technical, Welfare, Political and Consumer factors. The most commonly cited codes within these categories included regulations, management decisions, environmental welfare, weather conditions, consumer needs and water quality. Within the scientific literature, the study designs were variable and NI‐specific data were limited. However, the recommendations were relatively consistent. More evidence‐based data collection is needed to better establish the status of the aquaculture industry in this region and to provide more effective management practices and recommendations. The information gained from this review allowed the identification and discussion of the challenges and opportunities for shellfish production worldwide; an insight into production in NI; and preliminary recommendations for improving this industry. As a result, the review offers important foundations and lessons for other aquaculture production units across the world to assess their industry.

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Section: Barriers and Facilitators To Shellfish Production In Northercontrasting

confidence: 77%

Barriers and facilitators to shellfish cultivation

Fox

Moore

Dean

et al. 2019

Reviews in Aquaculture

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“…Depuration is one the most effective method of reducing bacteria in shellfishes requiring less time of purification than relaying which took at least 2 months [21]. The effectiveness of depuration process depends on the design of the set-up, species [46], physiological condition [44], initial concentration of bacteria [21], water temperature and salinity in the tanks [20]. Every unique design of depuration set-up requires appropriate purification condition such as flow rate and density that is suitable for the design.…”

Section: Effectiveness Of the Recirculating Depuration Systemmentioning

confidence: 99%

Evaluation of a Small Scale UV-treated Recirculating Depuration System for Oysters (<i>Crassostrea iredalei</i>)

Sorio¹,

Peralta²

2017

AJFST

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Oysters are filter-feeding organisms that tend to concentrate any suspended materials in its surrounding water including pathogenic bacteria. Since most oysters are eaten as raw or slightly cooked, they can act as vectors for pathogenic microorganisms and thus impose health risks to consumers. Depuration is one of the methods to reduce pathogenic bacteria in oysters to make it safe for sale and consumption. This study was designed to evaluate the effectiveness of the small scale UV-treated recirculating depuration system manipulating different parameters such as water flow rate and tank density. It aims to determine the effect of this UV-treated recirculating depuration system in reducing pathogenic bacteria in oysters such as E. coli, Salmonella, Vibrio cholera and Vibrio parahaemolyticus, and with the survival rate and meat yield of oysters. The experimental results showed that the depuration system was effective in reducing E. coli at different water flow rate (15L/min, 10L/min and 5L/min), in all density level (2 oysters/L, 4 oysters/L and 6 oysters/L). However, for Vibrio parahaemolyticus and Vibrio cholera reduction, only water flow rate of 15L/min at density level of 2 oysters/L and 4 oysters/L revealed to be effective. The survival of the oysters was high in treatments with a density of 2 oysters/ L. The meat yield revealed to have no significant difference (P<0.01) between treatments with water flow rates. In general, treatment with water flow rate of 15 L/min in combination with 2 oysters/L density showed most promise results on all analysis.

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“…Korea is the fourth largest producer of shellfish, accounting for almost 2.8% of the global harvest (Lee et al, 2011). Korean shellfish products are exported to mainly the USA, China, Japan, and the EU (Pawiro, 2010;Rees et al, 2010). Jinhae Bay is an important shellfish growing area in Korea, because it produces various shellfish, such as mussels, oysters, ark shells, short-neck clams, butter clams, soft-shell clams, and comb pen shells.…”

Section: Hplc Analysismentioning

confidence: 99%

Variation and Profile of Paralytic Shellfish Poisoning Toxins in Jinhae Bay, Korea

Mok¹,

Song²,

Lee³

et al. 2013

Fisheries and aquatic sciences

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To understand critical aspects of paralytic shellfish poisoning (PSP) in a chief area of bivalve production in Korea, seasonal variation in PSP toxins in bivalves collected from Jinhae Bay, Korea in 2009 was surveyed by the pre-column high-performance liquid chromatography oxidation method. We also confirmed the profiles of major bivalves such as oysters Crassostrea gigas and mussels Mytilus galloprovincialis in Jinhae Bay. PSP toxins in the bivalves showed remarkable seasonal variation. PSP toxin levels were detected from April to May in 2009, and the highest total toxin levels at all stations were recorded in May. The major toxins in bivalves were gonyautoxin [GTX] 1&4 and C 1&2; in oysters GTX 2&3 were also detected as major components. GTX 1&4, which showed the highest PSP toxin levels at each station, accounted for the highest proportions of toxin components in mussels and oysters (64.5-71.3% and 41.4-42.4%, respectively). It was also confirmed that the highest toxicity (in μg saxitoxin [STX] eq/g) was derived from GTX 1&4. The highest total toxicity (in μg STX eq/g) was approximately 2-8-fold higher in mussels than in oysters collected from the same station. PSP toxin levels in bivalves differed significantly according to the sample collection station. However, the profiles of toxins in the bivalves did not show significant differences during the survey period according to sample collection station. This study shows that PSP toxin levels in some samples from Jinhae Bay were above the regulatory limit in Korea during a specific period in spring.

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Safe Management of Shellfish and Harvest Waters

Cited by 24 publications

References 263 publications

Barriers and facilitators to shellfish cultivation

Barriers and facilitators to shellfish cultivation

Evaluation of a Small Scale UV-treated Recirculating Depuration System for Oysters (<i>Crassostrea iredalei</i>)

Variation and Profile of Paralytic Shellfish Poisoning Toxins in Jinhae Bay, Korea

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