Prediction of on-site depuration of paralytic shellfish poisoning toxins accumulated in the scallop Patinopecten yessoensis of Ofunato Bay, Japan

Kaga, Shinnosuke; Satō, Shigeru; Kaga, Yoshimasa; Naiki, Kimiaki; Watanabe, Shiho; Yamada, Yuma; Ogata, Toru

doi:10.1007/s12562-015-0891-6

Cited by 6 publications

(5 citation statements)

References 12 publications

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“…The fastest current velocities were found at the more interior, more protected fishing zone of Ovalada Island, where faster field detoxification rates (k = −0.067) were detected as well. This is in contrast to the findings of Kaga et al [31] in their study of the scallop Patinopecten yessoensis, in which lower maximum toxicity concentrations did not lead to faster detoxification. The reasons for this difference are unknown, but environmental variables such as the circulation pattern, temperature, and salinity may affect detoxification rates, mainly during the early rapid phase [32,33].…”

Section: Discussioncontrasting

confidence: 99%

Modelling the Spatial and Temporal Dynamics of Paralytic Shellfish Toxins (PST) at Different Scales: Implications for Research and Management

Díaz

Molinet

Seguel

et al. 2022

Toxins

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Harmful algal blooms, in particular recurrent blooms of the dinoflagellate Alexandrium catenella, associated with paralytic shellfish poisoning (PSP), frequently limit commercial shellfish harvests, resulting in serious socio-economic consequences. Although the PSP-inducing species that threaten the most vulnerable commercial species of shellfish are very patchy and spatially heterogeneous in their distribution, the spatial and temporal scales of their effects have largely been ignored in monitoring programs and by researchers. In this study, we examined the spatial and temporal dynamics of PSP toxicity in the clam (Ameghinomya antiqua) in two fishing grounds in southern Chile (Ovalada Island and Low Bay). During the summer of 2009, both were affected by an intense toxic bloom of A. catenella (up to 1.1 × 106 cells L−1). Generalized linear models were used to assess the potential influence of different environmental variables on the field detoxification rates of PSP toxins over a period of 12 months. This was achieved using a four parameter exponential decay model to fit and compare field detoxification rates per sampling site. The results show differences in the spatial variability and temporal dynamics of PSP toxicity, given that greater toxicities (+10-fold) and faster detoxification (20% faster) are observed at the Ovalada Island site, the less oceanic zone, and where higher amounts of clam are annually produced. Our observations support the relevance of considering different spatial and temporal scales to obtain more accurate assessments of PSP accumulation and detoxification dynamics and to improve the efficacy of fisheries management after toxic events.

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Section: Discussioncontrasting

confidence: 99%

Modelling the Spatial and Temporal Dynamics of Paralytic Shellfish Toxins (PST) at Different Scales: Implications for Research and Management

Díaz

Molinet

Seguel

et al. 2022

Toxins

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“…Although the highest levels of PST were consistently found in the viscera or digestive gland, toxicity levels above the FDA limit were also found in rock scallop adductor muscles. High persistent PST toxicity in scallop species (Shumway et al 1988, Beitler 1991, Kaga et al 2015) and other bivalves has been reported previously (Bricelj & Shumway 1998), including long-term toxicity of butter clams, Saxidomus gigantea (Beitler & Liston 1990, Kibler et al 2022. Paralytic shellfish toxins in rock scallop adductor muscle persisted in some individuals above the FDA limit for up to 4 mo during the field exposures (Figs.…”

Section: Paralytic Shellfish Toxinsmentioning

confidence: 77%

Biotoxin Uptake, Retention, and Depuration Trends in Purple-Hinged Rock Scallops, Crassadoma gigantea (Gray 1825)

Houle,

Bill,

Christy

et al. 2023

Journal of Shellfish Research

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“…Thus, A. tamarense is the more important causative PSP Alexandrium species in this bay. Incidence of cyst formation for A. tamarense has been reported as 20% (Anderson et al 1984), 30% (Ichimi et al 2001), 23.8 ± 5.1 % at 14°C (Nagai et al 2008) and 17% (Kaga 2010). These cyst production numbers are significantly higher than for other photosynthetic gonyaulacacean dinoflagellates, including A. catenella 1.2-2.1% (Matsuoka & Takeuchi 1995), Gonyaulax digitale (Pouchet) Kofoid (= Spiniferites bentori (Rossignol) Wall et Dale) 5.9% (Wall & Dale 1968), Alexandrium tamiyavanichii Balech 6.2 ± 1.1% in (Nagai et al 2008), and a heterotrophic cyst-forming dinoflagellate (Protoperidinium oblongum (Aurivillius) Parke et Dodge 1.4% (Wall & Dale 1968).…”

Section: -1 Higher Cyst Forming Capability Of Alexandrium Tamarensementioning

confidence: 99%

“…During the huge bloom of A. tamarense in May to June of 2011 after the Great East Japan Earthquake tsunami in 2011, accumulation of PSP toxins through the ingestion of A. tamarense was studied in the blue mussel Mytilus galloprovincialis Lamarck 1819, Yesso giant scallops and other species in Ofunato Bay. On May 13 th of 2013, the toxin concentration in scallops of Ofunato Bay was recorded as 4,647 MU/g DG, which was the maximum value for the bay (Kaga et al 2012(Kaga et al , 2013.…”

Section: History Of Alexandrium Blooms and Paralytic Shellfish Poison...mentioning

confidence: 99%

Repercussions of the Great East Japan Earthquake tsunami on ellipsoidal Alexandrium cysts (Dinophyceae) in Ofunato Bay, Japan

Matsuoka

Ikeda

Kaga³

et al. 2018

Marine Environmental Research

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Shellfish aquaculture in Ofunato Bay, Northeast Japan, was seriously damaged by a tsunami generated by the Great East Japan Earthquake, March 11th, 2011, accompanied by paralytic shellfish poisoning (PSP) outbreaks caused by Alexandrium tamarense (Dinophyceae). To understand longer future trends of PSP, an investigation was made of the historical occurrence and causes of Alexandrium outbreaks after the tsunami. Vertical distributions of Alexandrium cysts in two sediment-cores from Ofunato Bay revealed that the sediments above ca. 25 cm were eroded, re-suspended and re-deposited, and they included unusually abundant Alexandrium cysts. This abundance of cysts was due to re-deposition of older sediments by the tsunami. The first Ofunato Bay PSP incident was in 1961 after the Chilean Earthquake tsunami and was probably caused by similar unusual blooms of Alexandrium germinated from older sediments as the Great East Japan tsunami, together with nutrient enrichment because of population increase at the start of shellfish aquaculture.

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Prediction of on-site depuration of paralytic shellfish poisoning toxins accumulated in the scallop Patinopecten yessoensis of Ofunato Bay, Japan

Cited by 6 publications

References 12 publications

Modelling the Spatial and Temporal Dynamics of Paralytic Shellfish Toxins (PST) at Different Scales: Implications for Research and Management

Modelling the Spatial and Temporal Dynamics of Paralytic Shellfish Toxins (PST) at Different Scales: Implications for Research and Management

Biotoxin Uptake, Retention, and Depuration Trends in Purple-Hinged Rock Scallops, Crassadoma gigantea (Gray 1825)

Repercussions of the Great East Japan Earthquake tsunami on ellipsoidal Alexandrium cysts (Dinophyceae) in Ofunato Bay, Japan

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