Spatiotemporal distribution of paralytic shellfish poisoning (PSP) toxins in shellfish from Argentine Patagonian coast
Harmful algal blooms (HABs) have been recorded in the Chubut Province, Argentina, since 1980, mainly associated with the occurrence of paralytic shellfish poisoning (PSP) toxins produced by dinoflagellates of the genus Alexandrium. PSP events in this area impact on fisheries management and are also...
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Elsevier
2019-06-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844019355999 |
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| author | Leilén Gracia Villalobos Norma H. Santinelli Alicia V. Sastre Germán Marino Gastón O. Almandoz |
| author_facet | Leilén Gracia Villalobos Norma H. Santinelli Alicia V. Sastre Germán Marino Gastón O. Almandoz |
| author_sort | Leilén Gracia Villalobos |
| collection | DOAJ |
| description | Harmful algal blooms (HABs) have been recorded in the Chubut Province, Argentina, since 1980, mainly associated with the occurrence of paralytic shellfish poisoning (PSP) toxins produced by dinoflagellates of the genus Alexandrium. PSP events in this area impact on fisheries management and are also responsible for severe human intoxications by contaminated shellfish. Within the framework of a HAB monitoring program carried out at several coastal sites along the Chubut Province, we analyzed spatiotemporal patterns of PSP toxicity in shellfish during 2000–2011. The highest frequency of mouse bioassays exceeding the regulatory limit for human consumption was detected in spring and summer, with average values of up to ≈70% and 50%, respectively. By contrast, a lower percentage of positive bioassays (2–8%) or no toxicity at all was usually detected during autumn and winter. The most intense PSP events were usually observed between November and January, with values of up to 4,000 μg STX eq 100 g−1, and showed a marked interannual variability both in their magnitude and location. In addition, a severe PSP outbreak was recorded during autumn, 2009, at Camarones Bay, with toxicity values of up to 14,000 μg STX eq 100 g−1. The scallop Aequipecten tehuelchus showed significantly higher toxicity values compared to other shellfish species in SJG and SMG, suggesting a lower detoxification capacity. Our results contribute to the understanding of HABs dynamics on the Argentine Patagonian coast. |
| first_indexed | 2024-04-12T01:02:17Z |
| format | Article |
| id | doaj.art-7d14406d865f476a8e430e56f3c0c340 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-04-12T01:02:17Z |
| publishDate | 2019-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-7d14406d865f476a8e430e56f3c0c3402022-12-22T03:54:23ZengElsevierHeliyon2405-84402019-06-0156e01979Spatiotemporal distribution of paralytic shellfish poisoning (PSP) toxins in shellfish from Argentine Patagonian coastLeilén Gracia Villalobos0Norma H. Santinelli1Alicia V. Sastre2Germán Marino3Gastón O. Almandoz4Centro para el Estudio de Sistemas Marinos (CESIMAR-CONICET), Boulevard Brown 2915 (U9120ACD), Puerto Madryn, Argentina; Corresponding author.Instituto de Investigación de Hidrobiología, Facultad de Ciencias Naturales y Ciencias de la Salud, Universidad Nacional de la Patagonia San Juan Bosco, Gales 48 (U9100CKN), Trelew, ArgentinaInstituto de Investigación de Hidrobiología, Facultad de Ciencias Naturales y Ciencias de la Salud, Universidad Nacional de la Patagonia San Juan Bosco, Gales 48 (U9100CKN), Trelew, ArgentinaDirección Provincial de Salud Ambiental, Ministerio de Salud de la Provincia del Chubut, Ricardo Berwin 226 (U9100CXF), Trelew, ArgentinaDivisión Ficología, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n (B1900FWA), La Plata, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917 (C1033AAV), Buenos Aires, ArgentinaHarmful algal blooms (HABs) have been recorded in the Chubut Province, Argentina, since 1980, mainly associated with the occurrence of paralytic shellfish poisoning (PSP) toxins produced by dinoflagellates of the genus Alexandrium. PSP events in this area impact on fisheries management and are also responsible for severe human intoxications by contaminated shellfish. Within the framework of a HAB monitoring program carried out at several coastal sites along the Chubut Province, we analyzed spatiotemporal patterns of PSP toxicity in shellfish during 2000–2011. The highest frequency of mouse bioassays exceeding the regulatory limit for human consumption was detected in spring and summer, with average values of up to ≈70% and 50%, respectively. By contrast, a lower percentage of positive bioassays (2–8%) or no toxicity at all was usually detected during autumn and winter. The most intense PSP events were usually observed between November and January, with values of up to 4,000 μg STX eq 100 g−1, and showed a marked interannual variability both in their magnitude and location. In addition, a severe PSP outbreak was recorded during autumn, 2009, at Camarones Bay, with toxicity values of up to 14,000 μg STX eq 100 g−1. The scallop Aequipecten tehuelchus showed significantly higher toxicity values compared to other shellfish species in SJG and SMG, suggesting a lower detoxification capacity. Our results contribute to the understanding of HABs dynamics on the Argentine Patagonian coast.http://www.sciencedirect.com/science/article/pii/S2405844019355999Environmental scienceAquatic ecologyMarine biologyEnvironmental risk assessmentEnvironmental toxicologyToxicology |
| spellingShingle | Leilén Gracia Villalobos Norma H. Santinelli Alicia V. Sastre Germán Marino Gastón O. Almandoz Spatiotemporal distribution of paralytic shellfish poisoning (PSP) toxins in shellfish from Argentine Patagonian coast Heliyon Environmental science Aquatic ecology Marine biology Environmental risk assessment Environmental toxicology Toxicology |
| title | Spatiotemporal distribution of paralytic shellfish poisoning (PSP) toxins in shellfish from Argentine Patagonian coast |
| title_full | Spatiotemporal distribution of paralytic shellfish poisoning (PSP) toxins in shellfish from Argentine Patagonian coast |
| title_fullStr | Spatiotemporal distribution of paralytic shellfish poisoning (PSP) toxins in shellfish from Argentine Patagonian coast |
| title_full_unstemmed | Spatiotemporal distribution of paralytic shellfish poisoning (PSP) toxins in shellfish from Argentine Patagonian coast |
| title_short | Spatiotemporal distribution of paralytic shellfish poisoning (PSP) toxins in shellfish from Argentine Patagonian coast |
| title_sort | spatiotemporal distribution of paralytic shellfish poisoning psp toxins in shellfish from argentine patagonian coast |
| topic | Environmental science Aquatic ecology Marine biology Environmental risk assessment Environmental toxicology Toxicology |
| url | http://www.sciencedirect.com/science/article/pii/S2405844019355999 |
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