Fate of paralytic shellfish poisoning toxins in purple clam Hiatula rostrata, in outdoor culture and laboratory culture

• Published in: Marine pollution bulletin Vol. 44; no. 8; pp. 733 - 738
• Main Authors: Chen, Chih Yu, Chou, Hong Nong
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.08.2002; Elsevier
• Subjects: Adaptation, Physiological; Alexandrium minutum; Animal aquaculture; Animal productions; Animal, plant and microbial ecology; Animals; Applied ecology; Aquaculture; Biological and medical sciences; Bivalvia - physiology; Dinoflagellates; Dinoflagellida - chemistry; Ecotoxicology, biological effects of pollution; Food Contamination; Fundamental and applied biological sciences. Psychology; Hiatula rostrata; Invertebrate aquaculture; Marine and brackish environment; Marine Toxins - pharmacokinetics; Marine Toxins - toxicity; Mollusca; Outdoor culture; Paralytic shellfish poisoning toxins; Purple clams; Reproducibility of Results; Tissue Distribution; Taiwan; Purple clams; Dinoflagellates; Outdoor culture; Paralytic shellfish poisoning toxins; Laboratory study; Edible mollusc; Toxicity; Algae; Paralytic shellfish poisoning; Marine environment; Breeding pond; Toxin; Dinophyta; Bivalvia; Plant origin; Water pollution; Invertebrata; Mollusca; Thallophyta; Aquaculture
• ISSN: 0025-326X; 1879-3363
• DOI: 10.1016/S0025-326X(01)00307-1

Purple clams ( Hiatula rostrata Lighttoot) accumulate paralytic shellfish poisoning (PSP) toxins produced by a toxic strain of the dinoflagellate Alexandrium minutum Halim. The results confirm the data of our previous study concerning the muscle and siphon that were not showing a gradual rise in toxicity when shellfish accumulated more A. minutum. However, muscle and siphon are intermittently toxic both in exposure and depuration period in laboratory cultured purple clams. PSP toxins were detected in outdoor cultured purple clams, whereas no A. minutum were found in the culture pond during most of the survey time. The outdoor cultured purple clams need longer time to decrease toxicity to allowable levels than laboratory cultured purple clams. It was shown that laboratory data may not predict times over which pond-cultured purple clams may prove toxic to consumers.