MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, 87 Avenue Jean Monnet, 34200 Sète, France.
MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, 34095 Montpellier, France.
Toxins (Basel). 2022 Jun 10;14(6):401. doi: 10.3390/toxins14060401.
Pinnatoxins (PnTX) and Portimines (Prtn), two toxins produced by the benthic dinoflagellate , are known to be lethal to mice after intraperitoneal or oral administration. They are also known to accumulate in shellfish such as mussels and clams, but their effect on fish and the upper food chain remains unknown. In this work, juveniles of the fish (Mullet) were exposed to a strain of producing PnTX G and Prtn A. The fishes' viability and contamination were recorded at times interval. Results showed that juveniles were able to feed on and that their tissues could be contaminated by PnTX G and Prtn A without impact on fish viability. Furthermore, the microalgae temporary cysts survived and germinated after fish gut passage. This study showed the potential of to transfer PnTX and Prtn toxins to the upper food chain and to disseminate in environment.
短沟藻产生的派琴毒素（PnTX）和鲍玛毒素（Prtn），是两种已知的腹腔或口服后对老鼠具有致命性的底栖甲藻毒素。它们还会在贻贝和蛤蜊等贝类中积累，但它们对鱼类和上层食物链的影响仍不清楚。在这项工作中，幼鱼（鲻鱼）暴露于产生 PnTX G 和 Prtn A 的短沟藻菌株中。每隔一段时间记录鱼类的存活和污染情况。结果表明，幼鱼能够以 为食，并且它们的组织可能被 PnTX G 和 Prtn A 污染，而对鱼类的存活没有影响。此外，微藻的休眠孢囊在通过鱼肠道后存活并发芽。本研究表明短沟藻有可能将 PnTX 和 Prtn 毒素转移到上层食物链，并在环境中传播。
