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Effects of the toxic dinoflagellate, Alexandrium pacificum, on the marine diatom, Chaetoceros muelleri, and mussel (Perna canaliculus) sperm and hemocytes.
Author
Greenhough H; Smith KF; Kenny NJ; Rolton A
Journal Title
Marine environmental research
Publication Year
2024
Topics
Summary
This study investigated the toxic mechanisms of the harmful algal bloom, Alexandrium pacificum, which poses a threat to green-lipped mussel (Perna canaliculus) farming in the Marlborough Sounds, New Zealand. In vitro bioassays on sperm, hemocytes, and a marine diatom revealed significant sperm mortality upon exposure to A. pacificum cells or fragments, and increased mortality of hemocytes and diatoms in cell-free treatments containing paralytic shellfish toxins (PSTs). These findings highlight the diverse toxic mechanisms of A. pacificum on co-occurring species in the environment.
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