There's a fight brewing in the Pacific about toxic algae, climate change, and crabs. It has the commercial crab industry squaring off against Big Oil. So for our latest Verge Science video, I took some motion-sickness meds and hopped on a boat to find out what's really threatening commercial crabbing and what can be done about it.
就太平洋地区的毒藻类、气候变化和螃蟹问题,争论一触即发。商品蟹行业与石油巨头(Big Oil)正相持不下。所以,为拍摄Verge杂志的最新一期科学视频,我吃了点晕船药,登上一艘轮船去探索威胁商品蟹的真正原因,以及我们可以做些什么。
At the heart of this fight is a neurotoxin called domoic acid, which causes something called amnesic shellfish poisoning. The symptoms can range from stomach problems, confusion, short-term memory loss, seizures, and even death. For the past four years, elevated levels of the toxin have forced California's commercial crab fishery to stay closed for weeks to months past the usual opening day until the levels drop.
这场争论主要围绕一种叫做软骨藻酸的神经毒素展开,这种毒素会引起记忆丧失性贝毒。主要症状包括:胃痛、精神错乱、短期记忆丧失、癫痫,甚至死亡。过去四年中,该毒素水平升高,迫使加利福尼亚州的商品蟹渔业延迟开业期(短则数周,长则数月),直至毒素水平下降。
Domoic acid is produced by algae that bloom regularly along the Pacific coast. These blooms aren't always dangerous. There's some combination of nutrients, light, and, perhaps most importantly, warm water that can create a toxic soup. The toxin travels up the food chain from filter-feeding shellfish to creatures like crabs, marine mammals, and, rarely, to humans. To keep the food supply safe, state officials close fisheries when levels get too high.
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