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VOA科学技术2024--Algae Blamed for Sickening California Sea Lions

时间:2024-08-19 09:07来源:互联网 提供网友:nan   字体: [ ]
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A California wildlife organization says it has been rescuing sick sea lions in recent weeks showing signs of algae1 poisoning.

On August 1, the Santa Barbara-based Channel Islands Marine2 & Wildlife Institute said teams had rescued at least 23 animals. The U.S. Vandenberg Space Force Base recently released photos on social media of sea lions being taken from one of its beaches.

The institute said that since July 26, it had received numerous reports daily of sick lions along a 250-kilometer stretch of coastline in Santa Barbara and Ventura counties.

The group said in a statement the sea creatures were found to be suffering from the effects of domoic acid, a poison that can harm the brain and heart. The release of the acid in a large ocean event is known as an algae bloom.

The poison is produced by microscopic3 algae eaten by shellfish or small fish. Those shellfish or fish are often then eaten by sea lions, dolphins or birds. The algae can also sicken humans.

Among the signs of sickness experienced by affected4 sea lions are unusual head movements, disorientation, foaming5 at the mouth and seizures6.

In a message published on Facebook August 4, the institute said the poisoning event was "heating up," with new cases of sick sea lions still appearing at multiple beaches. It explained that rescue teams first try to get the animals in a net so they can be transported for treatment and then returned to the sea.

The U.S. National Oceanic and Atmospheric7 Administration (NOAA) says poisoning events linked to domoic acid are common along the California coast. Experts said the latest poisoning event seems to mostly be affecting adult female sea lions.

Last year, an especially severe poisoning event killed hundreds of sea lions and a number of dolphins during the first weeks of June.

Words in This Story

algae - n. a plant with no stem or leaves that grows in or near water

bloom - v. to become densely8 populated with microorganisms such as algae

disorient - v. to make someone confused or unsure


点击收听单词发音收听单词发音  

1 algae tK6yW     
n.水藻,海藻
参考例句:
  • Most algae live in water.多数藻类生长在水中。
  • Algae grow and spread quickly in the lake.湖中水藻滋蔓。
2 marine 77Izo     
adj.海的;海生的;航海的;海事的;n.水兵
参考例句:
  • Marine creatures are those which live in the sea. 海洋生物是生存在海里的生物。
  • When the war broke out,he volunteered for the Marine Corps.战争爆发时,他自愿参加了海军陆战队。
3 microscopic nDrxq     
adj.微小的,细微的,极小的,显微的
参考例句:
  • It's impossible to read his microscopic handwriting.不可能看清他那极小的书写字迹。
  • A plant's lungs are the microscopic pores in its leaves.植物的肺就是其叶片上微细的气孔。
4 affected TzUzg0     
adj.不自然的,假装的
参考例句:
  • She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
  • His manners are affected.他的态度不自然。
5 foaming 08d4476ae4071ba83dfdbdb73d41cae6     
adj.布满泡沫的;发泡
参考例句:
  • He looked like a madman, foaming at the mouth. 他口吐白沫,看上去像个疯子。 来自《简明英汉词典》
  • He is foaming at the mouth about the committee's decision. 他正为委员会的决定大发其火。 来自《简明英汉词典》
6 seizures d68658a6ccfd246a0e750fdc12689d94     
n.起获( seizure的名词复数 );没收;充公;起获的赃物
参考例句:
  • Seizures of illicit drugs have increased by 30% this year. 今年违禁药品的扣押增长了30%。 来自《简明英汉词典》
  • Other causes of unconsciousness predisposing to aspiration lung abscess are convulsive seizures. 造成吸入性肺脓肿昏迷的其他原因,有惊厥发作。 来自辞典例句
7 atmospheric 6eayR     
adj.大气的,空气的;大气层的;大气所引起的
参考例句:
  • Sea surface temperatures and atmospheric circulation are strongly coupled.海洋表面温度与大气环流是密切相关的。
  • Clouds return radiant energy to the surface primarily via the atmospheric window.云主要通过大气窗区向地表辐射能量。
8 densely rutzrg     
ad.密集地;浓厚地
参考例句:
  • A grove of trees shadowed the house densely. 树丛把这幢房子遮蔽得很密实。
  • We passed through miles of densely wooded country. 我们穿过好几英里茂密的林地。
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