cover of episode What are eels?
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C
Chris Bowser
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David de Santana
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Jane Lindholm
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Chris Bowser: 阐述了鳗鱼作为鱼类的生物学特征，包括其鳃、鳍和细小鳞片等。详细描述了鳗鱼幼体（玻璃鳗）的形态特征、生存策略以及随生长发育而发生的颜色变化。他还解释了鳗鱼的降河洄游特性，以及它们漫长的生命周期和一生只繁殖一次的独特繁殖方式。此外，他还谈到了鳗鱼种群数量下降的原因，包括过度捕捞、污染和水坝建设等人类活动的影响，并强调了保护鳗鱼及其栖息地的重要性。 Jane Lindholm: 介绍了美国鳗鱼的幼体从大西洋到北美东海岸的长途迁徙，以及鳗鱼生命周期中的一些未解之谜，例如其确切的产卵地和完整的生命周期细节。她还讨论了鳗鱼的降河洄游特性，并将其与溯河洄游鱼类进行了比较，介绍了相关的专业术语。此外，她还介绍了鳗鱼计数项目，该项目旨在评估鳗鱼数量并促进社区参与科学研究，并强调了幼年鳗鱼在河流食物网中的重要作用。

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What are eels? And why are some eels electric? We head to Poughkeepsie, New York to learn about eels with Chris Bowser, Hudson River estuary educator with the New York Department of Environmental Conservation. Plus we learn about electric eels. Electric eels have captured the imagination of many people, but they’re not actually considered eels by the scientific community. They’re a type of knife fish, more closely related to catfish and carp. But they are electric! So we’ll tackle why they’re electric and how they create electricity. David de Santana, of the Smithsonian Museum of Natural History, tells us what it’s like to study electric eels in the Amazon. 

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