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cover of episode Who's the daddy? There isn't one.

Who's the daddy? There isn't one.

2024/5/8
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Unexplainable
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B
Britt Pinkerton
C
Christine Judgen
W
Warren Booth
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Warren Booth：通过多年研究蛇类孤雌生殖的案例，发现孤雌生殖后代的存活率和繁殖能力普遍较低，基因多样性不足，因此他认为孤雌生殖并非一种有效的繁殖策略，而更可能是一种祖先遗传下来的、对物种生存既无益也无害的残留特征。他以自己饲养的孤雌生殖蟒蛇为例，详细描述了这些后代的生理缺陷和繁殖问题，支持了他的观点。 Christine Judgen：基于对鲨鱼的研究，她提出孤雌生殖可能是某些物种在雄性稀缺的情况下，为延续基因而采取的一种“权宜之计”或“救命稻草”。她认为，虽然大多数孤雌生殖胚胎无法存活，但只要有一部分后代能够存活并繁衍，就能达到延续物种基因的目的。她认为孤雌生殖的发生可能与动物的迁徙和栖息地环境有关，在自然环境中，孤雌生殖可能比在人工饲养环境中更为常见。 Britt Pinkerton：作为节目的主持人，她总结了两种观点，并指出目前关于孤雌生殖的研究还处于初步阶段，两种观点都有其合理性，需要更多的研究来证实。她强调了对野生动物孤雌生殖案例研究的必要性，以更全面地了解这一现象。

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Shownotes Transcript

A snake. A shark. They got pregnant with no male involved. In fact, scientists are finding more and more species that can reproduce on their own. What’s going on?

Note: We mention that a stingray named Charlotte might be pregnant via parthenogenesis. It has since been announced that she was not pregnant, but ill.

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