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烟草角虫的宿主识别是由宿主植物化合物介导的
M L del Campo1, C I Miles, F C Schroeder
1Department of Entomology, Cornell University, Ithaca, New York 14853, USA. moliva@binghamton.edu
Nature
|May 11, 2001
概括
蝶Manduca sexta的幼虫在食用宿主植物后发展出特定的食偏好. 这种专业化是由味觉受体对类固醇糖化物,印酸D的反应驱动的.
科学领域:
- 动物行为 动物行为
- 昆虫生理学 昆虫生理学
- 化学生态化学生态学
背景情况:
- 动物经常使用识别模板 (天生的或获得的) 来做决定.
- 蝶Manduca sexta的幼虫在初次接触自然宿主后表现出获得的食偏好.
研究的目的:
- 为了研究Manduca sexta幼虫诱导的食偏好背后的机制.
- 为了确定负责宿主植物特异性的特定化合物.
主要方法:
- 在天然宿主上食天真的Manduca sexta幼虫,以诱导偏好.
- 测试类固醇糖化物化物D对食偏好的影响.
- 测量对印酸D和其他植物化合物的味道受体反应.
主要成果:
- 在叶中发现的印酸D被认为是维持诱导食偏好所必需和足够的.
- 被宿主植物养的幼虫的味觉受体对印酸D的反应得到了增强.
- 这种增强的反应表明味觉受体对印酸D的调.
结论:
- 在Manduca sexta中诱导的养特异性至少部分由味觉受体调节到印第酸D.
- 类固醇甘油酸印酸D在这些幼虫的宿主植物选择中起着至关重要的作用.
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