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科學新知

科學新知. Speaker: 吳如蕙 Date:11/26/2010. Science 2010 Nov 19. Pea aphids, Acyrthosiphon pisum. The most destructive insect pests Relying on intracellular bacteria for survival & development Ladybird beetles  red Parasitoid wasps  green. maintain color variation

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科學新知

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  1. 科學新知 Speaker:吳如蕙 Date:11/26/2010

  2. Science 2010 Nov 19.

  3. Pea aphids, Acyrthosiphon pisum • The most destructive insect pests • Relying on intracellular bacteria for survival & development • Ladybird beetles red • Parasitoid wasps  green maintain color variation (gene controlled) http://en.wikipedia.org/wiki/Aphid

  4. Certain green aphids red nymphs green adults • Hamiltonellaor or Serratia-like organism  against parasitoid wasps (Oliver et al., 2003)

  5. Rickettsiella green color was positively correlated with the infection density of Rickettsiella

  6. Two major groups of pigment molecules: (1) yellow-red colors no significant difference (2) blue-green colors infected ＞ uninfected increase green-pigment production

  7. New role of endosymbionts in aphids • Previous studies tolerance to high temperature resistance against natural enemies • This study modified the body color of hosts influence prey-predator interactions

  8. Thanks for your attention

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