Plant exudates trigger leaf-trenching by cabbage loopers, Trichoplusia ni (Noctuidae)

  title={Plant exudates trigger leaf-trenching by cabbage loopers, Trichoplusia ni (Noctuidae)},
  author={David E. Dussourd},
Cabbage loopers, Trichoplusia ni, cut a narrow trench across leaves of plants that release exudate, then feed distal to the trench in an area of reduced exudation. The larvae do not normally trench plant species such as plantain, Plantago lanceolata, that lack exudate. To determine what cues elicit trenching, I reared larvae to the final instar on plantain, then applied test solutions to their mouthparts during feeding. Loopers that received latex from Lactuca serriola (Asteraceae) or phloem… CONTINUE READING


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