Chrysomela

Compound 150, one of two isoxazolinones first found in the defensive secretion of chrysomelid beetles, Chrysomela tremulae, shows a UV spectrum... 

Leaf surface compounds provide important information about host-plant acceptability to coleopteran insects. Although the tortoise beetle, Cassida canaliculata, is only weakly attracted to odors from host plants, it shows strong preferences for host plants when additional contact cues are provided.64 The cottonwood leaf beetle, Chrysomela scripta, which is a pest of cottonwood, poplar, and willow, is stimulated to feed by leaf surface chemicals produced by a beetle-preferred poplar clone 65 The feeding stimulants have been isolated and identified as 1-docosanol, 1-tetracosanol, 1-hexacosanol, 1-octacosanol, 1-triacontanol, and... 

Cotton wood leaf beetle (Chrysomela scripta) Bt var. tenebrionis... 

V., Delplanque, A. and Jouanin, L. (1995). Toxicity to Chrysomela tremulae (Coleoptera Chrysomelidae) of transgenic poplars expressing a cysteine proteinase inhibitor. Mol. Breed. 1, 319-328. 

Randoux, T., j. C. Braekman, and D. Daloze, De novo biosynthesis of A -isoxazolin-5-one and 3-nitropropanoic acid derivatives in Chrysomela tremulae, Naturwissenschaften, 78, 313-314 (1991). 

Tarsi of Delia brassicae Tarsi of Chrysomela brunsvicensis... 

In a study of insect-plant relationships at Oak Ridge National Laboratory, Crossley (1963) utilized a field nuclear waste site containing Cs. Chrysomela knabi beetle larvae were collected on leaves from willow trees (Salix nigra) growing on White Oak Lake bed. This lake was formerly a low-level waste disposal site at the laboratory, and the sediments contained various radionuclides, including Cs. Consequently, the leaves of the willow tree contained Cs... 

Figure 57. Some results of a study on insect-plant relationships utilizing radioactive tracers, (a) Retention of s by an individual beetle (Chrysomela knabi). Third instar larva, pupa, and adult stages are shown, (b) Retention of Cs by a single grasshopper Melanoplus differentUdis. (c) Relationship of insect weight to biological half-life of cesium. From Crossley (1963).

Crossley, D. A., Jr. 1966. Radioisotope measurement of food consumption by a leaf beetle species, Chrysomela knabi Brown. Ecology 47(1) 1-8. 

Figure 9.19 The formation of the defensive secretion of Chrysomela tremulae from...

Figure 10.19 Two chrysomelid beetles (Phratora vitellinae and Chrysomela tremulaej produce salicyialdehyde as a defensive secretion.

Brilli, R, Cicciolo, R, Rrattoni, M. et al. (2009) Constitutive and herbivore-induced monoterpenes emitted by Populus x euroamericana leaves are key volatiles that orient Chrysomela populi beetles. Plant Cell Environ. 32,542. 

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