caa a22 4500 469098392 CHVBK 20180323133038.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF00317814 doi (NATIONALLICENCE)springer-10.1007/BF00317814 Rank Nathan Department of Zoology, University of California-Davis, 95616, Davis, CA, USA aut Host plant preference based on salicylate chemistry in a willow leaf beetle ( Chrysomela aeneicollis ) [Elektronische Daten] [Nathan Rank] Summary: Chrysomela aeneicollis (Coleoptera: Chrysomelidae) uses salicin from its host plant (Salix spp.) to produce a defensive secretion, salicylaldehyde. Because it requires salicin for this secretion, I predicted that C. aeneicollis should be attracted to willows which possess salicin and other salicylates. To test this prediction, I determined the host-plant preferences of C. aeneicollis among four potential hosts which occur in the Sierra Nevada range of eastern California. These species have very different salicylate chemistries but do not differ in nutritional quality for C. aeneicollis. In oviposition-preference tests, gravid females showed no preference between a salicylate-poor species, S. lutea, and a salicylate-rich species, S. orestera. However in feeding-choice tests, both larvae and adults preferred S. orestera over S. lutea. This preference was not affected by the species on which the larvae were reared. In other feeding tests, adults preferred S. orestera over two medium-salicylate species, S. boothi and S. geyeriana, regardless of which host species they had been feeding on in nature. In a final feeding test, adults were stimulated to feed by salicin itself. In nature, the relative abundances of C. aeneicollis adults and egg clutches among these species correspond to the adult feeding preference in the laboratory. Additionally, multiple regression analyses showed that adult abundance was not related to among-clone differences in leaf toughness or nutritional quality, but rather to salicin content and plant size. Thus for C. aeneicollis, both laboratory and field results demonstrate a preference for salicylate-rich willows which is partly responsible for the increased level of attack on them. Springer-Verlag, 1992 Chrysomelidae nationallicence Salix nationallicence Salicin nationallicence Herbivore feeding preference nationallicence Host-plant choice nationallicence Oecologia Springer-Verlag 90/1(1992-04-01), 95-101 0029-8549 90:1<95 1992 90 442 https://doi.org/10.1007/BF00317814 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317814 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Rank Nathan Department of Zoology, University of California-Davis, 95616, Davis, CA, USA aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 90/1(1992-04-01), 95-101 0029-8549 90:1<95 1992 90 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer