ISSN:
1432-1939
Keywords:
Lepidoptera
;
Salicaceae
;
Herbivory
;
Resource allocation
;
Chemical defense
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary The cottonwood tree, Populus deltoides, continues to produce leaves late into the growing season, exposing midseason herbivores to leaves of a wide range of maturity. Gypsy moth larvae preferred and grew best on the oldest cottonwood leaves and suffered higher mortality and 85% less growth when fed young, expanding leaves. Concentration of phenolics in the youngest leaves was 3 times that in the oldest leaves and was negatively correlated with caterpillar growth rate. The active phenolics were not identified; tannin was present but its concentration changed more with season than leaf age.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00378978
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