TY - JOUR
T1 - Specificity of systemically released cotton volatiles as attractants for specialist and generalist parasitic wasps
AU - Röse, Ursula S.R.
AU - Joe Lewis, W.
AU - Tumlinson, James H.
N1 - Funding Information:
Acknowledgments—The authorsare grateful to A. T. Proveauxfor analysis of volatile samples by mass spectroscopy,to M. M. Brennan for technical assistance, to V. Chew for statisticaladvice, to T. Green for providing us with parasitoids,and to the Delta and Pineland Company (Hollandala, Mississippi) for donation of the seeds. We thank Heather J. McAuslane and Peter J. Landolt for their helpful comments concerning the initial manuscript. This research was supported by a grant from the National Research Initiative Competitive Grants Program, USDA, No. 94-37302-0460 (to J.H.T. and W.J.L.) and the Gottlieb Daimler-und Karl Benz-Stiftung in Ladenburg, Germany (to U.S.R.R.).
PY - 1998
Y1 - 1998
N2 - Cotton plants under herbivore attack release volatile semiochemicals that attract natural enemies of the herbivores to the damaged plant. The volatiles released in response to herbivory are not only released from the damaged leaves but from the entire cotton plant. We found that cotton plants that released myrcene, (Z)-3-hexenyl acetate, (E)-β-ocimene, linalool, (E)-4,8-dimethyl-1,3,7-nonatriene, (E)-β-farnesene, and (E, E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene systemically from undamaged leaves of caterpillar dammed plants were atractive to the generalist parasitoid Cotesia marginiventris and the specialist parasitoid Microplitis croceipes. Plants from which the caterpillar damaged leaves were removed and that released those compounds systemically were significantly preferred over undamaged control plants in two-choice experiments in a flight tunnel. Artificially damaged cotton plants that released green leafy volatiles and constitutive terpenoids were less attractive for M. croceipes and C. marginiventris. Only C. marginiventris preferred artificially damaged plants over undamaged control plants, whereas M. croceipes showed no preference. The apparent lack of specificity of systemically released compounds in response to different herbivores feeding on the lower leaves is discussed.
AB - Cotton plants under herbivore attack release volatile semiochemicals that attract natural enemies of the herbivores to the damaged plant. The volatiles released in response to herbivory are not only released from the damaged leaves but from the entire cotton plant. We found that cotton plants that released myrcene, (Z)-3-hexenyl acetate, (E)-β-ocimene, linalool, (E)-4,8-dimethyl-1,3,7-nonatriene, (E)-β-farnesene, and (E, E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene systemically from undamaged leaves of caterpillar dammed plants were atractive to the generalist parasitoid Cotesia marginiventris and the specialist parasitoid Microplitis croceipes. Plants from which the caterpillar damaged leaves were removed and that released those compounds systemically were significantly preferred over undamaged control plants in two-choice experiments in a flight tunnel. Artificially damaged cotton plants that released green leafy volatiles and constitutive terpenoids were less attractive for M. croceipes and C. marginiventris. Only C. marginiventris preferred artificially damaged plants over undamaged control plants, whereas M. croceipes showed no preference. The apparent lack of specificity of systemically released compounds in response to different herbivores feeding on the lower leaves is discussed.
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U2 - 10.1023/A:1022584409323
DO - 10.1023/A:1022584409323
M3 - Article
AN - SCOPUS:6844258180
VL - 24
SP - 303
EP - 319
JO - Journal of Chemical Ecology
JF - Journal of Chemical Ecology
SN - 0098-0331
IS - 2
ER -