Abstract：
:Olfactory responses of the cereal stemborer parasitoid Cotesia sesamiae to volatiles emitted by gramineous host and nonhost plants of the stemborers were studied in a Y-tube olfactometer. The host plants were maize (Zea mays) and sorghum (Sorghum bicolor), while the nonhost plant was molasses grass (Melinis minutiflora). In single-choice tests, females of C. sesamiae chose volatiles from infested and uninfested host plants and molasses grass over volatiles from the control (soil). In dual-choice tests, the wasp preferred volatiles from infested host plants to those from uninfested host plants. There was no discrimination between molasses grass volatiles and those of uninfested maize, uninfested sorghum, or infested maize. The wasp preferred sorghum volatiles over maize. Combining uninfested maize or sorghum with molasses grass did not make volatiles from the combination more attractive as compared to only uninfested host plants. Infested maize alone was as attractive as when combined with molasses grass. Infested sorghum was preferred over its combination with molasses grass. Local growth conditions of the molasses grasses influenced attractiveness to the parasitoids. Volatiles from Thika molasses grass were attractive, while those from Mbita molasses grass were not. Growing the Thika molasses grass in Mbita rendered it unattractive and vice versa with the Mbita molasses grass. This is a case of the same genotype expressing different phenotypes due to environmental factors.
journal_name
J Chem Ecoljournal_title
Journal of chemical ecologyauthors
Gohole LS,Overholt WA,Khan ZR,Pickett JA,Vet LEdoi
10.1023/a:1022828921763keywords:
subject
Has Abstractpub_date
2003-03-01 00:00:00pages
731-45issue
3eissn
0098-0331issn
1573-1561journal_volume
29pub_type
杂志文章abstract：:The bioactivity of 22 essential oils from aromatic and medicinal plants was tested uponAcanthoscelides obtectus Say (Coleoptera, Bruchidae), a pest of kidney bean (Phaseolus vulgaris L.). The insecticidal effect was evaluated by determination of 24- and 48-hr LC50 and LC50 (from 1.50 mg/ dm(3) to more than 1000 mg/dm(...
journal_title：Journal of chemical ecology
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更新日期：1987-08-01 00:00:00
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doi：10.1007/BF01012360
更新日期：1986-06-01 00:00:00
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更新日期：1991-03-01 00:00:00
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pub_type： 杂志文章
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更新日期：1986-04-01 00:00:00
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journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01014828
更新日期：1989-04-01 00:00:00
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pub_type： 杂志文章
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更新日期：2012-05-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/BF01041857
更新日期：1986-09-01 00:00:00
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更新日期：2005-10-01 00:00:00
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pub_type： 杂志文章
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更新日期：2019-12-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/BF00988039
更新日期：1983-02-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/BF02036190
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更新日期：1995-06-01 00:00:00
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更新日期：1987-04-01 00:00:00
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更新日期：1986-08-01 00:00:00
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更新日期：1983-08-01 00:00:00
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更新日期：2008-10-01 00:00:00
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更新日期：1994-04-01 00:00:00
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更新日期：1986-01-01 00:00:00
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journal_title：Journal of chemical ecology
pub_type： 杂志文章
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更新日期：1993-07-01 00:00:00
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更新日期：1991-01-01 00:00:00
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pub_type： 杂志文章
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更新日期：1984-03-01 00:00:00
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journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-012-0194-7
更新日期：2012-11-01 00:00:00
