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| Content Provider | Springer Nature Link |
|---|---|
| Author | Arab, Alberto Trigo, José Roberto Lourenção, André Luiz Peixoto, Aiane Michele Ramos, Fernanda Bento, José Mauricio Simões |
| Copyright Year | 2007 |
| Abstract | The behavioral responses of the potato tuberworm moth Phthorimaea operculella and the polyphagous predator Orius insidiosus to volatiles emanating from exposed tubers were studied by four-arm olfactometer bioassays. Mated females of P. operculella distinguished volatiles released by intact potato tubers from volatiles damaged mechanically or by conspecific larvae. Volatiles from intact potato tubers were attractive to them. On the other hand, unmated females of P. operculella did not respond to tuber volatiles. Adults of O. insidiosus were attracted to volatiles from tubers damaged by P. operculella larvae, but did not respond to intact or mechanically damaged tubers. Methyl jasmonate (MeJA) was the only compound identified from the headspace of potato tubers (GC-MS of direct headspace sampling). The amount varied with the type of induction, being 0.001 ± 0.0003 ng g$^{−1}$ in tissues of intact fresh tubers, 0.002 ± 0.0007 ng g$^{−1}$ in mechanically damaged tubers, and showing a six- to tenfold increase in P. operculella damaged tubers (0.090 ± 0.006 ng g$^{−1}$). Behavioral bioassays with synthetic MeJA confirmed that the response of the insects is dependent on MeJA concentration. Mated females of P. operculella showed the highest response at 0.001 ng g$^{−1}$ (concentration released by intact tubers), whereas O. insidiosus showed the highest response, between 0.01 and 0.05 ng g$^{−1}$, which is close to the concentration released by P. operculella damaged tubers. Based on these results, we postulate that P. operculella and O. insidiosus have adapted their responses to plant volatiles differently, enabling them to locate suitable hosts or prey. |
| Starting Page | 1845 |
| Ending Page | 1855 |
| Page Count | 11 |
| File Format | |
| ISSN | 00980331 |
| Journal | Journal of Chemical Ecology |
| Volume Number | 33 |
| Issue Number | 10 |
| e-ISSN | 15731561 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2007-09-21 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Solanum tuberosum Plant volatiles Induced response Methyl jasmonate Solanaceae Tritrophic interaction Phthorimaea operculella Orius insidiosus Physical Chemistry Agriculture Ecology Biological Microscopy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Biochemistry Ecology, Evolution, Behavior and Systematics |
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