| In vitro: |
| Brain Research, 1988, 447(1):0-17. | | Integration of olfactory information in the Colorado potato beetle brain.[Reference: WebLink] | The processing of olfactory information in the Colorado potato beetle, Leptinotarsa decemlineata Say, was studied by recording responses of olfactory neurones intracellularly in the deutocerebrum.
METHODS AND RESULTS:
Response characteristics of neurones in this first relay station of the olfactory pathway were measured when the antennae were stimulated with five general green leaf volatiles, i.e. cis-3-hexen-1-ol, trans-2-hexenal, cis-3-hexenyl acetate, trans-2-hexen-1-ol and 1-hexanol. These compounds are part of the so-called green odour of potato, whose defined composition is essential for the beetle's host plant finding. The response spectra of deutocerebral neurones can be divided roughly into two classes: one class containing neurones which are not very specific for the tested compounds, and another class with highly specialized neurones.
CONCLUSIONS:
Their different responses to a potato leaf extract suggest two channels for the processing of olfactory information in the antennal lobe: one channel for the detection of the presence of green leaf odour components, and another one for an evaluation of the component ratios. | | Journal of tianjin normal university, 2017. | | EAG and behavioral responses of Asias halodendri to the volatiles of Vitis vinifera。[Reference: WebLink] | To develop the attractant with highly attractive activity to Asias halodendri adults,six volatiles of its host-plant Vitis vinifera were selected,i.e. 1-penten-3-ol,methyl linoleate,4-methyl-1-pentanol,trans-2-hexen-1-ol,ocimene and ethyl acetate.
METHODS AND RESULTS:
The former five kinds of compounds were adopted as single attractant,and were composed with ethyl acetate to make fourteen kinds of multicomponent formula with different component and proportion. In order to test the effect of these attractants on the adults of Asias halodendri,electroantennogram(EAG)and behavioral response experiments were employed on them. The results showed that,as for the EAG tests of female adults,only the single component 1-penten-3-ol showed higher attractive activity,and the difference compared with the control had statistic significance(P 0.05). In the behavioral response of female adults,the formula P1,P2,P3,P8 and trans-2-hexen-1-ol showed highly attractive activity.As for the EAG response of male adults,methyl linoleate,4-methyl-1-pentanol,1-penten-3-ol and P1 had attractive activity,but only the difference of methyl linoleate and 4-methyl-1-pentano compared with the control had statistic significance(P 0.05). In the tests of behavioral response of male adults,ocimene,4-methyl-1-pentanol,P1,P2 and P3 all had attractive activity,among which ocimene had the largest activity.
CONCLUSIONS:
Overall,as for the female adults of Asias halodendri,the multicomponent formulas had higher attractive activity,and as for the male adults,the single component had higher attrac-tive activity. |
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