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Effects of Seven Plant Essential Oils on the Growth, Development and Feeding Behavior of the Wingless Aphis gossypii Glover
Cotton aphid Glover damages plants such as cotton directly by feeding on leaves and indirectly by transmitting viruses and excreting honeydew, which interferes with photosynthesis. The control of is still dominated by the frequent use of insecticides, which leads to a gradual increase in pesticide r...
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| Published in: | Plants (Basel) 2024-03, Vol.13 (7), p.916 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | Cotton aphid
Glover damages plants such as cotton directly by feeding on leaves and indirectly by transmitting viruses and excreting honeydew, which interferes with photosynthesis. The control of
is still dominated by the frequent use of insecticides, which leads to a gradual increase in pesticide resistance in
. Research is therefore needed on non-pesticide controls. In this study, seven plant essential oils (EOs) of
L.,
L.,
L.,
L.,
L.,
L., and
Mill. were examined as potential controls for
. We used life tables and electrical penetration graphs (EPG) to explore the effects of these EOs on the growth, development, and feeding behavior of
, followed by a study of effects of the EOs on honeydew secretion by
as a measure of their antifeedant activity. We found that the EOs of
,
,
and
significantly extended the pre-adult developmental period. Also, adult longevity, number of oviposition days, and total fecundity of
treated with the EOs of
or
were all significantly reduced.
treated with the EOs of
,
, or
showed significant reductions in their net reproductive rate (
), intrinsic rate of increase (
), and finite rate of increase (
), and significant increases in mean generation time (
). In terms of their effects on the feeding behavior of
, all seven EOs significantly reduced the total duration of phloem feeding (E2 waves), the number of phloem-feeding bouts, and the proportion of time spent in secretion of saliva into phloem sieve elements (E1 waves) and phloem feeding (E2). The total duration and number of E1 waves (saliva secretion) were significantly reduced by the EOs of
,
, and
. For C waves (probing in non-vascular tissues), the total duration spent in this behavior was significantly increased by the EOs of
,
, and
, but the number of such probing events was increased only by
EO. The EOs of
,
, and
significantly increased the total duration of ingestion of xylem sap (G waves), while the total time of mechanical difficulty in stylet penetration (F waves) was increased by
. The total duration and number of the non-probing events (Np waves) were significantly increased by EOs of
and
. After treatment with all seven of these EOs, the area covered by honeydew was significantly reduced compared with the control. Studies have analyzed that EOs of
,
and
were most effective, followed by the EOs of
and
, and finally the EOs of
and
. In the present study, the EOs of
,
and
were found to have potential for the development as antifeedants of
, and these data provide a |
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| ISSN: | 2223-7747 2223-7747 |
| DOI: | 10.3390/plants13070916 |