The pine processionary moth, Taumetopoea pityocampa (Denis & Schiffermüller) (Lepidoptera:
Thaumetopoeidae) is one of the most dentrimental insects found in the forestry areas of Turkey and World. Many
methods have been used to control this pest up to now. But, the problem is still going on. The objective of this study
is to determine larvicidal effects of essential oils obtained from Artemisia santanicum L. and Artemisia absinthium
L. on the L1, L2, L3, L4 and L5 stages of T. pityocampa in laboratory conditions. In order to test the toxicity of the
oils on larval stages of T. pityocampa, 10 larvae were placed in each Petri dishes (9 × 1.5 cm). After that each
dose of essential oils (10, 15 and 20 μL petri-1) were sprayed on all the instar larvae of T. pityocampa in the petri
dishes, 4-10 g amounts fresh needles of (red pine) Pinus brutia Ten. were placed to feed the larvae. Petri dishes
were covered with parafilm paper by closing. All tests carried out at 25ºC (±1), 65% (±5) relative humidity and
14/10 h light/dark photoperiod in laboratory conditions. The sterile water + etanol as control and Dimilin@ 25 WP,
a commercial insecticide (%25 Diflubenzuron) as positive control were used. All the tests were made in triplicate.
After the exposure, mortality of the larvae was recorded at 12, 24, 36 and 48 h. The toxicity degrees were found
to be variable ranging from 6.66 to 100% mortality. The results show that two plant essential oils have larvicidal
effect on the five instar larvae of T. pityocampa in comparison with controls and can be used to control against T.
pityocampa larvae populations.
Primary Language | Turkish |
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Subjects | Agricultural Engineering |
Journal Section | Bitki Koruma / Plant Protection |
Authors | |
Publication Date | September 30, 2018 |
Submission Date | February 9, 2018 |
Acceptance Date | May 10, 2018 |
Published in Issue | Year 2018 |