Memis Kesdek

Muğla Sıtkı Koçman University

Saban Kordali

Atatürk University

Kerziban Coban

Muğla Sıtkı Koçman University

Ayse Usanmaz

Iğdır University

Sezai Ercisli

Atatürk University


The pine processionary moth, Taumetopoea pityocampa (Denis and Schiffermüller) is one of the most widespread defoliator insects found in the forest areas of Turkey.
Although different methods have been used to control this major forest pest up to now, the problem is still going on largely unsolved in the forest areas of Turkey. The objective
of this study was to determine larvicidal effects of extracts obtained from six different plant species, Achillea wilhelmsii C. Koch, Nepeta meyeri Benth., Satureja hortensis
L., Origanum onites L., O. rotundifolium Boiss., Tanacetum argyrophyllum (C. Koch) and on the 2nd, 3rd, and 4th instar larvae of T. pityocampa in laboratory conditions.Test the
toxicity of six plant extracts against to the 2nd, 3rd, and 4th instar larvae of T. pityocampa, 10 larvae of this insect with 15 gr amounts fresh needles (1 year old) of Pinus brutia were
placed to Petri dishes (9 × 1.5 cm deep). Each dose was dissolved in acetone and 0.25, 0.5 and 1 mg of the plant extracts found in 1 ml solution were sprayed on the 2nd, 3rd, and 4th
instar larvae of T. pityocampa in the Petri dishes, corresponding to 2.08, 4.16 and 8.33 mg·l-1 air concentrations. Petri dishes were covered with a lid. All tests carried out at
26ºC (±2), 60% (±5) relative humidity and 14/10 h light/dark photoperiod in laboratory conditions. When exposure, mortality of the larvae was after the determined at 24, 48 and
96 h. Petri dish applied with sterile water and acetone were used as control group. All the tests were made in triplicate. The results showed that six plant exracts have a larvicidal effect
on the 2nd, 3rd, and 4th instar larvae of T. pityocampa in comparison with controls. Therefore, these naturally occurring plant extracts could be useful for managing the larvae
populations of T. pityocampa.


plant extracts, Taumetopoea pityocampa, larvicidal effect, pine, mortality percentage

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Memis Kesdek 
Muğla Sıtkı Koçman University
Saban Kordali 
Atatürk University
Kerziban Coban 
Muğla Sıtkı Koçman University
Ayse Usanmaz 
Iğdır University
Sezai Ercisli 
Atatürk University



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