Inhibition of egg development by hypercarbia and hypoxia in almond moth, Ephestia cautella (Walker, 1863) (Lepidoptera: Pyralidae)
Abstract
Hypercarbia-induced delay in the development of eggs was investigated in almond moth, Ephestia cautella (Walker, 1863) (Lepidoptera: Pyralidae), using two controlled atmospheres (CAs), 85% CO2 + 3% O2 (balance N2) and 95% CO2 + 1% O2 (balance N2) between 2012 and 2014 in Stored Products Pests Laboratory, Agricultural Faculty, Ankara University. Eggs of E. cautella (1-3 day-old) were exposed to both CAs for a wide a range of exposure periods of up to 104 h at three temperatures of 20±1, 25±1 and 30±1°C at 65±5% RH. In general, both CAs caused delay in egg development by 1 to 8 d. Inhibitory effects were more pronounced at lower temperatures. A maximum delay of 8 d was recorded at 20°C for the three-day-old eggs exposed to 95% CO2 plus 1% O2 for 88 h. Short exposure periods caused short term delays in development. Four h exposure caused 1d delay in three-day-old eggs exposed to 95% CO2 plus 1% O2 at 25°C. In practice, total egg hatch including delays lasted 5 d at 30°C, 8 d at 25°C, and 12 d at 20°C, which must be taken into account for successful CAs applications.
Keywords
Kaynakça
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Ayrıntılar
Birincil Dil
İngilizce
Konular
-
Bölüm
Araştırma Makalesi
Yayımlanma Tarihi
15 Mart 2017
Gönderilme Tarihi
7 Ekim 2016
Kabul Tarihi
-
Yayımlandığı Sayı
Yıl 2017 Cilt: 41 Sayı: 1
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