Comparative effectiveness of different modified atmospheres enriched with carbon dioxide and nitrogen on larval instars of almond moth Ephestia cautella (Walker) (Lepidoptera: Pyralidae)

2014 ◽  
Vol 59 ◽  
pp. 314-319 ◽  
Author(s):  
Mohamed Y. Hashem ◽  
Sayeda S. Ahmed ◽  
Mohsen A. El-Mohandes ◽  
Abd Rabou E. Hussain ◽  
Saad M. Ghazy
Keyword(s):  
Carbon Dioxide ◽  
Comparative Effectiveness ◽  
Ephestia Cautella ◽  
Larval Instars ◽  
Modified Atmospheres ◽  
Lepidoptera Pyralidae ◽  
Almond Moth

The effect of nitrogen and carbon dioxide on eggs of Ephestia cautella (Walker) and E. kuehniella Zeller (Lepidoptera: Pyralidae)

1980 ◽  
Vol 70 (2) ◽  
pp. 293-298 ◽  
Author(s):  
C. H. Bell ◽  
E. C. Spratt ◽  
D. J. Mitchell
Keyword(s):  
Carbon Dioxide ◽  
Toxic Effect ◽  
Ephestia Cautella ◽  
Percentage Survival ◽  
Lepidoptera Pyralidae

AbstractSome eggs of Ephestia cautella (Wlk.) and E. kuehniella Zell. hatched after exposure to near 100% atmospheres of nitrogen (N2) or carbon dioxide (CO2) for up to 5 days at 15°C, 3 days at 20°C and 1 day at 25°C. The most tolerant age at the start of treatment at 25°C in E. cautella was 7–24 h after oviposition for CO2 and 7–30 h for N2. Generally, hatch was lower in CO2 than in N2 whatever the exposure, and lower for E. kuehniella than for E. cautella. Considerably more eggs of E. cautella aged 30 and 42 h hatched after exposure to N2 than to CO2, showing a toxic effect of CO2 in the absence of oxygen. Eggs of both species treated with either CO2 or N2 hatched 1–2 days later than controls, regardless of age or percentage survival.

scholarly journals Test of vitality of fungus Beauveria bassiana (Bals.) Vuill. Eggs and larvae of moth Figs Ephestia cautella (Walk.) (Lepidoptera: Pyralidae)

2018 ◽  
Vol 28 (3) ◽  
pp. 55
Author(s):  
Maan Abdul-Azeez Al-Salihi
Keyword(s):  
Beauveria Bassiana ◽  
Larval Instar ◽  
Aqueous Suspension ◽  
Ephestia Cautella ◽  
Hatching Rate ◽  
Larval Instars ◽  
Fourth Larval Instar ◽  
Lepidoptera Pyralidae ◽  
Eggs And Larvae ◽  
Fungus Beauveria Bassiana

AbstractThe results showed the effect of different concentrations (1x 104, 1x 106, 1x 108) Spore / ml aqueous suspension of commercial isolation of the fungus Beauveria bassiana (Bals.) Vuill. on eggs and second and fourth larval instars of the moth figs Ephestia cautella (Walk.) Under laboratory conditions. The lowest hatching rate at 1 x 108 spore / ml was 15.3% after 5 days of treatment and was 60.7% at a concentration of 1 x 104 spore / ml. The rest of the larvae were followed until they reached the stage of the pupa and the adult. The mortality for the second larval instar were highest at 1 x 108 spore / ml after 7 days of treatment reaching 85.22%, The lowest rate is 5.6% after 2 days of treatment at 1 x 104 spore / ml concentration. The concentration of 1x 108 spore / ml had the highest effect after four days of treatment on the fourth larval instar the mortality was 89.6%. The lowest percentage pupation was 52.7%, and the lowest adults emerging was 50.2%.

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