Effect of temperature on survival, development and reproduction of the predatory lacewing Dichochrysa prasina (Neuroptera: Chrysopidae) reared on Ephestia kuehniella eggs (Lepidoptera: Pyralidae) |
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Authors: | ML Pappas GD Broufas DS Koveos |
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Institution: | aAristotle University of Thessaloniki, School of Agriculture, Laboratory of Applied Zoology and Parasitology, 541 24 Thessaloniki, Greece;bDemocritus University of Thrace, Department of Agricultural Development, Pantazidou 193, 68 200 Orestiada, Greece |
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Abstract: | Preimaginal development and adult longevity and reproduction of Dichochrysa prasina Burmeister were studied at six constant temperatures (15, 20, 25, 27, 30 and 33 °C) and a photoperiod of 16:8 (L:D). Eggs of the flour moth Ephestia kuehniella (Zeller) were used as food throughout preimaginal development, whereas the adults of D. prasina fed on a liquid diet of water, yeast hydrolysate, sugar and honey. At the highest tested temperature of 33 °C no larvae completed their development. At the rest of the tested temperatures the egg to adult developmental period ranged from approximately 92 days at 15 °C to 25 days at 30 °C. Percentages of adult emergence ranged from 36% at 15 °C to 84% at 30 °C. Both adult longevity and fecundity were significantly affected by temperature and the intrinsic rate of increase (rm) reached its maximum value at 27 °C. These results could be useful for the establishment of a small scale rearing and mass production of D. prasina. |
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Keywords: | Dichochrysa prasina Ephestia kuehniella Temperature Development Reproduction Life table |
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