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http://dx.doi.org/10.5656/KSAE.2021.04.0.014

Biological Traits of the Lesser Strawberry Aphid (Chaetosiphon minus) in Strawberry under Plastic Houses  

Kwon, Gi-Myon (Bio Utilization Institute)
Lee, Hyung-Keun (Industrial Insects Lab. Co. Ltd.)
Heo, Yu Ri (Department of Plant Medicine, Sunchon National University)
Hong, Ki-Jeong (Department of Plant Medicine, Sunchon National University)
Publication Information
Korean journal of applied entomology / v.60, no.2, 2021 , pp. 215-220 More about this Journal
Abstract
To establish the systematic biological control system for various insect pests in strawberry under plastic houses, we were investigated the biological traits of lesser strawberry aphid, Chaetosiphon minus (Forbes), as a target pest. The lesser strawberry aphid is adapted to low temperatures while examining the availability of and selecting useful natural enemies. The development, survivorship and reproduction of lesser strawberry aphid were evaluated at four constant temperatures (10, 15, 20, and 25℃). The developmental periods of the nymphal stages ranged from 41.7 d at 10℃ to 9.8 d at 25℃. The developmental threshold temperature and degree day of nymphal stages are 5.5℃ and 185 DD. The reproduction rate (R0) was higher at 20℃ (30.16) than at 25℃ (22.38). The 50 % survival rate and maximum longevity of adult females were 31 d and 59 d at 20℃, and 25 d and 36 d at 25℃, respectively. The average progeny per female was 35 at 20℃, and 26 at 25℃. We confirmed that compared to other strawberry aphids under plastic houses, the lesser strawberry aphid is more adapted to lower temperatures. It is, therefore, necessary to commercialize natural enemies such as syrphid flies with high activity at low temperatures.
Keywords
Chaetosiphon minus; developmental period; developmental threshold; degree day; strawberry;
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Times Cited By KSCI : 1  (Citation Analysis)
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