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http://dx.doi.org/10.5656/KSAE.2017.11.0.037

Morphological Characteristics and Ecology of Locusta migratoria (Orthoptera: Acrididae) in Jeonnam Province  

Choi, Duck-Soo (Environment-friendly Agricultural Research Institute, JARES)
Ma, Kyeong-Cheul (Environment-friendly Agricultural Research Institute, JARES)
Kim, Hyo-Jeong (Environment-friendly Agricultural Research Institute, JARES)
Lee, Jin-Hee (Environment-friendly Agricultural Research Institute, JARES)
Oh, Sang-A (Environment-friendly Agricultural Research Institute, JARES)
Publication Information
Korean journal of applied entomology / v.56, no.4, 2017 , pp. 421-426 More about this Journal
Abstract
These experiments were conducted to investigate the morphological characteristics, occurrence ecology, host preference, and oviposition of Locusta migratoria to create a forecasting manual in preparation for outbreaks of this species. The sex ratio (female:male) of 274 adult of L. migratoria which occurred naturally in the Muan region of Jeollanam-do was 18.2 : 81.8, 60.9% individuals were of the green type and 39.1% were of the brown type. Body length and body weight were 6.5 cm and 2.8 g for females and 5.0 cm and 1.5 g for males, respectively; body size did not differ between differently colored individuals. Spawning activity in the field was observed from late August to late October. Eggs laid between late September and early October hatched in late May the following year. Female adults fed 3.5 g of corn leaf and male adult was 1.6 g for a day. The host preference of L. migratoria was in the order corn > foxtail millet > millet > silver grass > rice, and preference for silver grass and rice was very low. Pure sand was most favorable for the spawning of L. migratoria, and the cumulative amount of hatching was higher when the soil moisture content was higher after spawning began.
Keywords
Locusta migratoria; Morphological characteristics; Occurrence ecology; Host preference; Oviposition;
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