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RISS 인기검색어
- 검색키워드
- 저자 : Su-Huan Niu (검색결과 2 건)
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Hong-Xue Jiang,Su-Huan Niu,Xiao-Wei Li,Xiao-Chen Zhang,Ji-Nian Feng 한국응용곤충학회 2015 Journal of Asia-Pacific Entomology Vol.18 No.4
Anaphothrips obscurus (Müller) is a cosmopolitan pest feeding on cereal crops and grasses. This species exhibits wing polyphenism. Differences in the life history traits of female macropterous and brachypterous A. obscurus were compared in the laboratory for this study. Experiments were performed in climate chambers set at 20 and 25 ± 1 °C, 60 ± 10% RH under a 16 L:8D photoperiod. The duration of total pre-adult stage, adult preoviposition period and total pre-oviposition period of macropterous morphs were significantly longer than in the brachypterous morphs both at 20 and 25 °C. No significant differenceswere found in adult longevity, survival rate or total fecundity between the twowingmorphs,while early fecunditywas significantly higher for brachypterous females compared with that for macropterous females at two temperatures.
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Hong-Xue Jiang,Xiao-Chen Zhang,Su-Huan Niu,Ji-Nian Feng 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.4
Anaphothrips obscurus is a cosmopolitan pest feeding on cereals and other grasses. The effects of constant temperatures on the biology of A. obscurus are notwell known. Laboratory studieswere conducted to assess the effects of temperature on the development, survival, longevity, fecundity and population parameter of A. obscurus at six constant temperatures (15, 20, 25, 30, 32, 35 °C). The hatchability was the lowest at 15 °C, the highest at 25 °C and no eggs hatched at 35 °C. Developmental rates increased linearly as the temperature increased. The lower developmental threshold temperaturewas 10.6 °C and 200 degree-dayswere required to complete development from egg to adult. Adult longevity decreased with increasing temperature, and ranged from 68.87 d at 15 °C to 16.41 d at 32 °C. The highest total fecundity occurred at 20 °Cwith 162 eggs per female. The temperature-dependent total fecundity, age-specific oviposition rate, and age-specific survival rate models were described. The intrinsic rate of increase (rm) was significantly higher at 30 and 32 °C (0.239 and 0.250) than at other temperatures. This study suggests that optimal developmental and reproductive temperatures for A. obscurus ranges between 25 and 30 °C and this may help this species adapt to warmer areas and widen its distribution and potential for damage in response to global warming. These findings will also be useful in developing monitoring programs, population dynamic models, and timing of control measures for A. obscurus.
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