The effect of temperature on development of Thrips simplex rysanoptera: Thripidae) and it's distribution on gladiolus

• Main Authors: Tsun-Yi Huwang, 黃純儀
• Other Authors: Tsong Hong SU
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/25241080574982957324

碩士 === 國立中興大學 === 昆蟲學系 === 83 === efficeint of dispersion, Lloyd's mean crowding index 及Taylor power law等學說評估薊馬於田間之空間分布，結果無論使用何種指數， 均顯示唐菖蒲薊馬具有聚集分布之傾向。The development of Thrips simplex were observed at 4 different temperature:15,20,25 and 30℃.The results indicated that the developmental duration of eggs, larvae, prepupae and pupae decrease as the temperature increases.The minimun averagevelopmental durtion at 30℃ forthe stages were 3.3,1.4,2.4 anddays, respectively. The development rate(Y) of each stage is proportional to the temperature(X).The low development threshold and the thermal summation for each stage were 10.0℃,67.6DD,12.5℃,24.8DD,9.4℃,47.6DD,11.7℃,19.2 DD,8.1℃,46.5DD.Studies of egg hatching rates and motality of developmental period found thate hatching percentage at 15℃ was minimum with the average of 57.0﹪. The mortality at 15℃ for the stages of 1st larva(7.8﹪), 2nd larva(11.1﹪), prepupa(17.8﹪) and pupa(34.4﹪) were the highest among the 4 different temperatures. The result showed that the temperature 15℃ was the most unsuitable for Thrips simplex development among the 4 temperature. The pre-oviposition and oviposition under different temperatures of female which takes parthenogenesis or bisexual reproduction decreases as temperature incereaes. While the minimum pre-oviposition and oviposion period of virgin female at 30℃ were 2.0 and 15.0 days, the minimum pre-oviposition period and oviposition period of mated remale were 2.0and 14.5 days.The daily egg production increases as the temperature increases.There were no significantly differences between the eggs produced by a virgin female and a mated female at 15,20,25 and 30℃. The longevities of a virgin female and a mated female decrease as the temperature increases.The longevities(Y) of adults(virgin and mated) and temperature(X) were negative linear relationships.