This paper is concerned with the bionomics and demography of Pediculaster fletchmanni Wicht （Acari： Siteroptidae） under controlled conditions （20 ± l, 22 ± 1 and 25 ± 1℃, 70% ± 5% relative hum...This paper is concerned with the bionomics and demography of Pediculaster fletchmanni Wicht （Acari： Siteroptidae） under controlled conditions （20 ± l, 22 ± 1 and 25 ± 1℃, 70% ± 5% relative humidity and a photoperiod of 16L ： 8D hours）. Glass Petri dishes inoculated with Trichoderma sp. mycelia were used as substrate and food source. The mean developmental time of the egg and the active larva did not differ significantly at the various constant temperatures, but these periods were significantly different for the quiescent larval stage. The preoviposition period ranged from 2.3 to 2.8 days, the ovipositional period increased with temperature increase, and all females died immediately after oviposition. The development of active larvae was the fastest of all life stages. The developmental threshold ranged between 5.25-14.22℃ the highest value being observed for the quiescent larval development. For immature development required 89.29 degree-days. Values of rm （intrinsic rate of increase） were 0.229, 0.398 and 0.386 for 20, 22 and 25℃ respectively. Finite rates of increase （λ） increased along with increasing temperature from 20-25℃ consequently the population doubling time （D） and mean generation time （T） showed significant differences with increasing temperature.展开更多
调查了沈阳彰驿地区低温平菇害虫的种类及其发生规律,为平菇虫害防治提供理论依据。利用黄板诱集方法定时收集菇棚内有害成虫数据,鉴定成虫种类,采用Excel、SPSS22.0软件统计相对多度和生态优势度等生态指标。结果显示,沈阳彰驿地区低...调查了沈阳彰驿地区低温平菇害虫的种类及其发生规律,为平菇虫害防治提供理论依据。利用黄板诱集方法定时收集菇棚内有害成虫数据,鉴定成虫种类,采用Excel、SPSS22.0软件统计相对多度和生态优势度等生态指标。结果显示,沈阳彰驿地区低温平菇害虫以泰纳异蚤蝇Megaselia tamilnaduensis Disney平菇厉眼蕈蚊Lycoriella pleuroti Yang et Zhang为主。且泰纳异蚤蝇爆发高峰期为9月,平菇厉眼蕈蚊爆发高峰期为3月和4月。展开更多
文摘This paper is concerned with the bionomics and demography of Pediculaster fletchmanni Wicht （Acari： Siteroptidae） under controlled conditions （20 ± l, 22 ± 1 and 25 ± 1℃, 70% ± 5% relative humidity and a photoperiod of 16L ： 8D hours）. Glass Petri dishes inoculated with Trichoderma sp. mycelia were used as substrate and food source. The mean developmental time of the egg and the active larva did not differ significantly at the various constant temperatures, but these periods were significantly different for the quiescent larval stage. The preoviposition period ranged from 2.3 to 2.8 days, the ovipositional period increased with temperature increase, and all females died immediately after oviposition. The development of active larvae was the fastest of all life stages. The developmental threshold ranged between 5.25-14.22℃ the highest value being observed for the quiescent larval development. For immature development required 89.29 degree-days. Values of rm （intrinsic rate of increase） were 0.229, 0.398 and 0.386 for 20, 22 and 25℃ respectively. Finite rates of increase （λ） increased along with increasing temperature from 20-25℃ consequently the population doubling time （D） and mean generation time （T） showed significant differences with increasing temperature.
文摘调查了沈阳彰驿地区低温平菇害虫的种类及其发生规律,为平菇虫害防治提供理论依据。利用黄板诱集方法定时收集菇棚内有害成虫数据,鉴定成虫种类,采用Excel、SPSS22.0软件统计相对多度和生态优势度等生态指标。结果显示,沈阳彰驿地区低温平菇害虫以泰纳异蚤蝇Megaselia tamilnaduensis Disney平菇厉眼蕈蚊Lycoriella pleuroti Yang et Zhang为主。且泰纳异蚤蝇爆发高峰期为9月,平菇厉眼蕈蚊爆发高峰期为3月和4月。
