温度对悬铃木方翅网蝽生长发育、存活和繁殖的影响

Effects of temperature on growth,development,survival and reproduction of Corythucha ciliata(Say)(Hemiptera:Tingidae)

在室内研究不同温度下悬铃木方翅网蝽各虫态的发育历期、存活率及雌成虫的产卵量,组建不同温度下的实验种群生命表。结果显示,在15-33℃范围内,随温度升高悬铃木方翅网蝽的发育速率加快,并符合Logistic模型。悬铃木方翅网蝽卵、1龄、2龄、3龄、4龄、5龄若虫、产卵前期和全世代的发育起点温度分别为10.42、9.49、7.89、10.12、8.82、7.80、9.69和10.42℃,有效积温分别为153.9、38.8、41.4、31.8、42.0、69.5、101.9和479.3日.度。悬铃木方翅网蝽世代存活率和单雌产卵量在测定温度范围内均表现为先升高后降低的抛物线关系,在2 5℃时最高,分别为57.81%和87.71粒/雌。成虫寿命和雌成虫产卵期均随温度的升高而缩短。25℃时,种群内禀增长率和种群趋势指数最大,分别为0.0388和22.46。25~30℃是该虫生长发育的最适温区。

The developmental duration,survival and fecundity of Corythucha ciliata at different temperatures were recorded,and life tables at different temperatures were constructed.The results showed that the developmental rate of C.ciliata increased with the temperature during 15-33 ℃,and the relationships between them could be simulated by the Logistic model.The threshold temperatures and effective accumulated temperatures of the egg,1st instar nymph,2nd instar nymph,3rd instar nymph,4th instar nymph,5th instar nymph,preoviposition and the whole generation of C.ciliata were 10.42 and 153.9,9.49 and 38.8,7.89 and 41.4,10.12 and 31.8,8.82 and 42.0,7.80 and 69.5,9.69 and 101.9,and 10.42 ℃ and 479.3 degree-days,respectively.The generation survival rates and number of eggs laid per female changed with the temperature,and they reached the highest at 25 ℃,with the values being 57.81% and 88.71,respectively.The adult longevity and the oviposition period of female adults were shortened with the increase of temperature.The innate capacity for increase and population trend index were the highest at 25 ℃,with the values being 0.0388 and 22.46,respectively.The most suitable temperature range for C.ciliata living was 25-30 ℃.