温度和光周期对小黑瓢虫滞育的调节作用  

Effect of Temperature and Photoperiod on Diapause Regulation of Delphastus catalinae(Horn)

作　　者：孟佳[1] 黄建[1] MENG Jia;HUANG Jian(College of Plant Protection,Fujian Agriculture and Forestry University,Fuzhou 350002,China)

机构地区：[1]福建农林大学植物保护学院,福州350002

出　　处：《中国生物防治学报》2021年第5期927-935,共9页Chinese Journal of Biological Control

基　　金：公益性行业(农业)科研专项(201103002);福建农林大学科技创新专项(KF2015067,KFA8098A)。

摘　　要：在实验室条件下研究了温度(11℃、16℃、21℃、26℃和31℃)和光周期(16L:8D、14L:10D、12L:12D、10L:14D和8L:16D)对小黑瓢虫Delphastuscatalinae(Horn)滞育的影响。结果表明,温度、光周期及二者的相互作用均对小黑瓢虫滞育有显著影响。低温和短光照诱导成虫进入滞育。26℃和31℃时,测定的5个光周期均不能诱导滞育;而11℃、16℃和21℃时,滞育率随温度降低或光照时长缩短均呈升高的趋势。11℃和光周期8L:16D是诱导滞育的最适条件。11℃和光周期8L:16D诱导40d,成虫进入稳定的滞育状态,滞育率高达95.44%。同时发现,滞育成虫产卵前期随温度降低或光照时长缩短而延长。11℃和光周期8L:16D有利于维持滞育,延长成虫产卵前期。21℃和光周期14L:10D加速滞育的解除,缩短成虫产卵前期。The influences of temperature(11℃,16℃,21℃,26℃,31℃)and photoperiod(16 L:8 D,14 L:10 D,12 L:12 D,10 L:14 D,8 L:16 D)on diapause of Delphastus catalinae(Horn)were determined in the laboratory.The results showed that the diapause of D.catalinae was significantly affected by temperature,photoperiod,and the interaction between temperature and photoperiod.Low temperature and short daylight induced the adult diapause.At 26℃and 31℃,none of the five measured photoperiods could induce diapause.While at 11℃,16℃and 21℃,adult diapause rate showed an increasing trend with decreasing temperature or shortening daylight.The optimum conditions to induce diapause were 11℃and photoperiods 8 L:16 D.The 95.4%of adults reared at 11℃and photoperiods 10 L:14 D for 40 days would enter a stable diapause state.It was also found that the pre-oviposition period of diapause adults was prolonged with decreasing temperature or shortening daylight.The conditions of 11℃and photoperiods 8 L:16 D were favorable for the maintenance of diapause duration of diapause and the prolong of pre-oviposition period,whereas the conditions of 21℃and photoperiods 14 L:10 D accelerated the termination of diapause and shortened the pre-oviposition period.

关 键 词：小黑瓢虫 滞育 温度 光周期 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]