| 仇兰芬，仲丽，邵金丽，王建红，李广，车少臣，魏建荣,2020,储存条件对花绒寄甲成虫寿命及产卵量的影响[J].环境昆虫学报,(5):1093-1099 |
| 储存条件对花绒寄甲成虫寿命及产卵量的影响 |
| Influence of stored conditions on lifespan and egg laid numbers of Dastarcus helophoroides Fairmaire adults |
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| DOI： |
| 中文关键词: 花绒寄甲 天敌昆虫 低温保存 寿命 产卵量 |
| 英文关键词:Dastarcus helophoroides insect natural enemy low temperature storage lifespan egg laid number |
| 基金项目:北京市公园管理中心科技项目(2017026)；河北省高校百名优秀创新人才项目(2014BR2-203) |
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| 中文摘要: |
| 花绒寄甲Dastarcus helophoroides Fairmaire是天牛类林木蛀干害虫的重要天敌昆虫，释放成虫是利用该天敌控制害虫的重要手段之一。为保持成虫释放时仍具有有效活力，本文研究了成虫在释放前的储存温度和储存时长对其产卵量和寿命的影响。试验采用饲喂和未饲喂的成虫在16±1℃、12±1℃、8±1℃和4±1℃下储存，测定成虫的死亡率，同时测试成虫在同一储存温度下保存不同时长后的产卵量与寿命。结果显示，成虫在12℃储存条件下死亡率最低，且羽化后的新成虫在储存前未饲喂更利于其存活。经历不同的储存时间后，花绒寄甲的产卵量均随时间变化呈现先升后降的规律，且不同储存时长的累积产卵量差异显著（F7,16=83.12, P<0.001）其中储存60 d的成虫产卵量最高，各处理间的累积死亡率差异显著（F7,16=277.82, P<0.001），其中储存60 d的死亡率最低为38%。储存温度与时长对花绒寄甲成虫寿命及产卵量有显著影响，成虫适合在12℃条件下保存，保存时长在60 d效果最好。 |
| 英文摘要: |
| Dastarcus helophoroides is an important insect natural enemy of Cerambycid wood borers. Releasing adults was one of effective methods to control tree wood borers. To guarantee their activity when releasing the adults, influence of stored temperature and stored period on the adult lifespan and their egg laid numbers were studied. The tested adults were divided into two groups, and one group was feed five days with diet and the other group was not feed. Then the adults of two groups were kept at 4±1℃, 8±1℃,12±1℃ and 16±1℃, respectively, and the mortalities of adults in different treatments were recorded at different times. Afterwards, the egg numbers laid by adults and lifespan of adults were compared among the adults which were stored at the same temperature for different periods. The mortality of adults at 12℃ was the lowest, and the adults in the groups feed with the diet after emerged were not unsuitable for their survive. After stored at 12℃ for the different periods, the egg numbers laid by the adults in all treatments went up firstly and then down with the time past, and there was significant difference among different stored-period treatments (F7,16=83.12, P<0.001). The egg number laid by the adults was the maximum when stored for 60 days at 12℃. The cumulative mortality rates among different stored-periods were also significant different (F7,16=277.82, P<0.001), and the mortality rate was only 38% when stored for 60 days at 12℃. In conclusion, the stored temperature and the stored period had significant influence on the lifespan of adults and the numbers of eggs they laid. The suitable stored temperature would be 12℃ and at this temperature the adults could live longer and had higher egg laid numbers when kept for 60 days. |
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