低温条件下广聚萤叶甲成虫的耐饥饿能力  

Starvation tolerance of Ophraella communa adults under low temperature condition

作　　者：齐国君[1] 高燕[1] 陈婷[1] 周小武 梁居林 吕利华[1] 

机构地区：[1]广东省农业科学院植物保护研究所/广东省植物保护新技术重点实验室,广东广州510640 [2]佛冈县农业技术推广中心,广东佛冈511600 [3]封开县农作物病虫测报站,广东封开526537

出　　处：《生物安全学报》2016年第4期266-269,共4页Journal of biosafety

基　　金：国家国际科技合作项目(2011DFB30040);"十二五"国家科技支撑计划(2015BAD08B02);科技部科技伙伴计划(KY201402015);广东省农业科学院院长基金(201406)

摘　　要：【背景】广聚萤叶甲是恶性入侵杂草豚草的一种重要专一性天敌,在冬季低温且缺乏食物的条件下,广聚萤叶甲的耐饥饿能力直接关系到其越冬种群的虫源基数。【方法】在室内观察广聚萤叶甲成虫在10℃低温条件下的存活率和死亡率,研究了水分(有水、无水)、不同密度(一雌一雄、二雌二雄、五雌五雄)、加入泥土枯枝对广聚萤叶甲耐饥饿能力的影响。【结果】无水、有水条件下,广聚萤叶甲成虫的平均存活时间分别为(15.23±1.01)、(13.33±0.88)d,水分对广聚萤叶甲的耐饥力的影响不显著;随着密度的增加,广聚萤叶甲的耐饥饿能力增强,一雌一雄、二雌二雄和五雌五雄的平均存活时间依次为(11.96±0.57)、(13.78±0.60)、(14.81±0.42)d;加入泥土和豚草枯枝后,广聚萤叶甲的耐饥饿能力明显提高,其平均存活时间为(15.97±1.05)d。【结论与意义】低温条件下广聚萤叶甲的耐饥饿能力较强,可保证部分广聚萤叶甲的自然种群在野外安全越冬,研究低温条件下广聚萤叶甲的耐饥饿能力对豚草的生物防治具有重要意义。【 Background】 Ophraella communa is an important natural enemy of the invasive weed Ambrosia artemisii/blia. Starvation tolerance of O. communa adults under lowr temperature and lack of food directly affec.t overwintering populations.【 Method】 Survival rate and mortality of O. communa adults at 10 ℃ were measured under laboratory conditions. The influence of moisture （ water, no water） , density （one pair of 1 female and 1 male, two pairs of females and males, and 5 pairs） , and environmental conditions （adding soil and deadwood） on starvation tolerance of O. communa were also s tudied. 【Res ul t】 Average survival time of O. commu- na adults was （ 15.23±1.01） days under dry conditions, and （ 13.33±0.88） days under humid conditions. The influence of moisture on starvation tolerance of O. communa was not significant. The starvation tolerance of 0. communa was enhanced with increase in density. Average survival durations of O. communa adults were （ 11.96±0.57） , （ 13.78±0.60） and （ 14.81±0.42） days for one pair, two pairs, and five pairs, respectively. Average survival durations of O. communa adults increased to （ 15.97±1.05） days after adding soil and deadwood.【Conclusion and significance】O. communa adult had high starvation tolerance under low temperature con-dition, and this ability could ensure partial natural population of the beetle to overwinter safely. Starvation tolerance of O. communa a-dults under low- temperature conditions played an important role in the theory and practice of biological control of A. artemisiifolia.

关 键 词：广聚萤叶甲 豚草 低温条件 成虫 耐饥饿能力 

分 类 号：S476[农业科学—农业昆虫与害虫防治] S451[农业科学—植物保护]