3种药剂对红火蚁的防治效果

应用0.5%硫氟磺酰胺、0.25%氟虫胺及1%乙酰甲胺磷饵剂在红火蚁高发区防治红火蚁。试验结果表明,0.25%氟虫胺和0.5%硫氟磺酰胺饵剂处理7d后,活动蚁巢数就开始减少,35d后3种饵剂都能达到防治蚁巢的目的。     

药剂防治红火蚁应用示范效果

本文选用0.1%茚虫威饵剂和1.0%氟蚁腙饵剂对红火蚁进行防治应用示范,结果表明,使用0.1%茚虫威饵剂0.30 kg/667m~2和1.0%氟蚁腙饵剂0.45 kg/667m~2防治红火蚁,药后67 d对蚁巢及工蚁的防治效果均达到97%以上,都具有很好的防治效果,可以替代PFOS类药剂氟虫胺饵剂在生产上使用。建议生产使用0.1%茚虫威饵剂和1.0%氟蚁腙饵剂防治红火蚁时,每个蚁丘投药饵20～30 g,要分别在第一次施药后的30 d和60 d针对残存的活动蚁巢再补施药1次,才能确保把活动的蚁巢全面杀灭。     

不同饵剂对红火蚁的田间防控效果

本文探究了2.15%吡虫啉、0.05%茚虫威、0.3%氟虫腈和0.45%胺菊酯+0.05%氯氰菊酯等4种不同有效成分的杀蚁饵剂对红火蚁的防控效果。结果表明,4种饵剂处理两次施药后均可有效灭除红火蚁蚁巢及工蚁,第一次施药后7 d,以0.45%胺菊酯+0.05%氯氰菊酯的防治效果最高,达82.06%,2.15%吡虫啉防治效果最低,为56.4%;第二次施药后28 d, 0.05%茚虫威、0.3%氟虫腈和0.45%胺菊酯+0.05%氯氰菊酯的防治效果均达92%以上。综上,0.05%茚虫威、0.3%氟虫腈、0.45%胺菊酯+0.05%氯氰菊酯可有效防治红火蚁,建议在生产中轮换推广使用。     

应用硫氟酰胺毒饵防治红火蚁

应用硫氟磺酰胺毒饵在广西陆川防治25 hm2红火蚁的结果表明,施药后3d蚁巢内即有红火蚁个体死亡.施药后7、14、21d的防治效果分别可达81.5%、93.9%和100%;施药后余下的顽固蚁巢和7d后出现的新蚁巢经再度施药后14d全部死亡;从5月23日到11月25日蚁群全部死亡的5次监测、调查,既诱捕不到工蚁,也没有发现新蚁巢.因此,硫氟磺酰胺毒饵不仅具有高效、快速、安全、使用方便等特点,而且硫氟磺酰胺的应用完全可以取代目前国外普遍使用的二步施药法中的灌巢法.     

应用硫氟磺酰胺毒饵防治红火蚁

应用硫氟磺酰胺毒饵在广西陆川防治25hm^2红火蚁的结果表明，施药后3d蚁巢内即有红火蚁个体死亡。施药后7、14、21d的防治效果分别可达81．5%,93．9％和100%；施药后余下的顽固蚁巢和7d后出现的新蚁巢经再度施药后14d全部死亡；从5月23日到11月25日蚁群全部死亡的5欢监测、调查，既诱捕不到工蚁，也没有发现新蚁巢。因此，硫氟磺酰胺毒饵不仅具有高效、快速、安全、使用方便等特点，而且硫氟磺酰胺的应用完全可以取代目前国外普遍使用的二步施药法中的灌巢法。     

0.05%氟虫腈杀蚁饵剂对红火蚁的传毒活性测定

应用联杯法等室内测定了0.05%氟虫腈杀蚁饵剂对红火蚁的引诱力、毒杀速度及其传导毒杀活性.结果表明,供试饵剂对红火蚁的引诱性、毒杀速度显著优于正舒(对照药剂).红火蚁觅食到供试饵剂的初始时间为2.00 min,与正舒的2.33 min达显著差异;供试饵剂处理后24 h的工蚁死亡率为80.65%,显著高于对照饵剂的50.15%;72 h的工蚁死亡率即达到100%.联杯法测定结果表明,0.05%氟虫腈杀蚁饵剂能通过工蚁的取食和交哺行为进行传导.供试饵剂受药杯中工蚁、幼蚁和蚁后3 d后死亡率均达到100%,显著高于对照饵剂.0.05%氟虫腈杀蚁饵剂引诱性强、对红火蚁具有高胃毒、高传导毒杀活性,可适用于防控入侵红火蚁.     

几种毒饵对红火蚁的室外诱杀效果比较

选用阿维菌素、吡丙醚、氟虫睛、吡虫啉、毒死蜱和硫氟磺酰胺等6种毒饵在室外对红火蚁进行诱杀效果比较试验,结果表明0.5%硫氟磺酰胺饵剂的防治效果最好,药后7d起效,21d后防效达42.7%,35d后达100%。     

氟磺酰胺毒饵使用量对红火蚁防治效果的影响

在确定了氟磺酰胺毒饵对红火蚁控制效果的基础上,就氟磺酰胺毒饵的使用量对红火蚁的控制效果进行了研究。结果表明:在5-25 g/巢的范围内,氟磺酰胺毒饵都可获得较好的防治效果,但防治效果及蚁巢的死亡程度会因施药量的不同而异。5 g/巢的剂量可在40 d内获得平均为96.7%的防效,但不能将所有的蚁巢杀死。10-25 g/巢的剂量可以在30-40 d内使蚁巢死亡,但蚁巢100%死亡所需的时间会因剂量的减少而延长。工蚁数量下降的程度不会因氟磺酰胺毒饵的使用量而产生差异。为此,建议在使用氟磺酰胺毒饵防治红火蚁时,可在10-25 g/巢的范围内根据蚁巢大小调整使用量。     

0.045％茚虫威饵剂对红火蚁的田间防治效果评价

试验研究了0.045%茚虫威饵剂对红火蚁的田间防治效果,结果表明,施药25 d后0.045%茚虫威饵剂3、4、5 g/巢和0.015%多杀菌素饵剂15 g/巢处理的活动蚁巢减退率分别为90.2%、95.0%、97.5%、82.1%,工蚁减退率分别为84.4%、84.2%、90.2%、80.6%,蚁群级别降低率分别为97.7%、99.3%、100%、96.7%。提出了包括活动蚁巢数量、工蚁数量和蚁巢结构变化等方面的评价药剂对红火蚁防治效果的综合性指标。     

几种毒饵对红火蚁的室内诱杀药效试验

阿维菌素、吡丙醚、氟虫腈、吡虫啉、毒死蜱和氟磺酰胺等6种毒饵在室内对红火蚁进行诱杀实验结果表明：氟磺酰胺和吡丙醚的药效均属于慢性,较适于作为红火蚁防控根除的诱杀毒饵药剂;阿维菌素和吡虫啉的药效介于急、慢性之间;而氟虫腈、毒死蜱属于急性毒杀药剂,不适于作为红火蚁诱杀毒饵.其中0.5%氟磺酰胺饵剂作为广西红火蚁发生区的面上防治药剂已取得显著控制效果.     

四种毒饵对红火蚁的田间防治效果评价

采用工蚁诱测法和挖巢观察法评价了4种国产毒饵对红火蚁Solenopsis invicta的田间防治效果。结果表明,氟虫胺、胺菊酯、苯氧威、多杀霉素4种毒饵处理后,红火蚁工蚁诱集百分率均明显降低,处理5d后氟虫胺、胺菊酯的工蚁诱集率为0,而多杀霉素处理10d后诱集率为0。施药后25d4种毒饵处理活动蚁巢减退率分别为100%、100%、50%和71.4%,工蚁减退率分别为100%、100%、92.7%和100%。处理6周后蚁群级别分别降低了100%、100%、83.3%、73.0%。     

A new fire ant (Hymenoptera: Formicidae) bait base carrier for moist conditions

BACKGROUND: A new water‐resistant fire ant bait (T‐bait; cypermethrin 0.128%) consisting of dried distillers grains with solubles (DDGS) as a carrier was developed and evaluated against a standard commercial bait (Advion^®; indoxacarb 0.045%) under both laboratory and field conditions. RESULTS: When applying the normal T‐bait or Advion^® in the laboratory, 100% of Solenopsis invicta Buren worker ants were killed within 4 days. However, when the T‐bait and Advion^® were wetted, 70.6 and 39.7% of the ants were killed respectively. Under field conditions, dry T‐bait and dry Advion^® had almost the same efficacy against ant colonies. However, when T‐bait and Advion^® came in contact with water, the former's ability to kill S. invicta colonies in the field was only marginally reduced, while Advion^® lost virtually all of its activity. In addition, DDGS was also shown to be compatible with a number of other insecticides, such as d‐allethrin, permethrin and pyrethrin. CONCLUSION: Based on its properties of remaining attractive to the fire ants when wetted, combined with its ant‐killing abilities both in the laboratory and in the field, T‐bait is an efficient fire ant bait, especially under moist conditions. Copyright © 2010 Society of Chemical Industry     

Argentine ant control around homes: efficacy of treatments and urban runoff

ABSTRACT

Pest management professionals in California receive more customer complaints about Argentine ants than for any other urban ant pest. Fipronil, applied as a 30 × 30 cm band around the house foundation, has become the preferred treatment used to control these ants. Unfortunately, fipronil is now showing up in urban waterways at levels that are toxic to aquatic invertebrates. Our recent studies are aimed at mitigating insecticide runoff while still controlling the ant infestations. A high priority is preventing fipronil runoff from the driveway to the street, where it can flow into drains and from there to urban waterways. In this paper, two related studies address these issues. Not treating driveways with fipronil reduced by two to three orders of magnitude its runoff when compared with earlier studies. However, not treating the driveway can reduce efficacy of treatments. Granular bifenthrin, indoxacarb, botanicals, and a thiamethoxam ant bait were tested as supplemental treatments. The gel bait showed the best result as a supplement, but only after 8 weeks. We have reduced fipronil runoff while maintaining efficacy of the ant treatments.     

外来物种红火蚁的化学防治技术

红火蚁的入侵已引起我国各界的关注,本文介绍了入侵红火蚁化学防治技术研究进展。按照化学防治策略可以分为以蚁巢为单元的局部处理和大面积全部处理,从施药技术角度可以分为浇灌和撒施毒饵两大类。浇灌技术主要是将药液灌入蚁巢内,其药液量是一个关键因子;毒饵适用的场所比较广泛,但是施药时间对控制效果影响比较大,一般在晚上施药效果较好,雨后不能马上使用毒饵。     

Determining the most effective concentration of cypermethrin and the appropriate carrier particle size for fire ant (Hymenoptera: Formicidae) bait

BACKGROUND: The purpose of this study was to determine the most effective particle size of DDGS (distiller's dried grains with solubles) as fire ant bait carrier, as well as the most effective concentration of cypermethrin as a toxicant against the red imported fire ant (RIFA) Solenopsis invicta Buren under laboratory conditions. RESULTS: The DDGS particle size did not affect the fire ant's preference for the bait, but it did affect the mass of DDGS being carried back to the nest. The size of the DDGS particles and the mass of DDGS being carried back to the nest were positively correlated. The most efficient particle size of DDGS was 0.8–2 mm. The concentration of cypermethrin has a specific range for killing fire ants in an efficient manner. Neither a very low nor a very high concentration of cypermethrin was able to kill fire ants efficiently. The most effective concentration of cypermethrin was 0.13% in DDGS when mixed with 15% shrimp shell powders and 11% soybean oil. CONCLUSION: Based on its ability to kill fire ants when mixed with cypermethrin, as well as the advantage of having a larger area coverage when sprayed in the field, DDGS as the carrier and cypermethrin as the toxicant can be considered to be an efficient way to prepare fire ant bait for controlling fire ants in infested areas. Copyright © 2012 Society of Chemical Industry     

11种杀虫剂对草皮中红火蚁的检疫除害效果

本文试验了11种杀虫剂对草皮中红火蚁的检疫灭除效果。结果表明,40%毒死蜱乳油30000倍液2、%阿维菌素乳油30000倍液、80%敌敌畏乳油6000倍液4、.5%高效氯氰菊酯乳油3000倍液浓度可完全杀死红火蚁,且对草皮生长没有影响,满足检疫处理要求;其余7种不能达到快速灭除草皮中红火蚁的要求。同时发现,草皮中的红火蚁数量与实际诱集到的数量之间关系符合模型Y=0.0032X-0.59(R2=0.9647,P=0.01)。     

盆栽花卉红火蚁药剂处理试验初报

高效氯氰菊脂、氯氰菊酯、溴氰菊酯、氰戊菊酯、高效氯氟氰菊酯、阿维菌素、氟虫腈和毒死蜱等8种杀虫剂浇灌处理盆栽花卉的红火蚁蚁巢试验证明:4.5%高效氯氰菊酯乳油和2.5%溴氰菊酯乳油800倍稀释液、20%氰戊菊酯乳油和1.8%阿维菌素乳油2000倍稀释液均能在3天内完全杀灭蚁巢内的工蚁、兵蚁、有翅繁殖蚁和蚁后;对花卉生长没有不良影响,可用于携带红火蚁盆花的应急检疫除害处理;其余4种农药不能达到快速杀灭红火蚁的要求.