CN109258698B - 一种诱蚊产卵剂及其应用 - Google Patents
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Abstract
本发明公开了一种诱蚊产卵剂,由组分A和组分B组成;其中组分A由以下质量百分含量的原料制成:十四烷酸:0.000001~0.0001%、壬酸:0.000001~0.00001%、己酸:0.000001~0.0001%、3‑甲基‑吲哚:0.000001~0.00001%、乙醛:0.00001~0.001%、乙醇:余量;组分B是质量百分含量为0.125~0.5%的后发酵茶液和/或后发酵茶粉水溶液。该诱蚊产卵剂对于蚊产卵具有引诱和产卵刺激作用,能诱蚊产卵,尤其是对于白纹伊蚊。本发明还公开了上述诱蚊产卵剂在引诱白纹伊蚊产卵中的应用。
Description
技术领域
本发明属于产卵剂技术领域,具体涉及一种诱蚊产卵剂及其应用。
背景技术
白纹伊蚊,不仅叮咬骚扰人类,同时还可能传播多种疾病,如寨卡、登革热、疟疾、基孔肯雅热等,对人类的健康和社会的安定产生极大的危害。登革热目前是我国最重要的蚊媒传染病,近年来在我国的肆虐给人民群众的生命健康、社会安定、经济发展都带来了巨大影响。登革热尚无有效的治疗药物和疫苗,因此防治登革热最有效的措施就是控制其传播媒介。
目前在白纹伊蚊防制中常采用的方法是生物杀虫剂,苏云金芽孢杆菌(Bacillusthuringiensis),以及化学杀虫剂,如有机磷酸酯和拟除虫菊酯类。然而,由于显著的环境影响,这些方法并不理想。此外,已经证实随着时间的推移蚊虫可以发展出对这些方案的抗药性。因此,长远看来,这些方法是不可持续的。更加环境友好的控制蚊虫种群密度的方法着眼于在虫卵或幼虫有机会成熟之前将其诱捕或销毁,或在雌性妊娠蚊子产卵前后将其捕获。在某些情况下,该方法涉及提供对妊娠蚊虫有吸引力的人工繁殖地,和在蚊子成熟并会飞之前将卵或幼虫从孳生地中清除。
在自然环境中,影响蚊虫聚集产卵习性因素有多种,诸如水质、照度、颜色和特殊化学气味等。研究发现源自水体中的细菌,特别是一些假单胞菌科(Pseudomonadaceaae)的代谢产物对蚊虫有很强的引诱产卵作用。一些植物浸液如干草浸出液、白橡树(Quercusfabri Hance)叶发酵浸出液对伊蚊具有产卵引诱性,但随后的研究均认为发挥作用的是浸出液中的微生物代谢物,而不是其中的有机成份。2008年Loganathan Ponnusamy等以GC-MS技术结合蚊虫行为实验对竹叶浸出液、白橡树叶发酵浸出液中细菌的挥发性物质进行引诱产卵研究,发现十四酸、壬酸、十四酸甲酯3种物质可以明显诱导孕雌蚊产更多的卵,与前述结果相印证。同时该研究也提示了这些化合物混合后要比单独使用更为有效,各化合物的浓度配比是决定引诱性强弱或引起趋避反应的决定性因素。
尽管清水能吸引依赖于水产卵的大多数昆虫,但是可以将化学引诱剂添加到水中以增加水对妊娠昆虫的引诱力。例如,专利No.2008/0003197公开了一种用于在人工孳生地使用的缓释引诱剂。专利WO2015145114A1公开使用雪松醇或类似物,作为产卵引诱剂来诱杀妊娠疟蚊。但是不同类型蚊虫产卵地孳生地不同,如按蚊多在大型水体里产卵,库蚊偏爱在污水中产卵,而伊蚊喜欢在小而干净的水体里产卵。这和水体里的气味有很大关系。如今,越来越多的人意识到,特定种类的蚊虫被特定种类的引诱剂吸引。因此,有必要开发能有效吸引特定种类蚊虫的引诱剂。
发明内容
本发明的目的在于提供一种诱蚊产卵剂,该诱蚊产卵剂对于蚊产卵具有引诱和产卵刺激作用,能诱蚊产卵,尤其是对于白纹伊蚊。
本发明的目的还在于提供上述诱蚊产卵剂在诱导白纹伊蚊产卵中的应用。
本发明的上述第一个目的是通过以下技术方案来实现的:一种诱蚊产卵剂,由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.000001~0.0001%
壬酸:0.000001~0.00001%
己酸:0.000001~0.0001%
3-甲基-吲哚:0.000001~0.00001%
乙醛:0.00001~0.001%
乙醇:余量;
组分B是质量百分含量为0.125~0.5%的后发酵茶液和/或后发酵茶粉水溶液。
优选的,该诱蚊产卵剂,由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.000001%
壬酸:0.000001%
己酸:0.00001%
3-甲基-吲哚:0.000001%
乙醛:0.001%
乙醇:余量;
组分B是质量百分含量为0.25%的后发酵茶液和/或后发酵茶粉水溶液。
优选的,该诱蚊产卵剂由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.00001%
壬酸:0.00001%
己酸:0.00001%
3-甲基-吲哚:0.00001%
乙醛:0.001%
乙醇:余量;
组分B是质量百分含量为0.25%的后发酵茶液和/或后发酵茶粉水溶液。
优选的,该诱蚊产卵剂由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.0001%
壬酸:0.000001%
己酸:0.00001%
3-甲基-吲哚:0.00001%
乙醛:0.00001%
乙醇:余量;
组分B是质量百分含量为0.25%的后发酵茶液和/或后发酵茶粉水溶液。
引诱蚊虫产卵剂,根据其作用方式和结果的不同,可分为两大类:一类能吸引、引导雌蚊发现并飞向适宜的产卵场所,称为诱卵信息素,简称产卵引诱剂;另一类的作用则表现为能够刺激雌蚊更快地产卵,故称作产卵刺激素,简称产卵刺激剂。Millar等发现赤式6-乙酰氧基-5-十六碳的内酯与粪臭素混合使用可明显提高对蚊虫的产卵引诱作用。不同蚊种对相同物质表现出不同的趋向性。本发明选取中、对伊蚊孳生地具有产卵引诱作用的产卵引诱剂和产卵刺激剂作为候选引诱物质。
表1诱蚊产卵剂中组分A的基本信息及所起作用
在上述诱蚊产卵剂中:
所述的乙醇优选是体积百分含量为90~95%的乙醇。
所述的后发酵茶液优选为六堡茶茶液,所述的后发酵茶粉优选为六堡茶茶粉。
同样的,本发明申请人通过试验发现,加入了未发酵茶粉、未发酵茶液、全发酵茶粉、全发酵茶液、后发酵茶粉和后发酵茶液,在添加了发酵茶粉、全发酵茶液以及后发酵茶粉和/或后发酵茶液时,可以提升组分A的诱蚊产卵效果,添加后发酵茶粉和/或后发酵茶液,提升效果更佳,当添加六堡茶茶液和/或茶粉时,效果最佳。
所述的蚊优选为白纹伊蚊。
本发明的上述第二个目的是通过以下技术方案来实现的:上述的诱蚊产卵剂在诱导白纹伊蚊产卵中的应用。
本发明具有以下优点:本发明通过诱蚊产卵剂对于蚊产卵具有引诱和产卵刺激作用,能诱蚊产卵,尤其是对于白纹伊蚊。
附图说明
图1是实施例1诱产卵剂筛选过程中实验的组合效果图,其中A图为不同组合诱集率效果;B图为不同组合产卵活跃指数效果;
图2是实施例2不同茶叶类型随着发酵时间对蚊虫的诱卵效果,A、B为后发酵茶,C、D为全发酵茶,E、F为不发酵茶;
图3是实施例9-11中的诱蚊产卵剂的诱蚊产卵效果;
图4是实施例9中的诱蚊产卵剂的两个组分的结合效果,A-C为3个生物学重复。
具体实施方式
如无特殊说明,以下原料均为市售产品。
实施例1
本发明首先通过以下组合1-18来筛选组分A中各组分的较佳实施例以及浓度范围,下述为各组分在以乙醇为溶剂制成的溶液中的体积百分含量,其中乙醇是质量百分含量为95%的乙醇。
组合1
十四烷酸0.00001%,壬酸0.00001%,己酸0.0001%,3-甲基-吲哚0.00001%,乙醛0.0001%。
组合2
十四烷酸0.0001%,壬酸0.000001%,己酸0.000001%,3-甲基-吲哚0.00001%,乙醛0.0001%。
组合3
十四烷酸0.000001%,壬酸0.0001%,己酸0.0001%,3-甲基-吲哚0.00001%,乙醛0.00001%。
组合4
十四烷酸0.000001%,壬酸0.0001%,己酸0.000001%,3-甲基-吲哚0.00001%,乙醛0.001%。
组合5
十四烷酸0.00001%,壬酸0.0001%,己酸0.00001%,3-甲基-吲哚0.000001%,乙醛0.00001%。
组合6
十四烷酸0.0001%,壬酸0.00001%,己酸0.0001%,3-甲基-吲哚0.000001%,乙醛0.00001%。
组合7
十四烷酸0.0001%,壬酸0.0001%,己酸0.00001%,3-甲基-吲哚0.0001%,乙醛0.0001%。
组合8
十四烷酸0.00001%,壬酸0.0001%,己酸0.000001%,3-甲基-吲哚0.000001%,乙醛0.0001%。
组合9
十四烷酸0.0001%,壬酸0.00001%,己酸0.000001%,3-甲基-吲哚0.000001%,乙醛0.001%。
组合10
十四烷酸0.000001%,壬酸0.000001%,己酸0.00001%,3-甲基-吲哚0.000001%,乙醛0.001%。
组合11
十四烷酸0.00001%,壬酸0.000001%,己酸0.0001%,3-甲基-吲哚0.0001%,乙醛0.001%。
组合12
十四烷酸0.00001%,壬酸0.00001%,己酸0.00001%,3-甲基-吲哚0.00001%,乙醛0.001%。
组合13
十四烷酸0.000001%,壬酸0.00001%,己酸0.000001%,3-甲基-吲哚0.0001%,乙醛0.00001%。
组合14
十四烷酸0.000001%,壬酸0.000001%,己酸0.0001%,3-甲基-吲哚0.000001%,乙醛0.0001%。
组合15
十四烷酸0.0001%,壬酸0.0001%,己酸0.0001%,3-甲基-吲哚0.0001%,乙醛0.001%。
组合16
十四烷酸0.000001%,壬酸0.00001%,己酸0.00001%,3-甲基-吲哚0.0001%,乙醛0.0001%。
组合17
十四烷酸0.0001%,壬酸0.000001%,己酸0.00001%,3-甲基-吲哚0.00001%,乙醛0.00001%。
组合18
十四烷酸0.00001%,壬酸0.000001%,己酸0.000001%,3-甲基-吲哚0.0001%,乙醛0.00001%。
组分A的不同组合引诱白纹伊蚊产卵效果如图1中所示,其中A图为不同组合诱集率效果;B图为不同组合产卵活跃指数效果,从图1可以看出,不同配比对蚊虫引诱作用相差较大。以组合1、2、3、5、10、12、14、17、18效果较佳,组合10、12、17效果最佳。
实施例2
为了验证不同茶叶类型随着发酵时间对蚊虫的诱卵效果,本发明在实验室条件下测试不同茶叶类型随着发酵时间对蚊虫的诱卵效果。
每次实验吸取10只吸血后3d的雌性白纹伊蚊放入2.0m*1.8m*1.8m的蚊帐中,蚊帐中放置2个产卵杯,其中1个杯中装有200ml水作为对照组,另外一个中装有添加有不同类型茶粉的200mL水,每组实验设3次重复产卵杯在蚊笼内放置24h后取出,记录产卵数,计算诱卵率和产卵活跃指数(oviposition activity index,OAI),计算公式:
诱卵率=实验组卵数/(实验组卵数+对照组卵数)
OAI=(实验组卵数-对照组卵数)/(实验组卵数+对照组卵数)
诱卵率>50%,OAI为正数时,实验组对产卵具有引诱作用;反之,则为趋避作用。若OAI>0.3,则实验组具有明显的诱集产卵效果,数值越大诱集效果越好。
结果如图2所示,其中A、B图中添加为后发酵茶,C、D图中添加为全发酵茶,E、F图中添加为不发酵茶的产卵活跃指数和诱集率,从图2中可以看出不同类型茶叶均有一定诱蚊产卵效果,其中不发酵茶第14天时诱蚊产卵效果最好,全发酵茶第20天时诱蚊效果最好,而后发酵茶不同天数均有一定诱蚊效果,以第3d、9d、15d、18d时诱蚊效果最好。
因此,本发明以筛选出来的诱蚊产卵效果较好的组分A组合以及后发酵茶粉作为核心配方,进行了重新组合获得了较佳的诱蚊产卵剂配方,下面以实施例3-11为例进行说明。
实施例3
本实施例提供的诱蚊产卵剂,由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.00001%
壬酸:0.00001%
己酸:0.0001%
3-甲基-吲哚:0.00001%
乙醛:0.0001%
乙醇:余量;
组分B是质量百分含量为0.125%的后发酵茶粉水溶液。
实施例4
本实施例提供的诱蚊产卵剂,由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.0001%
壬酸:0.000001%
己酸:0.000001%
3-甲基-吲哚:0.00001%
乙醛:0.0001%
乙醇:余量;
组分B是质量百分含量为0.5%的后发酵茶粉水溶液。
实施例5
本实施例提供的诱蚊产卵剂,由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.000001%
壬酸:0.0001%
己酸:0.0001%
3-甲基-吲哚:0.00001%
乙醛:0.00001%
乙醇:余量;
组分B是质量百分含量为0.25%的后发酵茶液。
实施例6
本实施例提供的诱蚊产卵剂,由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.00001%
壬酸:0.0001%
己酸:0.00001%
3-甲基-吲哚:0.000001%
乙醛:0.00001%
乙醇:余量;
组分B是质量百分含量为0.125%的后发酵茶液和后发酵茶粉水溶液。
实施例7
本实施例提供的诱蚊产卵剂,由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.000001%
壬酸:0.000001%
己酸:0.0001%
3-甲基-吲哚:0.000001%
乙醛:0.0001%
乙醇:余量;
组分B是质量百分含量为0.5%的后发酵茶液。
实施例8
本实施例提供的诱蚊产卵剂,由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.00001%
壬酸:0.000001%
己酸:0.000001%
3-甲基-吲哚:0.0001%
乙醛:0.00001%
乙醇:余量;
组分B是质量百分含量为0.25%的后发酵茶粉水溶液。
实施例9
本实施例提供的诱蚊产卵剂,由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.000001%
壬酸:0.000001%
己酸:0.00001%
3-甲基-吲哚:0.000001%
乙醛:0.001%
乙醇:余量;
组分B是质量百分含量为0.25%的后发酵茶粉水溶液。
实施例10
本实施例提供的诱蚊产卵剂,由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.00001%
壬酸:0.00001%
己酸:0.00001%
3-甲基-吲哚:0.00001%
乙醛:0.001%
乙醇:余量;
组分B是质量百分含量为0.25%的后发酵茶粉水溶液。
实施例11
本实施例提供的诱蚊产卵剂,由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.0001%
壬酸:0.000001%
己酸:0.00001%
3-甲基-吲哚:0.00001%
乙醛:0.00001%
乙醇:余量;
组分B是质量百分含量为0.25%的后发酵茶粉水溶液。
将上述实施例1-9中的诱蚊产卵剂,在实验室条件下测试候选引诱物质对白纹伊蚊引诱浓度范围,每次实验吸取10只吸血后3d的雌性白纹伊蚊放入2.0m*1.8m*1.8m的蚊帐中,蚊帐中放置2个产卵杯,杯中分别装有加入了组分B的200mL水,杯子侧面放置产卵滤纸,滤纸上分别滴有500μL组分A和500μL溶剂(95%乙醇)的作为对照组,每组实验设3次重复产卵杯在蚊笼内放置24h后取出,记录产卵数,计算诱卵率和产卵活跃指数(ovipositionactivity index,OAI),计算公式:
诱卵率=实验组卵数/(实验组卵数+对照组卵数)
OAI=(实验组卵数-对照组卵数)/(实验组卵数+对照组卵数)
诱卵率>50%,OAI为正数时,实验组对产卵具有引诱作用;反之,则为趋避作用。若OAI>0.3,则实验组具有明显的诱集产卵效果,数值越大诱集效果越好。
其中以实施例9-11中诱蚊产卵效果最好,如图3-4中所示。
图3为实施例9-11的诱蚊产卵效果,从图3中可以看出,几个组合与后发酵茶粉结合对引诱蚊虫产卵具有协同作用,其中图4为最佳实施例9的蚊虫产卵现场图,从图4中可以看到,实验组蚊虫产卵数明显多于对照组。
本发明不受上述实施例的限制,其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化,均应为等效的置换方式,都包含在本发明的保护范围。
Claims (6)
1.一种诱蚊产卵剂,其特征是由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸: 0.000001~0.0001%
壬酸:0.000001~0.00001%
己酸:0.000001~0.0001%
3-甲基-吲哚:0.000001~0.00001%
乙醛:0.00001~0.001%
乙醇:余量;
组分B是质量百分含量为0.125~0.5%的后发酵茶液和/或后发酵茶粉水溶液;
所述的后发酵茶液为六堡茶茶液,所述的后发酵茶粉为六堡茶茶粉;
所述蚊为白纹伊蚊。
2.根据权利要求1所述的诱蚊产卵剂,其特征是由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.000001%
壬酸:0.000001%
己酸:0.00001%
3-甲基-吲哚:0.000001%
乙醛:0.001%
乙醇:余量;
组分B是质量百分含量为0.25%的后发酵茶液和/或后发酵茶粉水溶液。
3.根据权利要求1所述的诱蚊产卵剂,其特征是由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.00001%
壬酸:0.00001%
己酸:0.00001%
3-甲基-吲哚:0.00001%
乙醛:0.001%
乙醇:余量;
组分B是质量百分含量为0.25%的后发酵茶液和/或后发酵茶粉水溶液。
4.根据权利要求1所述的诱蚊产卵剂,其特征是由组分A和组分B组成;
其中组分A由以下质量百分含量的原料制成:
十四烷酸:0.0001%
壬酸:0.000001%
己酸:0.00001%
3-甲基-吲哚:0.00001%
乙醛:0.00001%
乙醇:余量;
组分B是质量百分含量为0.25%的后发酵茶液和/或后发酵茶粉水溶液。
5.根据权利要求1-4任一项所述的诱蚊产卵剂,其特征是:所述的乙醇是体积百分含量为90~95%的乙醇。
6.权利要求1-4任一项所述的诱蚊产卵剂在诱导白纹伊蚊产卵中的应用。
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