金翅虫(神经翅目:金翅虫科)和球孢白僵菌(子囊菌目:球孢菌科)对病媒绿僵菌(半翅目:蚜蝇科)的防治效果

IF 1.3 3区农林科学 Q2 Agricultural and Biological Sciences

European Journal of Entomology Pub Date : 2023-11-07 DOI:10.14411/eje.2023.033

Laura AVIVAR-LOZANO, José María MOLINA, Sergio PÉREZ-GUERRERO

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引用次数: 0

摘要

在实验室条件下，测定了两种生物防治剂——金蝶(神经翅目:金蝶科)和entomopathoÂ-genic真菌球孢白僵菌(子囊菌目:球孢菌目:球孢菌目)对campestris (HemiÂ-ptera: aphrophoridis)若虫和成虫的防治效果。首先，将不同雌雄期的野油菜蛾与不同幼虫期的野油菜蛾进行对比。其次，评价了油菜拟南稻蛾若虫产生的泡沫对雌蛾捕食幼虫的影响。最后，在植物上喷洒4种浓度的球孢白僵菌野生菌株bbge1，以测定其对油菜白僵菌成虫的致死率。绿草蛉2龄和3龄幼虫能够捕获和杀死绿草蛉3龄和5龄若虫。3龄草蛉幼虫对若虫的杀伤率显著高于2龄草蛉幼虫的杀伤率。2龄幼虫对3龄若虫的杀虫率显著高于5龄若虫。3龄草蛉幼虫对5龄若虫的平均杀伤(±SEM)为1.50±0.31,2龄草蛉幼虫对若虫的杀伤极少。吐沫虫的泡沫减少了，但并没有阻止捕食。球孢白僵菌bbge1对油菜白僵菌成虫的LC50值为1.61 Ă—106分生孢子/mL, 1 Ă—107分生孢子/mL时的LT50值为3.63 d。本研究为两种有前景的防虫剂对苛养木杆菌病媒生物防治的活性提供了新的有价值的资料。需要进一步的研究来证实这里提出的结果，以及使用这些控制剂替代合成杀虫剂以防止苛养弧菌在欧洲进一步传播的成本效益。

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The effectiveness of Chrysoperla carnea (Neuroptera: Chrysopidae) and Beauveria bassiana (Ascomycota: Hypocreales) as control agents of Neophilaenus campestris (Hemiptera: Aphrophoridae) a vector of Xylella fastidiosa

The effectiveness of two biological control agents, Chrysoperla carnea (Neuroptera: Chrysopidae) and the entomopathoÂgenic fungus Beauveria bassiana (Ascomycota: Hypocreales) against nymphs and adults of Neophilaenus campestris (HemiÂptera: Aphrophoridae) was determined under laboratory conditions. First, different nymphal stages of N. campestris were presented to different larval stages of C. carnea. Second, the effect of the foam produced by N. campestris nymphs on the larvae of C. carnea predation was evaluated. Finally, four concentrations of a wild strain of B. bassiana, BbGEp1, were sprayed on plants in order to determine their lethality for adults of N. campestris. Second and 3rd-instar larvae of green lacewing larvae are capable of capturing and killing 3rd and 5th-instar nymphs of N. campestris. The percentage of 3rd-instar lacewing larvae that killed nymphs was significantly higher than that were killed by second-instar larvae. Second-instar larvae killed significantly more 3rd-instar nymphs than 5th-instar nymphs. Third instar lacewing larvae killed an average (± SEM) of 1.50 ± 0.31 5th-instar nymphs and 2nd-instar larvae killed very few nymphs. Spittlebug foam reduced, but did not prevent predation. The lethality of the entomopathogenic B. bassiana BbGEp1 used against adults of N. campestris was characterized by an LC50 value of 1.61 Ă 106 conidia/mL and LT50 of 3.63 days at 1 Ă 107 conidia/mL. The present study provides new and valuable data on the activity of two promising biological control agents of vectors of the bacterium Xylella fastidiosa. Further research is needed to confirm the results presented here and on the cost effectiveness of using these control agents as alternatives to synthetic insecticides for preventing the further spread of X. fastidiosa in Europe.

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来源期刊

European Journal of Entomology 生物-昆虫学

CiteScore

2.30

自引率

7.70%

发文量

审稿时长

6-12 weeks

期刊介绍： EJE publishes original articles, reviews and points of view on all aspects of entomology. There are no restrictions on geographic region or taxon (Myriapoda, Chelicerata and terrestrial Crustacea included). Comprehensive studies and comparative/experimental approaches are preferred and the following types of manuscripts will usually be declined: - Descriptive alpha-taxonomic studies unless the paper is markedly comprehensive/revisional taxonomically or regionally, and/or significantly improves our knowledge of comparative morphology, relationships or biogeography of the higher taxon concerned; - Other purely or predominantly descriptive or enumerative papers [such as (ultra)structural and functional details, life tables, host records, distributional records and faunistic surveys, compiled checklists, etc.] unless they are exceptionally comprehensive or concern data or taxa of particular entomological (e.g., phylogenetic) interest; - Papers evaluating the effect of chemicals (including pesticides, plant extracts, attractants or repellents, etc.), irradiation, pathogens, or dealing with other data of predominantly agro-economic impact without general entomological relevance.