Parasitoid community of the loreyi leaf wormMythimna (Acantholeucania) loreyi: Novel host-parasitoid associations and their efficiency in the eastern mediterranean region of Turkey     

Erdal Sertkaya  Ahmet Bayram 《Phytoparasitica》2005,33(5):441-449

The loreyi leaf worm,Mythimna (Acantholeucania) loreyi Duponchel (Lepidoptera, Noctuidae), is a pest of gramineous crops and causes significant economic damage to maize. In field surveys on maize to determine the parasitoid community and its impact on the pest in the eastern Mediterranean region of Turkey, nine parasitoid species were found associated with immature stages ofM. loreyi: The hymenopteran (Braconidae and Ichneumonidae) parasitoidsCotesia (=Apanteles) ruficrus (Haliday),Chelonus oculator Panzer,Meteorus ictericus Nees,Hyposoter didymator (Thunberg),Sinophorus sp.; and the dipteran (Tachinidae) parasitoidsPseudogonia rufifrons Wiedeman,Exorista rossica Mesnil,Gonia picea (Robineau-Desvoidy) andLinnaemya vulpina (Fallen) — the last three recorded for the first time as parasitoids ofM. loreyi in Turkey.C. ruficrus was the dominant parasitoid species, being recovered from 38.5% of the larvae collected and was also the most prevalent species, existing in 91.0% of the fields in whichM. loreyi was found. Total parasitism levels achieved by braconid species was 41.4%, by ichneumonid parasitoids 4.8%, and by tachinid parasitoids 1.9%. In a separate field experiment, seasonal population fluctuations and natural efficiency ofC. ruficrus onM. loreyi were found to be 35.1% and 42.4%, respectively. Population levels ofC. ruficrus were closely related to fluctuations in the population ofM. loreyi, with parasitism ranging between 0 and 77.3% during the study. http://www.phytoparasitica.org posting Aug. 28, 2005.  相似文献   

Feeding preference and intraguild interactions between the parasitoid Trichogramma achaeae and the predator Macrolophus pygmaeus,two biological agents of Tuta absoluta     

Isabel Borges  Luisa Oliveira  Ana Durão  Patricia Arruda  António O. Soares 《Pest management science》2023,79(11):4376-4382

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Sublethal effects of nine insecticides on Drosophila suzukii and its major pupal parasitoid Trichopria drosophilae     

Fabrizio Lisi  Ramzi Mansour  Carmelo Cavallaro  Tuğcan Alınç  Emanuele Porcu  Michele Ricupero  Lucia Zappalà  Nicolas Desneux  Antonio Biondi 《Pest management science》2023,79(12):5003-5014

Background

Although the pupal parasitoid Trichopria drosophilae is used in conservative and augmentative biocontrol of Drosophila suzukii infestations, current pest management strategies mostly rely on multiple insecticide applications. In this context, the aim of the study was to investigate the baseline toxicity of nine insecticides on D. suzukii larvae and their multiple sublethal effects (LC₁₀) on immature stages of the pest feeding on contaminated diet and T. drosophilae developing within the intoxicated host.

Results

Chlorpyriphos and azadirachtin showed the lowest and the highest LC₁₀, the values of which were 9.78 × 10¹³ and 1.46 × 10³ times lower than their recommended label field rate, respectively. Among tested insecticides, imidacloprid, malathion and dimethoate were the only treatments that did not affect the juvenile development time of D. suzukii, while spinosad and the organophosphates chlorpyriphos and dimethoate did not influence fly pupal size. No sublethal effects were recorded on T. drosophilae degree of infestation (DI) and juvenile development time. On the contrary, cyazypyr and dimethoate negatively affected the success of parasitism (SP) and the number of progeny of the pupal parasitoid, in association with malathion for the first parameter and spinosad for the fertility. Compared to the untreated control, more female progeny emerged following azadirachtin exposure, while dimethoate caused the opposite effect. Imidacloprid, lambda-cyhalothrin and spinetoram decreased hind tibia length of emerged parasitoids.

Conclusion

This study provides new insights on the (eco)toxicological profile of nine insecticides and new information needed to support the deployment of T. drosophilae in the field within the sustainable management techniques against D. suzukii. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.  相似文献   

Potential effects of RNA interference of Asian longhorned beetle on its parasitoid     

Xingeng Wang  Jessica Faucher  Ramesh Kumar Dhandapani  Jian J. Duan  Subba Reddy Palli 《Pest management science》2023,79(4):1557-1565

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Attraction ofTrichogramma platneri to eggs of some lepidopterous pests of avocado     

M. Wysoki  M. De Jong 《Phytoparasitica》1989,17(4):315-318

The attraction ofTrichogramma platneri Nagarkatti (Hymenoptera: Trichogrammatidae) to eggs of two lepidopterous avocado pests,Boarmia sel-enaria (Schiffermüller) (Geometridae) andCryptoblabes gnidiella (Millière) (Phycitidae), was evaluated in olfactometer tests. The mobility of the wasp as measured by a mobility index was 0.6 for males and 1.8 for females; the males had a lower mobility and a lower search capacity index than the females. Frozen and fresh youngB. selenaria eggs had the greatest attraction forT. platneri, which diminished with increasing age of the eggs. The eggs ofC. gnidiella were also attractive to the parasitoid. Contribution from the Agricultural Research Organization. No. 2704-E, 1989 series.  相似文献   

美洲斑潜蝇与南美斑潜蝇的寄生蜂自然控害能力的调查   总被引：2，自引：2，他引：2  

王淑贤  李学军  郑国  张广学  邢星  李艳 《中国植保导刊》2005,25(6):5-7

经对辽宁省岫岩蔬菜区美洲斑潜蝇和南美斑潜蝇的寄生蜂及其寄生情况的初步调查,结果表明,这两种斑潜蝇的寄生蜂有9种。其中优势种群有潜蝇姬小蜂和茧蜂科的种类3种以上。在蔬菜田不用杀虫剂的情况下,寄生蜂6月中旬后迅速上升,7月份对两种斑潜蝇的寄生率可达75%以上,对斑潜蝇种群具有明显的控制作用,可使夏、秋季田间两种斑潜蝇种群迅速下降,一般不需防治。  相似文献   

<Emphasis Type="Italic">Dittrichia viscosa</Emphasis> and<Emphasis Type="Italic">Rubus ulmifolius</Emphasis> as reservoirs of aphid parasitoids (Hymenoptera: Braconidae: Aphidiinae) and the role of certain Coccinellid species     

Nickolas?G.?KavallieratosEmail author  George?J.?Stathas  Christos?G.?Athanassiou  George?Th.?Papadoulis 《Phytoparasitica》2002,30(3):231-242

The role of the self-sown shrubsDittrichia viscosa (L.) W. Greuter andRubus ulmifolius Schott as reservoirs of aphid parasitoids was investigated. In the field studies conducted,D. viscosa grew adjacent to crops of durum wheat and barley andR. ulmifolius grew adjacent to cotton. The relative abundance of the parasitoids of(a) Capitophorus inulae (Passerini) onD. viscosa, (b) Rhopalosiphum padi (Linnaeus) on durum wheat and barley,(c) Aphis ruborum (Börner) onR. ulmifolius, and(d) Aphis gossypii Glover on cotton in various parts of Greece, was assessed during the years 1996–2000. In 2000, the fluctuation of parasitization of the above four aphid species was recorded and the action of the aphidophagous predators of the family Coccinellidae was studied. It was observed thatAphidius matricariae Haliday predominated onC. inulae andR. padi in all sampling cases. In contrast,Lysiphlebus fabarum (Marshall) was the dominant species parasitizingA. ruborum onR. ulmifolius andA. gossypii on cotton in Thessaly (central Greece) and Macedonia (northern Greece), whereasLysiphlebus confusus Tremblay et Eady andBinodoxys acalephae (Marshall) were the dominant parasitoid species in Thrace (northern Greece).Coccinella septempunctata Linnaeus was the most abundant coccinellid species on durum wheat, whereasAdonia variegata (Goeze) predominated on cotton. However, coccinellid individuals were scarce on bothD. viscosa andR. ulmifolius. The present study indicated that these two shrubs can be regarded as useful reservoirs of aphid parasitoids.  相似文献   

福建果树新害虫——梨圆蚧及其寄生性天敌     

黄建  罗肖南  于卫闽  魏邦仲  伊佳民  曾水盛 《福建农林大学学报(自然科学版)》1996,(3)

本文首次报道梨圆蚧Ｑｕａｄｒａｓｐｉｄｉｏｔｕｓｐｅｒｎｉｃｉｏｓｕｓ（Ｃｏｍｓｔｏｃｋ）在福建省的发生危害．福建名果黄花梨主产区建宁县此虫发生相当严重，１ａ４－５代，世代重叠．以２龄若虫和少数雌成虫在梨树枝干上越冬，越冬的２龄若虫于３月间开始活动，越冬雌成虫４月上、中旬开始产子．５月中、下旬为第１代１龄若虫发生高峰期，是梨圆蚧药剂防治的关键时期．寄生性天敌已知有１３种，以梨圆蚧恩蚜小蜂Ｅｎｃａｒｓｉａｐｅｒｎｉｃｉｏｓｉ（Ｔｏｗｅｒ）和长缨恩蚜小蜂Ｅ．ｃｉｔｒｉｎａ（Ｃｒａｗ）为优势种群，分别占寄生峰群体的４７．５％和３２．３％．寄生蜂对梨圆蚧的２龄若虫有寄生嗜好，其寄生率占各虫态被寄生总体的６０．９％，一年中９月份寄生率最高，可达２０％，一般在１０％左右  相似文献   

昆明地区桔绵蜡蚧天敌昆虫种类研究初报     

陈国华  陶玫  杨本立  谷勇 《云南农业大学学报(自然科学版)》2003,18(4):416-418

 桔绵蜡蚧(Pulvinaria citricola Kuwana)有捕食性天敌昆虫2种, 隶属于鞘翅目的瓢虫科; 寄生性天敌昆虫有8种,隶属于膜翅目小蜂总科的跳小蜂科和蚜小蜂科,其中日本食蚧蚜小蜂(Coccophagus japonicus Compere)为桔绵蜡蚧的主要寄生蜂,其数量占寄生蜂总数的71.2％,其数量变化将影响寄生蜂的整体消长变化。寄生蜂对桔绵蜡蚧的寄生率为40%.  相似文献   

小菜蛾寄生性天敌研究及引进利用进展   总被引：3，自引：0，他引：3  

陈宗麒  谌爱东  缪森  罗开珺  梁谊 《云南农业大学学报(自然科学版)》2001,16(4):308-312

 就小菜蛾寄生性天敌种类研究及主要寄生蜂引进利用进展进行了综述。寄生性昆虫种类109种,其中卵期寄生蜂5种,幼虫期寄生蜂81种,蛹期寄生蜂23种。对小菜蛾主要寄生蜂的应用前景进行了初步评价。  相似文献