EFFICACY OF ENTOMO-PATHOGENIC FUNGI, MINERAL OIL AND CARBOSULFAN AGAINST THE TWO SPOTTED MITE, TETRANYCHUS URTICAE AND ITS NATURAL ENEMIES IN SOME VEGETABLE CROPS

Abstract Compared with the numerous natural enemies against insect pests that have been identified, the commercialization of natural biological control resources remains very limited. To increase the use of natural enemies for biological control, determining how to improve the low efficacy, slow speed, and high cost of natural enemies is very important. Mediterranean species of The whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodoidea), increasingly threatens many crops in China, and control primarily depends on chemical insecticides. Here, the effect of ethanol extracts from two plants, Agrimonia pilosa (Ledeb) (Rosales: Rosaceae) and Melia azedarach (Linn) (Meliaceae: Melia), on predominant natural enemies of B. tabaci was investigated using a leaf dipping or spraying method. The results showed that the ethanol extract of A. pilosa significantly improved the infectivity of the fungus Isaria javanica (Friedrichs & Bally) (Ascomycota: Hypocreales), and the mortality of whiteflies caused by the combination of fungus (105 spores/mL) with the extract of A. pilosa (2 mg/mL dried powder of A. pilosa containing 0.0942 mg/mL total polyphenols) was 81.6%, which was significantly higher than that caused by the fungus only. However, the ethanol extract of M. azedarach had no effect on fungus infectivity. Additionally, insecticide tolerance of the predator Pardosa pseudoannulata was also significantly improved by the extract of A. pilosa. The longevity of the parasitoid Encarsia formosa was not affected by the extracts. These findings indicate that the extract of A. pilosa played a dual role that included improving pathogenic fungi infectivity and insecticidal tolerance of a predator and thus could be a synergist in the biological control of B. tabaci.

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The olfactive responses of Tetranychus urticae natural enemies in citrus depend on plant genotype, prey presence, and their diet specialization

Journal of Pest Science ◽

10.1007/s10340-019-01107-7 ◽

2019 ◽

Vol 92 (3) ◽

pp. 1165-1177 ◽

Cited By ~ 1

Author(s):

Marc Cabedo-López ◽

Joaquín Cruz-Miralles ◽

Sandra Vacas ◽

Vicente Navarro-Llopis ◽

Meritxell Pérez-Hedo ◽

...

Keyword(s):

Tetranychus Urticae ◽

Natural Enemies ◽

Plant Genotype ◽

Diet Specialization

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The Seasonal Occurrence of the Two Aphid Species, Myzus persicae and Aphis gossypii, and their Natural Enemies on Vegetable Crops in Chinju, Korea

Journal of Asia-Pacific Entomology ◽

10.1016/s1226-8615(08)60101-6 ◽

2001 ◽

Vol 4 (1) ◽

pp. 41-44 ◽

Cited By ~ 10

Author(s):

Pham Thi Vuong ◽

Jinho Kim ◽

Yoohan Song

Keyword(s):

Natural Enemies ◽

Myzus Persicae ◽

Aphis Gossypii ◽

Aphid Species ◽

Seasonal Occurrence ◽

Vegetable Crops

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Biological control of Drosophila suzukii.

CAB Reviews Perspectives in Agriculture Veterinary Science Nutrition and Natural Resources ◽

10.1079/pavsnnr202015054 ◽

2020 ◽

Vol 15 (054) ◽

Author(s):

Xing-eng Wang

Keyword(s):

Biological Control ◽

Natural Enemies ◽

Control Strategies ◽

Pathogenic Fungi ◽

Classical Biological Control ◽

Research Progress ◽

Drosophila Suzukii ◽

Control Programs ◽

Crop Fields ◽

Indigenous Natural Enemies

Abstract Drosophila suzukii (Matsumura) is native to East Asia but has widely established in the Americas and Europe, where it is a devastating pest of soft-skinned fruits. It has a wide host range and these non-crop habitats harbor the fly which then repeatedly reinvades crop fields. Biological control in non-crop habitats could be the cornerstone for sustainable management at the landscape level. Toward this goal, researchers have developed or investigated biological control tactics. We review over 100 studies, conducted in the Americas, Asia and Europe on natural enemies of D. suzukii. Two previous reviews provided an overview of potential natural enemies and detailed accounts on foreign explorations. Here, we provide an up-to-date list of known or evaluated parasitoids, predators and entomopathogens (pathogenic fungi, bacteria, nematodes, and viruses) and summarize research progress to date. We emphasize a systematic approach toward the development of biological control strategies that can stand alone or be combined with more conventional control tools. Finally, we propose a framework for the integrated use of biological control tools, from classical biological control with host-specific Asian parasitoids, to augmentative and conservation biological control with indigenous natural enemies, to the use of entomopathogens. This review provides a roadmap to foster the use of biological control tools in more sustainable D. suzukii control programs.

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Efficacy of five acaricides against the two-spotted spider mite Tetranychus urticae Koch and their side effects on some natural enemies

The Journal of Basic & Applied Zoology ◽

10.1016/j.jobaz.2014.03.001 ◽

2014 ◽

Vol 67 (1) ◽

pp. 13-18 ◽

Cited By ~ 1

Author(s):

Adel A. Abou El-Ela

Keyword(s):

Side Effects ◽

Tetranychus Urticae ◽

Natural Enemies ◽

Spider Mite ◽

Two Spotted Spider Mite ◽

Tetranychus Urticae Koch

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Identification of Entomopathogenic Fungi as Naturally Occurring Enemies of the Invasive Oak Lace Bug, Corythucha arcuata (Say) (Hemiptera: Tingidae)

Insects ◽

10.3390/insects11100679 ◽

2020 ◽

Vol 11 (10) ◽

pp. 679

Author(s):

Marta Kovač ◽

Michał Gorczak ◽

Marta Wrzosek ◽

Cezary Tkaczuk ◽

Milan Pernek

Keyword(s):

Entomopathogenic Fungi ◽

Natural Enemies ◽

Control Strategies ◽

Pathogenic Fungi ◽

Rapid Expansion ◽

Invasive Pest ◽

Pedunculate Oak ◽

Lace Bug ◽

Naturally Occurring ◽

Forested Areas

The oak lace bug (OLB), Corythucha arcuata (Hemiptera: Tingidae), was first identified as an invasive pest in Europe in northern Italy in 2000 and since then it has spread rapidly, attacking large forested areas in European countries. The OLB is a cell sap-sucking insect that is native to North America, with Quercus spp. as its main host. Its rapid expansion, successful establishment in invaded countries, and observations of more damage to hosts compared to native areas are most likely due to a lack of natural enemies, pathogens and competitors. In its native area, various natural enemies of OLBs have been identified; however, little is known about the occurrence and impact of OLB pathogens. None of the pathogenic fungi found on OLBs in natural conditions have been identified until now. In this study, we provide evidence of four entomopathogenic fungi that are naturally occurring on invasive OLBs found in infested pedunculate oak forests in eastern Croatia. On the basis of their morphology and multilocus molecular phylogeny, the fungi were identified as Beauveria pseudobassiana, Lecanicillium pissodis, Akanthomyces attenuatus and Samsoniella alboaurantium. The sequences generated for this study are available from GenBank under the accession numbers MT004817-MT004820, MT004833-MT004835, MT027501-MT27510, and MT001936-MT0011943. These pathogenic species could facilitate biological control strategies against OLBs.

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