scholarly journals Antifeedant, contact toxicity and oviposition deterrent effects of phyllostine acetate and phyllostine isolated from the endophytic fungus Diaporthe miriciae against Plutella xylostella larvae

2019 ◽  
Vol 76 (4) ◽  
pp. 1541-1548 ◽  
Author(s):  
Pamoda B Ratnaweera ◽  
J M Nisansala M Jayasundara ◽  
H H M Suseema D Herath ◽  
David E Williams ◽  
Sasini U Rajapaksha ◽  
...  
Keyword(s):  
Plutella Xylostella ◽  
Endophytic Fungus ◽  
Oviposition Deterrent ◽  
Contact Toxicity

scholarly journals Production of Natural Insecticide on Management of Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae) in Family Farming

2021 ◽  
Vol 13 (7) ◽  
pp. 47
Author(s):  
Cristiane G. L. Ruiz ◽  
Marilza S. Costa ◽  
Santino Seabra Jr ◽  
Mônica J. B. Pereira
Keyword(s):  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Farming Systems ◽  
Oviposition Deterrent ◽  
Family Farming ◽  
Collard Greens ◽  
The Third ◽  
First Instar ◽  
Natural Insecticide ◽  
Deterrent Activity

Collard greens are commonly grown in family farming systems; however, damage caused by the diamondback moth Plutella xylostella (Lepidoptera: Plutellidae) reduces yields, leading to successive applications of insecticides and consequently, environmental and toxicological problems. Therefore, it is essential to search for alternatives that reduce the use of pesticides and are economically viable and accessible to small farmers. This study was aimed at evaluating the insecticidal activity of aqueous extracts of neem and tobacco on P. xylostella. First instar caterpillars were offered collard leaf discs treated with different concentrations (30 caterpillars per treatment) and after the third day, mortality was evaluated. To evaluate ovicidal properties, collard leaves with 30 eggs were immersed in extracts and after 48 h, viability was measured. Oviposition deterrent activity was assessed with 23 couples of P. xylostella released in cages (repetitions) containing treated collard plants and after 48 h, the number of eggs per plant was recorded. Neem and tobacco extracts exhibited larvicidal, ovicidal, and oviposition deterrent properties against P. xylostella, indicating that the use of these extracts may be promising alternatives in family farming systems.

Opuntia ficus-indica cladode extract is an embryotoxic, larvicidal, and oviposition-deterrent agent for the diamondback moth, Plutella xylostella

2021 ◽  
Vol 139 ◽  
pp. 105351
Author(s):  
Elaine Cristina Batista Ferrreira ◽  
Isabella Coimbra Vila Nova ◽  
Welton Aaron de Almeida ◽  
Francieli Marcelino dos Santos Albuquerque ◽  
Glaucilane dos Santos Cruz ◽  
...  
Keyword(s):  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Oviposition Deterrent ◽  
Opuntia Ficus Indica

REPELLENT AND OVIPOSITION DETERRENT ACTIVITIES OF THE ESSENTIAL OIL FROM MIKANIA MICRANTHA AND ITS COMPOUNDS ON PLUTELLA XYLOSTELLA

2004 ◽  
Vol 11 (1) ◽  
pp. 37-45 ◽  
Author(s):  
Mao-xin Zhang ◽  
Bing Ling ◽  
Shao-ying Chen ◽  
Guang-wen Liang ◽  
Xiong-fei Pang
Keyword(s):  
Essential Oil ◽  
Plutella Xylostella ◽  
Oviposition Deterrent ◽  
Mikania Micrantha

scholarly journals Virulence of the plant-associated endophytic fungus Lecanicillium muscarium to diamondback moth larvae

2019 ◽  
Vol 72 ◽  
pp. 253-259 ◽  
Author(s):  
Michal Kuchár ◽  
Travis R. Glare ◽  
John G. Hampton ◽  
Ian A. Dickie ◽  
Mary C. Christey
Keyword(s):  
Biological Control ◽  
New Zealand ◽  
Endophytic Fungi ◽  
Plutella Xylostella ◽  
Endophytic Fungus ◽  
Diamondback Moth ◽  
Biological Control Agents ◽  
Control Applications ◽  
Lecanicillium Muscarium ◽  
Fungal Isolates

Plutella xylostella (diamondback moth) is a prominent pest of brassicas which is now resistant to most insecticides. Despite years of research, the range of available products used in biological control of diamondback moth is still somewhat limited. We isolated putative endophytic fungi from New Zealand cabbage plants to search for unique biological control agents of diamondback moth larvae. The larvae were fed leaf discs from commercially grown cabbage covered in spores from endophytic fungal isolates to test the insecticidal properties of these fungi. Twenty of the 52 fungal isolates tested failed to kill any diamondback moth larvae. However, three isolates of Lecanicillium muscarium induced mortality greater than 80%. While these isolates have potential for use in biological control applications, further research into propagation, formulation, and method, rate and timing of application is needed.

scholarly journals Isolation and Insecticidal Activity of Essential Oil from Artemisia lavandulaefolia DC. against Plutella xylostella

Toxins ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 842
Author(s):  
Xing Huang ◽  
Yulin Huang ◽  
Chunyue Yang ◽  
Tiantian Liu ◽  
Xing Liu ◽  
...  
Keyword(s):  
Biological Activity ◽  
Essential Oil ◽  
Insecticidal Activity ◽  
Plutella Xylostella ◽  
Chemical Constituents ◽  
Lethal Dose ◽  
Detoxification Enzymes ◽  
Contact Toxicity ◽  
Caryophyllene Oxide ◽  
Active Constituents

Many plants show significant biological activity against pests due to their unique chemical constituents. It is important to identify effective constituents for their development and utilization as botanical pesticides. Our previous study showed that Artemisia lavandulaefolia essential oil had biological activity against Plutella xylostella. Here, we isolated and identified the constituents of essential oil from A. lavandulaefolia by silica gel column chromatography. The main constituents identified were eucalyptol and caryophyllene oxide, and they were confirmed by gas chromatography–mass spectrometry (GC–MS). Eucalyptol and caryophyllene oxide showed strong contact toxicity against P. xylostella larvae after 24 h of application (Median lethal dose, LD50 = 76.97 μL/mL and 20.71 mg/mL. Furthermore, the two active constituents against P. xylostella adults showed significant fumigant activity (Mmedian lethal concentration, LC50 = 3.25 μL/L and 1.06 mg/L, respectively. Finally, we measured the detoxification enzymes and acetylcholinesterase of the larvae treated with active constituents. The eucalyptol-treated larvae displayed enhanced carboxylesterase (CarE) and glutathione-S-transferase (GST) activities in an in vivo experiment, but it was lower for acetylcholinesterase (AchE) activity. The activities of the CarE and GST significantly decreased when exposed to caryophyllene oxide. In general, the two active constituents, eucalyptol and caryophyllene oxide, showed high insecticidal activity, which demonstrates their potential to be used as natural insecticides.

scholarly journals Fumigant and Contact Toxicity and Oviposition Deterrent Effects of Plant Essential Oils onBemisia tabaci(Hemiptera: Aleyrodidae)

2016 ◽  
Vol 99 (4) ◽  
pp. 673-677 ◽  
Author(s):  
Tufail Ahmed Wagan ◽  
Yueping He ◽  
Wanlun Cai ◽  
Jing Zhao ◽  
Hongxia Hua
Keyword(s):  
Essential Oils ◽  
Oviposition Deterrent ◽  
Contact Toxicity ◽  
Plant Essential Oils

scholarly journals Oviposition deterrent activity of andrographolide against the diamondback moth (DBM), Plutella xylostella (Lepidoptera : Yponomeutidae)

1998 ◽  
Vol 33 (2) ◽  
pp. 239-241 ◽  
Author(s):  
Wawan Hermawan ◽  
Ritsuko Tsukuda ◽  
Shuhei Nakajima ◽  
Kenji Fujisaki ◽  
Fusao Nakasuji
Keyword(s):  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Oviposition Deterrent ◽  
Deterrent Activity
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