Plant oils as oviposition deterrents against winterform females of pear psylla, Cacopsylla pyri (L.) (Hemiptera: Psyllidae)

2017 ◽  
Vol 45 (4) ◽  
pp. 509-515 ◽  
Author(s):  
Fedai Erler ◽  
Hilal Sule Tosun
Keyword(s):  
Plant Oils ◽  
Oviposition Deterrents ◽  
Cacopsylla Pyri ◽  
Pear Psylla

Selection for monocrotophos resistance in pear psylla,Cacopsylla pyri(L.) (Hom., Psyllidae)

1995 ◽  
Vol 119 (1-5) ◽  
pp. 507-510 ◽  
Author(s):  
S. Berrada ◽  
T. X. Nguyen ◽  
D. Merzoug ◽  
D. Fournier
Keyword(s):  
Cacopsylla Pyri ◽  
Pear Psylla ◽  
Selection For

Laboratory Evaluation of Larvicidal and Oviposition Deterrent Properties of Edible Plant Oils for Potential Management of Aedes aegypti (Diptera: Culicidae) in Drinking Water Containers

2019 ◽  
Vol 56 (4) ◽  
pp. 1055-1063
Author(s):  
Teresia M Njoroge ◽  
May R Berenbaum
Keyword(s):  
Linoleic Acid ◽  
Aedes Aegypti ◽  
Acid Content ◽  
Edible Oils ◽  
Linoleic Acid Content ◽  
Laboratory Evaluation ◽  
Plant Oils ◽  
Edible Plant ◽  
Oviposition Deterrents ◽  
Olive Oils

Abstract The yellow fever mosquito, Aedes aegypti (Diptera: Culicidae) transmits several devastating arboviruses, including dengue, chikungunya, and Zika virus, making development of inexpensive and eco-friendly strategies for its control an urgent priority. We evaluated the lethality of 13 commonly used plant-derived edible oils against late-third instar Ae. aegypti and then tested the three most lethal oils for stage-specific differences in lethality. We also examined the effects of the most lethal (hempseed), moderately lethal (sunflower and peanut), and least lethal (olive) oils on survival to adulthood and oviposition behavior of gravid females. We hypothesized that the insecticidal activity of edible oils is a function of the content of their linoleic acid, a key fatty acid component with film-forming properties. Among the 13 oils tested, hempseed oil was the most lethal, with an LC50 of 348.25 ppm, followed by sesame (670.44 ppm) and pumpkinseed (826.91 ppm) oils. Oils with higher linoleic acid content were more lethal to larvae than those with low linoleic acid content. Furthermore, pure concentrated linoleic acid was more lethal to larvae compared to any edible oil. In comparison to early instars, late instars were more susceptible to hempseed, sunflower, peanut, and olive oils; these oils also acted as oviposition deterrents, with effective repellency ≥63%. The proportion of larvae surviving to adulthood was significantly reduced in hempseed, sunflower, peanut, and olive oil treatments relative to controls. Our results suggest that some edible plant oils have potential as effective, eco-friendly larvicides, and oviposition deterrents for controlling container-dwelling mosquitoes, especially in resource-limited settings.

scholarly journals Efficacy of Spirotetramat in the Control of Pear Psylla (Cacopsylla Pyri L.) on Pear Trees in Poland

2012 ◽  
Vol 20 (2) ◽  
pp. 91-106 ◽  
Author(s):  
Krystyna Jaworska ◽  
Remigiusz W. Olszak ◽  
Barbara H. Łabanowska ◽  
Mirosław Korzeniowski
Keyword(s):  
Field Experiments ◽  
Early Stage ◽  
Single Application ◽  
Pest Population ◽  
Total Reduction ◽  
Cacopsylla Pyri ◽  
Summer Generation ◽  
Pear Psylla ◽  
Pear Trees ◽  
Very High

Abstract The effectiveness of spirotetramat in the control of pear psylla (Cacopsylla pyri) on pear trees was investigated in five field experiments, carried out in years 2009- 2011. One or two treatments were applied in June; the first treatment in the early stage of larvae hatching from eggs deposited by females from the summer generation, whilst the second application was carried out about two weeks later. In all the experiments, spirotetramat as Movento 100 SC applied at a dose of 2.25 l/ha effectively reduced the pest population after only a single application (total reduction of larvae after one week post-treatment 75.3-91.4%, and 83.7-97.6% at two weeks posttreatment). Movento 100 SC applied after a single application at a lower dose of 1.8 l/ha had a slightly worse effect (the total reduction of larvae at one week posttreatment was at the level of 58.4-91.3%, and two weeks after application at the level of 56-92.6%) - but in this case only a few larvae at stages L4 and L5 were found on pear shoots. The effectiveness of spirotetramat at both doses after two applications was very high.In comparison with standard insecticides the efficacy of spirotetramat was higher or not significantly different. In two experiments the application of standard compounds such as diflubenzuron and novaluron was not effective in controlling pear psylla and therefore did not prevent damage to pear trees. This may suggest that local populations of the pest are resistant to these measures, especially since they have been used for many years to control other pests of pear trees

Phenological model of pear psylla Cacopsylla pyri

2005 ◽  
Vol 117 (2) ◽  
pp. 105-111 ◽  
Author(s):  
L. Schaub ◽  
B. Graf ◽  
A. Butturini
Keyword(s):  
Phenological Model ◽  
Cacopsylla Pyri ◽  
Pear Psylla

Detecting Cacopsylla pyricola (Hemiptera: Psyllidae) in predator guts using COI mitochondrial markers

2003 ◽  
Vol 93 (3) ◽  
pp. 179-185 ◽  
Author(s):  
N. Agustí ◽  
T.R. Unruh ◽  
S.C. Welter
Keyword(s):  
Molecular Markers ◽  
North America ◽  
Instar Nymph ◽  
Close Relative ◽  
Sensitivity Threshold ◽  
Mitochondrial Markers ◽  
Cacopsylla Pyri ◽  
Arthropod Predators ◽  
Representative Species ◽  
Pear Psylla

AbstractCacopsylla pyricola (Förster) is one of the most important pests of pear in North America, where several native predators have been considered for integrated pest management (IPM) programmes. Two molecular markers of 271 and 188 bp were developed from C. pyricola cytochrome oxidase I (COI) fragments, in order to study the detection of this species in the gut of arthropod predators. Primer sensitivity and the detection period for pear psylla remains in the guts of Anthocoris tomentosus Pericart were determined. The sensitivity threshold was defined at 10-5 dilution of a C. pyricola fifth-instar nymph in all samples. Predator adults were evaluated immediately after ingestion of one to five C. pyricola nymphs (t = 0) and after 2, 4, 6, 8, 16, 24 and 32 h. Detection of the presence of C. pyricola DNA always lasted longer using the shorter fragment and was observed after 32 h of digestion using both markers. The primers amplifying the 188 bp fragment amplified all four psyllid species tested, whereas the primers designed to amplify the 271 bp fragment did so exclusively for C. pyricola and its close relative, Cacopsylla pyri (Linnaeus). Both primers failed to amplify DNA from representative species of the Coccinellidae, Chrysopidae, Hemerobiidae, Anthocoridae, Miridae, Salticidae, Aphididae, Tetranychidae and the Tortricidae, suggesting their suitability for general trophic studies.

Polyphenolic Profile of Pear Leaves with Different Resistance to Pear Psylla (Cacopsylla pyri)

2015 ◽  
Vol 63 (34) ◽  
pp. 7476-7486 ◽  
Author(s):  
Milica M. Fotirić Akšić ◽  
Dragana Č. Dabić ◽  
Uroš M. Gašić ◽  
Gordan N. Zec ◽  
Todor B. Vulić ◽  
...  
Keyword(s):  
Cacopsylla Pyri ◽  
Pear Psylla ◽  
Polyphenolic Profile
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