Use of electrical penetration graphs (EPG) and quantitative PCR to evaluate the relationship between feeding behaviour and Pandora neoaphidis infection levels in green peach aphid, Myzus persicae

2018 ◽  
Vol 104 ◽  
pp. 9-14 ◽  
Author(s):  
Chun Chen ◽  
Sudan Ye ◽  
Huajun Hu ◽  
Chengmei Xue ◽  
Xiaoping Yu
Keyword(s):  
Quantitative Pcr ◽  
Myzus Persicae ◽  
Feeding Behaviour ◽  
Green Peach Aphid ◽  
Electrical Penetration Graphs ◽  
Pandora Neoaphidis ◽  
The Relationship

Incidence of Pandora neoaphidis (Remaudière and Hennebert) Humber (Zygomycetes: Entomophthorales) in the Myzus persicae (Sulzer) Complex (Homoptera: Aphididae) on Three Species of Brassica in the Fall and Winter

2001 ◽  
Vol 36 (2) ◽  
pp. 152-161 ◽  
Author(s):  
Surendra K. Dara ◽  
Paul J. Semtner
Keyword(s):  
Myzus Persicae ◽  
Host Plants ◽  
Green Peach Aphid ◽  
Average Level ◽  
Low Levels ◽  
Pandora Neoaphidis ◽  
Aphid Pathogen ◽  
Tobacco Aphid

The incidence of the aphid pathogen, Pandora neoaphidis (Remaudière & Hennebert) Humber, was monitored in populations of the Myzus persicae (Sulzer) complex (green peach aphid, M. persicae, and the tobacco aphid, M. nicotianae Blackman) on fall-planted cabbage, spinach-mustard, and turnip from 1993 to 1996. Each fall, the pathogen occurred at moderate levels in M. persicae complex on all three hosts. Average level of mycoses on the three host plants ranged from 10.0 to 14.3% in 1993, from 5.9 to 10.1% in 1994, and from 7.9 to 17.4% in 1995. Each year, the highest incidence of the pathogen in aphids on turnip and spinach-mustard was 20 to 25%, while the incidence on cabbage was 12 to 19%. In 1995 and over the 3 yrs combined, the levels of mycoses were significantly higher (P ≤ 0.05) in aphids on turnip and spinach-mustard than on cabbage. Trends were similar in 1993 and 1994, but differences were not significant. Very low numbers of healthy aphids (<2 per 5 plants in 1994 to 5 aphids per 5 plants in late April 1996) and those infected with or killed by P. neoaphidis occurred on turnip, cabbage, and spinach-mustard from Jan to May. The M. persicae complex was significantly more abundant on cabbage than it was on spinach-mustard or turnip. The pathogen overwinters at very low levels in cadavers of M. persicae complex on Brassica.

Green peach aphid and potato leafroll virus: transmission and control

2020 ◽  
Author(s):  
R.A. Bagrov ◽  
◽  
V.I. Leunov
Keyword(s):  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Virus Transmission ◽  
Potato Leafroll Virus ◽  
Factors Affecting ◽  
Potato Viruses ◽  
Tuber Necrosis ◽  
Aphid Vectors ◽  
Leafroll Virus ◽  
And Control

The mechanisms of transmission of potato viruses from plants to aphid vectors and from aphids to uninfected plants are described, including the example of the green peach aphid (Myzus persicae, GPA). Factors affecting the spreading of tuber necrosis and its manifestation on plants infected with potato leafroll virus (PLRV) are discussed. Recommendations for PLRV and GPA control in the field are given.

scholarly journals Insecticidal activity of citronella grass essential oil on Frankliniella schultzei and Myzus persicae

2013 ◽  
Vol 37 (2) ◽  
pp. 138-144 ◽  
Author(s):  
Patrícia Fontes Pinheiro ◽  
Vagner Tebaldi de Queiroz ◽  
Vando Miossi Rondelli ◽  
Adilson Vidal Costa ◽  
Tiago de Paula Marcelino ◽  
...  
Keyword(s):  
Essential Oil ◽  
Insecticidal Activity ◽  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Economic Losses ◽  
Frankliniella Schultzei ◽  
Wide Range ◽  
Citronella Grass

The thrips, Frankliniella schultzei, and green peach aphid, Myzus persicae, cause direct damage to plants of economic importance and transmit phytoviruses, causing large economic losses. Chemical constituents of essential oils present a wide range of biological activities. The aim of this work was to evaluate insecticidal activity of essential oil from citronella grass, Cymbopogon winterianus, on F. schultzei and M. persicae. This essential oil was obtained by steam distillation and components were identified by GC/FID and GC/MS. A Potter spray tower was used to spray insects with the essential oil. The major constituents are geraniol (28.62%), citronellal (23.62%) and citronellol (17.10%). Essential oil of C. winterianus at 1% (w v-1) causes mortality in F. schultzei and M. persicae at 34.3% and 96.9%, respectively. The LC50 value for M. persicae was 0.36% and LC90 0.66%. Thus, citronella grass essential oil at 1% (w v-1) is more toxic to M. persicae than F. schultzei. This essential oil shows promise for developing pesticides to manage M. persicae.

The Relationship between Fecundity and Adult Weight in Myzus persicae

10.2307/4235 ◽  
1980 ◽  
Vol 49 (3) ◽  
pp. 917 ◽  
Author(s):  
R. A. Kempton ◽  
H. J. B. Lowe ◽  
E. J. B. Bintcliffe
Keyword(s):  
Myzus Persicae ◽  
Adult Weight ◽  
The Relationship

Influence of selected plant amines on probing behaviour of bird cherry-oat aphid (Rhopalosiphum padi L.)

2016 ◽  
Vol 106 (3) ◽  
pp. 368-377 ◽  
Author(s):  
C. Sempruch ◽  
S. Goławska ◽  
P. Osiński ◽  
B. Leszczyński ◽  
P. Czerniewicz ◽  
...  
Keyword(s):  
Feeding Behaviour ◽  
Rhopalosiphum Padi ◽  
Plant Defence ◽  
Study Results ◽  
Electrical Penetration Graphs ◽  
Defence Responses ◽  
Plant Defence Responses ◽  
Common Plant ◽  
Probing Behaviour

AbstractThe study aimed to quantify the influence of common plant polyamines and tyramine on probing behaviour in the bird cherry-oat aphid (Rhopalosiphum padi L.). Electrical penetration graphs (DC) were used to monitor the probing and feeding behaviour of R. padi exposed to the amines agmatine, cadaverine, putrescine, spermidine, spermine and tyramine. The study results showed that the analyzed amines tended to shorten the stylet activity of aphids in the gels (as indicated by the g-C pattern), prolong the duration of non-probing behaviour (g-np pattern) and decrease salivation into the gels (g-E1pattern) and ingestion from the gels (g-G pattern). The 10 mM concentration of the studied amines, especially cadaverine, reduced or completely inhibited aphid ingestion. The obtained results demonstrate that plant amines participate in plant defence responses to R. padi through disturbance of its probing behaviour and the intensity of such effects is concentration dependent.

STUDY REGARDING THE APHIDOFAGOUS FAUNA STRUCTURE IN THE PEACH ORCHARDS FROM CONSTANTA COUNTY IN 2020

2020 ◽  
Vol 13 ◽  
pp. 110-114
Author(s):  
Andrei Chiriloaie-Palade ◽  
Mădălina Radulea ◽  
Gheorghe Lămureanu ◽  
Ștefan Ion Mocanu ◽  
Maria Iamandei
Keyword(s):  
Myzus Persicae ◽  
Management System ◽  
Green Peach Aphid ◽  
Aphid Species ◽  
Insect Species ◽  
Essential Component ◽  
Intensive Use ◽  
Predatory Insect ◽  
Predatory Insects ◽  
Aphid Populations

"The cosmopolitan aphid species Myzus persicae is a key pest of peach orchards in south and southeastern Romania. The phenomenon of resistance induced by the intensive use of insecticides is a matter of concern for farmers and protectionists, making necessary integrated measure for the control of this pest. Conservation of natural enemy’s populations is an essential component of any management system proposed for pest aphids. The aim of the study was to determine the structure of predatory insects associated with Myzus persicae populations in peach orchards. The research was carried out in three orchards from two localities from Constanta County, in peach plantations with Springcrest variety aged 7, 11 and 12 years. As a result of this study, there were determined a total of 15 predatory insect species belonging to eight systematic families: Coccinellidae, Chrysopidae, Hemerobiidae, Syrphydae, Cecidomyiidae, Panorpidae, Nabidae and Forficulidae, which naturally contribute to the reduction of the green peach aphid populations. "

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