Evaluation of insecticides against woolly apple aphid Eriosoma lanigerum and its parasitoid Aphelinus mali

2019 ◽  
Vol 81 (3) ◽  
pp. 467
Author(s):  
Vineet Kumar ◽  
Divender Gupta
Keyword(s):  
Eriosoma Lanigerum ◽  
Woolly Apple Aphid ◽  
Aphelinus Mali

Laboratory comparison of twoAphelinus maliclades for control of woolly apple aphid from Hebei Province, China

2017 ◽  
Vol 108 (3) ◽  
pp. 400-405
Author(s):  
M. Su ◽  
X. Tan ◽  
Q. Yang ◽  
C. Zhao ◽  
F. Wan ◽  
...  
Keyword(s):  
Shandong Province ◽  
Hebei Province ◽  
Threshold Temperature ◽  
Host Searching ◽  
Eriosoma Lanigerum ◽  
Developmental Threshold ◽  
Woolly Apple Aphid ◽  
Effective Accumulated Temperature ◽  
Aphelinus Mali ◽  
Accumulated Temperature

AbstractAphelinus mali(Haldeman) is an effective natural enemy of woolly apple aphid (WAA),Eriosoma lanigerum(Hausmann). Previous studies have found that, with WAA from Shandong Province (Qingdao) as the host, there are significant differences in various biological characteristics between a Shandong clade and Liaoning clade ofA. mali. The ability of the Shandong clade to control this aphid was significantly higher than that of the Liaoning clade in Shandong Province. In order to determine whether differences were caused by better adaptation of the Shandong parasitoid clade to the population of the host in that province or if it represents a more general fitness of this clade to control the host regardless of location, we compared the same parasitoid clades with hosts from Hebei Province. We found no significant differences in the developmental threshold temperature, effective accumulated temperature, fecundity, longevity, and oviposition period of the two clades, but the duration of host searching of the Shandong clade was significantly longer than that of the Liaoning clade. The instantaneous attack rate, the control ability (a/Th), the search parameter (Q) of the Shandong clade (0.0946, 0.543, 0.0725) ofA. maliwere higher than that of the Liaoning clade (0.0713, 0.382, 0.0381), and therefore, with WAA from Hebei Province as the host, the host adaptability of the Shandong clade ofA. maliwas not worse than that of the Liaoning clade, while the pest control ability of the Shandong clade was still greater than that of the Liaoning clade.

scholarly journals Comparison of the toxicity and repellency of two conventional neonicotinoids and a coconut-derived insecticide soap toward the parasitoid wasp Aphelinus mali Haldeman, 1851

2020 ◽  
Vol 115 (1) ◽  
pp. 97
Author(s):  
Asgar EBADOLLAHI ◽  
Reza SADEGHI
Keyword(s):  
Biological Control ◽  
Exposure Time ◽  
Biological Control Agent ◽  
Parasitoid Wasp ◽  
Control Agent ◽  
Eriosoma Lanigerum ◽  
Woolly Apple Aphid ◽  
Aphelinus Mali ◽  
The World ◽  
Filter Papers

<p><strong></strong>The parasitoid wasp <em>Aphelinus mali</em>,Haldeman, 1851 (Hymenoptera: Aphelinidae) is the most important biological control agent against the woolly apple aphid,<em> Eriosoma lanigerum</em> (Hausemann, 1802) (Hemiptera: Aphididae), which is an important apple orchards pest throughout the world. Based on the importance of using low-risk compounds to protect beneficial agents, the present study was carried out to evaluate the toxic and repellent effects of two conventional chemicals (imidacloprid and thiacloprid) and coconut-derived biopesticide soap (Palizin<sup>Ò</sup>) toward <em>A. mali</em>. The results of residual bioassays on apple leaf discs indicated that imidacloprid after 24 h and insecticide soap after 72 h exposure time categorized at the highest and no/little toxicity rates, respectively. Ingestion bioassays on filter papers revealed that imidacloprid and thiacloprid had moderate toxicity rate, while insecticide soap had a low-level toxicity rate. Repellency test at Y-tube olfactometer showed that the repellent effects of both chemicals were more than that of insecticide soap. It is concluded that coconut-derived soap was compatible with the parasitoid activity, and the caution should be paid when including the two neonicotinoid insecticides imidacloprid and thiacloprid for <em>E. lanigerum</em> management.</p>

scholarly journals Toxicity of pesticides to Aphelinus mali the parasitoid of woolly apple aphid

2011 ◽  
Vol 64 ◽  
pp. 235-240 ◽  
Author(s):  
D.J. Rogers ◽  
N. Sharma ◽  
D.C. Stretton ◽  
J.T.S. Walker
Keyword(s):  
New Zealand ◽  
Sustainable Management ◽  
Field Application ◽  
Apple Orchards ◽  
Eriosoma Lanigerum ◽  
Laboratory Bioassay ◽  
Woolly Apple Aphid ◽  
Residual Toxicity ◽  
Lime Sulphur ◽  
Aphelinus Mali

The parasitoid Aphelinus mali controls woolly apple aphid (WAA; Eriosoma lanigerum) in New Zealand apple orchards The effects of seven pesticides on A mali exposed to residues on filter paper were assessed in a laboratory bioassay immediately postapplication Spinosad at label rate was moderately to highly toxic but other compounds and lower rates of spinosad had no detrimental effects on A mali Another bioassay incorporating field application and exposure to aged residues on leaves determined the toxicity of carbaryl diazinon indoxacarb and lime sulphur Carbaryl had the greatest residual toxicity to A mali on harvested leaves causing 85 mortality 21 days after application declining to 40 by 28 days In contrast diazinon initially caused high mortality but residues were not toxic 15 days after application while indoxyacarb and lime sulphur were not toxic Minimising the use of pesticides toxic to A mali should benefit the sustainable management of WAA in apple orchards

scholarly journals Parasitism on Eriosoma lanigerum (Homoptera: Aphididae) by Aphelinus mali (Hymenoptera: Encyrtidae) on apple orchards, in Fraiburgo county, state of Santa Catarina, Brazil

2004 ◽  
Vol 26 (3) ◽  
pp. 550-551 ◽  
Author(s):  
Lino Bittencourt Monteiro ◽  
Alexander Souza ◽  
Edson Luiz Belli
Keyword(s):  
Chemical Control ◽  
Apple Orchards ◽  
Southern Brazil ◽  
Eriosoma Lanigerum ◽  
Apple Trees ◽  
Santa Catarina ◽  
Woolly Apple Aphid ◽  
Four Seasons ◽  
Aphelinus Mali ◽  
One Year

The parasitism of the woolly apple aphid (Eriosoma lanigerum Hausmann) by Aphelinus mali (Hald.) was evaluated in apple orchards cultivated with the varieties Gala and Fuji in Fraiburgo County, State of Santa Catarina, Southern Brazil. Colonies of the woolly apple aphid were evaluated during one year on 16 apple trees of each variety, starting in August 1999. The number of aphids at the mummy stage or presenting the orifice of the parasitoid emergence was recorded. Results have shown that A. mali parasitized more than 50% of the woolly apple aphids and occurred during the four seasons. It was concluded that that under these conditions no chemical control against the aphid is necessary for the apple varieties Gala and Fuji.

scholarly journals Woolly apple aphidEriosoma lanigerumHausmann ecology and its relationship with climatic variables and natural enemies in Mediterranean areas

2014 ◽  
Vol 105 (1) ◽  
pp. 60-69 ◽  
Author(s):  
Jaume Lordan ◽  
Simó Alegre ◽  
Ferran Gatius ◽  
M. José Sarasúa ◽  
Georgina Alins
Keyword(s):  
Population Dynamics ◽  
Control Measures ◽  
Climatic Data ◽  
Eriosoma Lanigerum ◽  
Forficula Auricularia ◽  
Woolly Apple Aphid ◽  
Horizontal Migration ◽  
Mediterranean Areas ◽  
Aphelinus Mali ◽  
Winter Temperatures

AbstractA multilateral approach that includes both biotic and climatic data was developed to detect the main variables that affect the ecology and population dynamics of woolly apple aphidEriosoma lanigerum(Hausmann). Crawlers migrated up and down the trunk mainly from spring to autumn and horizontal migration through the canopy was observed from May to August. Winter temperatures did not kill the canopy colonies, and both canopy and root colonies are the source of reinfestations in Mediterranean areas. Thus, control measures should simultaneously address roots and canopy. European earwigsForficula auricularia(Linnaeus) were found to reduce the survival of overwintering canopy colonies up to June, and this can allow their later control by the parasitoidAphelinus mali(Haldeman) from summer to fall. Preliminary models to predict canopy infestations were developed.

Some aspects of insecticidal and biological control of the woolly apple aphid, Eriosoma lanigerum (Hsm.) in Rhodesia

1965 ◽  
Vol 56 (2) ◽  
pp. 269-274 ◽  
Author(s):  
A. J. M. Carnegie
Keyword(s):  
Biological Control ◽  
Active Ingredient ◽  
Cotton Wool ◽  
Eriosoma Lanigerum ◽  
Pheidole Megacephala ◽  
Woolly Apple Aphid ◽  
Emulsifiable Concentrate ◽  
Lower Trunk ◽  
Aphelinus Mali ◽  
Foliage Spray

In insecticide trials in 1962–63 in Rhodesia against woolly apple aphid, Eriosoma lanigerum (Hsm.), no appreciable control was achieved by applying ½ fluid oz. of a 40 per cent, emulsifiable concentrate of dimethoate per tree at 2- to 3-week intervals for 16 weeks in any of the following ways: painted directly on the lower trunk; absorbed in a cotton-wool band applied to the trunk, after being diluted 1:3 in water; applied to a furrow around the stem after being diluted in four gallons of water; injected into the soil with a nematicide injector after being diluted 1:4 in water.A foliage spray of DDT (0·195% active ingredient) had a gradual controlling effect on the aphid and caused no upsurge such as might have occurred had the parasitic activities of Aphelinus mali (Hald.) been suppressed.Activity of the ant Pheidole megacephala (F.) was immediately halted on trees sprayed with DDT and was suppressed on trees the trunks of which were painted with dimethoate and on those banded with a dimethoate-soaked barrier.Over a fourteen-month period, the numbers of living aphid colonies fluctuated before decreasing at the same time as the activity of A. mali intensified.

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