DDT and the Woolly Apple Aphid Parasite Aphelinus mali

1947 ◽  
Vol 40 (6) ◽  
pp. 934-934 ◽  
Author(s):  
M. A. Yothers
Keyword(s):  
Woolly Apple Aphid ◽  
Aphelinus Mali ◽  
Aphid Parasite

The Toxicity of Some Pesticides to the Woolly Apple Aphid Parasite, Aphelinus mali

PANS ◽  
1978 ◽  
Vol 24 (2) ◽  
pp. 109-110
Author(s):  
H. S. El-Haidari ◽  
R. Georgis
Keyword(s):  
Woolly Apple Aphid ◽  
Aphelinus Mali ◽  
Aphid Parasite

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 Biocontrol of pests in apples under integrated fruit production

2008 ◽  
Vol 61 ◽  
pp. 333-337 ◽  
Author(s):  
P.W. Shaw ◽  
D.R. Wallis
Keyword(s):  
Natural Enemies ◽  
Fruit Production ◽  
Aphid Parasitoid ◽  
Woolly Apple Aphid ◽  
European Red Mite ◽  
Aphelinus Mali ◽  
Integrated Fruit Production ◽  
Selective Insecticide ◽  
Orchard Pests ◽  
Insecticide Sprays

The biological control of some key orchard pests achieved within an Integrated Fruit Production (IFP) apple block was assessed Insecticide sprays were used to manipulate the numbers of natural enemies Treatments included applications of the broadspectrum insecticide carbaryl a selective insecticide programme (IFP) and a control (no insecticides) Plots treated with carbaryl became heavily infested with woolly apple aphid and European red mite However carbaryl sprays did not completely prevent lacewings ladybirds and the woolly apple aphid parasitoid Aphelinus mali subsequently moving into the plots in response to the high host populations Numbers of some natural enemies were reduced in the carbaryl treatment and the trees were damaged by mites and woolly apple aphids The selective and noinsecticide programmes did not disrupt natural enemies and pest levels in trees and fruit were similar and acceptable

scholarly journals Vulnerability of pest management in New Zealand apples pesticide toxicity to Aphelinus mali (Hymenoptera Encyrtidae)

2015 ◽  
Vol 68 ◽  
pp. 299-305 ◽  
Author(s):  
D.J. Rogers ◽  
P.L. Lo ◽  
J.T.S. Walker
Keyword(s):  
Pest Management ◽  
Management Practices ◽  
Mating Disruption ◽  
Fruit Production ◽  
Woolly Apple Aphid ◽  
Aphelinus Mali ◽  
Aphid Control ◽  
Pest Outbreaks ◽  
Integrated Fruit Production ◽  
Selective Insecticides

New pest management practices in New Zealands apple sector have provided ecological and economic outcomes that are recognised by growers and exporters Integrated Fruit Production (IFP) pest control systems that combine biological control selective insecticides and mating disruption have been developed to achieve these outcomes Although pest management in apple orchards is now more sustainable it is also highly vulnerable to pesticideinduced disruption The toxicity of four pesticides (spinetoram thiacloprid spinosad and spirotetramat) on the natural enemy of woolly apple aphid Aphelinus mali was examined While applications of spinetoram were the primary cause of aphid outbreaks in 200708 other insecticides can contribute to the instability of this biocontrol system The consequences of applying these disruptive pesticides to aphid control are discussed together with strategies to mitigate the vulnerability of the IFP programme to pest outbreaks

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>

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