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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1007/s10646-011-0704-3
|2 doi
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|a pubmed25n0696.xml
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|a eng
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|a Saber, Moosa
|e verfasserin
|4 aut
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|a Acute and population level toxicity of imidacloprid and fenpyroximate on an important egg parasitoid, Trichogramma cacoeciae (Hymenoptera
|b Trichogrammatidae)
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 14.10.2011
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|a Date Revised 20.10.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a One focus of integrated pest management (IPM) is the use of biological and chemical control in an optimal way. The availability of selective pesticides is important as is information about both lethal and sublethal effects of pesticides on biocontrol agents. Acute and sublethal effects of imidacloprid and fenpyroximate exposure were studied on adult stage of egg parasitoid Trichogramma cacoeciae Marchal and the emergence rate and life table parameters were determined. The adult wasps were exposed to field recommended concentration (FRC) of the pesticides on glass plates. Field rates of imidacloprid and fenpyroximate caused 100 and 32% adult mortality, respectively. Based on concentration-response experiments, the LC(50) values of imidacloprid and fenpyroximate were 6.25 and 1,949 ppm, respectively. The effect of imidacloprid and fenpyroximate on larvae, prepupae and pupae of the parasitoid was tested by exposing parasitized eggs of Sitotroga cerealella Olivier or Cydia pomonella L. to the FRC. Imidacloprid and fenpyroximate reduced adult emergence by 10.7 and 29%, respectively, when S. cerealella eggs were used as the host and 10.9 and 24.9%, respectively, when C. pomonella eggs were used as the host. Population parameters of emerged adults from treated pre-imaginal stages by FRC of the pesticides were also studied. The parameters were longevity and progeny production of emergent adults and also intrinsic rate of increase (r ( m )), generation time (T) and doubling time (DT). Longevity and progeny production of the emergent adults was not affected by pesticide exposure in comparison to the control. In addition, none of population parameters such as r ( m ), T and DT were affected by pesticide exposure. The intrinsic rate of increase for the control, fenpyroximate and imidacloprid exposed populations were 0.388, 0.374, and 0.372 female offspring per female per day, respectively. Overall, results of this study suggest a relative compatibility between fenpyroximate and T. cacoeciae, but imidacloprid showed deleterious effects on adults of the parasitoid
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|a Journal Article
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|a Benzoates
|2 NLM
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|a Imidazoles
|2 NLM
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|a Insecticides
|2 NLM
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|a Neonicotinoids
|2 NLM
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| 650 |
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|a Nitro Compounds
|2 NLM
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| 650 |
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|a Pyrazoles
|2 NLM
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| 650 |
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|a imidacloprid
|2 NLM
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| 650 |
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|a 3BN7M937V8
|2 NLM
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| 650 |
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|a fenpyroximate
|2 NLM
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| 650 |
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|a 9W557V4RYA
|2 NLM
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| 773 |
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|i Enthalten in
|t Ecotoxicology (London, England)
|d 1998
|g 20(2011), 6 vom: 21. Aug., Seite 1476-84
|w (DE-627)NLM098212214
|x 1573-3017
|7 nnns
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| 773 |
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|g volume:20
|g year:2011
|g number:6
|g day:21
|g month:08
|g pages:1476-84
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| 856 |
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|u http://dx.doi.org/10.1007/s10646-011-0704-3
|3 Volltext
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|h 1476-84
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