The action of some systemic aphicides on the eggs of <i>Anthocoris nemorum</i> (L.) and <i>A. confusus</i> Reut

Elliott, W. M.; Way, M. J.

doi:10.1111/j.1744-7348.1968.tb02817.x

Cited by 11 publications

(11 citation statements)

References 23 publications

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“…Anthocorid predators have been shown to take up systemic insecticides from plants during feeding activities, with subsequent increases in mortality occurring in some instances (Elliott, 1970). Moreover, many predatory Heteroptera insert their eggs directly into plant tissues where they may be susceptible to systemic pesticides (Elliott & Way, 1968). Virtually no immature Heteroptera were seen in the aldicarb-treated plots.…”

Section: Discussionmentioning

confidence: 99%

Comparative efficacy of Beauveria bassiana, Bacillus thuringiensis, and aldicarb for control of Colorado potato beetle in an irrigated desert agroecosystem and their effects on biodiversity

Lacey¹,

Horton²,

Chauvin³

et al. 1999

Entomologia Exp Applicata

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Five weekly applications of Beauveria bassiana (Balsamo) Vuillemin, a genetically engineered isolate of Bacillus thuringiensis Berliner (Raven®), and aldicarb (Temik®) were compared for control of Colorado potato beetle, Leptinotarsa decemlineata (Say) in an irrigated desert cropping system. B. thuringiensis was applied using low and high label rates (1.17 and 7.0 l ha−1). B. bassiana was applied at 5×1013 spores ha−1. Aldicarb (Rhône‐Poulenc), applied at 3.37 kg a.i. ha−1 provided the greatest beetle control and potato yields (45 metric tons ha−1), but overall lowest biodiversity in nontarget organisms, particularly predatory Heteroptera. Low and high rates of B. thuringiensis produced fair to excellent beetle control, yielded 33 and 40 metric tons ha−1 and enabled good survival in predatory Heteroptera and other nontargets. Plots treated with B. bassiana resulted in poor control of beetles prior to row closure after which fair to good control was achieved. Yield in the Beauveria‐treated plots was 33 metric tons ha−1 and effect on biodiversity was comparable to the Bt‐treated plots. The lowest number of overwintering adult L. decemlineata was found in the plots treated with bacteria and fungi (0.68–0.84 adults/0.03 m−3 of soil) and the highest was found in control and aldicarb plots (3.44 and 1.84 adults/0.03 m3 of soil). Aphids and leafhoppers showed higher densities in plots treated with microbial control agents, but were eliminated from plots treated with aldicarb.

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Section: Discussionmentioning

confidence: 99%

Comparative efficacy of Beauveria bassiana, Bacillus thuringiensis, and aldicarb for control of Colorado potato beetle in an irrigated desert agroecosystem and their effects on biodiversity

Lacey¹,

Horton²,

Chauvin³

et al. 1999

Entomologia Exp Applicata

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“…Beim Saugen sowohl an Beutetieren als auch an Blfittern konnte nie das als typisch fiir Heteropteren (DAHL, 1966) (BERKER, 1958;DEMPSTER, 1963;ELLIOTT & WAY, 1968;FRITZSCHE, 1958;HILL, 1957). THEOnALD (1895, zit.…”

Section: Morphologische Untersuchungen Des Rostrumsunclassified

Zur aufnahme von Pflanzensubstanz durch die räuberische BlumenwanzeAnthocoris nemorum [Hem.: Heteroptera]

Lauenstein

1979

Entomophaga

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Anthocoris nemorum L. kann Pflanzensubstanz aufnehmen: Nach zweistiindigem Aufenthalt auf beutefreier Pflanze zeigten etwa 50 }~ der Tiere eine Gewichtszunahme um durchschnittlich 9,7 Yo. Die aufgenommene Substanz erm6g-licht dieselbe Lebensdauer wie Wasser, gestattet es aber den Larven nicht, sich bis zur Imago zu entwickeln.Ein direkter Nachweis des Entnahmeortes im Blatt war nicht m6glich, weil A. nemorum keine Speichelscheide ausbildet und sich eine Pr~iparation der Stechborsten im Blatt nicht durchfiihren liel 3.Aus der ermittelten geringen Lfinge des inserierbaren Stechborstenteils wird geschlossen, dal3 die Wanzen nur Zellen bis zu einer Tiefe von 0,07 mm erreichen k6nnen.Rfiuberische Insektenlarven k6nnen bei Beutemangel nicht durch Ftug andere Wirtspflanzen aufsuchen. Die Larven von Anthocoris nemorum L. verlassen selbst eine beutefreie Wirtspflanze selten ohne Bedrohung. STONER (1970, 1972) und FAUVEL (1974 wiesen bereits mehrfach bei anderen r~iuberischen Wanzen nach, dal3 diese bei unzureichendem Nahrungsangebot ihre Lebensdauer durch Aufnahme von Pflanzensubstanz verl~ingern k6nnen.Bei Untersuchungen fiber den Einflul3 der Nahrung auf Fruchtbarkeit und Entwicklung von A. nemorum stellte sich die Frage, ob auch diese Raubwanzen Nahrung aus Bl~ittern aufnehmen und welche Bedeutung diese Nahrung gegebenenfalls ffir sie besitzt. In der Literatur ist die Aufnahme yon Pflanzensubstanz durch A. nemorum bisher umstritten; es gibt aber einige Beobachtungen, die auf einen solchen Vorgang hindeuten. Bei eigenen Versuchen (LAUENSTEIN, unver6ff.) war zu beobachten, da[3 die Wanzen in Pausen zwischen Suchl~iufen h/iufig das Rostrum auf das Blatt aufsetzten. Dieses Verhalten trat auf kfinstlichem Substrat nie auf; dort legten die Tiere in Laufpausen das Rostrum nach hinten unter Thorax und Abdomen an.(I) Mit Unterstfitzung der Deutschen Forschungsgemeinschaft Jetzige Adresse: Pflanzenschutzamt der Landwirtschaftskammer Weser-Ems, Mars-la-Tour-Stra~3e 9-11, 2900 Oldenburg.

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“…Anthocorids and aphids for experiments were reared as described previously (Elliott & Way, 1968). Laboratory experiments were done in rooms kept at 2o°C and lit by fluorescent tubes for 16 h-day.…”

Section: A T E R I a L S A N D M E T H O D Smentioning

confidence: 99%

“…Bean seedlings were treated with phorate, menazon and dimethoate by the cuttaproot method to give a concentration of 10 ppm (Elliott & Way, 1968). An aqueous solution of phorate labelled with 35S was made by diluting a 95 7' solution of phorate in acetone.…”

Section: Laboratory Tests On Toxicity Of Systemically-treated Plants mentioning

confidence: 99%

“…The selectivity of aphicides, some examples of the value of anthocorids as predators and the effects of insecticides on them have been reviewed (Elliott & Way, 1968). Phorate, but not dimethoate or menazon, is toxic to the eggs of A. nemorum by systemic action, though it does not affect eggs of A. confusus in the same plants, probably because the two species use different oviposition sites (Elliott & Way, 1968). This paper follows the effects of these three aphicides on the developing anthocorid nymph.…”

Section: Introductionmentioning

confidence: 99%

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The action of some systemic aphicides on the nymphs of Anthocoris nemorum (L.) and A. confusus Reut

Elliott

1970

Annals of Applied Biology

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The aphicides phorate, dimethoate and menazon were compared to elucidate. the different pathways by which they can affect Anthocoris nymphs and their aphid prey.When nymphs were caged in contact with deposits on bean leaves phorate and dimethoate had contact LC 50s of 20 and 3 ,ug/cm2 respectively to Anthocoris nemorum and 46 and 6 ,ug/cmZ to A. confusus. When the nymphs were confined on treated leaves on the opposite surface to the deposits, neither phorate nor dimethoate killed them. Menazon did not kill anthocorids at any

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The action of some systemic aphicides on the eggs of Anthocoris nemorum (L.) and A. confusus Reut

Abstract: Comparisons were made of the systemic action of phorate, menazon and dimethoate on Aphis fabae Scop. and on the eggs of the aphidophagous Anthocoridae Anthocoris nemorum (L.) and A . confusus Reut., which are laid within plant tissue.

Cited by 11 publications

References 23 publications

Comparative efficacy of Beauveria bassiana, Bacillus thuringiensis, and aldicarb for control of Colorado potato beetle in an irrigated desert agroecosystem and their effects on biodiversity

Comparative efficacy of Beauveria bassiana, Bacillus thuringiensis, and aldicarb for control of Colorado potato beetle in an irrigated desert agroecosystem and their effects on biodiversity

Zur aufnahme von Pflanzensubstanz durch die räuberische BlumenwanzeAnthocoris nemorum [Hem.: Heteroptera]

The action of some systemic aphicides on the nymphs of Anthocoris nemorum (L.) and A. confusus Reut

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