Release of two predators and two parasitoids to control aphids and whiteflies

Zaki, F. N.; El-Shaarawy, M. F.; Farag, N. A.

doi:10.1007/bf02770616

Cited by 25 publications

(15 citation statements)

References 6 publications

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“…Given its voracity toward these pests, C. undecimpunctata offers interesting potential as a control agent in the context of Integrated Pest Management (IPM) (ElHag 1992;Zaki et al 1999;Moura et al 2006;Cabral et al 2006Cabral et al , 2008. The success of IPM programs depends, in part, on the optimal use of selective insecticides that are less harmful to natural enemies (Tillman and Mulrooney 2000;Stark et al 2007), which requires knowledge of their side-effects on the biological and behavioural traits of these organisms (Tillman and Mulrooney 2000;Sechser et al 2003;Youn et al 2003;Liu and Stansly 2004;Bozski 2006;Desneux et al 2007;Stark et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Voracity of Coccinella undecimpunctata: effects of insecticides when foraging in a prey/plant system

2011

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Coccinella undecimpunctata L. is a euryphagous predator established in Azores that offers interesting potential as a control agent in the context of integrated pest management (IPM). However, to further develop IPM against aphids, it is important to evaluate the effects that insecticides might have on voracity. Thus, we proposed to evaluate the effects of pirimicarb and pymetrozine on the voracity of 4th instar larvae and adults of C. undecimpunctata, under distinct scenarios of exposure to chemicals within a prey/plant system. Voracity of C. undecimpunctata was not significantly affected by pirimicarb or pymetrozine when treatments were directly sprayed on the predator; however, when insecticides were sprayed on the prey/plant system, the predator's voracity was significantly increased. Results suggest that C. undecimpunctata does not detect the insecticide on the aphids and indicate that the increase in voracity may be due to a decrease in the mobility of insecticide-treated aphids, since their capture should be easier than highly mobile non-treated prey. The consequences of such increase in the voracity for IPM programs are discussed.

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Section: Introductionmentioning

confidence: 99%

Voracity of Coccinella undecimpunctata: effects of insecticides when foraging in a prey/plant system

2011

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“…The common green lacewing, Chrysoperla carnea (Stephens), has been recorded as an effective predator of aphids, including Aphis gossypii Glover (Burke and Martin, 1956;Yuksel and Gocmen, 1992;Balasubramani and Swamiappan, 1994;Zaki et al, 1999) and Myzus persicae (Sulzer) (Ridgway and Kinzer, 1974;Tulisalo and Tuovinen, 1975;Hassan, 1978;Zohdy, 1982;Hesselein et al, 1993). It occurs in various agroecosystems, including vegetables (Hoffmann and Frodsham, 1993).…”

Section: Introductionmentioning

confidence: 99%

Effects of three aphid species (Homoptera: Aphididae) on development, survival and predation of Chrysoperla carnea (Neuroptera: Chrysopidae).

Liu

Chen

2001

Appl. Entomol. Zool.

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The effects of three aphid species (fourth instars only), Aphis gossypii Glover; Myzus persicae (Sulzer) and Lipaphis erysimi (Kaltenbach), on immature development, survival and predation of the common green lacewing, Chrysoperla carnea (Stephens), were determined in the laboratory. Survival rates of C. carnea from first stadium to adult emergence were significantly different among larvae fed different aphid species. When larvae were fed A. gossypii and M. persicae, 94.4Ϯ3.3% (meanϮSE) and 87.6Ϯ5.1% of individuals developed to adults, respectively; whereas only 14.9Ϯ3.4% of individuals developed to adults when fed L. erysimi. The developmental durations of C. carnea larvae were also significantly different among larvae fed the three aphid species. The developmental duration from first stadium to adult emergence was shortest when larvae were fed A. gossypii (19.8Ϯ0.4 d), followed by M. persicae (22.8Ϯ0.2 d), and then L. erysimi (25.5Ϯ0.4 d). The total number of fourth stadium aphids consumed by C. carnea larvae differed significantly among individuals fed different aphid species. Chrysoperla carnea consumed more A. gossypii (292.4) and M. persicae (272.6) than L. erysimi (146.4). Although total numbers of aphids consumed by the three C. carnea larval stadia differed significantly, the proportions of aphids consumed by each larval stadium to the total number of aphids consumed were similar, 3.9-7.1% by the first stadium, 12.0-16.8% by the second stadium, and 78.1-83.9% by the third stadium.

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“…), to the detriment of other species, which on the contrary are themselves more abundant in organic management (Ruano et al, 2001;Corrales & Campos, 2004;Porcel et al, 2013). C. carnea has a high capacity to develop resistance in the treated agro-systems (Zaki et al, 1999). Rhaphidioptera, despite its scarcity, was more abundant in ORG than in the other management types (in 2007, without significant differences).…”

Section: Summary Statistics and Arthropod Communitymentioning

confidence: 99%

Methodological considerations in discriminating olive-orchard management type using olive-canopy arthropod fauna at the level of order

Jerez-Valle

García-López

Campos

et al. 2015

Span. j. agric. res.

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The cultivation of the olive tree (Olea europaea L.) has great importance in the entire Mediterranean basin, so that the implementation of organic practices in their management directly affects the sustainability of the agricultural system. Bioindication with arthropods can help to detect the different agricultural practices. In this work, we analyse the most appropriate methodology for discriminating between management using arthropods at the taxonomic level of order, with the novelty of taking into account the weather conditions to select the sampling dates. Between 12 and 15 sampling stations (depending on the year) were selected from olive orchards belonging to organic, conventional non-tillage, and strict conventional management, being sampled by beating the canopy fortnightly in the spring-summer period of 2007, 2008 and 2009. Organic management was more abundant and richer than the rest for the three years. Most groups with significant differences in terms of relative abundance were more abundant in organic orchard, except Neuroptera. Finally, different discriminant methods were evaluated (Linear Discriminant Analysis, Multiple Discriminant Analysis, and Support Vector Machine) with several different data sets. The discriminant analysis with interannual variability reached 97.9% accuracy in differentiating between organic and non-organic management using the LDA method, considering the taxa with significant differences from the abundance, excluding pests, and using samples with more uniform and stable weather patterns (late summer).Additional key words: bioindication; conventional; discriminant analysis; meteorological conditions; non-tillage; organic. Abbreviations used: CON (conventional production); FR% (percentage of individuals recorded); K-W (Kruskal-Wallis nonparametric test); LDA (Linear Discriminant Analysis); m (slope of the line); MDA (Multiple Discriminant Analysis); Me (median); n (number of sample units used); n (m=0.1) (number of samples required for a slope of 0.1); N (absolute abundance of arthropods); NonORG (non-organic production); NS (not significant); NT (conventional non-tillage production); ORG (organic production); Q1 (first quartile); Q3 (third quartile); SD (standard deviation); S obs (observed number of orders); SVM (Support Vector Machine); TNO (total number of orders); X̅ ORG , X̅ NT or X̅ CON (mean abundance per station of each management type).Citation: Jerez-Valle, C.; García-López, P. A.; Pascual, F. (2015). Methodological considerations in discriminating olive-orchard management type using olive-canopy arthropod fauna at the level of order. Spanish Journal of Agricultural Research, Volume 13, Issue 4, e0304, 14 pages. http://dx.doi.org/10.5424/sjar/2015134-6588.This work has one supplementary figure and two supplementary tables published online alongside the electronic version of the article.

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Release of two predators and two parasitoids to control aphids and whiteflies

Cited by 25 publications

References 6 publications

Voracity of Coccinella undecimpunctata: effects of insecticides when foraging in a prey/plant system

Voracity of Coccinella undecimpunctata: effects of insecticides when foraging in a prey/plant system

Effects of three aphid species (Homoptera: Aphididae) on development, survival and predation of Chrysoperla carnea (Neuroptera: Chrysopidae).

Methodological considerations in discriminating olive-orchard management type using olive-canopy arthropod fauna at the level of order

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