Effects of Pesticides on Pecan Aphid Predators Chrysoperla rufilabris (Neuroptera: Chrysopidae), Hippodamia convergens, Cycloneda sanguinea (L.), Olla v-nigrum (Coleoptera: Coccinellidae), and Aphelinus perpallidus (Hymenoptera: Encyrtidae)

1990 ◽  
Vol 83 (5) ◽  
pp. 1806-1812 ◽  
Author(s):  
Russell F. Mizell ◽  
Daniel E. Schiffhauer
Keyword(s):  
Hippodamia Convergens ◽  
Chrysoperla Rufilabris ◽  
Aphid Predators

SEASONAL OCCURRENCE AND RELATIVE ABUNDANCE OF APHID PREDATORS AND PARASITOIDS ON PUBESCENT POTATO PLANTS

1985 ◽  
Vol 117 (10) ◽  
pp. 1231-1237 ◽  
Author(s):  
John J. Obrycki ◽  
Maurice J. Tauber
Keyword(s):  
Solanum Tuberosum ◽  
Relative Abundance ◽  
Coleomegilla Maculata ◽  
Seasonal Occurrence ◽  
Hippodamia Convergens ◽  
Aphid Parasitoid ◽  
Potato Plants ◽  
Aphid Predators ◽  
Coccinella Transversoguttata

AbstractDuring 2 field seasons, Coccinellidae (primarily Coccinella transversoguttata richardsoni, Coleomegilla maculata, Hippodamia convergens, H. tridecimpunctata, and H. glacialis) were the most abundant predators on potato hybrids (Solanum tuberosum × S. berthaultii, F3) with various densities of glandular pubescence. Highly pubescent clones had the highest percentage of predator eggs, while clones with the lowest trichome densities had the highest percentages of immature and adult predators. By comparison, high numbers of aphid parasitoid mummies (primarily Aphidius and Praon spp.) occurred on clones with moderate to high densities of glandular pubescence. During both years, predators and parasitoids were most abundant in late July and August.

scholarly journals Spray Penetration and Natural Enemy Survival in Dense and Sparse Plant Canopies Treated with Carbaryl: Implications for Chemical and Biological Control1

2018 ◽  
Vol 36 (1) ◽  
pp. 21-29
Author(s):  
Whitney Yeary ◽  
Amy Fulcher ◽  
Heping Zhu ◽  
William Klingeman ◽  
Jerome Grant
Keyword(s):  
Plant Architecture ◽  
Insect Pests ◽  
Lady Beetle ◽  
Hippodamia Convergens ◽  
Green Lacewing ◽  
Canopy Density ◽  
Spray Penetration ◽  
Middle Position ◽  
Chrysoperla Rufilabris ◽  
Beneficial Insect

Abstract Ornamental plant producers often rely on chemical control to manage insect pests. However, cultural practices, such as pruning, can influence plant architecture which may, in turn, affect pesticide penetration. Spray penetration was studied to determine the effect of canopy density on beneficial insect survival following insecticide application and to better understand the implications of canopy density on pest management. Regardless of canopy density or plant species, the interior position of the canopy received less than 8% spray coverage. The middle position of sparse canopies received 288 to 513% more coverage than the middle position of dense canopies. The middle and interior position of dense canopies protected greater than 50% of the convergent lady beetle (Hippodamia convergens (Guérin-Méneville) population while only the interior position of dense canopies protected greater than 50% of green lacewing (Chrysoperla rufilabris Burmeister) populations. Index words: beneficial insect, nursery crop, pesticide, plant architecture, woody ornamental. Species used in this study: China Girl® holly (Ilex ×meserveae ‘Mesog'); ‘Alice' Oakleaf hydrangea (Hydrangea quercifolia Bartr. ‘Alice'); convergent lady beetle [Hippodamia convergens (Guérin-Méneville)]; green lacewing [Chrysoperla rufilabris (Burmeister)]. Chemicals used in this study: carbaryl (1-naphthyl N-methylcarbamate, Sevin® SL, Bayer CropScience, Durham, NC).

scholarly journals Enemigos naturales asociados al pulgón lanígero en huertos de manzano con diferente manejo de plagas

2017 ◽  
Vol 8 (4) ◽  
pp. 799
Author(s):  
María Fátima Ordoñez Beltrán ◽  
Juan Luis Jacobo Cuéllar ◽  
Ernesto Quintana López ◽  
Rafael Ángel Parra Quezada ◽  
Víctor Manuel Guerrero Prieto ◽  
...  
Keyword(s):  
Hippodamia Convergens ◽  
Eriosoma Lanigerum ◽  
Chrysoperla Rufilabris ◽  
Malus Sylvestris ◽  
Aphelinus Mali

El pulgón lanígero (Eriosoma lanigerum Hausmann) es un fitófago que incide en huertos de manzano [Malus sylvestris (L.) Mill. var domestica (Borkh) Mansf.] establecidos en el estado de Chihuahua. Para su combate se ha privilegiado el uso de insecticidas convencionales, incurriendo en aplicaciones extemporáneas que posiblemente repercuten en la baja ocurrencia de enemigos naturales. Con base en lo anterior y la reducida información sobre enemigos naturales del pulgón lanígero del manzano en México, durante los años 2011 y 2012 se realizó el presente trabajo con la finalidad de identificar la incidencia de depredadores y parasitoides asociados a colonias de pulgón lanígero en huertos de manzano con diferente manejo de plagas. Por manejo del huerto, se detectaron 38 y 35 ejemplares para los huertos sin manejo y con manejo integrado de plagas, valores que fueron estadísticamente iguales entre sí y diferentes a los 12 ejemplares detectados en el huerto con manejo convencional. Las especies de depredadores asociadas a colonias de pulgón lanígero en Chihuahua fueron: Hippodamia convergens, Chrysopa nigricornis, Chrysopa oculata, Chrysoperla rufilabris, Chrysoperla  comanche, Chrysopa spp., Allograpta obliqua, Sirphus sp. y Toxomerus sp., mientras que como parasitoides se detectó solo a Aphelinus mali.

scholarly journals Life table parameters of the aphid predators Coccinella septempunctata, Ceratomegilla undecimnotata and Propylea quatuordecimpunctata (Coleoptera: Coccinellidae)

2008 ◽  
Vol 105 (3) ◽  
pp. 427-430 ◽  
Author(s):  
Dimitrios C. KONTODIMAS ◽  
Panagiotis G. MILONAS ◽  
George J. STATHAS ◽  
Nickolaos E. PAPANIKOLAOU ◽  
Anna SKOURTI ◽  
...  
Keyword(s):  
Life Table ◽  
Coccinella Septempunctata ◽  
Life Table Parameters ◽  
Propylea Quatuordecimpunctata ◽  
Aphid Predators

scholarly journals Green Lacewings and Water Sprays for Azalea Lace Bug Control1

2018 ◽  
Vol 36 (4) ◽  
pp. 119-125
Author(s):  
Jana C. Lee ◽  
Barry Finley ◽  
S. Michael Flores ◽  
Katerina Velasco Graham ◽  
J. Megan Woltz ◽  
...  
Keyword(s):  
Biological Control ◽  
Field Trials ◽  
Green Lacewing ◽  
Chrysoperla Rufilabris ◽  
Lace Bug ◽  
Landscape Plants ◽  
Water Sprays ◽  
Lace Bugs ◽  
Sequential Combination ◽  
Application Methods

Abstract The azalea lace bug, Stephanitis pyrioides, is a serious pest of azaleas and rhododendrons which is often controlled by systemic insecticides. However, the efficacy of softer approaches such as biological control and water sprays against this pest on rhododendrons is unknown. Therefore, we tested the commercially available green lacewing predator, Chrysoperla rufilabris, and water sprays on lace bug infestation in one laboratory and four field trials. First, 2nd instar predator larvae were confirmed to consume lace bug nymphs and sometimes adults. Second, tapping predator larvae from hexcel units over dry leaves of potted rhododendrons and shaking loose eggs over wet leaves were reliable application methods. Third, predator larvae released onto potted rhododendrons lowered lace bug counts for two weeks. Fourth, after four bi-weekly applications, plants receiving egg cards or water-sprays had reduced lace bug counts and fewer damaged leaves than control plants. Fifth, landscape plants receiving the sequential combination of water spray followed by predator egg releases had 44 to 90% lower lace bug abundance and fewer damaged leaves than the control. After lace bugs were initially dislodged, hatching predators might have consumed hatching lace bugs. Index words: biological control, Chrysoperla rufilabris (Burmeister), mechanical control, rhododendron, Stephanitis pyrioides (Scott) Species used in this study: Azalea lace bug (Stephanitis pyrioides Scott), green lacewing (Chrysoperla rufilabris Burmeister), Rhododendron (Rhododendron spp.)

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