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2 edition of predacious Coccinellidae associated with the wheat aphid, Schizaphis graminum (Rond.) in the Orange Free State. found in the catalog.

predacious Coccinellidae associated with the wheat aphid, Schizaphis graminum (Rond.) in the Orange Free State.

Hubert Dick Brown

predacious Coccinellidae associated with the wheat aphid, Schizaphis graminum (Rond.) in the Orange Free State.

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  • 37 Currently reading

Published in [Stellenbosch] .
Written in English

    Places:
  • South Africa,
  • Orange Free State.
    • Subjects:
    • Ladybugs.,
    • Greenbug -- Biological control.,
    • Wheat -- Diseases and pests -- South Africa -- Orange Free State.

    • Edition Notes

      Thesis--University of Stellenbosch.

      Classifications
      LC ClassificationsQL596.C65 B7
      The Physical Object
      Paginationviii, 318 l.
      Number of Pages318
      ID Numbers
      Open LibraryOL5518683M
      LC Control Number73546032

      THE GREAT LAKES ENTOMOLOGIST 47 A STUDY OF THE BIOLOGY OF RHOPALOSIPHUM PADI (HOMOPTERA: APHIDIDAE) IN WINTER WHEAT IN NORTHWESTERN INDIANAI J. E. Araya2, J, E. Foster3, and S. E. Cambron 3 ABSTRACT Periodic collections of the bird cherry-oat aphid, Rhopalosiphum padi, dtring two years revealed small populations on winter wheat in Lafayette, Indiana. Cabbage aphid Brevicoryne brassicae Linnaeus (Insecta: Hemiptera: Aphididae) 3 segments. These two spots merge into a dark band across the last abdominal segment (Kessing and Mau ). Damage Aphids feed by sucking sap from their host plants. They produce a sugary waste product called honeydew, which is fed on by ants. Cotton aphid Development Predation Degree-days Minute two-spotted ladybeetle Silverleaf whitefly abstract The minute two-spotted ladybeetle, Diomus notescens Blackburn is a common predator of aphids and other pests in Australian agricultural crops, however little . Aphid populations normally are monitored by visual examination of crops or with yellow water pan traps. Foliar insecticides are commonly applied for aphid suppression. Broad-spectrum insecticides are sometimes used because of the other pests associated with solanaceous crops.

      Full text of "Ecology and Beour of the Ladybird Beetles" See other formats.


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predacious Coccinellidae associated with the wheat aphid, Schizaphis graminum (Rond.) in the Orange Free State. by Hubert Dick Brown Download PDF EPUB FB2

Greenbug,Schizaphis graminum Rondani Insecta: Hemiptera: Aphididae 4 susceptible to greenbug damage than adequately irrigated crops. Prolonged temperatures over 85°F have a negative effect on reproduction and survival of greenbugs. Natural enemies also are better able to keep up with these aphids at warmer temperatures.

Insecticide. Natural enemies of the black citrus aphid, Toxoptera aurantii (Boy.), on cocoa in Ghana are identified. Biology of some of the natural enemies is followed. Behaviour of the coccinellid and syrphid predators is studied in detail. Effectiveness of the predators in reducing the Cited by:   DIMBOA (2,4-dihydroxymethoxy-1,4-benzoxazinone), a secondary metabolite found in cereal extracts, confers resistance in wheat to aphids.

Its effect on beneficial organisms was tested on larvae of the aphid predatorEriopis connexa Germar. Larvae were fed until pupation on artificial diets to which different concentrations of DIMBOA (2–μg/g diet) were added, as well as on aphids that Cited by: Greenbug, Schizaphis graminum (Homoptera: Aphididae) Fig.

Fig. Fig. Fig. Identification Greenbugs are small, pale green aphids with a dark green line down the back and antennae as long as the body (Fig. On plants, they are usually found feeding on the undersides of lower leaves (Fig.

Greenbug damage, whether on wheat or sorghum. The population of aphid (Schizaphis graminum R.) was studied on twelve varieties/lines of wheat (Triticum aestivum) viz.

andduring at Multan, Pakistan. ABSTRACT - The effect of silicon-treated wheat plants (Triticum aestivum L.) on the greenbug, Schizaphis graminum (Rond.) (Hemiptera: Aphididae) was evaluated. Plants were treated with silicon incorporated to the soil and by foliar spraying.

Aphid development was evaluated by observing the. Coccinellidae (adults) Schizaphis graminum (Rondani)Rhopalosiphum maidis (Fitch)Aphididae Coccinellidae all predators parasitoids aphids Percentage Percentage of of all samples1 Total recorded Family Genus and species TABLE 1.

Aphid, predator and parasitoid species collected in grain sorghum fields in. Unfortunately, wheat crop is threatened by number of insect pests like wheat weevil (Tanymecus indicus), wheat armyworm (Mythimna separata), white ants (Microtermes obesi) and aphids (Schizaphis graminum R.).

Among these insect pests of wheat crop, aphid (Schizaphis graminum R.) is an important and destructive pest [3].Author: Muhammad Arshad, Muhammad Irfan Ullah, Ghulam Murtaza, Mudassar Javed, Muhammad Hannan Ahmad.

Abstract. Clonal populations of the aphid, Schizaphis graminum, have been separated into biotypes based on host preference and their ability to overcome resistCited by: ABSTRACT. The effect of silicon-treated wheat plants (Triticum aestivum L.) on the greenbug, Schizaphis graminum (Rond.) (Hemiptera: Aphididae) was were treated with silicon incorporated to the soil and by foliar spraying.

Aphid development was evaluated by observing the duration of the pre-reproductive, reproductive and post-reproductive periods, as well as fecundity and.

Predacious behaviour of four species of Coccinellidae (Coleoptera) associated with the wheat aphid, Schizaphis graminum (Rondani), in South Africa Article Apr Author: Ivo Hodek.

The wheat aphid was found to be attacked by many predators and parasitoid, namely syrphid flies, coccinellids, green lacewing and the parasitoid Aphelinus sudanensis. Debeira variety harboured more predators and parasitoid than the other two varieties. Keywords: Shizaphis graminum (Rond.), Natural enemies, Wheat varieties.

aphids and fed on various aphid species like M. persicae, S. graminum, A. craccivora, A. gossypii, A. glycines, M. rosae, A. fabae and A.

pisum in the field (Kuznetsov, ). Schizaphis graminum (R.) generally recognized as green bug is a notorious insect pest of minute seed with a broad host range of about sixty plant species. In order to select a suitable banker plant to culture Aphidius gifuensis Ashmead in mass as a biological control agent, the reproductive potential of A.

gifuensis parasitizing Schizaphis graminum Rondani reared on wheat, barley or oat was measured by the way of two-sex life table. Results showed that the intrinsic rate of increase (r) and net reproductive rate (R 0) of A.

gifuensis reared on S Cited by: 2. Corn Leaf Aphid, Rhopalosiphum maidis, as a Key to GreenbugKey to Greenbug, Schizaphis graminumSchizaphis graminum, Biological Control in Grain Sorghum, Sorghum bicolorSorghum bicolor G J Michels JrG.

Michels Jr.1 and J H Matisand J. Matis2 1 Texas Agricultural Experiment Station, Amarillo, TX, USA 2 Texas A&M Department of Statistics, College Station, TX, USA. ECOLOGY AND POPULATION BIOLOGY DNA Barcoding to Identify All Life Stages of Holocyclic Cereal Aphids (Hemiptera: Aphididae) on Wheat and Other Poaceae KEVIN A.

SHUFRAN1 AND GARY J. PUTERKA USDAÐARS, Wheat, Peanut, and Other Field Crops Research Unit, N. Western Road. The greenbug, Schizaphis graminum Rondani (homoptera: aphididae) is one of the most important pests of cereal par - ticularly wheat, and transmits plant disease viruses such as barley yellow dwarf virus (BY dV).

in this study, resistance and susceptibility of 16 cultivars and 20 wheat lines to S. graminum was evaluated under laboratory. THE RUSSIAN WHEAT APHID, Diuraphis noxia (Mordvilko), is widely distributed throughout much of Asia, the Middle East, and parts of Africa, south ern Europe, and South America.

It has recently invaded the United States, where it poses a serious economic threat to several cereal crops, particu larly wheat, barley, and triticale. noxia was first.

phis graminum (Rondani), Rhopalosi-phum padi L., R. maidis F., Sitobion avenae F. miscanthi, Diurapis noxia M., and Metopolophium dirhodum W. (Schotzik and Perez, ). graminum, R. padi maidis and D. noxia attack wheat throughout world including Pakistan causing severe damage to wheat crop (Inayat-ullah et al., ).

Some species are. A study of the Aphididae (Homoptera) of East Africa 81 >> Hysteroneura (Schizaphis) graminum urn:lsid::TaxonName Leonard. Journal of the Kansas Entomological Society 32(1) >> Toxoptera graminum.

We observed the recruitment of natural enemies to aphid microcosms – pots containing four sorghum plants infested with either Melanaphis sacchari (Zehntner), a newly invasive aphid, or Schizaphis graminum (Rondani), an established pest.

The first cohort was monitored in open habitat along a tree line near riparian parkland and urban plantings Cited by: We conducted studies to (1) examine the stage-specific ability of Coccinella septempunctata L. and Hippodamia convergens Guérin-Méneville to prey on mummies of Schizaphis graminum (Rondani) parasitized by Lysiphlebus testaceipes Cresson, (2) evaluate whether fourth instars of both species are able to discriminate between mummies and unparasitized S.

graminum, and (3) quantitatively describe Cited by: Brown, H. Predaceous behaviour of four species of coccinellidae (Coleoptera) associated with the wheat aphid, Schizaphis graminum (Rondani), in South Africa. Trans. Roy. Ent. Soc. London Brues, C. Dragonflies as predatory enemies of.

Updated May 4, by Gary Hein and John Thomas General Thresholds for Russian Wheat Aphid Season Crop Stage Treatment Threshold Level. The objectives of the research were to study the diversity of leaf endophytic fungi of chili, and investigate its potency in protecting host plants against Aphis gossypii Glov.

Endophytic fungi were isolated from chili leaves with two categories: aphid infested plants and aphid-free plants, collected from farmer’s field in Bogor, West Java. The cereal aphid Schizaphus graminum (Rond.) commonly known as green bug is a serious pest of small grains and having a wide host range of at least 60 plant species including wheat, barley, sorghum and corn (Bowling et al., ).

It sucks the sap and injects the. Aphids and jassids These leaf sucking insects also damage the wheat crop resulting in discoloration of leaves. Control measures: Apply litre Folithion or Thiodan or one litre Ekalux 25 EC in litres of water per hectare.

Myzus persicae (Sulzer) collected in Scotland were characterized for four microsatellite loci, intergenic spacer fingerprints and the resistance mechanisms modified acetylcholinesterase (MACE), overproduced carboxylesterase and knockdown resistance (kdr).

Microsatellite polymorphisms were used to define a limited number of clones that were either fully susceptible to insecticides or possessed Cited by: aphid’s (i-iv) nymphal instars were provided as food inside the rearing jars on wheat leaves in excess daily.

After each 24 hours the old infested leaves were replaced with new diet in each jar. The insects were observed daily twice for egg laying. The first egg observed in each pair was the indication for the end of pre oviposition by: 1.

The relationship between the seasonal prevalence of the predacious coccinellid Pseudoscymnus hareja and the mulberry scale Pseudaulacaspis pentagona in tea fields was investigated using sticky traps set inside tea bushes.

Crawlers (newly-hatched larvae) and winged adult males of P. pentagona and adults of P. hareja were captured in large numbers. The number of trapped P. hareja adults reached Cited by: 9. The green lacewing, Chrysoperla carnea (Steph.) (Neuroptera: Chrysopidae), is a generalist predator in its larval stage of most species of soft bodied insect pests, especially aphids, whiteflies, thrips, coccids, and mealy bugs.

This predator had been recorded in different regions in Saudi Arabia as indigenous species. The fitness of this indigenous predator for controlling the aphid, Aphis Author: A. Alghamdi, S. Al-Otaibi, S. Sayed, S. Sayed. One aphid commonly confused with the cotton aphid is the spirea aphid, Aphis spiraecola Patch.

One means of identifying them is by examining the cauda. Figure 5. Other aphids are similar in appearance to Aphis gossypii (Glover), the melon or cotton aphid.

Schizaphis graminum (Ron-dani),intheUnitedStates(Hunter,Websterand Phillips,Wadley,Sekhar,Schlingerand trolling greenbugs during the outbreak on wheat in Jackson et al. () reported. testaceipes.

was the. The black bean aphid, Aphis fabae Scopoli (Hemiptera: Aphididae) is one of the important pests of sugar beet in Iran. Aphidius matricariae Haliday (Hymenoptera: Braconidae, Aphidiinae) is a key parasitoid used in various integrated pest management (IPM) programs worldwide.

This study was conducted to determine the effects of four cultivars of sugar beet (IC, PP8, Rasoul and Shirin) on Cited by: ovipositor inside the aphid.

The larvae do not affect the development of their host, until they reach an adult stage. The wasp larva then attaches the body of the aphid to the leaf and spins a cocoon within the aphid, in which it pupates. The dead aphid takes on a golden brown, papery, swollen appearance, often called a mummy (Williams et al.

BEHAVIOR Interactions of Native and Non-Native Lady Beetle Species (Coleoptera: Coccinellidae) With Aphid-Tending Ants in Laboratory Arenas C. FINLAYSON,1 A. ALYOKHIN, AND E. PORTER University of Maine, School of Biology and Ecology. We surveyed the parasitoids and hyperparasitoids of the green peach aphid, Myzus persicae, and the foxglove aphid, Aulacorthum solani in the lower Fraser Valley of British Columbia, surveys were conducted using isolated pepper plants, with aphids, as trap by: 8.

The aphid parasitoid, Diaeretiella rapae (M’Intosh), is considered a specialist on Cruciferous plants, but is also capable of using aphid hosts in some Oklahoma where canola, Brassica napus, is rotated with wheat, Triticum aestivum, there is opportunity for movement of D.

rapae between crops and tory colonies of D. rapae were maintained in both winter wheat infested. The brown citrus aphid, Toxoptera citricida (Kirkaldy), is one of the world's most serious pests of citrus. Although brown citrus aphid alone can cause serious damage to citrus, it is even more of a threat to citrus because of its efficient transmission of citrus tristeza closterovirus (CTV).

icant impact on the English grain aphid, Sitobion ave-nae (F.) (Zun˜iga ). avenae and M. dirhodum were Þrst reported in to attack wheat, Triticum aestivum L., crops in Chile. Barley yellow dwarf virus, transmitted by these aphids, caused a loss in wheat production of 20% in.

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit J. Soil. Nature.

2(3): December 40 BEAN APHID PREDATION EFFICIENCY OF LADY BIRD BEETLE Micraspis discolor F. (COLEOPTERA: COCCINELLIDAE) SUBRATA PAUL CHOWDHURY1, M.

2, M. R. AMIN3, M. R. AMIN 2 AND NURUL AMIN RASEL4 1&4MS Student, Department of Entomology, 2 Department of Entomology, 3 Department of Agro-Industrial and Food .Aphid Species File is a taxonomic, nomenclatural, and bibliographic database of the aphids of the world, including all extant and fossil taxa.

To see information contained in the database, use the links across the top of the page. Click on Search to find a specific taxon or other kinds of information.