Insect predators in northeast China and their impacts on Aphis glycines

2012 ◽  
Vol 144 (6) ◽  
pp. 745-755 ◽  
Author(s):  
Jian Liu ◽  
Weijun Xu ◽  
Qiuyu Wang ◽  
Kuijun Zhao
Keyword(s):  
Relative Humidity ◽  
Population Density ◽  
Population Growth ◽  
Natural Enemies ◽  
Northeast China ◽  
Harmonia Axyridis ◽  
Soybean Aphid ◽  
Aphis Glycines ◽  
Field Surveys ◽  
Insect Predators

AbstractPredators of Aphis glycines Matsumura (Hemiptera: Aphididae) were surveyed and their ability to suppress A. glycines population growth was determined in Harbin, northeast China (45.4°N, 126.4°E). Field surveys were conducted on 21 fixed sampling sites in 2004 and 17 in 2005. Impacts of natural enemies of A. glycines were studied using exclosure experiments. Thirteen natural enemies were found, the most abundant of which was Propylaea japonica (Thunberg), Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae), Chrysopa sinica Tjeder, Chrysopa phyllochroma Wesmael, Chrysopa formosa Brauer (Neuroptera: Chrysopidae), Hemerobius humuli Linnaeus (Neuroptera: Hemerobiidae), Orius Wolff sp. (Heteroptera: Anthocoridae), Nabis stenoferus Hsiao (Heteroptera: Reduviidae), Deraeocoris punctulatus (Fallén) (Heteroptera: Miridae), and Episyrphus balteata (De Geer) (Diptera: Syrphidae). Three exclosure treatment types were established, large-mesh cages, small-mesh cages, and no cages. In exclosures, A. glycines density in small-mesh cages peaked at numbers 3.75-fold higher than in large-mesh cages and 17.44-fold higher than on plants with no cages in 2004. In 2005, these numbers were 4.59-fold and 60.98-fold. Temperature was not a factor in exclosures, but relative humidity had significant effects. These results indicated that existing predator communities could partially suppress soybean aphid population density in soybean fields in northeast China.

scholarly journals Population Growth of Soybean Aphid,Aphis glycines, Under Varying Levels of Predator Exclusion

2010 ◽  
Vol 10 (144) ◽  
pp. 1-18 ◽  
Author(s):  
Lisa N. Meihls ◽  
Thomas L. Clark ◽  
Wayne C. Bailey ◽  
Mark R. Ellersieck
Keyword(s):  
Population Growth ◽  
Soybean Aphid ◽  
Aphis Glycines ◽  
Predator Exclusion

scholarly journals Natural enemies in alternative plants during the soybean and corn offseason in Cruz Alta, Rio Grande do Sul

2019 ◽  
Vol 42 ◽  
pp. e42479
Author(s):  
Eduardo Engel ◽  
Mauricio Paulo Batistella Pasini ◽  
Daniele Caroline Hörz ◽  
Aline Hesel ◽  
Daniel Rapachi Barassuol ◽  
...  
Keyword(s):  
Population Density ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Natural Enemies ◽  
Harmonia Axyridis ◽  
Structural Complexity ◽  
Rio Grande ◽  
Rio Grande Do Sul

Identifying the behavior of natural enemies during the crop offseason is a key tool for integrated pest management. The objective of this work was to evaluate the population density of natural enemies of the plants Chloris distichophylla, Andropogon bicornis, and Erianthus angustifolium and to analyze the influence of the structural complexity of these plants on the present population. During the offseasons of 2014, 2015, and 2016, 150 plants of each species were evaluated and subdivided into different clump diameters. The species Lycosa spp., Eriops connexa, Cicloneda sanguinea, Coleomegilla quadrifasciata, Lebia concinna, and Harmonia axyridis were identified. A. bicornis was the plant with the highest population density, followed by C. distichophylla and E. angustifolium. Plants with greater structural complexities sheltered a higher population density of natural enemies.

scholarly journals SOIL NUTRITION MANAGEMENT AND PREDATION BY CHEILOMENES SEXMACULATA (COLEOPTERA: COCCINELLIDAE) IMPACTS ON APHIS GLYCINES (HOMOPTERA: APHIDIDAE)

2010 ◽  
Vol 10 (2) ◽  
pp. 131-145
Author(s):  
Rosma Hasibuan ◽  
Jamalam Lumbanraja
Keyword(s):  
Natural Enemies ◽  
Soil Nutrient ◽  
Soybean Aphid ◽  
Aphis Glycines ◽  
Chicken Manure ◽  
Aphid Population ◽  
Soybean Aphids ◽  
Soil Nutrition ◽  
Nutrition Management ◽  
The Mean

Soil nutrition management and predation by Cheilomenes sexmaculata (Coleoptera: Coccinellidae) impacts on Aphis glycines (Homoptera: Aphididae).  Understanding how soil nutrient availability and natural enemies impacts on aphid populations are important for soybean aphid,  Aphis glycines Matsumura (Homoptera: Aphididae), management. Studies were conducted to examine the effect of soil nutrient management and predaceous coccinellid beetle, Cheilomenes sexmaculata (Fabr.), (Coleoptera: Coccinellidae) on A. glycines population.  The plot size of 300 m2 was set up into 12 plots consisting four treatments and three replications.   The treatments were the combination of NPK (urea 100 kg ha-1 + SP-36 200 kg ha-1 + KCl 200 kg ha-1) levels, dolomite (4 ton ha-1), compost  (10 ton ha-1), and chicken manure (10 ton ha-1). While, the predator’s potential of C. sexmaculata was measured both in the field and laboratory conditions.  The results of the studies indicated that soil nutrition treatments had significant effects on the plant performances: leaf numbers; pod numbers; and plant height. In line with this result, there were significant effects of soil nutrient treatments on the amount of plant nutrient: C, N, P, K, C, Ca, and Mg.  The positive correlation coefficient was observed between the aphid population and nitrogen content, while the significant negative correlation found on between aphid population and the calcium and magnesium content.  Meanwhile, the mean number of soybean aphids (A. glycines)  consumed by C. sexmaculata increased from 8.915 to 40.64  aphids, with an average  26.35 ± 3.16 aphids.  The mean numbers of aphids consumed by predator were significantly influenced by prey densities.   The exclosure study result showed that the densities of A. glycines  in caged plants was higher than that in un-caged plants. In the no-cage treatments, natural enemies had complete access to soybean aphids and caused the total reduction (100%) of A. glycines density by the 8th wk sample period. These findings suggest that reducing the amount of synthetic chemical fertilizer NPK can be supplemented with natural organic materials such as composts and chicken manure and natural occurring predator, C. sexmaculata, is an important natural enemy of the soybean aphid.

Variation in Soybean Aphid (Hemiptera: Aphididae) Biotypes Within Fields

2021 ◽  
Author(s):  
S J Bhusal ◽  
R L Koch ◽  
A J Lorenz
Keyword(s):  
Resistance Genes ◽  
Environmental Sustainability ◽  
Soybean Aphid ◽  
Aphis Glycines ◽  
Aphid Resistance ◽  
Soybean Cultivars ◽  
Major Pest ◽  
Single Field ◽  
Aphis Glycines Matsumura ◽  
Multiple Resistance Genes

Abstract Soybean aphid (Aphis glycines Matsumura (Hemiptera: Aphididae)) has been a major pest of soybean in North America since its detection in this continent in 2000 and subsequent spread. Although several aphid resistance genes have been identified, at least four soybean aphid biotypes have been discovered, with three of them being virulent on soybean cultivars with certain soybean aphid resistance genes. These biotypes are known to vary across years and locations, but information on their variation within single fields is limited. An investigation was conducted to study the variation of soybean aphid biotypes within single townships and fields in Minnesota. Screening of 28 soybean aphid isolates collected from seven soybean fields (six soybean fields in Cairo and Wellington Townships of Renville County, MN and one field in Wilmar Township of Kandiyohi County, MN) revealed the existence of multiple known biotypes of soybean aphid within single fields of soybean. We found up to three biotypes of soybean aphid in a single field. Two biotypes were found in five fields while only one field had only a single biotype. Three isolates presented reactions on a panel of resistant and susceptible indicator lines that were different from known biotypes. These results highlight the importance of characterizing soybean aphid biotypes in small geographical areas and utilizing generated knowledge to develop soybean cultivars pyramided with multiple resistance genes. The outcome will be decreased use of insecticides, thereby improving economic and environmental sustainability of soybean production.

Identification and expression profiles analysis of odorant‐binding proteins in soybean aphid, Aphis glycines (Hemiptera: Aphididae)

2019 ◽  
Vol 27 (5) ◽  
pp. 1019-1030 ◽  
Author(s):  
Ling Wang ◽  
Ying‐Dong Bi ◽  
Ming Liu ◽  
Wei Li ◽  
Miao Liu ◽  
...  
Keyword(s):  
Binding Proteins ◽  
Expression Profiles ◽  
Soybean Aphid ◽  
Aphis Glycines ◽  
Odorant Binding Proteins ◽  
Odorant Binding
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