Comparison of the epidemiology of Metopolophium dirhodum and Sitobion avenae on winter wheat

1981 ◽  
Vol 87 (3) ◽  
pp. 71-81 ◽  
Author(s):  
G. W. Ankersmit ◽  
N. Carter
Keyword(s):  
Winter Wheat ◽  
Sitobion Avenae ◽  
Metopolophium Dirhodum

scholarly journals The spatial distribution of canopy-resident and ground-resident cereal aphids (Sitobion avenae and Metopolophium dirhodum) in winter wheat

2012 ◽  
Vol 7 (1) ◽  
pp. 21-32 ◽  
Author(s):  
Linton Winder ◽  
Colin J. Alexander ◽  
Chris Woolley ◽  
Joe N. Perry ◽  
John M. Holland
Keyword(s):  
Spatial Distribution ◽  
Winter Wheat ◽  
Sitobion Avenae ◽  
Cereal Aphids ◽  
Metopolophium Dirhodum

scholarly journals Primary parasitoid and hyperparasitoid guilds (hymenoptera) of grain aphid (Sitobion avenae F.) in northern Poland

2014 ◽  
Vol 66 (3) ◽  
pp. 1141-1148 ◽  
Author(s):  
T. Barczak ◽  
A. Dębek-Jankowska ◽  
J. Bennewicz
Keyword(s):  
Winter Wheat ◽  
Sitobion Avenae ◽  
Aphidius Ervi ◽  
Primary Parasitoid ◽  
Parasitic Hymenoptera ◽  
Grain Aphid ◽  
Northern Poland

The aim of this study was to determine and compare the guilds of parasitic Hymenoptera associated with the grain aphid on rye and winter wheat. Of the seven species of primary parasitoids (Braconidae: Aphidiinae, Aphelinidae), parasitizing colonies of Sitobion avenae, the most numerous and most frequently occurring, included Praon volucre, Aphidius ervi and Aphidius uzbekistanicus. Primary parasitoids of grain aphids were eliminated largely by hyperparasitoids, mostly of the families Megaspilidae (Dendrocerus carpenteri), Figitidae-Alloxystini (Alloxysta spp. and Phaenoglyphis villosa) and Pteromalidae (Pachyneuron aphidis, Asaphes vulgaris, Coruna clavata), but D. carpenteri and Alloxysta spp. belonged to dominants and subdominants, respectively.

scholarly journals Comparison of Field Population Growths of Three Cereal Aphid Species on Winter Wheat

2011 ◽  
Vol 39 (No. 2) ◽  
pp. 61-64 ◽  
Author(s):  
V. Jarošík ◽  
A. Honěk ◽  
A. Tichopád
Keyword(s):  
Winter Wheat ◽  
Rhopalosiphum Padi ◽  
Intrinsic Rate ◽  
Aphid Species ◽  
Population Increase ◽  
Intrinsic Rate Of Increase ◽  
Cereal Aphid ◽  
Metopolophium Dirhodum ◽  
Aphid Density ◽  
Rate Of Increase

Population growths of three aphid species colonising winter wheat stands, Metopolophium dirhodum, Rhopalosiphum padi and Sitobion avenae, were analysed by regression method. The calculations were based on counts in 268 winter wheat plots at 3 or 7 day intervals over 10 (leaves) or 6 (ears) years. The population dynamics of a particular species differed widely between years. Density independent exponential growth of the population was most common, but its rate differed significantly between species, and for S. avenae also between populations on leaves and ears, on which the populations grew fastest. Field estimates of the intrinsic rate of increase derived from the exponential growths ranged between 0.010–0.026 in M. dirhodum, 0.0071–0.011 in R. padi, and between 0.00078–0.0061 and 0.0015–0.13 in S. avenae on leaves and ears, respectively. In the populations with the most vigorous population growth, S. avenae on ears and M. dirhodum on leaves, the rate of population increase significantly decreased with increasing aphid density.  

The relative abundance of the hymenopterous parasites attacking Metopolophium dirhodum (Walker) and Sitobion avenae (F.) (Hemiptera: Aphididae) on cereals during 1973–79 in southern England

1981 ◽  
Vol 71 (2) ◽  
pp. 307-315 ◽  
Author(s):  
G. J. Dean ◽  
Margaret G. Jones ◽  
W. Powell
Keyword(s):  
Relative Abundance ◽  
Sitobion Avenae ◽  
Metopolophium Dirhodum ◽  
Southern England

AbstractIn studies in southern England, the relative abundance of the hymenopterous parasites attacking Metopolophium dirhodum (Wlk.) and Sitobion avenae (F.) differed between their hosts, between years (1973–79) and on whether they were assessed using field or laboratory-reared mummies. Species of the complex of Aphidius uzbekistanicus Luzhetzki were usually the commonest parasites, especially from mummies of M. dirhodum, while Aphidius picipes (Nees) was less common and tended to attack mainly S. avenae; Toxares deltiger (Hal.) was common only in 1979. Species of hyperparasites emerged most frequently from mummies of M. dirhodum, except for Dendrocerus carpenteri (Curt.), which emerged most often from S. avenae.

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