Crop loss assessment on winter wheat attacked by the grain aphid,Sitobion avenae(F.), 1974-77

1979 ◽  
Vol 28 (3) ◽  
pp. 143-149 ◽  
Author(s):  
K. S. GEORGE ◽  
R. GAIR
Keyword(s):  
Winter Wheat ◽  
Sitobion Avenae ◽  
Crop Loss ◽  
Loss Assessment ◽  
Grain Aphid ◽  
Crop Loss Assessment

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.

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