Intraguild predation on the aphid parasitoid Aphelinus asychis by the ladybird Harmonia axyridis

BioControl ◽  
2016 ◽  
Vol 62 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Wenyan Fu ◽  
Xinglin Yu ◽  
Nazeer Ahmed ◽  
Shize Zhang ◽  
Tongxian Liu
Keyword(s):  
Intraguild Predation ◽  
Harmonia Axyridis ◽  
Aphid Parasitoid ◽  
Aphelinus Asychis

Intraguild predation of the aphid parasitoid Aphelinus certus by Coccinella septempunctata and Harmonia axyridis

BioControl ◽  
2012 ◽  
Vol 57 (5) ◽  
pp. 627-634 ◽  
Author(s):  
Y. Xue ◽  
C. A. Bahlai ◽  
A. Frewin ◽  
C. M. McCreary ◽  
L. E. Des Marteaux ◽  
...  
Keyword(s):  
Intraguild Predation ◽  
Harmonia Axyridis ◽  
Coccinella Septempunctata ◽  
Aphid Parasitoid

Intraguild predation of the aphid pathogenic fungus Pandora neoaphidis by the invasive coccinellid Harmonia axyridis

2008 ◽  
Vol 33 (2) ◽  
pp. 175-182 ◽  
Author(s):  
H. E. ROY ◽  
J. BAVERSTOCK ◽  
R. L. WARE ◽  
S. J. CLARK ◽  
M. E. N. MAJERUS ◽  
...  
Keyword(s):  
Intraguild Predation ◽  
Harmonia Axyridis ◽  
Pathogenic Fungus ◽  
Pandora Neoaphidis

CONSPECIFIC SUPERPARASITISM IN TWO PARASITOID WASPS, APHIDIUS ERVI HALIDAY AND APHELINUS ASYCHIS WALKER: REPRODUCTIVE STRATEGIES INFLUENCE HOST DISCRIMINATION

1991 ◽  
Vol 123 (6) ◽  
pp. 1229-1237 ◽  
Author(s):  
B. Bai
Keyword(s):  
Reproductive Strategies ◽  
Acyrthosiphon Pisum ◽  
Aphidius Ervi ◽  
Parasitoid Wasps ◽  
Host Discrimination ◽  
Larval Competition ◽  
Parasitoid Species ◽  
Aphid Parasitoid ◽  
Aphelinus Asychis ◽  
Physiological Suppression

AbstractConspecific host discrimination and larval competition in two aphid parasitoid species were studied in the laboratory using the pea aphid, Acyrthosiphon pisum (Harris) (Homoptera: Aphididae), as a host. Aphidius ervi Haliday (Hymenoptera: Aphidiidae) used internal host cues to discriminate between unparasitized and conspecific parasitized hosts. When only parasitized hosts were available, females oviposited into recently parasitized ones where their progeny had a good chance to survive, but rejected those parasitized ≥24 h earlier where their offspring normally died. Competitions occurred only after both eggs had hatched. Larvae eliminated supernumeraries by means of physical combat and physiological suppression. In Aphelinus asychis Walker (Hymenoptera: Aphelinidae), factors, or changes in host internal condition, associated with hatching of the first egg resulted in suppression of conspecific competitors which could be in either larval or egg stage. The older larvae always won competitions through physiological means. A wasp’s oviposition decision is shown to be influenced by the probability of its progeny’s survival. Species that have different reproductive strategies may respond differently to identical host conditions.

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