Response of the Pea Aphid Parasite Aphidius ervi Haliday (Hymenoptera: Aphidiidae) to Transmitted Light

1984 ◽  
Vol 13 (2) ◽  
pp. 595-598 ◽  
Author(s):  
A. M. Goff ◽  
L. R. Nault
Keyword(s):  
Transmitted Light ◽  
Pea Aphid ◽  
Aphidius Ervi ◽  
Aphid Parasite

THE LARVAL INSTARS OF APHIDIUS SMITHI (HYMENOPTERA: APHIDIIDAE)

1979 ◽  
Vol 111 (5) ◽  
pp. 631-634 ◽  
Author(s):  
R. J. Chorney ◽  
M. Mackauer
Keyword(s):  
Electron Micrographs ◽  
Ventral Side ◽  
Pea Aphid ◽  
Scanning Electron Micrographs ◽  
Diagnostic Features ◽  
Larval Instars ◽  
The Third ◽  
Aphid Parasite ◽  
Feeding Structure ◽  
Scanning Electron

AbstractThe pea aphid parasite Aphidius smithi Sharma & Subba Rao has four larval instars. The first and the fourth instars are mandibulate. The second instar possesses oral lobes but not mandibles. A bilobed feeding structure on the ventral side of the head of the third instar could function as a pharyngeal pump. The chief diagnostic features of each instar are illustrated with scanning electron micrographs. Variability in the number of larval instars among species of Aphidiidae is discussed.

Pea aphid clonal resistance to the endophagous parasitoid Aphidius ervi

2002 ◽  
Vol 48 (10) ◽  
pp. 971-980 ◽  
Author(s):  
S. Li ◽  
P. Falabella ◽  
S. Giannantonio ◽  
P. Fanti ◽  
D. Battaglia ◽  
...  
Keyword(s):  
Pea Aphid ◽  
Aphidius Ervi

Learning by the parasitoid wasp, Aphidius ervi (Hymenoptera: Braconidae), alters individual fixed preferences for pea aphid color morphs

Oecologia ◽  
2006 ◽  
Vol 150 (1) ◽  
pp. 172-179 ◽  
Author(s):  
Shaun A. Langley ◽  
Kelley J. Tilmon ◽  
Bradley J. Cardinale ◽  
Anthony R. Ives
Keyword(s):  
Parasitoid Wasp ◽  
Pea Aphid ◽  
Aphidius Ervi ◽  
Color Morphs

Aphidius ervi Preferentially Attacks the Green Morph of the Pea Aphid, Acyrthosiphon pisum

2007 ◽  
Vol 20 (1) ◽  
pp. 25-32 ◽  
Author(s):  
R. Libbrecht ◽  
D. M. Gwynn ◽  
M. D. E. Fellowes
Keyword(s):  
Acyrthosiphon Pisum ◽  
Pea Aphid ◽  
Aphidius Ervi

scholarly journals Symbiont-conferred immunity interacts with the effects of parasitoid genotype and intraguild predation to shape pea aphid immunity in a clone-specific fashion

2021 ◽  
Author(s):  
Samuel Alexander Purkiss ◽  
Mouhammad Shadi Khudr ◽  
Oscar Enrique Aguinaga ◽  
Reinmar Hager
Keyword(s):  
Genetic Variation ◽  
Intraguild Predation ◽  
Species Interactions ◽  
Acyrthosiphon Pisum ◽  
Species Interaction ◽  
Genetic Effects ◽  
Pea Aphid ◽  
Aphidius Ervi ◽  
Indirect Genetic Effects ◽  
Host Parasite

Host-parasite interactions represent complex co-evolving systems in which genetic variation within a species can significantly affect selective pressure on traits in the other (for example via inter-species indirect genetic effects). While often viewed as a two-species interaction between host and parasite species, some systems are more complex due to the involvement of symbionts in the host that influence its immunity, enemies of the host, and the parasite through intraguild predation. However, it remains unclear what the joint effects of intraguild predation, defensive endosymbiosis, within-species genetic variation and indirect genetic effects on host immunity are. We have addressed this question in an important agricultural pest system, the pea aphid Acyrthosiphon pisum, which shows significant intraspecific variability in immunity to the parasitoid wasp Aphidius ervi due to immunity conferring endosymbiotic bacteria. In a complex experiment involving a quantitative genetic design of the parasitoid, two ecologically different aphid lineages and the aphid lion Chrysoperla carnea as an intraguild predator, we demonstrate that aphid immunity is affected by intraspecific genetic variation in the parasitoid and the aphid, as well as by associated differences in the defensive endosymbiont communities. Using 16s rRNA sequencing, we identified secondary symbionts that differed between the lineages. We further show that aphid lineages differ in their altruistic behaviour once parasitised whereby infested aphids move away from the clonal colony to facilitate predation. The outcome of these complex between-species interactions not only shape important host-parasite systems but have also implications for understanding the evolution of multitrophic interactions, and aphid biocontrol.

scholarly journals Emergence sexual maturation and oviposition of Aphidius ervi (Hymenoptera Aphidiidae)

2004 ◽  
Vol 57 ◽  
pp. 214-220 ◽  
Author(s):  
X.Z. He ◽  
Q. Wang ◽  
D.A.J. Teulon
Keyword(s):  
Biological Control ◽  
Life Cycle ◽  
Sexual Maturation ◽  
Acyrthosiphon Pisum ◽  
Aphid Species ◽  
Pea Aphid ◽  
Aphidius Ervi ◽  
Oviposition Period ◽  
Courtship Display ◽  
Dark Conditions

Aphidius ervi Haliday is an important parasitoid of several aphid species and information is needed for the development of massrearing techniques and better understanding of biological control ecology The emergence sexual maturation and oviposition of A ervi on pea aphid Acyrthosiphon pisum (Harris) was studied in the laboratory at 201deg;C and 6070 RH with 168 h lightdark About 95 of parasitoids emerged during the photophase Females needed a significantly longer time than males to complete their life cycle Newly emerged males were able to perform their courtship display but failed to mate until they were 4 h old; newly emerged females were able to respond to males courtship display and mate Females attacked aphids in both light and dark conditions The number of eggs laid and parasitism (number of aphids parasitised) per oviposition bout (2 h oviposition period) were significantly greater in the photophase than in the scotophase

THERMAL CONSTANTS FOR DEVELOPMENT OF THE PEA APHID (HOMOPTERA: APHIDIDAE) AND SOME OF ITS PARASITES

1977 ◽  
Vol 107 (4) ◽  
pp. 419-423 ◽  
Author(s):  
A. Campbell ◽  
M. Mackauer
Keyword(s):  
First Generation ◽  
Acyrthosiphon Pisum ◽  
Pea Aphid ◽  
Aphidius Ervi ◽  
Temperature Threshold ◽  
Thermal Constants ◽  
Lower Temperature Threshold ◽  
Lower Temperature ◽  
The Relationship ◽  
Generation Offspring

AbstractThe relationship between the temperature and the speed of development is described for the Kamloops ‘biotype’ of the pea aphid, Acyrthosiphon pisum, and some of its associated hymenopterous parasites. The primary parasites are: Aphidius ervi ervi, A. ervi pulcher, A. smithi, and Praon pequodorum; and the secondary parasites are: Asaphes lucens and Dendrocerus niger. For each species the lower temperature threshold for development and the time-to-adult was determined under constant laboratory conditions using field-grown alfalfa as a host plant for the pea aphid and the first-generation offspring of field-collected aphids and parasites. The thermal constants enable the prediction of aphid and parasite population growth, as influenced by temperature, on a physiological time-scale.

Waxy bloom in peas influences the performance and behavior of Aphidius ervi, a parasitoid of the pea aphid

2004 ◽  
Vol 110 (3) ◽  
pp. 257-265 ◽  
Author(s):  
Gary C. Chang ◽  
Jeff Neufeld ◽  
Daniel Durr ◽  
Patrick S. Duetting ◽  
Sanford D. Eigenbrode
Keyword(s):  
Pea Aphid ◽  
Aphidius Ervi ◽  
And Behavior
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