ISSN:
1570-7458
Keywords:
aphid parasitoid
;
Aphidius ervi
;
barley yellow dwarf virus
;
parasitoid development
;
Sitobion avenae
;
parasitoid – virus interaction
;
virus transmission
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Interactions between barley yellow dwarf luteovirus (BYDV) and the aphid parasitoid, Aphidius ervi Haliday (Hymenoptera: Aphidiidae), were investigated while sharing the vector/host, Sitobion avenae (F.) (Homoptera: Aphididae). Aphids, which were parasitized during their second larval stadium, had access to virus-infected plants before, immediately after, or several days after parasitoid attack. The larval development of A. ervi in S. avenae was significantly delayed when virus acquisition took place before or shortly after the parasitoid had hatched, but not when the parasitoid was at the second larval stage during virus acquisition. Similarly, the presence of BYDV led to a significantly higher aphid mortality when they acquired virus up to and including the time that A. ervi was at the first larval stage. Adult female parasitoids deposited fewer eggs in viruliferous aphids. Virus transmission was not reduced by parasitization, and in some experiments aphids which were subjected to parasitoid attack transmitted BYDV more efficiently than unattacked insects.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1003132403595
