Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz (2003) 76, 6-13

M. Barta and L. Cagán (2003)
Entomophthoralean fungi associated with the common nettle aphid (Microlophium carnosum Buckton) and the potential role of nettle patches as reservoirs for the pathogens in landscape
Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz 76 (1), 6-13
Abstract: Populations of the common nettle aphid, Microlophium carnosum Buckton, inhabiting nettle patches in an agricultural landscape were surveyed for entomophthoralean infection during 1998, 1999 and 2001. Five pathogenic species were identified from the aphid in the course of the survey. Erynia neoaphidis Remaudière and Hennebert, Neozygites fresenii (Nowakowski) Remaudière and Keller, and Neozygites microlophii Keller affected aphid colonies every year. Two minor pathogens, Entomophthora planchoniana Cornu and Conidiobolus obscurus (Hall and Dunn) Remaudière and Keller, were observed only in 2001.
An artificial transmission of the three main fungi was carried out to prove horizontal transmission of infection between the common nettle aphid and different aphid species co-occurring in landscape. N. microlophii, probably monophagous pathogen, did not infect any of the six recipient aphid species in the experiment. Transmissions of E. neoaphidis and N. fresenii conidia were successful with five and four aphid species, respectively. The average mortality of tested aphids after transmission ranged from 0 to 33.33 % for E. neoaphidis and from 0 to 15 % for N. fresenii. The potential of nettle patches as natural reservoirs for pathogens in the agroecosystem is discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Marek Barta

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation
population dynamics/epizootiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Entomophthora planchoniana (entomopathogen)			Slovakia
Conidiobolus obscurus (entomopathogen)			Slovakia
Neozygites fresenii (entomopathogen)			Slovakia
Pandora neoaphidis (entomopathogen)			Slovakia