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Gewählte Publikation:

Goertz, D; Pilarska, D; Kereselidze, M; Solter, LF; Linde, A.
(2004): Studies on the impact of two Nosema isolates from Bulgaria on the gypsy moth (Lymantria dispar L.).
J Invertebr Pathol. 2004; 87(2-3):105-113 FullText FullText_BOKU

We investigated host-parasite interactions of two Nosema-type microsporidian isolates recovered from populations of Lymantria dispar L. in northwestern Bulgaria, one near Veslec and one near Levishte. Bioassay studies produced information on development, stage specific mortality, pupation, and adult eclosion of infected individuals. Horizontal transmission of the two isolates was investigated in a second set of experiments. At dosages ranging from 2 x 102 to 5 x 104 spores/mul, the infection rates varied between 77 and 100% for the isolate from Veslec and between 92 and 99% for the Levishte isolate. The Veslec isolate caused a slightly higher mortality rate and the median time to death was shorter compared to the isolate from Levishte. The total mortality for both isolates varied between 79 and 99%, independent of spore dosages. A lower relative growth rate was recorded for male and female L. dispar larvae infected with either isolate during the third larval instar and a higher relative growth rate during the fourth instar compared to the control groups. Pupal weight did not differ significantly among females, but male infected pupae were heavier than the controls. Nosema sp. [Veslec] was as efficiently transmitted as Nosema sp. [Levishte]; 42% of the susceptible larvae became infected with the Veslec isolate when uninfected larvae were exposed to infected larvae; 43% of larvae became infected with the Nosema sp. [Levishte]. The latency period varied between 7 and 8 days for both isolates. (C) 2004 Elsevier Inc. All rights reserved.
Autor*innen der BOKU Wien:
Goertz Dörte
Find related publications in this database (using NML MeSH Indexing)
Animals -
Bulgaria -
Disease Transmission, Infectious -
Female -
Host-Parasite Interactions -
Male -
Moths - parasitology
Nosema - pathogenicity
Pest Control, Biological -

Find related publications in this database (Keywords)
Lymantria dispar
Nosema spp.
horizontal transmission
host-parasite interaction

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