Bollettino di zoologia agraria e bachicoltura

Vol. 31 No. 2 (1999): Serie 2
Articoli

Egg parasitoids of the processionary moth Thaumetopoea pityocampa (Den. & Schiff.) collected in Albania

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  • PLAMEN MIRCHEV,
  • GERHARD H. SCHMIDT,
  • GIORGI TSANKOV,
  • STAVRI PLLANA
PLAMEN MIRCHEV
Forest Research Institute, 132 Kl. Ohridski Blv., Sofia, Bulgaria
GERHARD H. SCHMIDT
Section Entomology, Faculty of Biology, University of Hannover, Herrenhiiuser Str.2, Hannover, Germany
GIORGI TSANKOV
Forest Research Institute, 132 Kl. Ohridski Blv., Sofia, Bulgaria
STAVRI PLLANA
Forest Service, R. Ratniz Aranitsani 9, Korca, Albania

Published 2024-12-06

Keywords

  • Thaumetopoea pityocampa,
  • egg parasitoids,
  • Albania,
  • hyper-parasitism,
  • mortality of egg parasitoids,
  • phenology
    • ...More
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How to Cite

MIRCHEV, P., SCHMIDT, G. H., TSANKOV, G., & PLLANA, S. (1999). Egg parasitoids of the processionary moth Thaumetopoea pityocampa (Den. & Schiff.) collected in Albania. Bollettino Di Zoologia Agraria E Bachicoltura, 31(2), 152–165. Retrieved from https://riviste.unimi.it/index.php/bzab/article/view/27484

Abstract

Egg parasitoids and egg parasitism were studied in 32 egg batches of the
pine processionary moth collected near Korca/ Albania in heights of 1050-1400 m in
August-September 1997, after caterpillars' hatch. In this mountainous region, Baryscapus
servadeii (Dom.) was most abundant at the higher level, followed by
Ooencyrtus pityocampae (Mercet) at the lower level. Trichogramma sp. was only
found at 1400 m a.s.l. Additionally, the hyper-parasitoid Baryscapus transversalis
Graham was established parasitizing dominantly the eggs placed near the beginning
and the end of the batches. The grade of parasitism of the various egg batches varied
from zero to 61 %. The emergence dynamics of the parasitoids showed a peak of B.
transversalis in November of the year, in which the host eggs were layed. B. servadeii
emerged mainly in J anuary of the following year. A high percentage of egg parasitoids
died in the eggs, mainly from O. pityocampae and the polyembryonic Trichogramma
sp. (see also Tsankov et al., 1996a); up to 12 pupae were found in one egg.

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