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Overwintering of Coccinella septempunctata (Coleoptera: Coccinellidae) at different altitudes in the Karkonosze Mts, SW Poland
- Source :
- European Journal of Entomology, Vol 97, Iss 3, Pp 323-328 (2000)
- Publication Year :
- 2000
- Publisher :
- Institute of Entomology, Biology Centre, Czech Academy of Science, 2000.
-
Abstract
- The body length variation, sex ratio, ovarian development and natural enemies (parasitoids and entomopathogenic fungi) of Coccinella septempunctata were studied during two dormancy seasons in three hibernation sites in the Karkonosze mountains: the top of Mt. Śnieżka (1,600 m a.s.l.), the top of Mt. Szrenica (1,360 m a.s.l.) and Karpacz, the village at the foot of Mt. Śnieżka (800 m a.s.l.). The proportion of females and mean body length increased with the altitude of the hibernaculum. Post-diapause maturation of ovaries occurred earlier in spring in females from Karpacz than from the mountain tops. The rate of parasitization of C. septempunctata by its most common parasitoid, the braconid Dinocampus coccinellae, in both seasons exceeded 70% at Karpacz and was 14-28% in the mountain top hibernacula. In contrast, the incidence of fungal infection (mainly by Paecilomyces farinosus and Beauveria bassiana) was higher in beetles overwintering on the two mountain tops.
Details
- Language :
- English
- ISSN :
- 12105759 and 18028829
- Volume :
- 97
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- European Journal of Entomology
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.1b817025ef6496f9d4849b706a7ad95
- Document Type :
- article
- Full Text :
- https://doi.org/10.14411/eje.2000.049