Overwintering of Coccinella septempunctata (Coleoptera: Coccinellidae) at different altitudes in the Karkonosze Mts, SW Poland

Title:

Overwintering of Coccinella septempunctata (Coleoptera: Coccinellidae) at different altitudes in the Karkonosze Mts, SW Poland

Creator:

Ceryngier, Piotr

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:2ccecd01-8014-4fe2-a909-b21dcf3a3901
uuid:2ccecd01-8014-4fe2-a909-b21dcf3a3901

Subject:

Coccinella septempunctata, hibernation, body size, sex ratio, ovarian development, mortality, parasitoids, Dinocampus coccinellae, and entomopathogenic fungi

Type:

article, model:article, and TEXT

Description:

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.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

European Journal of Entomology | 2000 Volume:97 | Number:3

Harvested from:

CDK

Metadata only:

false