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Articles containing the keyword 'parasites'

Category : Article

article id 5276, category Article

Kari Heliövaara, Rauno Väisänen. (1986). Parasitization in Petrova resinella (Lepidoptera, Tortricidae) galls in relation to industrial air pollutants. Silva Fennica vol. 20 no. 3 article id 5276. https://doi.org/10.14214/sf.a15455

Keywords: Pinus sylvestris; Scots pine; insect damages; air pollution; Petrova resinella; gall stage; parasites

Abstract | View details | Full text in PDF | Author Info

Paratization of Petrova resinella L. in the gall stage was studied in the surrounding of Harjavalta, south-western Finland, in relation to industrial air pollution. Of the studied 283 galls, 28% produced a moth, 52% of the larvae/pupae were paratisized, and 20% were empty or contained a dead larva. The proportion of paratisized galls did not depend on the distance from emission sources of industrial air pollutants.

The PDF includes an abstract in Finnish.

Heliövaara, E-mail: kh@mm.unknown
Väisänen, E-mail: rv@mm.unknown

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Heikurainen L., (1954) Regeneration of Scots pine stands of pine swamps.. Acta Forestalia Fennica vol. 61 no. 27 article id 7439 (remove) | Edit comment

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