CONE AND SEED INSECTS IN NORWAY SPRUCE [PICEA ABIES (L) KARST.]
DOI:
https://doi.org/10.54652/rsf.2010.v40.i1.153Keywords:
Cydia strobilella (L.), Plemeliella abietina (Seitn.), Megastigmus strobilobius (Ratz.), climateAbstract
UDK 582.475:595.7(481)
581.47/.48:632.7
Frequency of gall and spruce insects (Picea abies (L) Karst.) from three Norwegian regions were analyzed during the period from 1968 to 2006, from the x-ray photos of samples of seeds and files of control of gall samples. Higher temperatures, especially during the last 20 years, have most probably contributed to more frequent years of good production of spruce seeds. The paper has indicated the following gall and spruces insects: Cydia strobilella (L.), Plemeliella abietina (Seitn.), Megastigmus strobilobius (Ratz.) Kaltenbachiola strobi (Winn.), Strobilomyia anthraciana (Czerny.), Dioryctria abietella (Den. et Schiff.), Eupithecia abietaria (Ratz.), and E. analoga (Zett.). The pathogen fungi were observed as well: Pucciniastrum areolatum ((Fr.) G.H. Otth.) and Chrysomyxa pirolata (Wint.).
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