Variability of Norway spruce (Picea abies L.) needles; performance of spruce sawflies (Gilpinia hercyniae Htg.)

• Published in: Oecologia Vol. 77; no. 3; pp. 313 - 320
• Main Author: Jensen, T.S
• Format: Journal Article
• Language: English
• Published: Germany 01.01.1988
• Subjects: carbohydrates; Gilpinia hercyniae; larvae; leaf analysis; nitrogen; Picea abies; quinic acid; Carbohydrates; Nitrogen; Performance; Allelochemicals; Herbivore

Larvae of the spruce sawfly Gilpinia hercyniae were reared on whole branches of Norway spruce, Picea abies. Top and low branches were selected from flowering and nonflowring stands. Sawfly performance from the larval L -stage until the fertile egg stage of the next generation was recorded. Growth an...