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Performance of the fir coneworm Dioryctria abietivorella (Grote) as affected by host species and presence or absence of seed cones

Summary

Published in Agricultural and Forest Entomology 1: 189-194

1) Larval performance of Dioryctria abietivorella (Grote) (Lepidoptera: Pyralidae) was compared when insects were reared in white spruce, black spruce and Jack pine seed orchards. For each species, half of the insects developed in the presence of cones, while the other half was maintained on branches without cones.

2) Significantly faster development rates were observed on spruce species when compared to Jack pine. Significant differences in survival were also recorded between the different feeding treatments.

3) The presence of seed cones on spruce species significantly increased insect mean weight compared with branches without cones, but no significant differences were noticed between the different tree species with cones.

4) White spruce is the most suitable host tree for fir coneworm feeding and the availability of seed cones plays an important role in determining D. abietivorella larval performance.

Sector(s): 

Forests

Categorie(s): 

Scientific Article

Theme(s): 

Forestry Research, Forests

Author(s)

TRUDEL, Richard, Éric BEAUCE, Claude GUERTIN and Jean CABANA

Year of publication :

1999

Keywords :

Dioryctria abietivorella, fir coneworm, insect, larval performance, host plant, seed cone, seed orchard, chemical analysis, growth, survival

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