|
|
| 21. |
Within-tree Effects of Bark Beetle Insect Associates on the Emergence ofIps calligraphus(Coleoptera: Scolytidae) |
| |
Energy & Environmental Science,
Volume 15,
Issue 5,
1986,
Page 1104-1108
Mitchel C. Miller,
Preview
|
PDF (345KB)
|
|
摘要:
Bolts attacked byIps calligraphus(Germar) were subjected to complete exclusion of insect enemies, exclusion of sawyers, or exposure to all insect enemies. Results show that substantial subcorticalI. calligraphusmortality in spring and summer months is due to insect enemies. However, from midsummer through fall, subcortical beneficial insects and additionalIpsmortality is produced by foraging of southern pine sawyer,Monochamus titillator(F.). Comparison of results with those of a temporal exclusion study showed that insect natural enemies can affectI. calligraphusif residual beetle and beneficial insect populations are maintained.
ISSN:1754-5692
DOI:10.1093/ee/15.5.1104
出版商:Oxford University Press
年代:1986
数据来源: OUP
|
| 22. |
Oviposition by Summer and Winter Forms of Pear Psylla (Homoptera: Psyllidae) on Dormant Pear Budwood |
| |
Energy & Environmental Science,
Volume 15,
Issue 5,
1986,
Page 1109-1110
B. A. Butt,
C. Stuart,
Preview
|
PDF (150KB)
|
|
摘要:
The winter form of pear psylla,Psylla pyricolaFoerster, readily oviposited on pear budsticks and leaves; the summer form had a strong preference for leaves and was reluctant to oviposit on budsticks.
ISSN:1754-5692
DOI:10.1093/ee/15.5.1109
出版商:Oxford University Press
年代:1986
数据来源: OUP
|
|
首页
