The distribrution of eggs laid by the pine beauty moth Panolis flammea (Denis et Schiff.) (Lep., Noctuidae) on lodgepole pine
1988
Watt, A.D. (Institute of Terrestrial Ecology, Edinburgh (UK)) | Leather, S.R.
The distribution of eggs laid by the pine beauty moth on lodgepole pine was investigated on 177 trees at two sites in northern Scotland in 1985-86. The average total number of eggs per tree was 1845. The average number of eggs per whorl rose from 15.8 on the leading shoot to 214.6 on the fifth whorl, then dropped gradually to 56.4 on the fifteenth whorl. The proportion of eggs laid on each whorl was independent of the total number of eggs laid on the tree, and the number of eggs laid per length of needle-bearing branch was greatest on the branches of the first three whorls
显示更多 [+] 显示较少 [-]