Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-27T05:20:11.302Z Has data issue: false hasContentIssue false
  • English
  • Français

A NOTE ON TRENDS IN POPULATIONS OF SEMIOTHISA SEXMACULATA (LEPIDOPTERA: GEOMETRIDAE), WITH COMMENTS ON A RECENT PAPER BY BERGERON AND BUCKNER ON THE SAME TOPIC

Published online by Cambridge University Press:  31 May 2012

W. G. H. Ives
W. G. H. Ives
Affiliation:
Northern Forest Research Centre, Canadian Forestry Service, Edmonton, Alberta
Get access Rights & Permissions [Opens in a new window]

Extract

The trapping devices used in sampling larch sawfly populations (Ives et al. 1968) caught other species of insects as well. The oil traps gave information on the relative abundance of any insects that dropped from the trees to pupate or spin cocoons. One of the more common species trapped in this way, apart from the larch sawfly, was the green larch looper, Semiothisa sexmaculata Packard. It is a solitary-feeding geometrid, and although its seasonal development tends to be later than the larch sawfly, the numbers caught provide some indication of relative abundance from year to year.

Type
Articles
Information
The Canadian Entomologist , Volume 108 , Issue 7 , July 1976 , pp. 783 - 784
Copyright
Copyright © Entomological Society of Canada 1976

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bergeron, J. M. 1972 a. Semiothisa species (Lepidoptera: Geometridae) in southern Manitoba bog forests. Manit. Ent. 6: 54–62.Google Scholar
Bergeron, J. M. 1972 b. The role of small mammals in the population dynamics of the Semiothisa complex, Lepidoptera: Geometridae: Ennominae. Ph.D. Thesis, Univ. of Manitoba, Winnipeg. 268 pp.Google Scholar
Bergeron, J. M. and Buckner, C. H.. 1974. Some aspects of the population dynamics of Semiothisa species (Geometridae: Ennominae) in southern Manitoba larch bogs. Can. Ent. 106: 957–968.CrossRefGoogle Scholar
Buckner, C. H. 1959. The assessment of larch sawfly cocoon predation by small mammals. Can. Ent. 91: 275–282.Google Scholar
Ives, W. G. H. 1972. Population and mortality assessment during the egg and larval stages of the larch sawfly, Pristiphora erichsonii (Htg.). Can. Ent. 94: 256–268.Google Scholar
Ives, W. G. H. 1967. Determination of premature larval drop and other causes of larch sawfly mortality. Can. Ent. 99: 1121–1131.CrossRefGoogle Scholar
Ives, W. G. H. 1976. The dynamics of larch sawfly (Hymenoptera: Tenthredinidae) populations in southeastern Manitoba. Can. Ent. 108: 701–730.Google Scholar
Ives, W. G. H., Turnock, W. J., Buckner, C. H., Heron, R. J., and Muldrew, J. A.. 1968. Larch sawfly population dynamics: techniques. Manit. Ent. 2: 5–36.Google Scholar
Turnock, W. J. 1957. A trap for insects emerging from the soil. Can. Ent. 89: 455–456.CrossRefGoogle Scholar
Varley, G. C. and Gradwell, G. R.. 1960. Key factors in population studies. J. Anim. Ecol. 29: 399–401.Google Scholar