Hostname: page-component-77c89778f8-swr86 Total loading time: 0 Render date: 2024-07-16T14:58:39.867Z Has data issue: false hasContentIssue false
  • English
  • Français

Ecological Notes on the Sirex Wood Wasps and their Parasites

Published online by Cambridge University Press:  10 July 2009

H. S. Hanson
H. S. Hanson
Affiliation:
Farnham House Laboratory, Imperial Institute of Entomology.
Get access Rights & Permissions [Opens in a new window]

Extract

1. The ecological study of Sirex and its parasites was begun in 1927 and continued while making large-scale collections of the parasites for shipment to New Zealand with the ultimate object of the control of Sirex noctilio, a species of woodwasp which has been established in the Dominion for many years.

2. A brief outline of the life-cycle of Sirex and the parasites is given. The difference in the method of attack by the parasites on the host is described, and some points of interest in connection with insect behaviour are discussed.

3. The methods of collection are described and particulars given about the number of parasites collected.

4. The inter-relationship of the host and parasites is discussed. It is shown that a single generation of Sirex can support three generations of Rhyssa and one generation of Ibalia, and that the effects of parasitism by Rhyssa are cumulative. The percentage of parasitism by Rhyssa cannot, therefore, be calculated on the results of any one year. Rhyssa is intrinsically superior to Ibalia and super-parasitism of Ibalia by Rhyssa is of very frequent occurrence. It is shown that the figures for parasitism by Ibalia obtained by the dissection of Sirex larvae collected from a number of logs, over a period including summer months, are liable to be very misleading.

Type
Original Article
Information
Bulletin of Entomological Research , Volume 30 , Issue 1 , April 1939 , pp. 27 - 65
Copyright
Copyright © Cambridge University Press 1939

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

Annand, J. F. (1910). Observations on the Large Larch Sawfly.—Quart. J. For., 4, pp. 203–221.Google Scholar
Buchner, P. (1928). Holznahrung und Symbiose, 64 pp. Berlin, J. Springer.CrossRefGoogle Scholar
Clark, A. F. (1927). The infestation of Sirex juvencus, in Canterbury.—Te Kura Ngahere, Christchurch 2, pp. 10–16.Google Scholar
Clark, A. F. (1936). Biological control of Forest Insect Pests.—N.Z. J. Sci. Tech., 18, pp. 585–588.Google Scholar
Chrystal, R. N. (1928). The Sirex Wood-wasps and their importance in forestry.—Bull. Ent. Res., 19, pp. 219–247.CrossRefGoogle Scholar
Chrystal, R. N. (1930). Studies of the Sirex parasites.—Oxf. For. Mem., 11, 63 pp.Google Scholar
Hanson, H. S. (1937). Notes on the ecology and control of Pine Beetles in Great Britain.—Bull. Ent. Res., 28, pp. 185–236.CrossRefGoogle Scholar
Hewitt, C. G. (1912). The Large Larch Sawfly.—Bull. Canada Dep. Agric., (2) 10 (Ent. Bull. 5), 42 pp.Google Scholar
Mansour, K., & Mansour-Bek, J. J. (1935). On the digestion of wood by insects.—J. Exp. Biol., 11, pp. 243–256.CrossRefGoogle Scholar
Miller, D. & Clark, A. F. (1935). Control of forest insect pests.—N.Z. J. Sci. Tech., 16, pp. 301–307.Google Scholar
Miller, D. & Clark, A. F. (1935). Sirex noctilio and its parasite in New Zealand.—Bull. Ent. Res., 26, pp. 149–154.CrossRefGoogle Scholar
Miller, D. & Clark, A. F. (1937). The establishment of Rhyssa persuasoria in New Zealand.—N.Z. J. Sci. Tech., 19, pp. 63–64.Google Scholar
Munro, J. W. (1931). The biological control of forest insects.—Emp. For. J., 10, pp. 209–214.Google Scholar
Scheidter, F. (1923). Zur Lebensweise unserer Holzwespen.—Z. Schädlingsbekampfung, 1, pp. 89–98.Google Scholar
Trägårdh, I. & Butovitsch, V. (1938). Some forest entomological methods and conceptions.—Bull. Ent. Res., 29, pp. 191–210.CrossRefGoogle Scholar