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GEOGRAPHICAL AND HISTORICAL VARIABILITY IN POPULATION PATTERNS AND LIFE SYSTEMS OF THE LARCH SAWFLY (HYMENOPTERA: TENTHREDINIDAE)1

Published online by Cambridge University Press:  31 May 2012

W. J. Turnock
Affiliation:
Canadian Forestry Service, Department of the Environment, Ottawa

Abstract

The larch sawfly, Pristiphora erichsonii (Hartig), has exhibited several distinctive population patterns in different parts of its Holarctic distribution and during different periods of time in some geographic areas. These patterns include a latent type, where the larch sawfly is never a pest, a permanent type, which causes severe damage, and several temporary types characterized by periodic outbreaks. The different population patterns are associated with differences in the life systems of the populations: the stable latent type with a diverse environment and a rich parasite complex; the stable permanent type with an impoverished parasite complex, interactions with food availability and no effective specific parasites; and the temporary type with an intermediate parasite complex which includes one very effective specific larval parasite. Thus, population stability is related to either maximal or minimal diversity in numbers of parasite species and instability to intermediate levels. The comparison of population patterns and life systems provides a guide to the development of biological control programs.

Résumé

La Tenthrède du Mélèze, Pristiphora erichsonii (Hartig), a montré divers types de population à travers les différentes parties de sa distribution holarctique et à différentes périodes de temps dans certaines aires géographiques, dont : un type latent où l’insecte ne constitue jamais un ravageur, un type permanent entraînant de graves méfaits et plusieurs types temporaires caractérisés par des infestations périodiques. Ces divers types démographiques observés chez la Tenthrède du Mélèze se trouvent associés à des différences relatives aux modes de vie des colonies : le type latent stable correspondant à un environnement changeant et un complexe parasitaire riche, le type permanent stable à un complexe parasitaire affaibli et à des interactions entre les disponibilités d’ordre nutriciel et l’absence des parasites spécifiques efficaces, et le type temporaire à un complexe parasitaire moyen avec un parasite spécifique des larves très efficace. Ainsi, l’équilibre démographique se trouve-t-il lié à la diversité numérique maximum ou minimum des espèces parasitaires et à l’instabilité aux niveaux intermédiaires. La comparaison de ces types de population et modes de vie fournit un guide pour la mise au point des programmes de lutte biologique.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1972

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References

Baird, A. B. 1923. Some notes on the natural control of the larch sawfly and larch casebearer in New Brunswick in 1922. Proc. Acadian ent. Soc. 8: 158171.Google Scholar
Bakke, A. 1957. Skadeinsekter på skogen i 1955 og 1956. Saertrykk fra Norsk Skogbruk., nr. 5.Google Scholar
Baltensweiler, W. 1966. Zur Erklarung der Massenvermehrung des Grauen Larchenwicklers (Zeiraphera griseana Hb = dineana Gn). I. Die Massenvermehrungen in Mitteleuropa. Schweiz. Z. Forst. 117: 466491.Google Scholar
Boas, J. E. V. 1924. Dansk Forstzoologi. Gyldendals Forlagstrykkeri. Kbhvn. 2nd ed. pp. 423426.Google Scholar
Buckner, C. H. 1966. The role of vertebrate predators in the biological control of forest insects. A. Rev. Ent. 11: 449470.CrossRefGoogle ScholarPubMed
Buckner, C. H. and Turnock, W. J.. 1965. Avian predation on the larch sawfly, Pristiphora erichsonii (Htg.) (Hymenoptera: Tenthredinidae). Ecology 46: 233236.CrossRefGoogle Scholar
Burrell, R. D., Maple, J. D., and Sato, K.. 1938 (unpub. report). Sawfly project, parasite investigations, Yokahama, Japan, 1934–1938. U.S.D.A. Laboratory, Yokahama, Japan.Google Scholar
Carroll, W. J. 1964. The larch sawfly in Newfoundland. Can. Dep. For. Bi-mon. Progr. Rep. 20(5): 1.Google Scholar
Clark, L. D., Geier, P. W., Hughes, R. D., and Morris, R. F.. 1967. The ecology of insect populations in theory and practice. Methuen, London.Google Scholar
Drooz, A. T. 1960. The larch sawfly, its biology and control. U.S. Dep. Agric. tech. Bull. 1212.Google Scholar
Drouin, J. A. and Turnock, W. J.. 1967. Occurrence of the eastern larch beetle in Manitoba and Saskatchewan. Manitoba Ent. 1: 1820.Google Scholar
Eichhorn, O. 1965. Uber einige Larchenschadlinge und ihre Parasiten in Japan, Europa und Kanada. Beitr. Ent. 15: 111126.Google Scholar
Frilli, F. 1964. Studio morpho-biologico della Pristiphora erichsonii (Hartig) (Hym. Tenthredinidae) con notizie sui suoi parassiti. Ann. della Facolta Agric. 4(3).Google Scholar
Heron, R. J. 1966. The reproductive capacity of the larch sawfly and some factors of concern in its measurement. Can. Ent. 98: 561578.CrossRefGoogle Scholar
Hewitt, C. G. 1912. The large larch sawfly (Nematus erichsonii). Can. Dep. Agric. Bull. 10, 2nd ser. Ent. Bull. 5.Google Scholar
Hopkins, A. D. 1908. Notable depredations by forest insects. U.S. Dep. Agric. Yearb. 1907. pp. 153, 154, 158.Google Scholar
Hopping, G. R., Leach, H. B., and Morgan, C. V. G.. 1943. The larch sawfly, Pristiphora erichsonii (Hartig) in British Columbia, with special reference to the cocoon parasites Mesoleius tenthredinis Morley and Tritneptis klugii (Ratzeburg). Scient. Agric. 24: 5363.Google Scholar
Ives, W. G. H. 1967 a. Relations between invertebrate predators and prey associated with larch sawfly eggs and larvae on tamarack. Can. Ent. 99: 607622.CrossRefGoogle Scholar
Ives, W. G. H. 1967 b. Determination of premature larval drop and other causes of larch sawfly mortality. Can. Ent. 99: 11211131.CrossRefGoogle Scholar
Ives, W. G. H., Turnock, W. J., Buckner, C. H., Heron, R. J., and Muldrew, J. A.. 1968. Larch sawfly population dynamics: techniques. Manitoba Ent. 2: 536.Google Scholar
Levetjev, V. A. 1914. Observations on the biology of Nematus erichsonii L., Athalia spinarum F., and Hylemyia (Anthomyia) antiqua Mg. (In Russian.) Materials for the study of injurious insects of the Govt. of Moscow, v: 94–111. Rev. appl. Ent. (A) 2: 372 (1914).Google Scholar
Maw, M. G. 1960. Notes on the larch sawfly, P. erichsonii (Htg.) (Hym. Tenth.) in Great Britain. Ent. Gaz. 11: 4349.Google Scholar
McGugan, B. M. and Coppel, H. C.. 1962. Biological control of forest insects 1910–1958. In A review of the biological control attempts against insects and weeds in Canada. Commonw. Inst. biol. Contr. tech. Commun. 2, Pt. II, pp. 35216.Google Scholar
Muldrew, J. A. 1953. The natural immunity of the larch sawfly Pristiphora erichsonii (Htg.) to the introduced parasite Mesoleius tenthredinis Morley, in Manitoba and Saskatchewan. Can. J. Zool. 31: 313332.CrossRefGoogle Scholar
Muldrew, J. A. 1964. The biological control program against the larch sawfly. Proc. ent. Soc. Man. 20: 63.Google Scholar
Munro, J. W. 1923. Canadian forest insect problems. Empire For. J. 2: 192197.Google Scholar
Nerén, C. H. 1892. Entomologiska Anteckingar. Ent. Tidskr. 7: 5768.Google Scholar
Polyakov, V. Ya. 1928. The large larch sawfly (Nematus erichsonii Hrt.). (In Russian.) Trudy sib. Inst. Sel. Khoz. Lesovod. ix, Nos. 1–5: 199–215. Rev. appl. Ent. (A) 17: 1 (1929).Google Scholar
Price, P. W. 1970. Characteristics permitting coexistence among parasitoids of a sawfly in Québec. Ecology 51: 445454.CrossRefGoogle Scholar
Pschorn-Walcher, H. 1961. Biological control of forest insects. Unasylva 15: 7074.Google Scholar
Pschorn-Walcher, H. and Eichhorn, O.. 1963. Investigations on the ecology and natural control of the larch sawfly (Pristiphora erichsonii (Htg.)) (Hym., Tenthredinidae) in central Europe. I. Abundance, life history and ecology of P. erichsonii and other sawflies on larch. Commonw. Inst. biol. Contr. tech. Bull. 3. pp. 5182.Google Scholar
Pschorn-Walcher, H. and Zinnert, K. D.. 1971. Investigations on the ecology and natural control of the larch sawfly (Pristiphora erichsonii Htg., Hym.: Tenthredinidae) in central Europe. II. Natural enemies: their biology and ecology and their role as mortality factors in P. erichsonii. Commonw. Inst. biol. Contr. tech. Bull. 14. pp. 150.Google Scholar
Reeks, W. A. 1954. An outbreak of the larch sawfly (Pristiphora erichsonii (Htg.)) in the Maritime Provinces (Hymenoptera: Tenthredinidae) and the role of parasites in its control. Can. Ent. 86: 471480.CrossRefGoogle Scholar
Schøyen, T. H. 1914. Indberetning om skadeinsekter og snyltesopp paa skoystaeerne i 1913. Indberetning om det Norske skoyvaesen 1913. Kristiana (1914), pp. 140149. (Rev. appl. Ent. (A) 3: 696 (1915).)Google Scholar
Tragardh, I. 1939. Sveriges Skogsinsekter. Hugo Gebers Forlag, Stockholm: 350.Google Scholar
Turnock, W. J. 1960. Ecological life-history of the larch sawfly, Pristiphora erichsonii (Htg.) (Hymenoptera: Tenthredinidae), in Manitoba and Saskatchewan. Can. Ent. 92: 500516.CrossRefGoogle Scholar
Turnock, W. J. and Muldrew, J. A.. 1971. Pristiphora erichsonii (Hartig), larch sawfly (Hymenoptera: Tenthredinidae). In Biological control programmes against insects and weeds in Canada, 1959–1968. Commonw. Inst. biol. Contr. tech. Commun. 4. pp. 175194.Google Scholar
Vappula, N. A. 1935. The occurrence of injurious animals in Finland in 1933. (In Finnish.) Valt. Maatalousk. Tied. (Bull. Govt. Agrie. Res.), No. 86. Porvoo. (Rev. appl. Ent. (A) 24: 349 (1936).)Google Scholar
Verzhutskii, B. N. 1966. Pilil'shchiki Pribaikal'ya (Sawflies of the Baikal area). Acad. Sci. U.S.S.R., Siberian Div., Eastern Siberian Biol. Inst. Nauka (Science), Moscow.Google Scholar
Vollenhoven, S. C. S. van. 1869. Niewe naamlist van Nederlandsche Vliesvlengelige insecten (Hym.). Tijdschr. Ent. 12 (ser. 2): 89127.Google Scholar
Wardle, R. A. 1914. Preliminary observations upon the life-histories of Zenillia pexops B. and B. and Hypamblys albopictus Grav. J. econ. Biol. 9: 85103.Google Scholar
Warren, G. L. and Pardy, K. W.. 1968. Parasite complex of the larch sawfly (Pristiphora erichsonii (Htg.)) in Newfoundland. Can. Dep. For. Rural Dev. Bi-mon. Res. Notes 24: 5.Google Scholar