Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-24T16:52:40.140Z Has data issue: false hasContentIssue false
  • English
  • Français

Reproductive Isolation and the Integrity of Two Sympatric Species of Choristoneura (Lepidoptera: Tortricidae)1

Published online by Cambridge University Press:  31 May 2012

Stanley G. Smith
Get access Rights & Permissions [Opens in a new window]

Extract

According to Dobzhansky (1951a, p. 262) “Species are … groups of populations the gene exchange between which is limited or prevented by one, or by a combination of several, reproductive isolating mechanisms”. This definition follows from his concept of a species not as a static unit but as a stage in the process of evolutionary divergence. Limitation or prevention of gene exchange is a property of geographic and reproductive isolation (Mayr, 1912), the various types of which Dobzhansky lists as follows:

I. Geographic or Spatial Isolation

II. Reproductive Isolation

A. Ecological Isolation

B. Seasonal or Temporal Isolation

C. Sexual, Psychological or Ethnological Isolation

D. Mechanical Isolation

E. Gametic Isolation

F. Hybrid Inviability

G. Hybrid Sterility

H. Hybrid Breakdown

Type
Articles
Information
The Canadian Entomologist , Volume 85 , Issue 4 , April 1953 , pp. 141 - 151
Copyright
Copyright © Entomological Society of Canada 1953

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

Brown, A. W. A., and Mac Kay, M., 1943. The jack pine budworm and the spruce budworm, Cacoecia fumiferana Clem. (Tortricidae). Can. Ent. 75: 207–211.CrossRefGoogle Scholar
Dobzhansky, T. 1951a. Genetics and the origin of species. 3rd Ed.Columbia University Press, N.Y.Google Scholar
Dobzhansky, T. 1951b. Experiments on sexual isolation in Drosophila. X. Reproductive isolation between Drosophila pseudoobscura and Drosophila persimilis under natural and under laboratory conditions. Proc. Nat. Acad. Sci., 37: 792–796.CrossRefGoogle ScholarPubMed
Freeman, T. N. 1953. The spruce budworm, Choristoneura fumiferana (Clem.), and an allied new species on pine (Lepidoptera: Tortricidae). Can. Ent., 75: 121.CrossRefGoogle Scholar
Graham, S. A. 1935. The spruce budworm on Michigan pine. U. of Mich. School of Forestry, Bull. No. 6.Google Scholar
MacKay, M. 1953. The larvae of Choristoneura fumtferana (Clem.) and C. pinus Free. (Lepidoptera, Tortricidae), Can. Ent., 75: 128.CrossRefGoogle Scholar
Mayr, E. 1942. Systematics and the origin of species. Columbia University Press, N.Y.Google Scholar
Smith, S. G. 1944. The reproduction of the nucleus. Sci. Agric., 24: 491–509.Google Scholar
Smith, S. G. 1949. Isolation mechanisms operating between populations of Choristoneura fumiferana on different host trees. Proc. VIIIth Int. Cong. Genetics. Hereditas, Suppl. Vol. 667–668.Google Scholar
Wellington, W. G. 1948. The light reactions of the spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae). Can. Ent., 80: 56–82.CrossRefGoogle Scholar