Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-04T19:18:24.301Z Has data issue: false hasContentIssue false
  • English
  • Français

Structural polymorphism in Drosophila subobscura Coll. from various localities in Scotland

Published online by Cambridge University Press:  14 April 2009

G. R. Knight
G. R. Knight
Affiliation:
Agricultural Research Council Unit of Animal Genetics, Institute of Animal Genetics, Edinburgh, 9

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

1. Gunson's salivary chromosome preparations of Drosophila subobscura from widely separated sites in Scotland have been re-examined and inversions recorded according to the Mainx nomenclature.

2. Sixty-four diploid sets only were available. Of these, thirty-seven sets were found to be structurally homozygous on all chromosomes.

3. From Drumnadrochit in the north-central area of Scotland, the inversion found on the E-chromosome, so far as is known, has not previously been described. Its break-points have been noted, and the inversion is named E14.

4. A strain of D. subobscura from the small western island of Iona was the only one found to be completely homozygous in the five long arms of the chromosome set.

5. Samples of D. subobscura from two closely related localities in Midlothian, Scotland, also have been examined. Results are based on the analysis of 120 haploid sets in hybrids between the local race and the standard Küsnacht stock.

6. A slight difference in type and frequency of inversions has been noted between the two populations. The inversion E1+2 was recorded from Dalkeith, but was absent at Heriot, while U1, present at Heriot, was replaced by UST at Dalkeith.

7. The A-chromosome was structurally homozygous throughout.

8. Scottish samples of D. subobscura are characterized by their qualitative simplicity of polymorphism, the variety of inversion types being small. Chromosome orders analysed have been compared with those occurring in Western Europe and Israel.

Type
Research Article
Information
Genetics Research , Volume 2 , Issue 1 , February 1961 , pp. 1 - 9
Copyright
Copyright © Cambridge University Press 1961

References

REFERENCES

Basden, E. B. (1954). The distribution and biology of Drosophilidae (Diptera) in Scotland, including a new species of Drosophila. Trans. roy. Soc. Edinb. 62, 603–654.CrossRefGoogle Scholar
Carson, H. L. (1955). Variation in genetic recombination in natural populations. J. cell. comp. Physiol. 45, suppl. 2, 221–236.CrossRefGoogle ScholarPubMed
Da Cunha, A. B. & Dobzhansky, Th. (1954). A further study of chromosomal polymorphism in Drosophila willistoni in its relation to the environment. Evolution, 8, 119–134.CrossRefGoogle Scholar
Dobzhansky, Th. (1944). II. Chromosomal races in Drosophila pseudoobscura and Drosophila persimilis. Publ. Carneg. Instn, no. 554, 47–144.Google Scholar
Goldschmidt, E. (1956). Chromosomal polymorphism in a population of Drosophila subobscura from Israel. J. Genet. 54, 474–496.CrossRefGoogle Scholar
Goldschmidt, E. (1958). Polymorphism and co-adaptation in natural populations of Drosophila subobscura. Proc. Tenth Int. Congr. Ent. Montreal, 2, 821–828.Google Scholar
Gunson, M. M. (1952). Local chromosome races of Drosophila subobscura. Drosophila Inform. Serv. 26, 104.Google Scholar
Kunze-Mühl, E. & Müller, E. (1958). Weitere Untersuchungen über die Chromosomale Struktur und die Natürlichen Strukturtypen von Drosophila subobscura Coll. Chromosoma, Berl., Bd. 9, 5, 559–570.CrossRefGoogle ScholarPubMed
Mainx, F., Koske, T. & Smital, E. (1953). Untersuchungen über die chromosomall Struktur europäischer Vertreterder Drosophila obscura—Gruppe. Z. indukt. Abstamm.-u. VererbLehre, 85, 354–372.Google Scholar
Philip, U., Rendel, J. M., Spurway, H. & Haldane, J. B. S. (1944). Genetics and karyology of Drosophila subobscura. Nature, Lond., 154, 260CrossRefGoogle Scholar
Slizynski, B. M. (1952). Salivary gland preparations without any loss of material. Drosophila Inform. Serv. 26, 134.Google Scholar
Stumm-Zollinger, E. (1953). Vergleichende Untersuchungen über die Inversionshäufigkeit bei Drosophila subobscura in Populationen der Schweiz und Südwesteuropas. Z. indukt. Abstamm.- u. VererbLehre, 85, 382–407.Google Scholar
Stumm-Zollinger, E. & Goldschmidt, E. (1959). Geographical differentiation of inversion systems in Drosophila subobscura. Evolution, 13, 89–98.CrossRefGoogle Scholar