Abstract
In order to study isolation within the salians subgroup, pair mating crosses involving its 7 species were performed. The results of testing different interspecific combinations varied from complete isolation at the insemination level to the production of fertile hybrids. Some isolation indices are proposed: Ii (isolation index at the insemination level), Fi (isolation index at the fertilization level), Ti (total isolation index), and Ai (average isolation index). A schema of the biological relationships on the basis of the isolation degree is also presented for the 7 species of the subgroup.
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References
Dobzhansky, Th. (1940). Speciation as a stage in evolutionary divergence. Am. Nat. 74: 312–321.
Dobzhansky, Th. (1944). Experiments on sexual isolation in Drosophila. III. Geographic strains of Drosophila sturtevanti. Proc. natn. Acad. Sci. U.S.A. 30: 335–339.
Dorzhansky, Th. & G. Streisinger (1944). Experiments on sexual isolation in Drosophila. II. Geographic strains of Drosophila prosallans. Proc. natn. Acad. Sci. U.S.A. 30: 340–345.
Dobzhansky, Th., L. Ehrman, O. Pavlovsky & B. Spassky (1964). The superspecies Drosophila paulistorum, Proc. natn. Acad. Sci. U.S.A. 51: 3–9.
Futch, D. G. (1962). Hybridization tests within the cardini species group of the genus Drosophila. Univ. Texas Publs 6205: 539–554.
Grant, V. (1966). The selective origin of incompatibility barriers in the plant genus Gilia. Am. Nat. 100: 99–118.
Hoenigsberg, H. F.vol & K. Santibañes (1960). Intraspecific sensory discrimination in Drosophila aequinoctialis Dobzhansky and Drosophila prosaltans Duda. Z. Tierpsychol. 17: 133–140.
Magalhães, L. E. & A. J. S. Björnberg (1957). Estudos da genitalia masculina de Drosophila do grupo saltans (Diptera). Resta bras. Biol. 17: 435–450.
Magalhães, L. E. (1962). Notes on the taxonomy, morphology and distribution of the saltans group of Drosophila, with descriptions of four new species. Univ. Texas Publs 6205: 135–154.
Mather, W. B. (1963). Speciation in Drosophila rubida. Evolution 18: 10–11.
Mayr, E. & Th. Dobzhansky (1945). Experiments on sexual isolation in Drosophila. IV. Modification of the degree of isolation between Drosophila pseudoobscura and Drosophila persimilis and the sexual preference in Drosophila prosaltans. Proc. natn. Acad. Sci. U.S.A. 31: 75–82.
Mayr, E. (1963). Animal species and Evolution. Harvard University Press, Cambridge, Massachusets.
Mourão, C. A. & H. E. M. C. Bicudo (1967). Duas novas espécies de Drosophila do grupo saltans (Drosophilidae, Diptera). Papéis Dep. Zool. S Paulo 20: 123–134.
Muller, H. J. (1942). Isolating mechanism, evolution and temperature. Biol. Symp. 6: 71–125.
Nicoletti, B. (1959). An efficient method for salivary gland chromosome preparations. D.I.S. 33: 181–182.
Patterson, J. T. (1946). A new type of isolating mechanism in Drosophila. Proc. natn. Acad. Sci. U.S.A. 32: 202–208.
Patterson, J. T. (1952). The genetic relationships of Drosophila littoralis Meigen to the other members of the virilis group. Univ. Texas Publs 5204: 7–19.
Patterson, J. T. (1954). Fate of the sperm in the reproductive tract of the Drosophila female in homogamic matings. Univ. Texas Publs 5422: 19–37.
Smith, S. G. (1959). The cytogenetic basis of speciation in Coleoptera. Proc. Ioth Int. Congr. Genet. 1: 444–450.
Spassky, B. (1957). Morphological differences between sibling species of Drosophila. Univ. Texas Publs 5721: 48–61.
Wharton, L. T. (1944). Interspecific hybridization in the repleta group. Univ. Texas Publs 4445: 175–193.
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Part of this study was included in the thesis submitted for the PH.D. degree at the University of São Paulo and was performed during the tenure of a fellowship supported by the Fundação de Amparo à Pesquisa do Estado de São Paulo.
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de Campos Bicudo, H.E.M. Reproductive isolation in the saltans group of Drosophila. I. The saltans subgroup. Genetica 44, 313–329 (1973). https://doi.org/10.1007/BF00161311
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DOI: https://doi.org/10.1007/BF00161311