AN EXPERIMENTAL-STUDY OF EVOLUTION IN PROGRESS - CLINES FOR QUANTITATIVE TRAITS IN COLONIZING AND PALEARCTIC POPULATIONS OF DROSOPHILA

被引：42

作者：

PEGUEROLES, G ^{[1
]}

PAPACEIT, M ^{[1
]}

QUINTANA, A ^{[1
]}

GUILLEN, A ^{[1
]}

PREVOSTI, A ^{[1
]}

SERRA, L ^{[1
]}

机构：

[1] UNIV BARCELONA, FAC BIOL, DEPT GENET, BARCELONA, SPAIN

来源：

EVOLUTIONARY ECOLOGY | 1995年 / 9卷 / 04期

关键词：

D-SUBOBSCURA; D-OBSCURA; QUANTITATIVE TRAITS; CLINES; COLONIZATION;

D O I：

10.1007/BF01237767

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Drosophila sobobscura has recently colonized the American continent and is an excellent model for studying evolution in action. Previous analyses have shown that these colonizing populations have significant latitudinal dines for the frequencies of some chromosomal arrangements that parallel those dines found in the Old World. These results strongly suggest that this polymorphism is adaptive. In the present study, significant latitudinal dines for continuous morphometric variables (flies are larger in the north) have been detected in Old World populations of D. subobscura. The adaptive nature of these dines is reinforced by the fact that parallel latitudinal dines for body size have also been detected in Drosophila obscura, a closely related sympatric species, as well as previously in other Drosophila. On the other hand, no significant latitudinal dines for continuous morphometric traits, not even when using an overall size index, have been detected in colonizing populations of D. subobscura. This is a rather surprising result given the number of generations that have elapsed since the species was detected in America and given that significant dines in chromosomal inversions are already established. Thus, the adaptive response of quantitative morphometric variables is not as rapid as that found for chromosomal inversions. Nevertheless, canonical correlation analysis suggests that significant latitudinal dines for body size might soon be detected in the American continent. The results obtained here are included in a projected time series with the aim of documenting size evolution in action.

引用

页码：453 / 465

页数：13

共 36 条

[1]

Anderson W.W., Genetic divergence in M. Vetukhiv's experimental populations in D.pseudoobscura 3. Divergence in body size, Genet. Res. Camb., 7, pp. 255-66, (1966)

[2]

Anderson W.W., Genetic divergence in body size among experimental populations of D. pseudobscura kept at different temperatures, Evolution, 27, pp. 278-84, (1973)

[3]

Ayala F.J., Serra L., Prevosti A., A grand experiment in evolution: the D. subobscura colonization of the Americas, Genome, 31, pp. 246-55, (1989)

[4]

Balanya J., Segarra C., Prevosti A., Serra L., Colonization of America by D. subobscura: the founder event and a rapid expansion, J. Heredity, 85, pp. 427-32, (1994)

[5]

Beckenbach A.T., Genetics of a colonizing species, D. ambigua, in North America, Genetics, 107, (1984)

[6]

Beckenbach A.T., Prevosti A., Colonization of North America by the European species D. subobscura and D.ambigua, Am. Midl. Nat., 115, pp. 10-18, (1986)

[7]

Brncic D., Prevosti A., Budnik M., Monclus M., Ocana J., Colonization of D. subobscura in Chile. I. First population and cytogenetic studies, Genetica, 56, pp. 3-9, (1981)

[8]

Burla H., Systematik, Verbreitung und Oekologie der Drosophila-Arten der Schweiz, Rev. Suisse de Zool., 58, (1951)

[9]

Buzzati-Traverso A., Scossiroli R.E., The ‘Obscura Group’ of the genus Drosophila, Adv. Genet., 7, pp. 47-92, (1955)

[10]

Cavicchi S., Guerra D., Giorgi G., Pezzoli C., Temperature-related divergence in experimental populations of D.melanogaster. I. Genetic and developmental basis of wing size and shape variation, Genetics, 109, pp. 665-89, (1985)

← 1 2 3 4 →