Morphological variation in a natural population of Drosophila mediopunctata: altitudinal cline, temporal changes and influence of chromosome inversions.
| Title: | Morphological variation in a natural population of Drosophila mediopunctata: altitudinal cline, temporal changes and influence of chromosome inversions. |
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| Authors: | Bitner-Mathé BC; Departamento de Genética, Universidade Federal do Rio de Janeiro, Brazil.; Peixoto AA; Klaczko LB |
| Source: | Heredity [Heredity (Edinb)] 1995 Jul; Vol. 75 ( Pt 1), pp. 54-61. |
| Publication Type: | Journal Article; Research Support, Non-U.S. Gov't |
| Language: | English |
| Journal Info: | Publisher: Nature Publishing Group Country of Publication: England NLM ID: 0373007 Publication Model: Print Cited Medium: Print ISSN: 0018-067X (Print) Linking ISSN: 0018067X NLM ISO Abbreviation: Heredity (Edinb) Subsets: MEDLINE |
| Imprint Name(s): | Publication: : London : Nature Publishing Group; Original Publication: London, Oliver and Boyd. |
| MeSH Terms: | Altitude* ; Chromosome Inversion* ; Genetic Variation*; Drosophila/*anatomy & histology; Drosophila/genetics ; Drosophila/physiology ; Wings, Animal/physiology ; Animals ; Body Constitution ; Female ; Male ; Population Dynamics ; X Chromosome |
| Abstract: | To characterize the morphological variation in a natural population of Drosophila mediopunctata, males were collected on three occasions at a single locality. From each wild-caught male 14 body measures were taken and the karyotype for inversions on chromosomes X and II was determined. Through a principal components analysis, two sources of variation, identified as size and shape, accounted for approximately 80 and 6 per cent of the total morphological variability, respectively. The shape component was determined primarily by variations in the position of the wing second longitudinal vein. Differences between collections were detected both for size and shape. An altitudinal cline was observed in respect of wing shape, although altitude explained only a small part of the shape variation. Size and shape were affected by chromosome II inversions. However, in respect of size, no direct differences were detected between karyotypes but a significant interaction between collecting date and karyotype was found. This suggests that karyotypes might differ in their norms of reaction in the field. |
| Entry Date(s): | Date Created: 19950701 Date Completed: 19950927 Latest Revision: 20190515 |
| Update Code: | 20260130 |
| DOI: | 10.1038/hdy.1995.103 |
| PMID: | 7649756 |
| Database: | MEDLINE |
Journal Article; Research Support, Non-U.S. Gov't