Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/82223
Type: Artigo de periódico
Title: MORPHOLOGICAL VARIATION IN A NATURAL-POPULATION OF DROSOPHILA-MEDIOPUNCTATA - ALTITUDINAL CLINE, TEMPORAL CHANGES AND INFLUENCE OF CHROMOSOME INVERSIONS
Author: BITNERMATHE, BC
PEIXOTO, AA
KLACZKO, LB
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 dine 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.
Subject: CHROMOSOME INVERSIONS
CLINES
DROSOPHILA MEDIOPUNCTATA
MORPHOMETRY
PRINCIPAL COMPONENTS
REACTION NORM
WING MORPHOLOGY
Country: Inglaterra
Editor: Nature Publishing Group
Rights: fechado
Identifier DOI: 10.1038/hdy.1995.103
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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