INVERSION POLYMORPHISM, LONGEVITY, AND BODY SIZE IN A NATURAL POPULATION OFDROSOPHILA BUZZATII
نویسندگان
چکیده
منابع مشابه
Heritability and selection on body size in a natural population of Drosophila buzzatii.
An attempt was made to assess whether the phenotypic differences in body size (as measured by wing length) between wild-caught mating and single Drosophila buzzatii males could be attributed to genetic differences between the samples. Mating males were found to be larger and less variable than a random sample of the population. The progeny of the mating males (produced by crossing to a random f...
متن کاملGenetic variance for body size in a natural population of Drosophila buzzatii.
Previous work has shown thorax length to be under directional selection in the Drosophila buzzatii population of Carboneras. In order to predict the genetic consequences of natural selection, genetic variation for this trait was investigated in two ways. First, narrow sense heritability was estimated in the laboratory F2 generation of a sample of wild flies by means of the offspring-parent regr...
متن کاملContrasting population genetic structures using allozymes and the inversion polymorphism in Drosophila buzzatii
The cactophilic Drosophila buzzatii (buzzatii complex ± repleta group, Ruiz & Wasserman, 1993) is native to South America and has attained a subcosmopolitan distribution by following passively its native host plants of the genus Opuntia. Studies in natural populations have shown that second chromosome polymorphic arrangements affect life history traits and morphometric traits associated with ®t...
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Drosophila buzzatii is confined to reproducing in a well defined patchy environment consisting of rotting cactus cladodes which are ephemeral, permitting at most three generations. Flies emerging from such rots were used to estimate the additive genetic variance within rots and the genetic variance between rots for body size and also were electrophoresed to determine their genotypes at six poly...
متن کاملTemporal and microgeographic variation in allozyme frequencies in a natural population of Drosophila buzzatii.
Temporal variation in allozyme frequencies at six loci was studied by making monthly collections over 4 yr in one population of the cactophilic species Drosophila buzzatii. Ten sites were defined within the study locality, and for all temporal samples, separate collections were made at each of these sites. Population structure over microgeographic space and changes in population structure over ...
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ژورنال
عنوان ژورنال: Evolution
سال: 1999
ISSN: 0014-3820
DOI: 10.1111/j.1558-5646.1999.tb03796.x