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Polymorphism and geographic variation of flower color in chilean populations ofEschscholzia californica
TLDR
Evidence is presented which suggests that this locus serves as a marker for adaptative gene complexes rather than being itself associated with adaptation, and suggests that extensive reorganization of the gene pool, through changed linkage relationships, took place as E. californica populations were being established in Chile.
Effects of Age and Experience on Mating Activity in the Sibling Species Drosophila pavani and Drosophila gaucha
TLDR
The effects of age and experience on sexual activity and on intra- and interspecific discrimination were studied in two sibling species of the mesophragmatica group, Drosophila pavani and Drosophile gaucha, which differ significantly in the duration of copula.
COURTSHIP AND SEXUAL ISOLATION IN DROSOPHILA PAVANI BRNCIC AND DROSOPHILA GAUCHA JAEGER AND SALZANO
Within populations of a species, reproductive isolating mechanisms, including sexual isolation, may arise and be favored by natural selection if the populations have diverged sufficiently to make
REPRODUCTIVE ISOLATION BETWEEN THE SIBLING SPECIES DROSOPHILA PAVANI AND DROSOPHILA GAUCHA
TLDR
Two sibling species belonging to the mesophragmatica group of species of the genus Drosophila, practically indistinguishable, although they differ in some minor details only seen under very close examination.
COURTSHIP INTERACTION IN THE SEMISPECIES OF DROSOPHILA PAULISTORUM
TLDR
Koref-Santibafiez (1972) showed that the strains of each species of the Drosophila paulistorum complex have a distinctive courtship pattern, due to quantitative variations in the use of the different courtship elements.
COURTSHIP BEHAVIOR IN THE SEMISPECIES OF THE SUPERSPECIES DROSOPHILA PAULISTORUM
TLDR
A study of the courtship behavior of the six semispecies of the Drosophila paulistorum complex was undertake in order to elucidate some of the mechanisms resulting in sexual isolation.
Mating Activity of Homo- and Heterokaryotypes in Drosophila Pavani.
TLDR
That some heterokaryotype in Drosophila populations are strongly homeostatic, and superior in Darwinian fitness to homokaryotypes, has been demonstrated in some instances.
Rate of development and inversion polymorphism in Drosophila pavani.
TLDR
After 15 years of cytogenetic studies, both in natural populations as well as in laboratory stocks of D. pauani, it has been possible to establish that there are no appreciable geographic, seasonal, altitudinal or other environmental fluctuations of the different chromosomal variants.
COURTSHIP AND SEXUAL ISOLATION IN FIVE SPECIES OF THE MESOPHRAGMATICA GROUP OF THE GENUS DROSOPHILA
TLDR
The mesophragmatica species group of the genus Drosophila contains seven described species, most of them inhabit the Andean mountain system, and an analysis of their metaphase chromosomes has allowed us to trace probable phylogenetic relationships.
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