ALCOHOL DEHYDROGENASE AND GLYCEROL-3-PHOSPHATE DEHYDROGENASE CLINES IN<i>DROSOPHILA MELANOGASTER</i>ON DIFFERENT CONTINENTS

Oakeshott, J. G.; Gibson, J. B.; Anderson, P. R.; Knibb, Wayne; Anderson, D. G.; Chambers, Geoffrey K.

doi:10.1111/j.1558-5646.1982.tb05013.x

Cited by 241 publications

(81 citation statements)

References 34 publications

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“…This brings to five the number of enzyme polymorphisms in D. melanogaster for which largescale latitudinal dines have been found with similar directions in different zones (Oakeshott et al, 1981(Oakeshott et al, , 1982. However, compared to the patterns for Pgd and the other three loci (Adh, Gpdh and Est-6), the slopes of the G6pd dines are uniformly shallow and a much higher proportion of allele frequency variance among and within zones is unexplained by latitude.…”

Section: Discussiormentioning

confidence: 98%

“…Large-scale and complementary latitudinal dines have recently been found in Australasia, North America and Europe/Asia for allele frequencies at three out of four enzyme loci studied in Drosophila melanogaster (Adh, Gpdh and Est-6 but not Pgm; Oakeshott et a!., 1981Oakeshott et a!., , 1982. This paper tests for similar patterns for alleles of glucose-6-phosphate dehydrogenase (G6pd'' and G6pd5) and 6-phosphogluconate dehydrogenase (Pgd' and Pgd S) in this species.…”

Section: Introductionmentioning

confidence: 97%

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Geographic varation in G6pd and Pgd allele frequencies in Drosophila melanogaster

et al. 1983

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Section: Discussiormentioning

confidence: 98%

Section: Introductionmentioning

confidence: 97%

Geographic varation in G6pd and Pgd allele frequencies in Drosophila melanogaster

et al. 1983

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“…The observation of similar or parallel dines on different continents strongly suggests that they have adaptive significance (Oakeshott et a!., 1982;Anderson and Oakeshott, 1984;Endler, 1986) and are not the product of random colonization events.…”

Section: Introductionmentioning

confidence: 99%

“…For the Adh (alcohol dehydrogenase) locus in Drosophila melanogaster, the frequency of the F allele is known to increase with latitude in different parts of the world, such as North America (Johnson and Schaffer, 1973;Smith et al., 1984) and Australia and Asia (Oakeshott et al, 1982). More recently, a similar tendency was observed between tropical Africa, which harbours the ancestral populations of the species (Lachaise et al, 1988), and Europe, and also in the southern hemisphere between the Equator and southern Africa.…”

Section: Introductionmentioning

confidence: 99%

Latitudinal variation of Adh gene frequencies in Drosophila melanogaster: a Mediterranean instability

et al. 1989

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The relationship between allelic frequencies at the Adh locus and latitude of origin was studied using selected published data from various parts of the world and original observations. An overall increase of Adh-F with increasing latitude was observed but the relationship is not linear. Tropical populations are generally similar, having a low frequency of the F allele (average 15 per cent) and a smooth increase with latitude (one per cent for one degree). Between 30 and 42° latitude, populations living in a Mediterranean climate in various parts of the world (Mediterranean countries, Australia's east coast and North America's west coast) are also similar, with a much higher average frequency of F (70 per cent), a steeper slope (two per cent) and a broader range of variability for a given latitude. In a restricted area (near Cordoba in southern Spain) numerous wild collected samples also showed a large variability, sometimes over a very short distance. Allelic frequencies in Mediterranean countries are thus quite unstable and it is proposed that this phenomenon be called a "Mediterranean instability". Further north, numerous samples from France were characterized by an even higher frequency of F (95 per cent) and a greater homogeneity over a broad geographic area. These observations are discussed and the need for more field studies is emphasized.

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“…Clines that have evolved recurrently in geographically disparate areas of a species range can be viewed as multiple replicates of adaptive evolution (Oakeshott et al, 1982;Huey et al, 2000;Steiner et al, 2009). Comparisons of these independently evolved adaptive clines can help to overcome the difficulties associated with identifying the agents and targets of selection in a single cline.…”

Section: Introductionmentioning

confidence: 99%

Searching for the bull’s eye: agents and targets of selection vary among geographically disparate cyanogenesis clines in white clover (Trifolium repens L.)

Kooyers

Olsén

2013

Heredity

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Searching for the bull's eye: agents and targets of selection vary among geographically disparate cyanogenesis clines in white clover (Trifolium repens L.) NJ Kooyers 1 and KM OlsenThe recurrent evolution of adaptive clines within a species can be used to elucidate the selective factors and genetic responses that underlie adaptation. White clover is polymorphic for cyanogenesis (HCN release with tissue damage), and climateassociated cyanogenesis clines have evolved throughout the native and introduced species range. This polymorphism arises through two independently segregating Mendelian polymorphisms for the presence/absence of two required components: cyanogenic glucosides and their hydrolyzing enzyme linamarase. Cyanogenesis is commonly thought to function in herbivore defense; however, the individual cyanogenic components may also serve other physiological functions. To test whether cyanogenesis clines have evolved in response to the same selective pressures acting on the same genetic targets, we examined cyanogenesis cline shape and its environmental correlates in three world regions: southern New Zealand, the central United States and the US Pacific Northwest. For some regional comparisons, cline shapes are remarkably similar despite large differences in the spatial scales over which clines occur (40-1600 km). However, we also find evidence for major differences in both the agents and targets of selection among the sampled clines. Variation in cyanogenesis frequency is best predicted using a combination of minimum winter temperature and aridity variables. Together, our results provide evidence that recurrent adaptive clines do not necessarily reflect shared adaptive processes.

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ALCOHOL DEHYDROGENASE AND GLYCEROL-3-PHOSPHATE DEHYDROGENASE CLINES INDROSOPHILA MELANOGASTERON DIFFERENT CONTINENTS

Cited by 241 publications

References 34 publications

Geographic varation in G6pd and Pgd allele frequencies in Drosophila melanogaster

Geographic varation in G6pd and Pgd allele frequencies in Drosophila melanogaster

Latitudinal variation of Adh gene frequencies in Drosophila melanogaster: a Mediterranean instability

Searching for the bull’s eye: agents and targets of selection vary among geographically disparate cyanogenesis clines in white clover (Trifolium repens L.)

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