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  • Articles  (7)
  • Drosophila melanogaster
  • Springer  (7)
  • Periodicals Archive Online (PAO)
  • 1975-1979  (7)
  • 1975  (7)
Collection
  • Articles  (7)
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  • Springer  (7)
  • Periodicals Archive Online (PAO)
Years
  • 1975-1979  (7)
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  • 1
    Electronic Resource
    Electronic Resource
    Nutritional control of xanthine dehydrogenase. II. Effects on xanthine dehydrogenase and aldehyde oxidase of culturing wild-type and mutant Drosophila on different levels of molybdenum (1975)
    Springer
    Biochemical genetics 13 (1975), S. 53-64 
    Details
    ISSN: 1573-4927
    Keywords: aldehyde oxidase ; xanthine dehydrogenase ; Drosophila melanogaster ; molybdenum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Two new mutants, deficient in aldehyde oxidase and xanthine dehydrogenase, have been isolated from a wild-type stock of Drosophila melanogaster and have been provisionally termed lxd c and lxd d, respectively, as both mutants appear to be allelic with lxd (low xanthine dehydrogenase). An analysis has been made of the effects of dietary molybdenum on lxd, lxd c, lxdd, lao (low aldehyde oxidase), mal (maroon-like eye color), and pac (Pacific) wild-type flies. On the lower dietary levels of 10 −3 M and 10 −2 M molybdenum, increases in specific activity of both enzymes were observed only in lxd. Furthermore, two- to three-fold increases in specific activity of both enzymes occurred in all strains, except mal, when cultured on 5×10 −2 M molybdenum. The lxd and lxd c strains failed to survive on this high concentration of the ion. Similar concentrations of molybdenum had no effect in vitro. An extra electrophoretic band of xanthine dehydrogenase was observed on polyacrylamide gel from extracts of wild-type flies cultured on certain levels of molybdenum, but its appearance was not always correlated with the increases in specific activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00486006
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  • 2
    Electronic Resource
    Electronic Resource
    Transport defects as the physiological basis for eye color mutants of Drosophila melanogaster (1975)
    Springer
    Biochemical genetics 13 (1975), S. 603-613 
    Details
    ISSN: 1573-4927
    Keywords: transport mutants ; eye color mutants ; kynurenine ; Drosophila melanogaster ; Malpighian tubules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Kynurenine-H 3 transport and conversion to 3-hydroxykynurenine were studied in organ culture using the Malpighian tubules and developing eyes from wild type and the eye color mutants w, st, 1td, ca, and cn of Drosophila melanogaster. Malpighian tubules from wild type have the ability to concentrate kynurenine and convert it to 3-hydroxykynurenine. The tubules from w, st, 1td, and ca are deficient in the ability to transport kynurenine, as are the eyes of the mutants w, st, and 1td. This defect in kynurenine transport provides a physiological explanation for the phenotypic properties of the mutants. The relationship of these measurements to previous observations on these eye color mutants is discussed and the transport defect hypothesis is consistently supported. We have concluded that several of the eye color mutants in Drosophila are transport mutants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00484918
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  • 3
    Electronic Resource
    Electronic Resource
    Variants of α-glycerophosphate dehydrogenase in diploids and triploids of Drosophila melanogaster (1975)
    Springer
    Biochemical genetics 13 (1975), S. 263-271 
    Details
    ISSN: 1573-4927
    Keywords: allozymes ; α-glycerophosphate dehydrogenase ; Drosophila melanogaster
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract On the basis of band staining intensities in electrophoretic runs of single flies homozygous and heterozygous for two alleles at the autosomal locus for GPDH, F allele activity is believed to be 8% lower than S allele activity. Indeed, the intensity distribution in the patterns of FSS and FFS triploid females shows that both are not equally expressed. On a per fly or live weight basis, females with two and three doses of the Gpdh gene show bands with equal staining intensity, thus exhibiting a dosage effect when GPDH activity is estimated on a per cell basis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00486021
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  • 4
    Electronic Resource
    Electronic Resource
    Variation between electrophoretically identical alleles at the alcohol dehydrogenase locus in Drosophila melanogaster (1975)
    Springer
    Biochemical genetics 13 (1975), S. 721-731 
    Details
    ISSN: 1573-4927
    Keywords: Drosophila melanogaster ; enzyme variation ; alcohol dehydrogenase ; electrophoretically identical alleles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A new variant of alcohol dehydrogenase (ADH 71k) was found in a laboratory stock of Drosophila melanogaster. ADH in this stock had the same electrophoretic mobility as the F variant both on acrylamide and on agar. Activity levels were similar to the levels in F flies at temperatures between 15 and 25 C. But while ADH F enzyme is inactivated rapidly at 40 C, ADH 71k is still active. Also, ADH S is not inactivated at this temperature, but has a far lower activity per fly than ADH 71k. Genetic analysis showed that the new variant is an allele of the Adh locus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00484929
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  • 5
    Electronic Resource
    Electronic Resource
    Courtship song and mating speed in hybrids betweenDrosophila melanogaster andDrosophila simulans (1975)
    Springer
    Behavior genetics 5 (1975), S. 395-404 
    Details
    ISSN: 1573-3297
    Keywords: Drosophila melanogaster ; Drosophila simulans ; hybrids ; sexual behavior
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Courtship song and mating speed of hybrids betweenDrosophila melanogaster andD. simulans were investigated. The courtship song of hybrid males is identical to that ofD. simulans, suggesting that X chromosome determination, known from the cross betweenD. pseudoobscura andD. persimilis, is also possible here. Wingbeat frequency of hybrids is intermediate between that of the two parents, demonstrating that courtship song and wingbeat frequency are inherited independently of each other. In mating tests, hybrid males court and are accepted byD. simulans females more than hybrid females (presumably because their song is more “acceptable” to the former).D. melanogaster females reject hybrid males. Hybrid females acceptD. melanogaster males readily, hybrids less readily, andD. simulans least.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01073208
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  • 6
    Electronic Resource
    Electronic Resource
    Pattern of spatial distribution inDrosophila melanogaster (1975)
    Springer
    Behavior genetics 5 (1975), S. 9-16 
    Details
    ISSN: 1573-3297
    Keywords: Drosophila melanogaster ; temperature ; spatial distribution ; geotaxis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract The effect of temperature and sex on spatial distribution ofDrosophila melanogaster adults was studied in a specially designed apparatus. It was observed that individuals tend to aggregate in sections of the sphere independently of sex and temperature. Nevertheless, decrease in temperature increase aggregation. The mobility of both males and females indicates a megative geotactic tendency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01067577
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  • 7
    Electronic Resource
    Electronic Resource
    Phototactic responses along a gradient of light intensities for the sibling speciesDrosophila melanogaster andDrosophila simulans (1975)
    Springer
    Behavior genetics 5 (1975), S. 17-25 
    Details
    ISSN: 1573-3297
    Keywords: phototaxis ; Drosophila melanogaster ; Drosophila simulans ; genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract The phototactic responses of four recently collected isofemale strains ofDrosophila melanogaster andDrosophila simulans were measured in a light gradient from 590 to 10 lux. High light intensities were preferred by most flies, but a small proportion of flies preferred the lowest light intensity. Based on the strains tested,D. simulans showed greater phototaxis thanD. melanogaster, and within each species variability was found. The niche breadth ofD. melanogaster appears likely to be greater than that ofD. simulans for phototaxis in the light gradient. These results are in general qualitative agreement with earlier results published on dispersal activities from the same populations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01067578
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