A biochemical study of the scarlet eye-color mutant of Drosophila melanogaster

1975 ◽  
Vol 13 (3-4) ◽  
pp. 273-282 ◽  
Author(s):  
A. J. Howells ◽  
Rosemary L. Ryall
Keyword(s):  
Drosophila Melanogaster ◽  
Biochemical Study ◽  
Eye Color ◽  
Color Mutant

Über das Auftreten von Tetrahydrobiopterin und Riboflavin in den Malpighischen Gefäßen von Drosophila melanogaster und deren Mutante brown

1969 ◽  
Vol 24 (1) ◽  
pp. 123-127
Author(s):  
Dieter Eichelberg
Keyword(s):  
Drosophila Melanogaster ◽  
Uric Acid ◽  
Malpighian Tubules ◽  
Wild Type ◽  
Strong Reduction ◽  
Stages Of Development ◽  
Eye Color ◽  
Color Mutant

This paper is concerned with the different occurrence of tetrahydrobiopterin (THB) and riboflavine in the Malpighian tubules (MT) of the wild-type and of the eye color mutant brown (bw) of Drosophila melanogaster during different stages of development and life. In the MT of the mutant brown there is a strong reduction of THB and riboflavine contents in proportion to the amounts of the MT of the wild-type. Furthermore, in the mutant brown the THB, similar like isoxanthopterin and uric acid, disappears out of the MT soon after hatching. The results are discussed with regard to biogenetic coherences.

Whole-Genome Effects of Ethyl Methanesulfonate-Induced Mutation on Nine Quantitative Traits in Outbred Drosophila melanogaster

Genetics ◽  
2001 ◽  
Vol 157 (3) ◽  
pp. 1257-1265 ◽  
Author(s):  
Hsiao-Pei Yang ◽  
Ana Y Tanikawa ◽  
Wayne A Van Voorhies ◽  
Joana C Silva ◽  
Alexey S Kondrashov
Keyword(s):  
Drosophila Melanogaster ◽  
Quantitative Traits ◽  
Spontaneous Mutation ◽  
Developmental Time ◽  
Ethyl Methanesulfonate ◽  
Induced Mutations ◽  
Mean Values ◽  
Eye Color ◽  
Recessive Mutations ◽  
The Mean

Abstract We induced mutations in Drosophila melanogaster males by treating them with 21.2 mm ethyl methanesulfonate (EMS). Nine quantitative traits (developmental time, viability, fecundity, longevity, metabolic rate, motility, body weight, and abdominal and sternopleural bristle numbers) were measured in outbred heterozygous F3 (viability) or F2 (all other traits) offspring from the treated males. The mean values of the first four traits, which are all directly related to the life history, were substantially affected by EMS mutagenesis: the developmental time increased while viability, fecundity, and longevity declined. In contrast, the mean values of the other five traits were not significantly affected. Rates of recessive X-linked lethals and of recessive mutations at several loci affecting eye color imply that our EMS treatment was equivalent to ∼100 generations of spontaneous mutation. If so, our data imply that one generation of spontaneous mutation increases the developmental time by 0.09% at 20° and by 0.04% at 25°, and reduces viability under harsh conditions, fecundity, and longevity by 1.35, 0.21, and 0.08%, respectively. Comparison of flies with none, one, and two grandfathers (or greatgrandfathers, in the case of viability) treated with EMS did not reveal any significant epistasis among the induced mutations.

Die fluoreszierenden Stoffe aus den Malpighischen-Gefäßen der Wildform und verschiedener Augenfarbenmutanten von Drosophila melanogaster

1968 ◽  
Vol 23 (3) ◽  
pp. 376-386 ◽  
Author(s):  
Armin Wessing ◽  
Dieter Eichelberg
Keyword(s):  
Drosophila Melanogaster ◽  
Malpighian Tubules ◽  
Wild Type ◽  
Eye Color ◽  
Eye Color Mutants

The Malpighian tubules of Drosophila melanogaster accumulate a great number of substances, many of which fluoresce. This paper is concerned with the identification of these substances by chromatography and their location by fluorescentmicroscopy (fig. 4, 5). It appears that they mainly belong to the following three groups: Pteridines, tryptophane and some of its metabolites, and riboflavine (tab. 1).The pattern of fluorescent substances of the eye color mutants cn, v, se, st, bw, ry, and w vary significantly. The patterns of these mutants are compared and discussed with that of the wild-type.

scholarly journals Genetic analysis of the claret locus of Drosophila melanogaster.

Genetics ◽  
1989 ◽  
Vol 123 (3) ◽  
pp. 511-524 ◽  
Author(s):  
W Sequeira ◽  
C R Nelson ◽  
P Szauter
Keyword(s):  
Drosophila Melanogaster ◽  
Single Gene ◽  
Chromosome Rearrangement ◽  
Overlapping Genes ◽  
Early Cleavage ◽  
Chromosome Behavior ◽  
Eye Color ◽  
Single Target ◽  
Radiation Induced ◽  
New Alleles

Abstract The claret (ca) locus of Drosophila melanogaster comprises two separately mutable domains, one responsible for eye color and one responsible for proper disjunction of chromosomes in meiosis and early cleavage divisions. Previously isolated alleles are of three types: (1) alleles of the claret (ca) type that affect eye color only, (2) alleles of the claret-nondisjunctional (cand) type that affect eye color and chromosome behavior, and (3) a meiotic mutation, non-claret disjunctional (ncd), that affects chromosome behavior only. In order to investigate the genetic structure of the claret locus, we have isolated 19 radiation-induced alleles of claret on the basis of the eye color phenotype. Two of these 19 new alleles are of the cand type, while 17 are of the ca type, demonstrating that the two domains do not often act as a single target for mutagenesis. This suggests that the two separately mutable functions are likely to be encoded by separate or overlapping genes rather than by a single gene. One of the new alleles of the cand type is a chromosome rearrangement with a breakpoint at the position of the claret locus. If this breakpoint is the cause of the mutant phenotype and there are no other mutations associated with the rearrangement, the two functions must be encoded by overlapping genes.

scholarly journals Longevity of africanized worker honey bees (Apis mellifera) carrying eye color mutant alleles

2003 ◽  
Vol 60 (2) ◽  
pp. 277-281 ◽  
Author(s):  
Rosana de Almeida ◽  
Ademilson Espencer Egea Soares
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Statistical Difference ◽  
Close Association ◽  
Control Group ◽  
Brown Pigment ◽  
Eye Color ◽  
Color Mutant ◽  
Extended Lifespan ◽  
Eye Pigmentation

The dark coloration of insects eyes is attributed to the accumulation of the brown pigment insectorubin, a mixture of ommochromes, xanthommatin and several ommins, biosynthesized from tryptophan. When any of the events in the synthesis chain is interrupted, formation and accumulation of pigments other than insectorubin occurs, and a new eye color will appear. The aim of the present work is to evaluate the longevity of worker honey bees Apis mellifera, homozygous and heterozygous for the mutant alleles cream (cr), snow-laranja (s la) and brick (bk). Eye pigmentation and average longetivity of bees are very closely related. Mutant bees carrying lighter eye pigmentation are unable to return to the hive; there is, therefore, a close association between the eye pigmentation and honey bees lifespan. Experiments ran in confinement cages confirm the orientation problems of mutant honey bees, which kept in a limited space, were able to return to the hive and had an extended lifespan in comparison to that observed in the nature, and did not present statistical difference (P>0.05) relative to the control group. Confinement to restricted areas improves honey bees orientation abilities and facilitates return to the hive.

Eye Pigments in Wild-Type and Eye-Color Mutant Strains of the African Malaria Vector Anopheles gambiae

1995 ◽  
Vol 86 (5) ◽  
pp. 375-380 ◽  
Author(s):  
C. B. Beard ◽  
M. Q. Benedict ◽  
J. P. Primus ◽  
V. Finnerty ◽  
F. H. Collins
Keyword(s):  
Anopheles Gambiae ◽  
Malaria Vector ◽  
Wild Type ◽  
Eye Color ◽  
Color Mutant ◽  
Mutant Strains

Yellow Eye Color Mutant in Trichoplusia ni (Lepidoptera: Noctuidae)

1999 ◽  
Vol 92 (3) ◽  
pp. 447-450 ◽  
Author(s):  
C. Lydia Wraight ◽  
Ellen S. Green ◽  
May R. Berenbaum
Keyword(s):  
Trichoplusia Ni ◽  
Eye Color ◽  
Color Mutant ◽  
Lepidoptera Noctuidae
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