Sexual behaviour of a female sterile mutant of Drosophila melanogaster

1976 ◽  
Vol 22 (12) ◽  
pp. 1727-1735 ◽  
Author(s):  
Robert Cook ◽  
Kevin Connolly
Keyword(s):  
Drosophila Melanogaster ◽  
Sexual Behaviour ◽  
Sterile Mutant

scholarly journals Female sterile (1) yolkless: a recessive female sterile mutation in Drosophila melanogaster with depressed numbers of coated pits and coated vesicles within the developing oocytes.

1987 ◽  
Vol 105 (1) ◽  
pp. 199-206 ◽  
Author(s):  
P J DiMario ◽  
A P Mahowald
Keyword(s):  
Drosophila Melanogaster ◽  
Gene Activity ◽  
Coated Vesicles ◽  
Coated Vesicle ◽  
Vesicle Formation ◽  
Class Analysis ◽  
Wild Type ◽  
Coated Pits ◽  
Protein Precursor ◽  
Sterile Mutant

Ultrastructural analysis of developing oocytes produced by the recessive female sterile mutant, yolkless (yl), in Drosophila melanogaster shows that yl+ gene activity is necessary for coated pit and coated vesicle formation within these oocytes. 29 alleles of the mutation are known to exist, and they fall either within a strongly affected class or a weakly affected class. Analysis of oocytes produced by females homozygous for the strongly affected class of alleles shows a greater than 90% reduction in the numbers of coated pits and coated vesicles. These oocytes have very little proteinaceous yolk, and the females accumulate vitellogenin (the yolk protein precursor) within their hemolymph. Moreover, females homozygous or hemizygous for a given strong allele produce mature oocytes that are flaccid. Alternatively, females homozygous or hemizygous for weak alleles produce yolk-filled oocytes, but the number of coated pits and coated vesicles within these oocytes is 50% of that found in the oocytes of wild-type females. Despite the presence of yolk within these oocytes, females homozygous for weak yl- alleles remain sterile, and their mature oviposited eggs collapse with time.

scholarly journals Influence of Ocular Morphology on Mating Speed and Duration of Copulation in Drosophila Melanogaster

1987 ◽  
Vol 40 (3) ◽  
pp. 271 ◽  
Author(s):  
Concepción de Juana ◽  
M Dolores Ochando
Keyword(s):  
Drosophila Melanogaster ◽  
Sexual Behaviour ◽  
Sensory Organs ◽  
Mating Speed ◽  
Duration Of Copulation ◽  
Two Parameters

The possible effects on the sexual behaviour of D. melanogaster of mutants in which sensory organs needed for mating are affected were studied. Four ocular mutants were used and two parameters of sexual behaviour were measured: mating speed and duration of copulation. A clear influence of the mutants was observed on mating speed but not on duration of copulation. The influence on mating speed was greater for the mutants with more severe morphological phenotypes.

In vivo uptake of haemolymph from a female sterile mutant into wild-type ovaries of Drosophila melanogaster

1986 ◽  
Vol 32 (1) ◽  
pp. 59-69 ◽  
Author(s):  
Franco Giorgi ◽  
Paola Andolfi ◽  
Isabella Spinetti ◽  
Massimo Masetti ◽  
John Postlethwait
Keyword(s):  
Drosophila Melanogaster ◽  
Wild Type ◽  
Sterile Mutant ◽  
In Vivo Uptake

Studies on the female-sterile mutant rudimentary of Drosophila melanogaster,

1976 ◽  
Vol 51 (2) ◽  
pp. 269-281 ◽  
Author(s):  
Anne Fausto-Sterling ◽  
Lily Hsieh
Keyword(s):  
Drosophila Melanogaster ◽  
Sterile Mutant

scholarly journals GENETICS OF PARTHENOGENESIS IN DROSOPHILA MELANOGASTER. I. THE MODES OF DIPLOIDIZATION IN THE GYNOGENESIS INDUCED BY A MALE-STERILE MUTANT, ms(3)K81

Genetics ◽  
1986 ◽  
Vol 112 (2) ◽  
pp. 237-248
Author(s):  
Yoshiaki Fuyama
Keyword(s):  
Drosophila Melanogaster ◽  
Male Sterile ◽  
Meiotic Mutants ◽  
Central Fusion ◽  
Meiotic Nondisjunction ◽  
Sterile Mutant ◽  
Cleavage Nucleus ◽  
Haploid Embryos

ABSTRACT Sperm that are produced by males homozygous for ms(3)K81, a male sterile mutant of Drosophila melanogaster, are defective in syngamy but are capable of activating eggs to develop gynogenetically. The activated eggs usually produce haploid embryos, but a small fraction (10-4-10-5) of them give rise to diploid impaternate adults. To know the cytological mechanisms by which these impaternates restore diploidy, the genotypes of impaternate progeny obtained from females doubly heterozygous for visible markers were examined. The results show that, as generally found among parthenogenetic Drosophila, diploidy is restored after completing meiosis either by pronuclear fusion or by gamete duplication (doubling of a haploid cleavage nucleus). The fusion of two nonsister nuclei following meiosis II (central fusion) was indicated to be a predominant mode of diploidization in this species. Two meiotic mutants, mei-9 and mei-S332, which are known to greatly increase meiotic nondisjunction, did not cause an increased incidence of impaternates. This seems to exclude the possibility that some impaternates might have been derived from diploid egg nuclei produced through nondisjunction.

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