The Genetics of Megaselia scalaris Loew (Phoridae): A New Type of Sex Determination in Diptera

Mainx, Felix

doi:10.1086/282336

Cited by 68 publications

(38 citation statements)

References 11 publications

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“…Normally, the sex of an individual fly is determined by the presence or absence of the Y chromosome on which a male-determining factor (M) is located, whereas the X chromosome plays no major role in sex determination (Hiroyoshi 1964;Rubini and Palenzona 1967). As have been observed for several dipteran species including Megaselia scalaris (Tokunaga 1955;Mainx 1964), Culex tritaeniorhynchus (Baker and Sakai 1976), Chironomus tentans (Beerman 1955), Ch. nuditarsis and Ch.…”

Section: Introductionsupporting

confidence: 55%

“…It remains to be determined, however, whether the many independently derived AM factors belonging to the same linkage group of the housefly are all located at the same locus or whether they occupy different loci as observed in M. scalaris (Mainx 1964). One approach which has been used to map AM factors is based on the rare occurrence of recombination in the XX males heterozygous for the AM chromosome and an appropriate marker chromosome (Hiroyoshi and Fukumori 1976;Inoue and Hiroyoshi 1982;Hiroyoshi, Fukumori and Inoue 1982).…”

Section: Introductionmentioning

confidence: 99%

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Mapping of autosomal male-determining factors of the housefly, Musca domestica L., by means of sex-reversal.

Inoue

Fukumori

Hiroyoshi

1983

The Japanese journal of genetics

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A female determining factor (F), epistatic to M factors, was used to map autosomal male determining factors (AM) of the housefly. On the basis of meiotic recombination frequency occurring in the sex-reversed females caused by F, three IM factors and two IIIM factors of different geographic origins were mapped in the close vicinity of the by and the pw locus, respectively. These results suggest that AM factors occupy a definite site on the respective chromosomes. As measured along the IM and the IIIM chromosomes, the distribution of recombination in the sex-reversed females was strikingly different from that observed in the male. It is proposed that AM factors are located in the centric heterochromatin.

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Section: Introductionsupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Mapping of autosomal male-determining factors of the housefly, Musca domestica L., by means of sex-reversal.

Inoue

Fukumori

Hiroyoshi

1983

The Japanese journal of genetics

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“…A unique kind of sex determining mechanism is known in two other families of Diptera, the Phoridae (Mainx, 1964) and the C/zironomidae (Beerman, 1955, discussed in Mainx, 1964. A single gene, M, determines maleness and varies in its position in the genome of males.…”

Section: Comparing the Models To Natural Populations (I) The Levels Omentioning

confidence: 99%

Changes in the heterogametic mechanism of sex determination

1977

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SUMMARYThis paper attempts to explain how the different hetcrogametic mechanisms of sex determination, such as male and female heterogamety, can arise from a single ancestor. We study this problem by first building and analysing some models and then comparing the models to relevant data from animals. Based on these comparisons, the models appear to be useful for understanding how sex determining mechanisms evolve. Some results of the models include:(1) A mutant sex determiner invading a population of male or female heterogamety creates the potential for the evolution of a new heterogametic sex determining mechanism.(2) Certain mutants will lead to a new system of male heterogamety whereas others will lead to a new system of female heterogamety.(3) These changes take place through an intermediate population charactensed by multigenic sex determination. In some cases the multigenic mechanism is stable and will not revert to male or female heterogamety. The success of the invading mutant depends upon both (i) the relative viabilities of the different genotypes, and (ii) the segregation ratio of the X and Y in males; the population primary sex ratio is otherwise maintained at 1/2. (4) The models show how the different systems of genie balance arise and how sex determiners can become inherited autosomally.

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“…This phenomenon, referred to as M-f actor polymorphism, has also been reported in several other dipteran species, including Megaselia scalaris (Tokunaga 1955;Mainx 1964), Culex tritaeniorhynchus (Baker and Sakai 1976), Chironomus tentans (Beerman 1955), Ch. nuditarsus, Ch.…”

Section: Introductionmentioning

confidence: 53%

Location of fourth chromosomal male-determining factors of the housefly, Musca domestica.

Inoue

Tomita

Hiroyoshi

1986

The Japanese journal of genetics

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Two novel fourth chromosomal male-determining factors, IVM, of the housefly were mapped using a modification of the general mapping procedure for autosomal male-determining factors, AM (Inoue and Hiroyoshi 1984). On the basis of meiotic female recombination frequencies, the same gene order Barl-ye-M was demonstrated for the two IVM chromosomes. On both chromosomes, male recombination took place although at exceedingly low frequencies. From a comparison between the female and the male recombination maps, it appears that, unlike other AM factors examined so far, the two IVM factors are not located near the centromere.

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The Genetics of Megaselia scalaris Loew (Phoridae): A New Type of Sex Determination in Diptera

Cited by 68 publications

References 11 publications

Mapping of autosomal male-determining factors of the housefly, Musca domestica L., by means of sex-reversal.

Mapping of autosomal male-determining factors of the housefly, Musca domestica L., by means of sex-reversal.

Changes in the heterogametic mechanism of sex determination

Location of fourth chromosomal male-determining factors of the housefly, Musca domestica.

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