Sex-determinants and their distribution in various populations of Musca domestica L. of Western Europe
SUMMARYThe distribution of sex-determinants in field populations ofMusca domestica domesticaL. was studied in 62 samples of flies collected at 53 sites (animal farms) between 1975 and 1981 in an area stretching North–South from Denmark (+ Iceland) to Sicily.Karyological observations and genetic anal...
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ftopenaccessrep:oai:zenodo.org:90577 2023-10-25T01:39:50+02:00 Sex-determinants and their distribution in various populations of Musca domestica L. of Western Europe M. Vecchi P. G. Rubini M. G. Franco 1982-12-01 https://www.openaccessrepository.it/record/90577 https://doi.org/10.1017/s0016672300019157 eng eng url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/90577 doi:10.1017/s0016672300019157 info:eu-repo/semantics/openAccess Genetics General Medicine info:eu-repo/semantics/article publication-article 1982 ftopenaccessrep https://doi.org/10.1017/s0016672300019157 2023-09-26T22:17:13Z SUMMARYThe distribution of sex-determinants in field populations ofMusca domestica domesticaL. was studied in 62 samples of flies collected at 53 sites (animal farms) between 1975 and 1981 in an area stretching North–South from Denmark (+ Iceland) to Sicily.Karyological observations and genetic analyses demonstrated the existence of three types of population along a latitudinal cline. Populations of Northern Europe were of the standard type (XXfemales andXYmales) with theYchromosome determining sex. Those of Central and Southern Italy from sites below 100 m.a.s.l. (metres above sea level) were autosomal (XXfemales and males), sex in them being determined by autosomal sex-determinants for both femaleness and maleness. In the large intermediate zone the populations were mixed and had several karyotypes in both sexes. In this zone an altitudinal gradient was also observed, with autosomal determinants less common at higher altitudes. Genetic tests showed, in the autosomal and in the mixed populations, the presence of two autosomal male factors:MIII, the most common, on autosome III andMII, on autosome II.The gradient in sex determinants found in flies of Western Europe appears to be a dynamic phenomenon of relatively recent origin. Both climatic influence and selective pressure with insecticides have probably contributed towards the micro-evolution of populations with different sex-determinants in the houseflies of the area studied. Article in Journal/Newspaper Iceland Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository Genetical Research 40 3 279 293 |
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Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository |
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English |
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Genetics General Medicine |
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Genetics General Medicine M. Vecchi P. G. Rubini M. G. Franco Sex-determinants and their distribution in various populations of Musca domestica L. of Western Europe |
topic_facet |
Genetics General Medicine |
description |
SUMMARYThe distribution of sex-determinants in field populations ofMusca domestica domesticaL. was studied in 62 samples of flies collected at 53 sites (animal farms) between 1975 and 1981 in an area stretching North–South from Denmark (+ Iceland) to Sicily.Karyological observations and genetic analyses demonstrated the existence of three types of population along a latitudinal cline. Populations of Northern Europe were of the standard type (XXfemales andXYmales) with theYchromosome determining sex. Those of Central and Southern Italy from sites below 100 m.a.s.l. (metres above sea level) were autosomal (XXfemales and males), sex in them being determined by autosomal sex-determinants for both femaleness and maleness. In the large intermediate zone the populations were mixed and had several karyotypes in both sexes. In this zone an altitudinal gradient was also observed, with autosomal determinants less common at higher altitudes. Genetic tests showed, in the autosomal and in the mixed populations, the presence of two autosomal male factors:MIII, the most common, on autosome III andMII, on autosome II.The gradient in sex determinants found in flies of Western Europe appears to be a dynamic phenomenon of relatively recent origin. Both climatic influence and selective pressure with insecticides have probably contributed towards the micro-evolution of populations with different sex-determinants in the houseflies of the area studied. |
format |
Article in Journal/Newspaper |
author |
M. Vecchi P. G. Rubini M. G. Franco |
author_facet |
M. Vecchi P. G. Rubini M. G. Franco |
author_sort |
M. Vecchi |
title |
Sex-determinants and their distribution in various populations of Musca domestica L. of Western Europe |
title_short |
Sex-determinants and their distribution in various populations of Musca domestica L. of Western Europe |
title_full |
Sex-determinants and their distribution in various populations of Musca domestica L. of Western Europe |
title_fullStr |
Sex-determinants and their distribution in various populations of Musca domestica L. of Western Europe |
title_full_unstemmed |
Sex-determinants and their distribution in various populations of Musca domestica L. of Western Europe |
title_sort |
sex-determinants and their distribution in various populations of musca domestica l. of western europe |
publishDate |
1982 |
url |
https://www.openaccessrepository.it/record/90577 https://doi.org/10.1017/s0016672300019157 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/90577 doi:10.1017/s0016672300019157 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/s0016672300019157 |
container_title |
Genetical Research |
container_volume |
40 |
container_issue |
3 |
container_start_page |
279 |
op_container_end_page |
293 |
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1780735385603670016 |