Chromosome Comparisons of Australian <em>Scaptodrosophila</em> Species
The <i>Scaptodrosophila</i> represent a diverse group of <i>Diptera</i> closely related to <i>Drosophila.</i> Although they have radiated extensively in Australia, they have been the focus of few studies. Here, we characterized the karyotypes of 12 <i>Scapto...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/13/4/364 |
| _version_ | 1797445718826287104 |
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| author | Ann Jacob Stocker Michele Schiffer Eduardo Gorab Ary Hoffmann |
| author_facet | Ann Jacob Stocker Michele Schiffer Eduardo Gorab Ary Hoffmann |
| author_sort | Ann Jacob Stocker |
| collection | DOAJ |
| description | The <i>Scaptodrosophila</i> represent a diverse group of <i>Diptera</i> closely related to <i>Drosophila.</i> Although they have radiated extensively in Australia, they have been the focus of few studies. Here, we characterized the karyotypes of 12 <i>Scaptodrosophila</i> species from several species groups and showed that they have undergone similar types of karyotypic change to those seen in <i>Drosophila</i>. This includes heterochromatin amplification involved in length changes of the sex and ‘dot’ chromosomes as well as the autosomes, particularly in the <i>coracina</i> group of species. Numerous weak points along the arms of the polytene chromosomes suggest the presence of internal repetitive sequence DNA, but these regions did not C-band in mitotic chromosomes, and their analysis will depend on DNA sequencing. The nucleolar organizing regions (NORs) are at the same chromosome positions in <i>Scaptodrosophila</i> as in <i>Drosophila,</i> and the various mechanisms responsible for changing arm configurations also appear to be the same. These chromosomal studies provide a complementary resource to other investigations of this group, with several species currently being sequenced. |
| first_indexed | 2024-03-09T13:30:52Z |
| format | Article |
| id | doaj.art-17000d8509d343b7990b4a7ed4754749 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-09T13:30:52Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-17000d8509d343b7990b4a7ed47547492023-11-30T21:18:05ZengMDPI AGInsects2075-44502022-04-0113436410.3390/insects13040364Chromosome Comparisons of Australian <em>Scaptodrosophila</em> SpeciesAnn Jacob Stocker0Michele Schiffer1Eduardo Gorab2Ary Hoffmann3Pest and Environmental Adaptation Research Group, School of Biosciences, Bio21 Institute, University of Melbourne, Parkville, VIC 3010, AustraliaDaintree Rainforest Observatory, James Cook University, Cape Tribulation, QLD 4873, AustraliaDepartamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, Rua do Matão 277, Cidade Universitária, São Paulo 05508-090, SP, BrazilPest and Environmental Adaptation Research Group, School of Biosciences, Bio21 Institute, University of Melbourne, Parkville, VIC 3010, AustraliaThe <i>Scaptodrosophila</i> represent a diverse group of <i>Diptera</i> closely related to <i>Drosophila.</i> Although they have radiated extensively in Australia, they have been the focus of few studies. Here, we characterized the karyotypes of 12 <i>Scaptodrosophila</i> species from several species groups and showed that they have undergone similar types of karyotypic change to those seen in <i>Drosophila</i>. This includes heterochromatin amplification involved in length changes of the sex and ‘dot’ chromosomes as well as the autosomes, particularly in the <i>coracina</i> group of species. Numerous weak points along the arms of the polytene chromosomes suggest the presence of internal repetitive sequence DNA, but these regions did not C-band in mitotic chromosomes, and their analysis will depend on DNA sequencing. The nucleolar organizing regions (NORs) are at the same chromosome positions in <i>Scaptodrosophila</i> as in <i>Drosophila,</i> and the various mechanisms responsible for changing arm configurations also appear to be the same. These chromosomal studies provide a complementary resource to other investigations of this group, with several species currently being sequenced.https://www.mdpi.com/2075-4450/13/4/364<i>Scaptodrosophila</i>karyotypesheterochromatinNORscomparisonevolution |
| spellingShingle | Ann Jacob Stocker Michele Schiffer Eduardo Gorab Ary Hoffmann Chromosome Comparisons of Australian <em>Scaptodrosophila</em> Species Insects <i>Scaptodrosophila</i> karyotypes heterochromatin NORs comparison evolution |
| title | Chromosome Comparisons of Australian <em>Scaptodrosophila</em> Species |
| title_full | Chromosome Comparisons of Australian <em>Scaptodrosophila</em> Species |
| title_fullStr | Chromosome Comparisons of Australian <em>Scaptodrosophila</em> Species |
| title_full_unstemmed | Chromosome Comparisons of Australian <em>Scaptodrosophila</em> Species |
| title_short | Chromosome Comparisons of Australian <em>Scaptodrosophila</em> Species |
| title_sort | chromosome comparisons of australian em scaptodrosophila em species |
| topic | <i>Scaptodrosophila</i> karyotypes heterochromatin NORs comparison evolution |
| url | https://www.mdpi.com/2075-4450/13/4/364 |
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