THE PHYLOGENETIC RELATIONSHIPS OF THE MEMBERS OF THE DROSOPHILA ROBUSTA GROUP
ABSTRACT The phylogenetic relationships among the species of the D. robusta group were investigated by the analysis of chromosomal differences. Six of the ten known members of the D. robusta group were available for the study: D. colorata and D. robusta from the United States, and D. sordidula, D. p...
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Oxford University Press (OUP)
1973
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Online Access: | http://dx.doi.org/10.1093/genetics/73.2.319 http://academic.oup.com/genetics/article-pdf/73/2/319/34391540/genetics0319.pdf |
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croxfordunivpr:10.1093/genetics/73.2.319 2023-12-31T10:05:20+01:00 THE PHYLOGENETIC RELATIONSHIPS OF THE MEMBERS OF THE DROSOPHILA ROBUSTA GROUP Narayanan, Yamuna 1973 http://dx.doi.org/10.1093/genetics/73.2.319 http://academic.oup.com/genetics/article-pdf/73/2/319/34391540/genetics0319.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Genetics volume 73, issue 2, page 319-350 ISSN 1943-2631 Genetics journal-article 1973 croxfordunivpr https://doi.org/10.1093/genetics/73.2.319 2023-12-06T08:36:49Z ABSTRACT The phylogenetic relationships among the species of the D. robusta group were investigated by the analysis of chromosomal differences. Six of the ten known members of the D. robusta group were available for the study: D. colorata and D. robusta from the United States, and D. sordidula, D. pseudosordidula, D. lacertosa, and D, moriwakii from Japan. Analysis of the metaphase chromosomes from larval ganglion cells suggests that D. moriwakii and D. colorata, with rod-shaped X-chromosomes, are the more ancestral species, while D. sordidula, D. pseudosordidula, D. robusta, and D. lacertosa, with Vshaped X-chromosomes, are derived. The ancestral position of D. colorata and D. moriwakii is further strengthened by the fact that these are the two species in the D. robusta group that are cytologically closest to D. nigromelanica of the related D. melanica group. Of the four derived species, D. sordidula was found to be the closest to the ancestral species. The phylogeny based on the analysis of the gene sequences in the homologous chromosomes agreed with that indicated by the metaphase chromosomes. Since all attempts to obtain hybrids were unsuccessful except for the cross involving D. moriwakii females and D. colorata males, photographic maps of the salivary chromosomes were used to determine homology between the chromosomes of the different species. Evidence is presented to indicate that the D. robusta group originated in Asia (Japan), and that there were two migrations to the New World, the first leading to D. robusta, and the second to D. colorata. It is suggested that the route of migrations was across the Bering Land Bridge, and further, that the migrations occurred during the period from late Oligocene to middle Miocene, 20-25 million years ago. Article in Journal/Newspaper Bering Land Bridge Oxford University Press (via Crossref) Genetics 73 2 319 350 |
institution |
Open Polar |
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Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Genetics |
spellingShingle |
Genetics Narayanan, Yamuna THE PHYLOGENETIC RELATIONSHIPS OF THE MEMBERS OF THE DROSOPHILA ROBUSTA GROUP |
topic_facet |
Genetics |
description |
ABSTRACT The phylogenetic relationships among the species of the D. robusta group were investigated by the analysis of chromosomal differences. Six of the ten known members of the D. robusta group were available for the study: D. colorata and D. robusta from the United States, and D. sordidula, D. pseudosordidula, D. lacertosa, and D, moriwakii from Japan. Analysis of the metaphase chromosomes from larval ganglion cells suggests that D. moriwakii and D. colorata, with rod-shaped X-chromosomes, are the more ancestral species, while D. sordidula, D. pseudosordidula, D. robusta, and D. lacertosa, with Vshaped X-chromosomes, are derived. The ancestral position of D. colorata and D. moriwakii is further strengthened by the fact that these are the two species in the D. robusta group that are cytologically closest to D. nigromelanica of the related D. melanica group. Of the four derived species, D. sordidula was found to be the closest to the ancestral species. The phylogeny based on the analysis of the gene sequences in the homologous chromosomes agreed with that indicated by the metaphase chromosomes. Since all attempts to obtain hybrids were unsuccessful except for the cross involving D. moriwakii females and D. colorata males, photographic maps of the salivary chromosomes were used to determine homology between the chromosomes of the different species. Evidence is presented to indicate that the D. robusta group originated in Asia (Japan), and that there were two migrations to the New World, the first leading to D. robusta, and the second to D. colorata. It is suggested that the route of migrations was across the Bering Land Bridge, and further, that the migrations occurred during the period from late Oligocene to middle Miocene, 20-25 million years ago. |
format |
Article in Journal/Newspaper |
author |
Narayanan, Yamuna |
author_facet |
Narayanan, Yamuna |
author_sort |
Narayanan, Yamuna |
title |
THE PHYLOGENETIC RELATIONSHIPS OF THE MEMBERS OF THE DROSOPHILA ROBUSTA GROUP |
title_short |
THE PHYLOGENETIC RELATIONSHIPS OF THE MEMBERS OF THE DROSOPHILA ROBUSTA GROUP |
title_full |
THE PHYLOGENETIC RELATIONSHIPS OF THE MEMBERS OF THE DROSOPHILA ROBUSTA GROUP |
title_fullStr |
THE PHYLOGENETIC RELATIONSHIPS OF THE MEMBERS OF THE DROSOPHILA ROBUSTA GROUP |
title_full_unstemmed |
THE PHYLOGENETIC RELATIONSHIPS OF THE MEMBERS OF THE DROSOPHILA ROBUSTA GROUP |
title_sort |
phylogenetic relationships of the members of the drosophila robusta group |
publisher |
Oxford University Press (OUP) |
publishDate |
1973 |
url |
http://dx.doi.org/10.1093/genetics/73.2.319 http://academic.oup.com/genetics/article-pdf/73/2/319/34391540/genetics0319.pdf |
genre |
Bering Land Bridge |
genre_facet |
Bering Land Bridge |
op_source |
Genetics volume 73, issue 2, page 319-350 ISSN 1943-2631 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/genetics/73.2.319 |
container_title |
Genetics |
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73 |
container_issue |
2 |
container_start_page |
319 |
op_container_end_page |
350 |
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1786836919964925952 |