Chromosome-banding study of the Alaska blackfish, Dallia pectoralis (Euteleostei: Esocae), with implications for karyotype evolution and relationship of esocoid fishes
Chromosomes of Dallia pectoralis from two widely separated locations in Alaska (Yukon River system and Colville River) were analyzed by Giemsa staining, C-banding, and Chromomycin A 3 fluorescence. The karyotype was redescribed more precisely. The diploid number 2n = 78 was found, but a significant...
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1996
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Online Access: | http://dx.doi.org/10.1139/z96-019 http://www.nrcresearchpress.com/doi/pdf/10.1139/z96-019 |
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crcansciencepubl:10.1139/z96-019 2023-12-17T10:17:49+01:00 Chromosome-banding study of the Alaska blackfish, Dallia pectoralis (Euteleostei: Esocae), with implications for karyotype evolution and relationship of esocoid fishes Crossman, E. J. Ráb, P. 1996 http://dx.doi.org/10.1139/z96-019 http://www.nrcresearchpress.com/doi/pdf/10.1139/z96-019 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 74, issue 1, page 147-156 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1996 crcansciencepubl https://doi.org/10.1139/z96-019 2023-11-19T13:39:38Z Chromosomes of Dallia pectoralis from two widely separated locations in Alaska (Yukon River system and Colville River) were analyzed by Giemsa staining, C-banding, and Chromomycin A 3 fluorescence. The karyotype was redescribed more precisely. The diploid number 2n = 78 was found, but a significant number of cells with 74–77 chromosomes in individuals from the Yukon River indicate chromosomal polymorphism in the species. The diploid chromosome number of individuals from Colville River was constant (2n = 74). Colville River individuals had one more pair of metacentrics than Yukon River individuals with 2n = 76. The distribution of heterochromatin was nearly the same, and the number and location of nucleolar organizer regions (NORs) was identical. The variation (71–79) may be attributable to the association of NOR-bearing chromosomes or to chromosomal distinction between populations in the two rivers. The results suggest close relationships among all the species of Umbra, a closer relationship between Novumbra and Dallia than either bears to Umbra, and a possible closer relationship between Umbra and Esox than between Esox and Novumbra plus Dallia. Article in Journal/Newspaper Alaska blackfish Dallia pectoralis Yukon river Alaska Yukon Canadian Science Publishing (via Crossref) Yukon Canadian Journal of Zoology 74 1 147 156 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Crossman, E. J. Ráb, P. Chromosome-banding study of the Alaska blackfish, Dallia pectoralis (Euteleostei: Esocae), with implications for karyotype evolution and relationship of esocoid fishes |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Chromosomes of Dallia pectoralis from two widely separated locations in Alaska (Yukon River system and Colville River) were analyzed by Giemsa staining, C-banding, and Chromomycin A 3 fluorescence. The karyotype was redescribed more precisely. The diploid number 2n = 78 was found, but a significant number of cells with 74–77 chromosomes in individuals from the Yukon River indicate chromosomal polymorphism in the species. The diploid chromosome number of individuals from Colville River was constant (2n = 74). Colville River individuals had one more pair of metacentrics than Yukon River individuals with 2n = 76. The distribution of heterochromatin was nearly the same, and the number and location of nucleolar organizer regions (NORs) was identical. The variation (71–79) may be attributable to the association of NOR-bearing chromosomes or to chromosomal distinction between populations in the two rivers. The results suggest close relationships among all the species of Umbra, a closer relationship between Novumbra and Dallia than either bears to Umbra, and a possible closer relationship between Umbra and Esox than between Esox and Novumbra plus Dallia. |
format |
Article in Journal/Newspaper |
author |
Crossman, E. J. Ráb, P. |
author_facet |
Crossman, E. J. Ráb, P. |
author_sort |
Crossman, E. J. |
title |
Chromosome-banding study of the Alaska blackfish, Dallia pectoralis (Euteleostei: Esocae), with implications for karyotype evolution and relationship of esocoid fishes |
title_short |
Chromosome-banding study of the Alaska blackfish, Dallia pectoralis (Euteleostei: Esocae), with implications for karyotype evolution and relationship of esocoid fishes |
title_full |
Chromosome-banding study of the Alaska blackfish, Dallia pectoralis (Euteleostei: Esocae), with implications for karyotype evolution and relationship of esocoid fishes |
title_fullStr |
Chromosome-banding study of the Alaska blackfish, Dallia pectoralis (Euteleostei: Esocae), with implications for karyotype evolution and relationship of esocoid fishes |
title_full_unstemmed |
Chromosome-banding study of the Alaska blackfish, Dallia pectoralis (Euteleostei: Esocae), with implications for karyotype evolution and relationship of esocoid fishes |
title_sort |
chromosome-banding study of the alaska blackfish, dallia pectoralis (euteleostei: esocae), with implications for karyotype evolution and relationship of esocoid fishes |
publisher |
Canadian Science Publishing |
publishDate |
1996 |
url |
http://dx.doi.org/10.1139/z96-019 http://www.nrcresearchpress.com/doi/pdf/10.1139/z96-019 |
geographic |
Yukon |
geographic_facet |
Yukon |
genre |
Alaska blackfish Dallia pectoralis Yukon river Alaska Yukon |
genre_facet |
Alaska blackfish Dallia pectoralis Yukon river Alaska Yukon |
op_source |
Canadian Journal of Zoology volume 74, issue 1, page 147-156 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z96-019 |
container_title |
Canadian Journal of Zoology |
container_volume |
74 |
container_issue |
1 |
container_start_page |
147 |
op_container_end_page |
156 |
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1785591849959817216 |