First cytogenetic information for five Nilotic elephantfishes and a problem of ancestral karyotype of the family Mormyridae (Osteoglossiformes)
The elephantfish family Mormyridae is the most diverse lineage of the primitive teleostean clade Osteoglossomorpha distributed in inland waters of all continents except Antarctica and Europe. The family Mormyridae is endemic to Africa and includes 22 genera and almost 230 species. The evolutionary r...
Published in: | Comparative Cytogenetics |
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Online Access: | https://doi.org/10.3897/CompCytogen.14i3.52727 |
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ftzenodo:oai:zenodo.org:4003314 2024-09-15T17:47:48+00:00 First cytogenetic information for five Nilotic elephantfishes and a problem of ancestral karyotype of the family Mormyridae (Osteoglossiformes) Simanovsky, Sergey Medvedev, Dmitry Tefera, Fekadu Golubtsov, Alexander 2020-08-19 https://doi.org/10.3897/CompCytogen.14i3.52727 unknown Pensoft Publishers https://zenodo.org/communities/biosyslit https://doi.org/10.3897/CompCytogen.14i3.52727 oai:zenodo.org:4003314 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Comparative Cytogenetics, 14((3)), 387-397, (2020-08-19) Animalia Chordata Actinopterygii Osteoglossiformes Mormyridae Africa chromosomes karyotype evolution Brevimyrus Cyphomyrus Hippopotamyrus Marcusenius Mormyrops info:eu-repo/semantics/article 2020 ftzenodo https://doi.org/10.3897/CompCytogen.14i3.52727 2024-07-25T14:52:50Z The elephantfish family Mormyridae is the most diverse lineage of the primitive teleostean clade Osteoglossomorpha distributed in inland waters of all continents except Antarctica and Europe. The family Mormyridae is endemic to Africa and includes 22 genera and almost 230 species. The evolutionary radiation of mormyrids most probably should be attributed to their capability of both generating and receiving weak electric signals. Up-to-date cytogenetic studies have revealed substantial karyotype differentiation among the nine investigated elephantfish species and genera (a single species studied per each genus). In the present study, karyotypes of five species representing five mormyrid genera (four unexplored ones) collected from the White Nile system in southwestern Ethiopia are described for the first time. The results show substantial variety of the diploid chromosome and fundamental numbers: 2n = 48 and FN = 54 in Brevimyrus niger (Günther, 1866), 2n = 50 and FN = 72 in Cyphomyrus petherici (Boulenger, 1898), 2n = 50 and FN = 78 in Hippopotamyrus pictus (Marcusen, 1864), 2n = 50 and FN = 76 in Marcusenius cyprinoides (Linnaeus, 1758), 2n = 52 and FN = 52 in Mormyrops anguilloides (Linnaeus, 1758). Karyotype structure in the latter species seems to be close to the ancestral condition for the family. This hypothesis is discussed in the light of available data on karyotype diversity and phylogeny of mormyrids. Article in Journal/Newspaper Antarc* Antarctica Zenodo Comparative Cytogenetics 14 3 387 397 |
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Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Animalia Chordata Actinopterygii Osteoglossiformes Mormyridae Africa chromosomes karyotype evolution Brevimyrus Cyphomyrus Hippopotamyrus Marcusenius Mormyrops |
spellingShingle |
Animalia Chordata Actinopterygii Osteoglossiformes Mormyridae Africa chromosomes karyotype evolution Brevimyrus Cyphomyrus Hippopotamyrus Marcusenius Mormyrops Simanovsky, Sergey Medvedev, Dmitry Tefera, Fekadu Golubtsov, Alexander First cytogenetic information for five Nilotic elephantfishes and a problem of ancestral karyotype of the family Mormyridae (Osteoglossiformes) |
topic_facet |
Animalia Chordata Actinopterygii Osteoglossiformes Mormyridae Africa chromosomes karyotype evolution Brevimyrus Cyphomyrus Hippopotamyrus Marcusenius Mormyrops |
description |
The elephantfish family Mormyridae is the most diverse lineage of the primitive teleostean clade Osteoglossomorpha distributed in inland waters of all continents except Antarctica and Europe. The family Mormyridae is endemic to Africa and includes 22 genera and almost 230 species. The evolutionary radiation of mormyrids most probably should be attributed to their capability of both generating and receiving weak electric signals. Up-to-date cytogenetic studies have revealed substantial karyotype differentiation among the nine investigated elephantfish species and genera (a single species studied per each genus). In the present study, karyotypes of five species representing five mormyrid genera (four unexplored ones) collected from the White Nile system in southwestern Ethiopia are described for the first time. The results show substantial variety of the diploid chromosome and fundamental numbers: 2n = 48 and FN = 54 in Brevimyrus niger (Günther, 1866), 2n = 50 and FN = 72 in Cyphomyrus petherici (Boulenger, 1898), 2n = 50 and FN = 78 in Hippopotamyrus pictus (Marcusen, 1864), 2n = 50 and FN = 76 in Marcusenius cyprinoides (Linnaeus, 1758), 2n = 52 and FN = 52 in Mormyrops anguilloides (Linnaeus, 1758). Karyotype structure in the latter species seems to be close to the ancestral condition for the family. This hypothesis is discussed in the light of available data on karyotype diversity and phylogeny of mormyrids. |
format |
Article in Journal/Newspaper |
author |
Simanovsky, Sergey Medvedev, Dmitry Tefera, Fekadu Golubtsov, Alexander |
author_facet |
Simanovsky, Sergey Medvedev, Dmitry Tefera, Fekadu Golubtsov, Alexander |
author_sort |
Simanovsky, Sergey |
title |
First cytogenetic information for five Nilotic elephantfishes and a problem of ancestral karyotype of the family Mormyridae (Osteoglossiformes) |
title_short |
First cytogenetic information for five Nilotic elephantfishes and a problem of ancestral karyotype of the family Mormyridae (Osteoglossiformes) |
title_full |
First cytogenetic information for five Nilotic elephantfishes and a problem of ancestral karyotype of the family Mormyridae (Osteoglossiformes) |
title_fullStr |
First cytogenetic information for five Nilotic elephantfishes and a problem of ancestral karyotype of the family Mormyridae (Osteoglossiformes) |
title_full_unstemmed |
First cytogenetic information for five Nilotic elephantfishes and a problem of ancestral karyotype of the family Mormyridae (Osteoglossiformes) |
title_sort |
first cytogenetic information for five nilotic elephantfishes and a problem of ancestral karyotype of the family mormyridae (osteoglossiformes) |
publisher |
Pensoft Publishers |
publishDate |
2020 |
url |
https://doi.org/10.3897/CompCytogen.14i3.52727 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Comparative Cytogenetics, 14((3)), 387-397, (2020-08-19) |
op_relation |
https://zenodo.org/communities/biosyslit https://doi.org/10.3897/CompCytogen.14i3.52727 oai:zenodo.org:4003314 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.3897/CompCytogen.14i3.52727 |
container_title |
Comparative Cytogenetics |
container_volume |
14 |
container_issue |
3 |
container_start_page |
387 |
op_container_end_page |
397 |
_version_ |
1810497372129591296 |