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...
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Online Access: | https://doi.org/10.3897/CompCytogen.14i3.52727 https://compcytogen.pensoft.net/article/52727/ |
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ftpensoft:10.3897/CompCytogen.14i3.52727 2023-05-15T14:05:14+02:00 First cytogenetic information for five Nilotic elephantfishes and a problem of ancestral karyotype of the family Mormyridae (Osteoglossiformes) Simanovsky,Sergey Medvedev,Dmitry A. Tefera,Fekadu Golubtsov,Alexander 2020 text/html https://doi.org/10.3897/CompCytogen.14i3.52727 https://compcytogen.pensoft.net/article/52727/ en eng Pensoft Publishers info:eu-repo/semantics/altIdentifier/eissn/1993-078X info:eu-repo/semantics/altIdentifier/pissn/1993-0771 info:eu-repo/semantics/openAccess Comparative Cytogenetics 14(3): 387-397 Africa chromosomes karyotype evolution Brevimyrus Cyphomyrus Hippopotamyrus Marcusenius Mormyrops Research Article 2020 ftpensoft https://doi.org/10.3897/CompCytogen.14i3.52727 2022-03-01T12:43:58Z 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 Pensoft Publishers Comparative Cytogenetics 14 3 387 397 |
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Open Polar |
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Pensoft Publishers |
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ftpensoft |
language |
English |
topic |
Africa chromosomes karyotype evolution Brevimyrus Cyphomyrus Hippopotamyrus Marcusenius Mormyrops |
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Africa chromosomes karyotype evolution Brevimyrus Cyphomyrus Hippopotamyrus Marcusenius Mormyrops Simanovsky,Sergey Medvedev,Dmitry A. Tefera,Fekadu Golubtsov,Alexander First cytogenetic information for five Nilotic elephantfishes and a problem of ancestral karyotype of the family Mormyridae (Osteoglossiformes) |
topic_facet |
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 A. Tefera,Fekadu Golubtsov,Alexander |
author_facet |
Simanovsky,Sergey Medvedev,Dmitry A. 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 https://compcytogen.pensoft.net/article/52727/ |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Comparative Cytogenetics 14(3): 387-397 |
op_relation |
info:eu-repo/semantics/altIdentifier/eissn/1993-078X info:eu-repo/semantics/altIdentifier/pissn/1993-0771 |
op_rights |
info:eu-repo/semantics/openAccess |
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 |
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1766276974951530496 |