Molecular evidence for cryptic species among the Antarctic fish Trematomus bernacchii and Trematomus hansoni
The notothenid species Trematomus bernacchii has previously been shown, by allozyme analysis, to be a complex of two cryptic species, one of which being more closely related to T. hansoni than to the other T. bernacchii cryptic species. Two T. bernacchii colour morphs, “white blotch” and “brown”, at...
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crcambridgeupr:10.1017/s0954102097000485 2024-03-03T08:37:26+00:00 Molecular evidence for cryptic species among the Antarctic fish Trematomus bernacchii and Trematomus hansoni Bernardi, Giacomo Goswami, Usha 1997 http://dx.doi.org/10.1017/s0954102097000485 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102097000485 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 9, issue 4, page 381-385 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1997 crcambridgeupr https://doi.org/10.1017/s0954102097000485 2024-02-08T08:27:54Z The notothenid species Trematomus bernacchii has previously been shown, by allozyme analysis, to be a complex of two cryptic species, one of which being more closely related to T. hansoni than to the other T. bernacchii cryptic species. Two T. bernacchii colour morphs, “white blotch” and “brown”, at McMurdo Sound, may correspond to these cryptic species. In this study, we present mitochondrial DNA sequences of the 12S and 16S ribosomal regions for six “white blotch” morphs, eight “brown” morphs collected in McMurdo Sound, one individual collected off the Antarctic Peninsula, and two T. hansoni individuals from McMurdo Sound. These sequences were compared with those of T. bernacchii and T. hansoni in the literature. Based on 14 phylogenetically informative sequences, no differences were found between “white blotch” and “brown” morphs. Furthermore, only one substitution separated these sequences from the previously published T. hansoni sequence, while 10 substitutions separated them from the previously published T. bernacchii sequence. Misidentified specimens, and sequence misreadings may be at the origin of these discrepancies. However, the presence of cryptic species within T. bernacchii and T. hansoni is not ruled out. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science McMurdo Sound Cambridge University Press Antarctic The Antarctic Antarctic Peninsula McMurdo Sound Antarctic Science 9 4 381 385 |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Bernardi, Giacomo Goswami, Usha Molecular evidence for cryptic species among the Antarctic fish Trematomus bernacchii and Trematomus hansoni |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
The notothenid species Trematomus bernacchii has previously been shown, by allozyme analysis, to be a complex of two cryptic species, one of which being more closely related to T. hansoni than to the other T. bernacchii cryptic species. Two T. bernacchii colour morphs, “white blotch” and “brown”, at McMurdo Sound, may correspond to these cryptic species. In this study, we present mitochondrial DNA sequences of the 12S and 16S ribosomal regions for six “white blotch” morphs, eight “brown” morphs collected in McMurdo Sound, one individual collected off the Antarctic Peninsula, and two T. hansoni individuals from McMurdo Sound. These sequences were compared with those of T. bernacchii and T. hansoni in the literature. Based on 14 phylogenetically informative sequences, no differences were found between “white blotch” and “brown” morphs. Furthermore, only one substitution separated these sequences from the previously published T. hansoni sequence, while 10 substitutions separated them from the previously published T. bernacchii sequence. Misidentified specimens, and sequence misreadings may be at the origin of these discrepancies. However, the presence of cryptic species within T. bernacchii and T. hansoni is not ruled out. |
format |
Article in Journal/Newspaper |
author |
Bernardi, Giacomo Goswami, Usha |
author_facet |
Bernardi, Giacomo Goswami, Usha |
author_sort |
Bernardi, Giacomo |
title |
Molecular evidence for cryptic species among the Antarctic fish Trematomus bernacchii and Trematomus hansoni |
title_short |
Molecular evidence for cryptic species among the Antarctic fish Trematomus bernacchii and Trematomus hansoni |
title_full |
Molecular evidence for cryptic species among the Antarctic fish Trematomus bernacchii and Trematomus hansoni |
title_fullStr |
Molecular evidence for cryptic species among the Antarctic fish Trematomus bernacchii and Trematomus hansoni |
title_full_unstemmed |
Molecular evidence for cryptic species among the Antarctic fish Trematomus bernacchii and Trematomus hansoni |
title_sort |
molecular evidence for cryptic species among the antarctic fish trematomus bernacchii and trematomus hansoni |
publisher |
Cambridge University Press (CUP) |
publishDate |
1997 |
url |
http://dx.doi.org/10.1017/s0954102097000485 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102097000485 |
geographic |
Antarctic The Antarctic Antarctic Peninsula McMurdo Sound |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula McMurdo Sound |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science McMurdo Sound |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science McMurdo Sound |
op_source |
Antarctic Science volume 9, issue 4, page 381-385 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102097000485 |
container_title |
Antarctic Science |
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9 |
container_issue |
4 |
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381 |
op_container_end_page |
385 |
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1792498818599616512 |