Mitochondrial genome diversity and population structure of the giant squid Architeuthis: genetics sheds new light on one of the most enigmatic marine species
Despite its charismatic appeal to both scientists and the general public, remarkably little is known about the giant squid Architeuthis, one of the largest of the invertebrates. Although specimens of Architeuthis are becoming more readily available owing to the advancement of deep-sea fishing techni...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Journal Article |
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Royal Society
2013
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| Online Access: | http://rspb.royalsocietypublishing.org/content/280/1759/20130273.short http://hdl.handle.net/20.500.11937/33780 |
| _version_ | 1848754041896566784 |
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| author | Winkelmann, I. Campos, P. Strugnell, J. Cherel, Y. Smith, P. Kubodera, T. Allcock, L. Kampmann, M. Schroeder, H. Guerra, A. Norman, M. Finn, J. Ingrao, D. Clarke, M. Gilbert, Thomas |
| author_facet | Winkelmann, I. Campos, P. Strugnell, J. Cherel, Y. Smith, P. Kubodera, T. Allcock, L. Kampmann, M. Schroeder, H. Guerra, A. Norman, M. Finn, J. Ingrao, D. Clarke, M. Gilbert, Thomas |
| author_sort | Winkelmann, I. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Despite its charismatic appeal to both scientists and the general public, remarkably little is known about the giant squid Architeuthis, one of the largest of the invertebrates. Although specimens of Architeuthis are becoming more readily available owing to the advancement of deep-sea fishing techniques, considerable controversy exists with regard to topics as varied as their taxonomy, biology and even behaviour. In this study, we have characterized the mitochondrial genome (mitogenome) diversity of 43 Architeuthis samples collected from across the range of the species, in order to use genetic information to provide new and otherwise difficult to obtain insights into the life of this animal. The results show no detectable phylogenetic structure at the mitochondrial level and, furthermore, that the level of nucleotide diversity is exceptionally low. These observations are consistent with the hypotheses that there is only one global species of giant squid, Architeuthis dux (Steenstrup, 1857), and that it is highly vagile, possibly dispersing through both a drifting paralarval stage and migration of larger individuals. Demographic history analyses of the genetic data suggest that there has been a recent population expansion or selective sweep, which may explain the low level of genetic diversity. |
| first_indexed | 2025-11-14T08:34:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-33780 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:34:07Z |
| publishDate | 2013 |
| publisher | Royal Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-337802017-02-28T01:52:16Z Mitochondrial genome diversity and population structure of the giant squid Architeuthis: genetics sheds new light on one of the most enigmatic marine species Winkelmann, I. Campos, P. Strugnell, J. Cherel, Y. Smith, P. Kubodera, T. Allcock, L. Kampmann, M. Schroeder, H. Guerra, A. Norman, M. Finn, J. Ingrao, D. Clarke, M. Gilbert, Thomas population structure mitogenome genetic diversity Architeuthis giant squid Despite its charismatic appeal to both scientists and the general public, remarkably little is known about the giant squid Architeuthis, one of the largest of the invertebrates. Although specimens of Architeuthis are becoming more readily available owing to the advancement of deep-sea fishing techniques, considerable controversy exists with regard to topics as varied as their taxonomy, biology and even behaviour. In this study, we have characterized the mitochondrial genome (mitogenome) diversity of 43 Architeuthis samples collected from across the range of the species, in order to use genetic information to provide new and otherwise difficult to obtain insights into the life of this animal. The results show no detectable phylogenetic structure at the mitochondrial level and, furthermore, that the level of nucleotide diversity is exceptionally low. These observations are consistent with the hypotheses that there is only one global species of giant squid, Architeuthis dux (Steenstrup, 1857), and that it is highly vagile, possibly dispersing through both a drifting paralarval stage and migration of larger individuals. Demographic history analyses of the genetic data suggest that there has been a recent population expansion or selective sweep, which may explain the low level of genetic diversity. 2013 Journal Article http://hdl.handle.net/20.500.11937/33780 http://rspb.royalsocietypublishing.org/content/280/1759/20130273.short Royal Society restricted |
| spellingShingle | population structure mitogenome genetic diversity Architeuthis giant squid Winkelmann, I. Campos, P. Strugnell, J. Cherel, Y. Smith, P. Kubodera, T. Allcock, L. Kampmann, M. Schroeder, H. Guerra, A. Norman, M. Finn, J. Ingrao, D. Clarke, M. Gilbert, Thomas Mitochondrial genome diversity and population structure of the giant squid Architeuthis: genetics sheds new light on one of the most enigmatic marine species |
| title | Mitochondrial genome diversity and population structure of the giant squid Architeuthis: genetics sheds new light on one of the most enigmatic marine species |
| title_full | Mitochondrial genome diversity and population structure of the giant squid Architeuthis: genetics sheds new light on one of the most enigmatic marine species |
| title_fullStr | Mitochondrial genome diversity and population structure of the giant squid Architeuthis: genetics sheds new light on one of the most enigmatic marine species |
| title_full_unstemmed | Mitochondrial genome diversity and population structure of the giant squid Architeuthis: genetics sheds new light on one of the most enigmatic marine species |
| title_short | Mitochondrial genome diversity and population structure of the giant squid Architeuthis: genetics sheds new light on one of the most enigmatic marine species |
| title_sort | mitochondrial genome diversity and population structure of the giant squid architeuthis: genetics sheds new light on one of the most enigmatic marine species |
| topic | population structure mitogenome genetic diversity Architeuthis giant squid |
| url | http://rspb.royalsocietypublishing.org/content/280/1759/20130273.short http://hdl.handle.net/20.500.11937/33780 |