Insights from 180 years of mitochondrial variability in the endangered Mediterranean monk seal (Monachus monachus)
Mediterranean monk seals (MMS) are among the most endangered marine mammals on Earth. We screened mitochondrial variability (control region [CR1] and mitogenomes) of the species through a 180-yr timeframe and extended by 20% (n = 205) the number of samples from a previous investigation, including hi...
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ftird:oai:ird.fr:fdi:010077132 2023-05-15T17:27:21+02:00 Insights from 180 years of mitochondrial variability in the endangered Mediterranean monk seal (Monachus monachus) Gaubert, Philippe Justy, F. Mo, G. Aguilar, A. Danyer, E. Borrell, A. Dendrinos, P. Ozturk, B. Improta, R. Tonay, A. M. Karamanlidis, A. A. MEDITERRANEE ATLANTIQUE NORD 2019 http://www.documentation.ird.fr/hor/fdi:010077132 EN eng http://www.documentation.ird.fr/hor/fdi:010077132 oai:ird.fr:fdi:010077132 Gaubert Philippe, Justy F., Mo G., Aguilar A., Danyer E., Borrell A., Dendrinos P., Ozturk B., Improta R., Tonay A. M., Karamanlidis A. A. Insights from 180 years of mitochondrial variability in the endangered Mediterranean monk seal (Monachus monachus). Marine Mammal Science, 2019, 35 (4), p. 1489-1511. ancient DNA conservation genetics genetic variability Mediterranean monk seal Mediterranean Sea metapopulation mitochondrial DNA Monachus monachus North Atlantic Ocean text 2019 ftird 2020-08-21T06:48:25Z Mediterranean monk seals (MMS) are among the most endangered marine mammals on Earth. We screened mitochondrial variability (control region [CR1] and mitogenomes) of the species through a 180-yr timeframe and extended by 20% (n = 205) the number of samples from a previous investigation, including historical specimens from 1833 to 1975. Although we detected two new, rare CR1 haplotypes, genetic diversity remained extremely low. Fully resolved haplotype median network and rarefaction analysis both suggested low probability for further unscreened haplotypes. There was no clear phylogeographic structure across the 12 marine subdivisions covered by the species' range. Haplotypes previously considered diagnostic of the extant North Atlantic and eastern Mediterranean populations had their distributions extended into the western Mediterranean and the North Atlantic, respectively, by both historical and recent samples. Our study suggests that MMS have been genetically depauperate since at least the mid-19th century, and that the massive 1997 die-off in Western Sahara (North Atlantic) could have caused local haplotype extinctions. Our results support the hypothesis of past metapopulation dynamics across the species range, where the current segregation into geographically distant and genetically depauperate breeding populations (i.e., North Atlantic and eastern Mediterranean Sea) derives from the combined effects of historical extinctions, genetic drift on small breeding groups, and persistently low levels of genetic diversity. Text North Atlantic IRD (Institute de recherche pour le développement): Horizon |
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Open Polar |
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IRD (Institute de recherche pour le développement): Horizon |
op_collection_id |
ftird |
language |
English |
topic |
ancient DNA conservation genetics genetic variability Mediterranean monk seal Mediterranean Sea metapopulation mitochondrial DNA Monachus monachus North Atlantic Ocean |
spellingShingle |
ancient DNA conservation genetics genetic variability Mediterranean monk seal Mediterranean Sea metapopulation mitochondrial DNA Monachus monachus North Atlantic Ocean Gaubert, Philippe Justy, F. Mo, G. Aguilar, A. Danyer, E. Borrell, A. Dendrinos, P. Ozturk, B. Improta, R. Tonay, A. M. Karamanlidis, A. A. Insights from 180 years of mitochondrial variability in the endangered Mediterranean monk seal (Monachus monachus) |
topic_facet |
ancient DNA conservation genetics genetic variability Mediterranean monk seal Mediterranean Sea metapopulation mitochondrial DNA Monachus monachus North Atlantic Ocean |
description |
Mediterranean monk seals (MMS) are among the most endangered marine mammals on Earth. We screened mitochondrial variability (control region [CR1] and mitogenomes) of the species through a 180-yr timeframe and extended by 20% (n = 205) the number of samples from a previous investigation, including historical specimens from 1833 to 1975. Although we detected two new, rare CR1 haplotypes, genetic diversity remained extremely low. Fully resolved haplotype median network and rarefaction analysis both suggested low probability for further unscreened haplotypes. There was no clear phylogeographic structure across the 12 marine subdivisions covered by the species' range. Haplotypes previously considered diagnostic of the extant North Atlantic and eastern Mediterranean populations had their distributions extended into the western Mediterranean and the North Atlantic, respectively, by both historical and recent samples. Our study suggests that MMS have been genetically depauperate since at least the mid-19th century, and that the massive 1997 die-off in Western Sahara (North Atlantic) could have caused local haplotype extinctions. Our results support the hypothesis of past metapopulation dynamics across the species range, where the current segregation into geographically distant and genetically depauperate breeding populations (i.e., North Atlantic and eastern Mediterranean Sea) derives from the combined effects of historical extinctions, genetic drift on small breeding groups, and persistently low levels of genetic diversity. |
format |
Text |
author |
Gaubert, Philippe Justy, F. Mo, G. Aguilar, A. Danyer, E. Borrell, A. Dendrinos, P. Ozturk, B. Improta, R. Tonay, A. M. Karamanlidis, A. A. |
author_facet |
Gaubert, Philippe Justy, F. Mo, G. Aguilar, A. Danyer, E. Borrell, A. Dendrinos, P. Ozturk, B. Improta, R. Tonay, A. M. Karamanlidis, A. A. |
author_sort |
Gaubert, Philippe |
title |
Insights from 180 years of mitochondrial variability in the endangered Mediterranean monk seal (Monachus monachus) |
title_short |
Insights from 180 years of mitochondrial variability in the endangered Mediterranean monk seal (Monachus monachus) |
title_full |
Insights from 180 years of mitochondrial variability in the endangered Mediterranean monk seal (Monachus monachus) |
title_fullStr |
Insights from 180 years of mitochondrial variability in the endangered Mediterranean monk seal (Monachus monachus) |
title_full_unstemmed |
Insights from 180 years of mitochondrial variability in the endangered Mediterranean monk seal (Monachus monachus) |
title_sort |
insights from 180 years of mitochondrial variability in the endangered mediterranean monk seal (monachus monachus) |
publishDate |
2019 |
url |
http://www.documentation.ird.fr/hor/fdi:010077132 |
op_coverage |
MEDITERRANEE ATLANTIQUE NORD |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://www.documentation.ird.fr/hor/fdi:010077132 oai:ird.fr:fdi:010077132 Gaubert Philippe, Justy F., Mo G., Aguilar A., Danyer E., Borrell A., Dendrinos P., Ozturk B., Improta R., Tonay A. M., Karamanlidis A. A. Insights from 180 years of mitochondrial variability in the endangered Mediterranean monk seal (Monachus monachus). Marine Mammal Science, 2019, 35 (4), p. 1489-1511. |
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1766119400172158976 |