Same same but different: The distribution of the benthic shrimp Notocrangon antarcticus
The population genetic of the Antarctic benthic shrimp Notocrangon antarcticus was analyzed with 3 polymorphic microsatellite markers and with the 16S rDNA gene. Therefore, samples from 7 different locations: Antarctic Peninsula (Larsen A, Larsen B and Larsen C), South Orkney Island, South Georgia I...
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ftawi:oai:epic.awi.de:26119 2023-05-15T13:46:51+02:00 Same same but different: The distribution of the benthic shrimp Notocrangon antarcticus Robitzch, Vanessa 2011 application/pdf https://epic.awi.de/id/eprint/26119/ https://epic.awi.de/id/eprint/26119/1/BA_donee.pdf https://hdl.handle.net/10013/epic.39070 https://hdl.handle.net/10013/epic.39070.d001 unknown https://epic.awi.de/id/eprint/26119/1/BA_donee.pdf https://hdl.handle.net/10013/epic.39070.d001 Robitzch, V. (2011) Same same but different: The distribution of the benthic shrimp Notocrangon antarcticus , Bachelor thesis, University of Regensburg. hdl:10013/epic.39070 EPIC361 p. Thesis notRev 2011 ftawi 2021-12-24T15:35:39Z The population genetic of the Antarctic benthic shrimp Notocrangon antarcticus was analyzed with 3 polymorphic microsatellite markers and with the 16S rDNA gene. Therefore, samples from 7 different locations: Antarctic Peninsula (Larsen A, Larsen B and Larsen C), South Orkney Island, South Georgia Island, East Weddell Sea and Terre Adélie were collected during the CEAMARC (2007) and CAMBIO (2011) expedition. The results of the mitochondrial 16S gene marker showed two clades within the haplotype network, one for South Georgian samples and the other one for the rest of the samples tested herein (Antarctic Peninsula, South Orkney Island, East Weddell Sea and Terre Adélie). The microsatellite data reinforced the results from the 16S haplotype network showing as well genetically differentiated population clusters – one for SGI and one for the rest of specimen of the continental shelf and the South Orkney Island (SOI). In addition, the microsatellite data gave some hints on a further genetically partially differentiated population for the samples of the Larsen C shelf of the Antarctic Peninsula. Last mentioned however, still needs to be further analyzed. All in all, the population of SGI shows a clear genetic isolation from all other tested populations and can be considered as an independent evolutionary significant unit (ESU). Furthermore N. antarcticus seems to have a circumpolar distribution with more or less constant gene flow around the Antarctic continental shelf including the island of South Orkney. Nevertheless, further microsatellite primers should be isolated in order to give higher evidence to the data. Usually, six to eight polymorphic markers are recommended for such tests. In addition, the number of individuals tested per location should also be increased. Thesis Antarc* Antarctic Antarctic Peninsula antarcticus South Georgia Island Weddell Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic The Antarctic Antarctic Peninsula Weddell Sea Weddell Terre Adélie ENVELOPE(139.000,139.000,-67.000,-67.000) Terre-Adélie ENVELOPE(138.991,138.991,-59.999,-59.999) Soi ENVELOPE(30.704,30.704,66.481,66.481) South Georgia Island ENVELOPE(-36.750,-36.750,-54.250,-54.250) |
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Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The population genetic of the Antarctic benthic shrimp Notocrangon antarcticus was analyzed with 3 polymorphic microsatellite markers and with the 16S rDNA gene. Therefore, samples from 7 different locations: Antarctic Peninsula (Larsen A, Larsen B and Larsen C), South Orkney Island, South Georgia Island, East Weddell Sea and Terre Adélie were collected during the CEAMARC (2007) and CAMBIO (2011) expedition. The results of the mitochondrial 16S gene marker showed two clades within the haplotype network, one for South Georgian samples and the other one for the rest of the samples tested herein (Antarctic Peninsula, South Orkney Island, East Weddell Sea and Terre Adélie). The microsatellite data reinforced the results from the 16S haplotype network showing as well genetically differentiated population clusters – one for SGI and one for the rest of specimen of the continental shelf and the South Orkney Island (SOI). In addition, the microsatellite data gave some hints on a further genetically partially differentiated population for the samples of the Larsen C shelf of the Antarctic Peninsula. Last mentioned however, still needs to be further analyzed. All in all, the population of SGI shows a clear genetic isolation from all other tested populations and can be considered as an independent evolutionary significant unit (ESU). Furthermore N. antarcticus seems to have a circumpolar distribution with more or less constant gene flow around the Antarctic continental shelf including the island of South Orkney. Nevertheless, further microsatellite primers should be isolated in order to give higher evidence to the data. Usually, six to eight polymorphic markers are recommended for such tests. In addition, the number of individuals tested per location should also be increased. |
format |
Thesis |
author |
Robitzch, Vanessa |
spellingShingle |
Robitzch, Vanessa Same same but different: The distribution of the benthic shrimp Notocrangon antarcticus |
author_facet |
Robitzch, Vanessa |
author_sort |
Robitzch, Vanessa |
title |
Same same but different: The distribution of the benthic shrimp Notocrangon antarcticus |
title_short |
Same same but different: The distribution of the benthic shrimp Notocrangon antarcticus |
title_full |
Same same but different: The distribution of the benthic shrimp Notocrangon antarcticus |
title_fullStr |
Same same but different: The distribution of the benthic shrimp Notocrangon antarcticus |
title_full_unstemmed |
Same same but different: The distribution of the benthic shrimp Notocrangon antarcticus |
title_sort |
same same but different: the distribution of the benthic shrimp notocrangon antarcticus |
publishDate |
2011 |
url |
https://epic.awi.de/id/eprint/26119/ https://epic.awi.de/id/eprint/26119/1/BA_donee.pdf https://hdl.handle.net/10013/epic.39070 https://hdl.handle.net/10013/epic.39070.d001 |
long_lat |
ENVELOPE(139.000,139.000,-67.000,-67.000) ENVELOPE(138.991,138.991,-59.999,-59.999) ENVELOPE(30.704,30.704,66.481,66.481) ENVELOPE(-36.750,-36.750,-54.250,-54.250) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Weddell Sea Weddell Terre Adélie Terre-Adélie Soi South Georgia Island |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Weddell Sea Weddell Terre Adélie Terre-Adélie Soi South Georgia Island |
genre |
Antarc* Antarctic Antarctic Peninsula antarcticus South Georgia Island Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula antarcticus South Georgia Island Weddell Sea |
op_source |
EPIC361 p. |
op_relation |
https://epic.awi.de/id/eprint/26119/1/BA_donee.pdf https://hdl.handle.net/10013/epic.39070.d001 Robitzch, V. (2011) Same same but different: The distribution of the benthic shrimp Notocrangon antarcticus , Bachelor thesis, University of Regensburg. hdl:10013/epic.39070 |
_version_ |
1766245354922049536 |