Viruses and Protists Induced-mortality of Prokaryotes around the Antarctic Peninsula during the Austral Summer
During the Austral summer 2009 we studied three areas surrounding the Antarctic Peninsula: the Bellingshausen Sea, the Bransfield Strait and the Weddell Sea. We aimed to investigate, whether viruses or protists were the main agents inducing prokaryotic mortality rates, and the sensitivity to tempera...
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ftcsic:oai:digital.csic.es:10261/317889 2024-02-11T09:56:50+01:00 Viruses and Protists Induced-mortality of Prokaryotes around the Antarctic Peninsula during the Austral Summer Vaqué, Dolors Boras, Julia Anna Torrent-Llagostera, Francesc Agustí, Susana Arrieta, Jesús María Lara, Elena Castillo, Yaiza M. Duarte, Carlos Manuel Sala, María Montserrat 2017-03-02 http://hdl.handle.net/10508/11199 http://hdl.handle.net/10261/317889 en eng Centro Oceanográfico de Canarias AM Frontiers in Microbiology, 8:241. 2017: 1-12 1664-302X http://hdl.handle.net/10508/11199 http://hdl.handle.net/10261/317889 open viruses Medio Marino Centro Oceanográfico de Canarias prokaryotes protists lysis lysogeny mortality temperature Antarctic waters education volume microbiology research coastal zone antarc research article 2017 ftcsic 2024-01-16T11:44:56Z During the Austral summer 2009 we studied three areas surrounding the Antarctic Peninsula: the Bellingshausen Sea, the Bransfield Strait and the Weddell Sea. We aimed to investigate, whether viruses or protists were the main agents inducing prokaryotic mortality rates, and the sensitivity to temperature of prokaryotic heterotrophic production and mortality based on the activation energy (Ea) for each process. Seawater samples were taken at seven depths (0.1–100 m) to quantify viruses, prokaryotes and protists abundances, and heterotrophic prokaryotic production (PHP). Viral lytic production, lysogeny, and mortality rates of prokaryotes due to viruses and protists were estimated at surface (0.1–1 m) and at the Deep Fluorescence Maximum (DFM, 12–55 m) at eight representative stations of the three areas. The average viral lytic production ranged from 1.0 ± 0.3 × 107 viruses ml−1 d−1 in the Bellingshausen Sea to1.3 ± 0.7 × 107 viruses ml−1 d−1 in the Bransfield Strait, while lysogeny, when detectable, recorded the lowest value in the Bellingshausen Sea (0.05 ± 0.05 × 107 viruses ml−1 d−1) and the highest in the Weddell Sea (4.3 ± 3.5 × 107 viruses ml−1 d−1). Average mortality rates due to viruses ranged from 9.7 ± 6.1 × 104 cells ml−1 d−1 in the Weddell Sea to 14.3 ± 4.0 × 104 cells ml−1 d−1 in the Bellingshausen Sea, and were higher than averaged grazing rates in the Weddell Sea (5.9 ± 1.1 × 104 cells ml−1 d−1) and in the Bellingshausen Sea (6.8 ± 0.9 × 104 cells ml−1 d−1). The highest impact on prokaryotes by viruses and main differences between viral and protists activities were observed in surface samples: 17.8 ± 6.8 × 104 cells ml−1 d−1 and 6.5 ± 3.9 × 104 cells ml−1 d−1 in the Weddell Sea; 22.1 ± 9.6 × 104 cells ml−1 d−1 and 11.6 ± 1.4 × 104 cells ml−1 d−1 in the Bransfield Strait; and 16.1 ± 5.7 × 104 cells ml−1 d−1 and 7.9 ± 2.6 × 104 cells ml−1 d−1 in the Bellingshausen Sea, respectively. Furthermore, the rate of lysed cells and PHP showed higher sensitivity to temperature than grazing rates by protists. We ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Weddell Sea Digital.CSIC (Spanish National Research Council) Antarctic Antarctic Peninsula Austral Bellingshausen Sea Bransfield Strait The Antarctic Weddell Weddell Sea |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
viruses Medio Marino Centro Oceanográfico de Canarias prokaryotes protists lysis lysogeny mortality temperature Antarctic waters education volume microbiology research coastal zone antarc |
spellingShingle |
viruses Medio Marino Centro Oceanográfico de Canarias prokaryotes protists lysis lysogeny mortality temperature Antarctic waters education volume microbiology research coastal zone antarc Vaqué, Dolors Boras, Julia Anna Torrent-Llagostera, Francesc Agustí, Susana Arrieta, Jesús María Lara, Elena Castillo, Yaiza M. Duarte, Carlos Manuel Sala, María Montserrat Viruses and Protists Induced-mortality of Prokaryotes around the Antarctic Peninsula during the Austral Summer |
topic_facet |
viruses Medio Marino Centro Oceanográfico de Canarias prokaryotes protists lysis lysogeny mortality temperature Antarctic waters education volume microbiology research coastal zone antarc |
description |
During the Austral summer 2009 we studied three areas surrounding the Antarctic Peninsula: the Bellingshausen Sea, the Bransfield Strait and the Weddell Sea. We aimed to investigate, whether viruses or protists were the main agents inducing prokaryotic mortality rates, and the sensitivity to temperature of prokaryotic heterotrophic production and mortality based on the activation energy (Ea) for each process. Seawater samples were taken at seven depths (0.1–100 m) to quantify viruses, prokaryotes and protists abundances, and heterotrophic prokaryotic production (PHP). Viral lytic production, lysogeny, and mortality rates of prokaryotes due to viruses and protists were estimated at surface (0.1–1 m) and at the Deep Fluorescence Maximum (DFM, 12–55 m) at eight representative stations of the three areas. The average viral lytic production ranged from 1.0 ± 0.3 × 107 viruses ml−1 d−1 in the Bellingshausen Sea to1.3 ± 0.7 × 107 viruses ml−1 d−1 in the Bransfield Strait, while lysogeny, when detectable, recorded the lowest value in the Bellingshausen Sea (0.05 ± 0.05 × 107 viruses ml−1 d−1) and the highest in the Weddell Sea (4.3 ± 3.5 × 107 viruses ml−1 d−1). Average mortality rates due to viruses ranged from 9.7 ± 6.1 × 104 cells ml−1 d−1 in the Weddell Sea to 14.3 ± 4.0 × 104 cells ml−1 d−1 in the Bellingshausen Sea, and were higher than averaged grazing rates in the Weddell Sea (5.9 ± 1.1 × 104 cells ml−1 d−1) and in the Bellingshausen Sea (6.8 ± 0.9 × 104 cells ml−1 d−1). The highest impact on prokaryotes by viruses and main differences between viral and protists activities were observed in surface samples: 17.8 ± 6.8 × 104 cells ml−1 d−1 and 6.5 ± 3.9 × 104 cells ml−1 d−1 in the Weddell Sea; 22.1 ± 9.6 × 104 cells ml−1 d−1 and 11.6 ± 1.4 × 104 cells ml−1 d−1 in the Bransfield Strait; and 16.1 ± 5.7 × 104 cells ml−1 d−1 and 7.9 ± 2.6 × 104 cells ml−1 d−1 in the Bellingshausen Sea, respectively. Furthermore, the rate of lysed cells and PHP showed higher sensitivity to temperature than grazing rates by protists. We ... |
format |
Article in Journal/Newspaper |
author |
Vaqué, Dolors Boras, Julia Anna Torrent-Llagostera, Francesc Agustí, Susana Arrieta, Jesús María Lara, Elena Castillo, Yaiza M. Duarte, Carlos Manuel Sala, María Montserrat |
author_facet |
Vaqué, Dolors Boras, Julia Anna Torrent-Llagostera, Francesc Agustí, Susana Arrieta, Jesús María Lara, Elena Castillo, Yaiza M. Duarte, Carlos Manuel Sala, María Montserrat |
author_sort |
Vaqué, Dolors |
title |
Viruses and Protists Induced-mortality of Prokaryotes around the Antarctic Peninsula during the Austral Summer |
title_short |
Viruses and Protists Induced-mortality of Prokaryotes around the Antarctic Peninsula during the Austral Summer |
title_full |
Viruses and Protists Induced-mortality of Prokaryotes around the Antarctic Peninsula during the Austral Summer |
title_fullStr |
Viruses and Protists Induced-mortality of Prokaryotes around the Antarctic Peninsula during the Austral Summer |
title_full_unstemmed |
Viruses and Protists Induced-mortality of Prokaryotes around the Antarctic Peninsula during the Austral Summer |
title_sort |
viruses and protists induced-mortality of prokaryotes around the antarctic peninsula during the austral summer |
publishDate |
2017 |
url |
http://hdl.handle.net/10508/11199 http://hdl.handle.net/10261/317889 |
geographic |
Antarctic Antarctic Peninsula Austral Bellingshausen Sea Bransfield Strait The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Austral Bellingshausen Sea Bransfield Strait The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Bransfield Strait Weddell Sea |
op_relation |
Centro Oceanográfico de Canarias AM Frontiers in Microbiology, 8:241. 2017: 1-12 1664-302X http://hdl.handle.net/10508/11199 http://hdl.handle.net/10261/317889 |
op_rights |
open |
_version_ |
1790606231599054848 |