Protistan assemblages across the Indian Ocean, with a specific emphasis on the picoeukaryotes
Protists, and among them the picoeukaryotes (cells
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| Veröffentlicht in: | Deep-sea research. Part I, Oceanographic research papers Oceanographic research papers, 2008-11, Vol.55 (11), p.1456-1473 |
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| container_title | Deep-sea research. Part I, Oceanographic research papers |
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| creator | Not, Fabrice Latasa, Mikel Scharek, Renate Viprey, Manon Karleskind, Pierre Balagué, Vanessa Ontoria-Oviedo, Imelda Cumino, Andrea Goetze, Erica Vaulot, Daniel Massana, Ramon |
| description | Protists, and among them the picoeukaryotes (cells |
| doi_str_mv | 10.1016/j.dsr.2008.06.007 |
| format | Article |
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μm), have been described as significant contributors to both carbon biomass and production in oligotrophic regions of the oceans. However, protist assemblages remain largely undescribed in pelagic ecosystems and in particular in the Indian Ocean. In the present work, we investigated protists along an eastward transect across the sub-tropical gyre of the Indian Ocean (from South Africa to Australia), with a particular focus on picoeukaryotes. We combined inverted and epifluorescence microscopy, flow cytometry, pigment analysis, denaturing gel gradient electrophoresis (DGGE), 18S rDNA clone libraries, and fluorescent
in situ hybridization (FISH). Overall the picophytoplankton fraction contributed 88% and 90% of total Chl
a at the surface and DCM, respectively, with picoeukaryotes accounting for 38% and 50% of total Chl
a at the surface and DCM. Considering only the Indian South Subtropical Gyre (ISSG) province, we observed greater shifts in the picoeukaryotic assemblage throughout the upper 200
m of the water column than along the ca. 10,000
km cruise track. In terms of taxonomic diversity and contribution of each taxon to the picoeukaryotic community, prasinophytes were well represented at more coastal stations with the genus
Micromonas reaching densities up to 750
cell
mL
−1 in coastal waters and less than 100
cell
mL
−1 at open ocean stations. Haptophytes (56% and 45% of picoeukaryotic pigments at surface and DCM, respectively) and possibly pelagophytes (28% and 40% of picoeukaryotic pigments at surface and DCM, respectively) appeared to be dominant at open ocean stations. Other groups and in particular organisms affiliated to chrysophytes, and to a lesser extent to cryptophytes, appear as clear targets for future qualitative and quantitative studies. Moreover, the occurrence of many sequences related to radiolarians (5% and 27% at surface and DCM, respectively) will require further investigation.</description><identifier>ISSN: 0967-0637</identifier><identifier>EISSN: 1879-0119</identifier><identifier>DOI: 10.1016/j.dsr.2008.06.007</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Animal and plant ecology ; Animal, plant and microbial ecology ; Biological and medical sciences ; Biological diversity ; Diversity ; Eukaryotes ; Fundamental and applied biological sciences. Psychology ; Indian Ocean ; Marine ; Micromonas ; Microorganisms ; Oceanography ; Oceans ; Phytoplankton ; Picoplankton ; Protist ; Radiolaria ; Sea water ecosystems ; Synecology</subject><ispartof>Deep-sea research. Part I, Oceanographic research papers, 2008-11, Vol.55 (11), p.1456-1473</ispartof><rights>2008 Elsevier Ltd</rights><rights>2009 INIST-CNRS</rights><rights>Copyright Pergamon Press Inc. Nov 2008</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c385t-57ad37270b8f6836365cfd34270b7ea7d1529f9d9c757a14184f7c62c81420e33</citedby><cites>FETCH-LOGICAL-c385t-57ad37270b8f6836365cfd34270b7ea7d1529f9d9c757a14184f7c62c81420e33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.dsr.2008.06.007$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>315,782,786,3552,27931,27932,46002</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20811284$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Not, Fabrice</creatorcontrib><creatorcontrib>Latasa, Mikel</creatorcontrib><creatorcontrib>Scharek, Renate</creatorcontrib><creatorcontrib>Viprey, Manon</creatorcontrib><creatorcontrib>Karleskind, Pierre</creatorcontrib><creatorcontrib>Balagué, Vanessa</creatorcontrib><creatorcontrib>Ontoria-Oviedo, Imelda</creatorcontrib><creatorcontrib>Cumino, Andrea</creatorcontrib><creatorcontrib>Goetze, Erica</creatorcontrib><creatorcontrib>Vaulot, Daniel</creatorcontrib><creatorcontrib>Massana, Ramon</creatorcontrib><title>Protistan assemblages across the Indian Ocean, with a specific emphasis on the picoeukaryotes</title><title>Deep-sea research. Part I, Oceanographic research papers</title><description>Protists, and among them the picoeukaryotes (cells<3
μm), have been described as significant contributors to both carbon biomass and production in oligotrophic regions of the oceans. However, protist assemblages remain largely undescribed in pelagic ecosystems and in particular in the Indian Ocean. In the present work, we investigated protists along an eastward transect across the sub-tropical gyre of the Indian Ocean (from South Africa to Australia), with a particular focus on picoeukaryotes. We combined inverted and epifluorescence microscopy, flow cytometry, pigment analysis, denaturing gel gradient electrophoresis (DGGE), 18S rDNA clone libraries, and fluorescent
in situ hybridization (FISH). Overall the picophytoplankton fraction contributed 88% and 90% of total Chl
a at the surface and DCM, respectively, with picoeukaryotes accounting for 38% and 50% of total Chl
a at the surface and DCM. Considering only the Indian South Subtropical Gyre (ISSG) province, we observed greater shifts in the picoeukaryotic assemblage throughout the upper 200
m of the water column than along the ca. 10,000
km cruise track. In terms of taxonomic diversity and contribution of each taxon to the picoeukaryotic community, prasinophytes were well represented at more coastal stations with the genus
Micromonas reaching densities up to 750
cell
mL
−1 in coastal waters and less than 100
cell
mL
−1 at open ocean stations. Haptophytes (56% and 45% of picoeukaryotic pigments at surface and DCM, respectively) and possibly pelagophytes (28% and 40% of picoeukaryotic pigments at surface and DCM, respectively) appeared to be dominant at open ocean stations. Other groups and in particular organisms affiliated to chrysophytes, and to a lesser extent to cryptophytes, appear as clear targets for future qualitative and quantitative studies. Moreover, the occurrence of many sequences related to radiolarians (5% and 27% at surface and DCM, respectively) will require further investigation.</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Biological and medical sciences</subject><subject>Biological diversity</subject><subject>Diversity</subject><subject>Eukaryotes</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Indian Ocean</subject><subject>Marine</subject><subject>Micromonas</subject><subject>Microorganisms</subject><subject>Oceanography</subject><subject>Oceans</subject><subject>Phytoplankton</subject><subject>Picoplankton</subject><subject>Protist</subject><subject>Radiolaria</subject><subject>Sea water ecosystems</subject><subject>Synecology</subject><issn>0967-0637</issn><issn>1879-0119</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNp9kM1q3DAUhUVpIdNJHyA7UUhXsXtleySZrsqQn4HAZJEsi9DI1x1NPZaj60nJ20fzQxZddCEE0nfOlT7GLgTkAoT8vskbinkBoHOQOYD6wCZCqzoDIeqPbAK1VBnIUp2xz0QbgBTSMGG_HmIYPY2255YIt6vO_kbi1sVAxMc18kXf-HS7dGj7K_7Xj2tuOQ3ofOsdx-2wtuSJh_5AD94F3P2x8TWMSOfsU2s7wi-nfcqebq4f53fZ_fJ2Mf95n7lSz8ZspmxTqkLBSrdSl7KUM9c2ZbU_UWhVI2ZF3dZN7VRCRSV01SonC6dFVQCW5ZR9O_YOMTzvkEaz9eSw62yPYUdG1Km2SmvKvv4DbsIu9ulte0YViVMJEkfoICFia4bot-lLRoDZ2zYbk2ybvW0D0iTbKXN5KrbkbNdG2ztP78ECtBCFrhL348hh0vHiMRpyHnuHjY_oRtME_58pb3N0k_o</recordid><startdate>20081101</startdate><enddate>20081101</enddate><creator>Not, Fabrice</creator><creator>Latasa, Mikel</creator><creator>Scharek, Renate</creator><creator>Viprey, Manon</creator><creator>Karleskind, Pierre</creator><creator>Balagué, Vanessa</creator><creator>Ontoria-Oviedo, Imelda</creator><creator>Cumino, Andrea</creator><creator>Goetze, Erica</creator><creator>Vaulot, Daniel</creator><creator>Massana, Ramon</creator><general>Elsevier Ltd</general><general>Elsevier</general><general>Pergamon Press Inc</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7TN</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>H96</scope><scope>L.G</scope><scope>M7N</scope></search><sort><creationdate>20081101</creationdate><title>Protistan assemblages across the Indian Ocean, with a specific emphasis on the picoeukaryotes</title><author>Not, Fabrice ; Latasa, Mikel ; Scharek, Renate ; Viprey, Manon ; Karleskind, Pierre ; Balagué, Vanessa ; Ontoria-Oviedo, Imelda ; Cumino, Andrea ; Goetze, Erica ; Vaulot, Daniel ; Massana, Ramon</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c385t-57ad37270b8f6836365cfd34270b7ea7d1529f9d9c757a14184f7c62c81420e33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Biological and medical sciences</topic><topic>Biological diversity</topic><topic>Diversity</topic><topic>Eukaryotes</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Indian Ocean</topic><topic>Marine</topic><topic>Micromonas</topic><topic>Microorganisms</topic><topic>Oceanography</topic><topic>Oceans</topic><topic>Phytoplankton</topic><topic>Picoplankton</topic><topic>Protist</topic><topic>Radiolaria</topic><topic>Sea water ecosystems</topic><topic>Synecology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Not, Fabrice</creatorcontrib><creatorcontrib>Latasa, Mikel</creatorcontrib><creatorcontrib>Scharek, Renate</creatorcontrib><creatorcontrib>Viprey, Manon</creatorcontrib><creatorcontrib>Karleskind, Pierre</creatorcontrib><creatorcontrib>Balagué, Vanessa</creatorcontrib><creatorcontrib>Ontoria-Oviedo, Imelda</creatorcontrib><creatorcontrib>Cumino, Andrea</creatorcontrib><creatorcontrib>Goetze, Erica</creatorcontrib><creatorcontrib>Vaulot, Daniel</creatorcontrib><creatorcontrib>Massana, Ramon</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><jtitle>Deep-sea research. Part I, Oceanographic research papers</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Not, Fabrice</au><au>Latasa, Mikel</au><au>Scharek, Renate</au><au>Viprey, Manon</au><au>Karleskind, Pierre</au><au>Balagué, Vanessa</au><au>Ontoria-Oviedo, Imelda</au><au>Cumino, Andrea</au><au>Goetze, Erica</au><au>Vaulot, Daniel</au><au>Massana, Ramon</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Protistan assemblages across the Indian Ocean, with a specific emphasis on the picoeukaryotes</atitle><jtitle>Deep-sea research. Part I, Oceanographic research papers</jtitle><date>2008-11-01</date><risdate>2008</risdate><volume>55</volume><issue>11</issue><spage>1456</spage><epage>1473</epage><pages>1456-1473</pages><issn>0967-0637</issn><eissn>1879-0119</eissn><abstract>Protists, and among them the picoeukaryotes (cells<3
μm), have been described as significant contributors to both carbon biomass and production in oligotrophic regions of the oceans. However, protist assemblages remain largely undescribed in pelagic ecosystems and in particular in the Indian Ocean. In the present work, we investigated protists along an eastward transect across the sub-tropical gyre of the Indian Ocean (from South Africa to Australia), with a particular focus on picoeukaryotes. We combined inverted and epifluorescence microscopy, flow cytometry, pigment analysis, denaturing gel gradient electrophoresis (DGGE), 18S rDNA clone libraries, and fluorescent
in situ hybridization (FISH). Overall the picophytoplankton fraction contributed 88% and 90% of total Chl
a at the surface and DCM, respectively, with picoeukaryotes accounting for 38% and 50% of total Chl
a at the surface and DCM. Considering only the Indian South Subtropical Gyre (ISSG) province, we observed greater shifts in the picoeukaryotic assemblage throughout the upper 200
m of the water column than along the ca. 10,000
km cruise track. In terms of taxonomic diversity and contribution of each taxon to the picoeukaryotic community, prasinophytes were well represented at more coastal stations with the genus
Micromonas reaching densities up to 750
cell
mL
−1 in coastal waters and less than 100
cell
mL
−1 at open ocean stations. Haptophytes (56% and 45% of picoeukaryotic pigments at surface and DCM, respectively) and possibly pelagophytes (28% and 40% of picoeukaryotic pigments at surface and DCM, respectively) appeared to be dominant at open ocean stations. Other groups and in particular organisms affiliated to chrysophytes, and to a lesser extent to cryptophytes, appear as clear targets for future qualitative and quantitative studies. Moreover, the occurrence of many sequences related to radiolarians (5% and 27% at surface and DCM, respectively) will require further investigation.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.dsr.2008.06.007</doi><tpages>18</tpages></addata></record> |
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| ispartof | Deep-sea research. Part I, Oceanographic research papers, 2008-11, Vol.55 (11), p.1456-1473 |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Animal and plant ecology Animal, plant and microbial ecology Biological and medical sciences Biological diversity Diversity Eukaryotes Fundamental and applied biological sciences. Psychology Indian Ocean Marine Micromonas Microorganisms Oceanography Oceans Phytoplankton Picoplankton Protist Radiolaria Sea water ecosystems Synecology |
| title | Protistan assemblages across the Indian Ocean, with a specific emphasis on the picoeukaryotes |
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