Diet of the Antarctic krill ( Euphausia superba Dana) : I. Comparisons of grazing on Phaeocystis antarctica (Karsten) and Thalassiosira antarctica (Comber)
Diatoms and prymnesiophytes are major constituents of spring phytoplankton blooms in the Antarctic. While diatoms are known to be well grazed by krill, the role of prymnesiophytes in the krill's diet is unknown. Clearance and ingestion rates of Euphausia superba grazing on three size classes of...
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| Veröffentlicht in: | Journal of experimental marine biology and ecology 2003-01, Vol.283 (1), p.79-95 |
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| creator | Haberman, Karen L Quetin, Langdon B Ross, Robin M |
| description | Diatoms and prymnesiophytes are major constituents of spring phytoplankton blooms in the Antarctic. While diatoms are known to be well grazed by krill, the role of prymnesiophytes in the krill's diet is unknown. Clearance and ingestion rates of
Euphausia superba grazing on three size classes of
Phaeocystis antarctica were compared to rates on the diatom
Thalassiosira antarctica in parallel, unialgal experiments. Clearance rates were calculated from disappearance of chlorophyll a during grazing, and converted to carbon and nitrogen ingestion rates based on elemental (CHN) analysis of phytoplankton cultures. Clearance and ingestion rates of krill on small
P. antarctica colonies (50–100 μm) were similar to rates on
T. antarctica, whereas rates on medium
P. antarctica colonies (100–500 μm) and single cell
P. antarctica were significantly lower than for
T. antarctica. Overall, clearance rates on
P. antarctica decreased with increasing colony size. Clearance rates on
T. antarctica were variable, and correlated with degree of chain formation. These results suggest that
E. superba effectively grazes small colonies of
P. antarctica, but not larger colonies or single cells. |
| doi_str_mv | 10.1016/S0022-0981(02)00466-5 |
| format | Article |
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Euphausia superba grazing on three size classes of
Phaeocystis antarctica were compared to rates on the diatom
Thalassiosira antarctica in parallel, unialgal experiments. Clearance rates were calculated from disappearance of chlorophyll a during grazing, and converted to carbon and nitrogen ingestion rates based on elemental (CHN) analysis of phytoplankton cultures. Clearance and ingestion rates of krill on small
P. antarctica colonies (50–100 μm) were similar to rates on
T. antarctica, whereas rates on medium
P. antarctica colonies (100–500 μm) and single cell
P. antarctica were significantly lower than for
T. antarctica. Overall, clearance rates on
P. antarctica decreased with increasing colony size. Clearance rates on
T. antarctica were variable, and correlated with degree of chain formation. These results suggest that
E. superba effectively grazes small colonies of
P. antarctica, but not larger colonies or single cells.</description><identifier>ISSN: 0022-0981</identifier><identifier>EISSN: 1879-1697</identifier><identifier>DOI: 10.1016/S0022-0981(02)00466-5</identifier><identifier>CODEN: JEMBAM</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Animal and plant ecology ; Animal, plant and microbial ecology ; Animals ; Antarctic krill ; Autoecology ; Bacillariophyceae ; Biological and medical sciences ; Diet ; Euphausia superba ; Fundamental and applied biological sciences. Psychology ; Grazing ; Marine ; Phaeocystis antarctica ; Phytoplankton ; Protozoa. Invertebrata ; Prymnesiophyta ; Thalassiosira antarctica</subject><ispartof>Journal of experimental marine biology and ecology, 2003-01, Vol.283 (1), p.79-95</ispartof><rights>2003</rights><rights>2003 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c322t-fa1f9d775c6fb841f15f0ef3dd91b5c7e519433d2912f101ba2352e718d105f3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0022-0981(02)00466-5$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14410209$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Haberman, Karen L</creatorcontrib><creatorcontrib>Quetin, Langdon B</creatorcontrib><creatorcontrib>Ross, Robin M</creatorcontrib><title>Diet of the Antarctic krill ( Euphausia superba Dana) : I. Comparisons of grazing on Phaeocystis antarctica (Karsten) and Thalassiosira antarctica (Comber)</title><title>Journal of experimental marine biology and ecology</title><description>Diatoms and prymnesiophytes are major constituents of spring phytoplankton blooms in the Antarctic. While diatoms are known to be well grazed by krill, the role of prymnesiophytes in the krill's diet is unknown. Clearance and ingestion rates of
Euphausia superba grazing on three size classes of
Phaeocystis antarctica were compared to rates on the diatom
Thalassiosira antarctica in parallel, unialgal experiments. Clearance rates were calculated from disappearance of chlorophyll a during grazing, and converted to carbon and nitrogen ingestion rates based on elemental (CHN) analysis of phytoplankton cultures. Clearance and ingestion rates of krill on small
P. antarctica colonies (50–100 μm) were similar to rates on
T. antarctica, whereas rates on medium
P. antarctica colonies (100–500 μm) and single cell
P. antarctica were significantly lower than for
T. antarctica. Overall, clearance rates on
P. antarctica decreased with increasing colony size. Clearance rates on
T. antarctica were variable, and correlated with degree of chain formation. These results suggest that
E. superba effectively grazes small colonies of
P. antarctica, but not larger colonies or single cells.</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Animals</subject><subject>Antarctic krill</subject><subject>Autoecology</subject><subject>Bacillariophyceae</subject><subject>Biological and medical sciences</subject><subject>Diet</subject><subject>Euphausia superba</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Grazing</subject><subject>Marine</subject><subject>Phaeocystis antarctica</subject><subject>Phytoplankton</subject><subject>Protozoa. Invertebrata</subject><subject>Prymnesiophyta</subject><subject>Thalassiosira antarctica</subject><issn>0022-0981</issn><issn>1879-1697</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNpVkV1rFDEUhoMouFZ_gpAbZfdiak5mMh_eSNnWtlhQcO_DmUzSjc4mY06mUP-Kf9ZZWwWvXjg8PBzel7HXIE5BQP3uqxBSFqJrYS3kRoiqrgv1hK2gbboC6q55ylb_kOfsBdE3IQQoWa_Yr3NvM4-O573lZyFjMtkb_j35ceRrfjFPe5zJI6d5sqlHfo4BN_w9vz7l23iYMHmKgY6G24Q_fbjlMfAve7TR3FP2xPGvFPn6EybKNmyW48B3exyRyEfyCf_DFnFv0-Yle-ZwJPvqMU_Y7uPFbntV3Hy-vN6e3RSmlDIXDsF1Q9MoU7u-rcCBcsK6chg66JVprIKuKstBdiDdUliPslTSNtAOIJQrT9jbB-2U4o_ZUtYHT8aOIwYbZ9LQ1lW59LyAbx5BJIOjSxiMJz0lf8B0r6GqQEjRLdyHB84uT995mzQZb4Oxg0_WZD1Er0Ho43b6z3b6OIwWSx6306r8DbVsjXU</recordid><startdate>20030115</startdate><enddate>20030115</enddate><creator>Haberman, Karen L</creator><creator>Quetin, Langdon B</creator><creator>Ross, Robin M</creator><general>Elsevier B.V</general><general>Elsevier Science</general><scope>IQODW</scope><scope>7SN</scope><scope>7TN</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>20030115</creationdate><title>Diet of the Antarctic krill ( Euphausia superba Dana) : I. Comparisons of grazing on Phaeocystis antarctica (Karsten) and Thalassiosira antarctica (Comber)</title><author>Haberman, Karen L ; Quetin, Langdon B ; Ross, Robin M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c322t-fa1f9d775c6fb841f15f0ef3dd91b5c7e519433d2912f101ba2352e718d105f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Animals</topic><topic>Antarctic krill</topic><topic>Autoecology</topic><topic>Bacillariophyceae</topic><topic>Biological and medical sciences</topic><topic>Diet</topic><topic>Euphausia superba</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Grazing</topic><topic>Marine</topic><topic>Phaeocystis antarctica</topic><topic>Phytoplankton</topic><topic>Protozoa. Invertebrata</topic><topic>Prymnesiophyta</topic><topic>Thalassiosira antarctica</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Haberman, Karen L</creatorcontrib><creatorcontrib>Quetin, Langdon B</creatorcontrib><creatorcontrib>Ross, Robin M</creatorcontrib><collection>Pascal-Francis</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) Professional</collection><jtitle>Journal of experimental marine biology and ecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Haberman, Karen L</au><au>Quetin, Langdon B</au><au>Ross, Robin M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Diet of the Antarctic krill ( Euphausia superba Dana) : I. Comparisons of grazing on Phaeocystis antarctica (Karsten) and Thalassiosira antarctica (Comber)</atitle><jtitle>Journal of experimental marine biology and ecology</jtitle><date>2003-01-15</date><risdate>2003</risdate><volume>283</volume><issue>1</issue><spage>79</spage><epage>95</epage><pages>79-95</pages><issn>0022-0981</issn><eissn>1879-1697</eissn><coden>JEMBAM</coden><abstract>Diatoms and prymnesiophytes are major constituents of spring phytoplankton blooms in the Antarctic. While diatoms are known to be well grazed by krill, the role of prymnesiophytes in the krill's diet is unknown. Clearance and ingestion rates of
Euphausia superba grazing on three size classes of
Phaeocystis antarctica were compared to rates on the diatom
Thalassiosira antarctica in parallel, unialgal experiments. Clearance rates were calculated from disappearance of chlorophyll a during grazing, and converted to carbon and nitrogen ingestion rates based on elemental (CHN) analysis of phytoplankton cultures. Clearance and ingestion rates of krill on small
P. antarctica colonies (50–100 μm) were similar to rates on
T. antarctica, whereas rates on medium
P. antarctica colonies (100–500 μm) and single cell
P. antarctica were significantly lower than for
T. antarctica. Overall, clearance rates on
P. antarctica decreased with increasing colony size. Clearance rates on
T. antarctica were variable, and correlated with degree of chain formation. These results suggest that
E. superba effectively grazes small colonies of
P. antarctica, but not larger colonies or single cells.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/S0022-0981(02)00466-5</doi><tpages>17</tpages></addata></record> |
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| identifier | ISSN: 0022-0981 |
| ispartof | Journal of experimental marine biology and ecology, 2003-01, Vol.283 (1), p.79-95 |
| issn | 0022-0981 1879-1697 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_18643016 |
| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Animal and plant ecology Animal, plant and microbial ecology Animals Antarctic krill Autoecology Bacillariophyceae Biological and medical sciences Diet Euphausia superba Fundamental and applied biological sciences. Psychology Grazing Marine Phaeocystis antarctica Phytoplankton Protozoa. Invertebrata Prymnesiophyta Thalassiosira antarctica |
| title | Diet of the Antarctic krill ( Euphausia superba Dana) : I. Comparisons of grazing on Phaeocystis antarctica (Karsten) and Thalassiosira antarctica (Comber) |
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