Higher Pollinator Effectiveness by Specialist than Generalist Flower-Visitors of Unspecialized Knautia arvensis (Dipsacaceae)
A critical issue in pollination ecology is the evolution of generalist pollination systems, and under which conditions floral specializations evolve from these. The gynodioecious herb Knautia arvensis (Dipsacaceae) exhibits a generalized pollination system, but is visited by both generalist and spec...
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| Veröffentlicht in: | Oecologia 2005-12, Vol.146 (3), p.394-403 |
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| description | A critical issue in pollination ecology is the evolution of generalist pollination systems, and under which conditions floral specializations evolve from these. The gynodioecious herb Knautia arvensis (Dipsacaceae) exhibits a generalized pollination system, but is visited by both generalist and specialist flower-visitors. The present study tested pollinator effectiveness and pollinator importance of the pollen specialist solitary bee Andrena hattorfiana (Andrenidae) vs. the generalist flower-visitors to K. arvensis on the island of Öland, SE Sweden. Females of the specialist bee removed more pollen per inflorescence-visit than the major groups of generalist visitors such as bumblebees and flies. They also deposited more pollen per inflorescence-visit than any of the generalist visitor groups. The females have a preference for pollen-presenting vs. stigma-presenting inflorescences, a pattern shared with most of the generalist flower-visitors. Females of the specialist exert such a strong preference that they, despite their great pollinator effectiveness, make modest contribution to pollen transfer in K. arvensis. The females of A. hattorfiana accounted for 14.2% of the overall visits and 5.8% of the total pollination, the rest being performed by generalist visitors and males of A. hattorfiana. This study shows that pollinator effectiveness of a specialist can be superior while generalist flower-visitors select floral characters towards generalization through their greater contribution to overall pollen flow. |
| doi_str_mv | 10.1007/s00442-005-0217-y |
| format | Article |
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The gynodioecious herb Knautia arvensis (Dipsacaceae) exhibits a generalized pollination system, but is visited by both generalist and specialist flower-visitors. The present study tested pollinator effectiveness and pollinator importance of the pollen specialist solitary bee Andrena hattorfiana (Andrenidae) vs. the generalist flower-visitors to K. arvensis on the island of Öland, SE Sweden. Females of the specialist bee removed more pollen per inflorescence-visit than the major groups of generalist visitors such as bumblebees and flies. They also deposited more pollen per inflorescence-visit than any of the generalist visitor groups. The females have a preference for pollen-presenting vs. stigma-presenting inflorescences, a pattern shared with most of the generalist flower-visitors. Females of the specialist exert such a strong preference that they, despite their great pollinator effectiveness, make modest contribution to pollen transfer in K. arvensis. The females of A. hattorfiana accounted for 14.2% of the overall visits and 5.8% of the total pollination, the rest being performed by generalist visitors and males of A. hattorfiana. This study shows that pollinator effectiveness of a specialist can be superior while generalist flower-visitors select floral characters towards generalization through their greater contribution to overall pollen flow.</description><identifier>ISSN: 0029-8549</identifier><identifier>EISSN: 1432-1939</identifier><identifier>DOI: 10.1007/s00442-005-0217-y</identifier><identifier>PMID: 16133196</identifier><identifier>CODEN: OECOBX</identifier><language>eng</language><publisher>Berlin: Springer</publisher><subject>Andrena ; Andrenidae ; Animal and plant ecology ; Animal, plant and microbial ecology ; Animals ; Anthers ; Bees - physiology ; Biological and medical sciences ; Bumblebees ; Dipsacaceae ; Dipsacaceae - physiology ; Ecosystem ; Feeding Behavior - physiology ; Female animals ; Flowers ; Flowers - physiology ; Fundamental and applied biological sciences. Psychology ; General aspects ; Inflorescences ; Insect pollination ; Knautia arvensis ; Plant Animal Interactions ; Plant reproduction ; Plants ; Pollen ; Pollen - physiology ; Pollinating insects ; Pollination ; Pollinators</subject><ispartof>Oecologia, 2005-12, Vol.146 (3), p.394-403</ispartof><rights>Copyright 2005 Springer-Verlag Berlin Heidelberg</rights><rights>2006 INIST-CNRS</rights><rights>Springer-Verlag 2005</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c390t-78100fa673b1678a6b7350f9a51636607e96feff018904156f4b0e25b1597d513</citedby><cites>FETCH-LOGICAL-c390t-78100fa673b1678a6b7350f9a51636607e96feff018904156f4b0e25b1597d513</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/20062514$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/20062514$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,27924,27925,58017,58250</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=17481513$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16133196$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Larsson, Magnus</creatorcontrib><title>Higher Pollinator Effectiveness by Specialist than Generalist Flower-Visitors of Unspecialized Knautia arvensis (Dipsacaceae)</title><title>Oecologia</title><addtitle>Oecologia</addtitle><description>A critical issue in pollination ecology is the evolution of generalist pollination systems, and under which conditions floral specializations evolve from these. The gynodioecious herb Knautia arvensis (Dipsacaceae) exhibits a generalized pollination system, but is visited by both generalist and specialist flower-visitors. The present study tested pollinator effectiveness and pollinator importance of the pollen specialist solitary bee Andrena hattorfiana (Andrenidae) vs. the generalist flower-visitors to K. arvensis on the island of Öland, SE Sweden. Females of the specialist bee removed more pollen per inflorescence-visit than the major groups of generalist visitors such as bumblebees and flies. They also deposited more pollen per inflorescence-visit than any of the generalist visitor groups. The females have a preference for pollen-presenting vs. stigma-presenting inflorescences, a pattern shared with most of the generalist flower-visitors. Females of the specialist exert such a strong preference that they, despite their great pollinator effectiveness, make modest contribution to pollen transfer in K. arvensis. The females of A. hattorfiana accounted for 14.2% of the overall visits and 5.8% of the total pollination, the rest being performed by generalist visitors and males of A. hattorfiana. This study shows that pollinator effectiveness of a specialist can be superior while generalist flower-visitors select floral characters towards generalization through their greater contribution to overall pollen flow.</description><subject>Andrena</subject><subject>Andrenidae</subject><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Animals</subject><subject>Anthers</subject><subject>Bees - physiology</subject><subject>Biological and medical sciences</subject><subject>Bumblebees</subject><subject>Dipsacaceae</subject><subject>Dipsacaceae - physiology</subject><subject>Ecosystem</subject><subject>Feeding Behavior - physiology</subject><subject>Female animals</subject><subject>Flowers</subject><subject>Flowers - physiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>Inflorescences</subject><subject>Insect pollination</subject><subject>Knautia arvensis</subject><subject>Plant Animal Interactions</subject><subject>Plant reproduction</subject><subject>Plants</subject><subject>Pollen</subject><subject>Pollen - physiology</subject><subject>Pollinating insects</subject><subject>Pollination</subject><subject>Pollinators</subject><issn>0029-8549</issn><issn>1432-1939</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNqFkk2L1EAQhoMo7uzqD_CgNMKKHqJV6a_0Udb9EBcUdL02nUy320MmGbsSZQT_uz0kuODFU9PUUy-8PFUUTxBeI4B-QwBCVCWALKFCXe7vFSsUvCrRcHO_WAFUpqylMEfFMdEGAAVK-bA4QoWco1Gr4vdV_HbrE_s0dF3s3Tgkdh6Cb8f4w_eeiDV79nnn2-i6SCMbb13PLvMkzf-LbvjpU_k1UsyrxIbAbnpa-F9-zT70bhqjYy7lPIrEXr6LO3Kta73zrx4VD4LryD9e3pPi5uL8y9lVef3x8v3Z2-uy5QbGUte5bnBK8waVrp1qNJcQjJOouFKgvVHBhwBYG8gVVRAN-Eo2KI1eS-QnxYs5d5eG75On0W4jtb7rXO-HiayqtQJTy_-CqNEIDSKDz_8BN8OU-lzC1hUI4BU_pOEMtWkgSj7YXYpbl_YWwR4M2tmgzQbtwaDd551nS_DUbP36bmNRloHTBXDUui4k17eR7jgtasyVM_d05jaU1fydVwCqkvlK_gANKKz2</recordid><startdate>200512</startdate><enddate>200512</enddate><creator>Larsson, Magnus</creator><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7SN</scope><scope>7SS</scope><scope>7T7</scope><scope>7TN</scope><scope>7U9</scope><scope>7X7</scope><scope>7XB</scope><scope>88A</scope><scope>88E</scope><scope>8AO</scope><scope>8FD</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>H95</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>L.G</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>P64</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>RC3</scope><scope>7X8</scope></search><sort><creationdate>200512</creationdate><title>Higher Pollinator Effectiveness by Specialist than Generalist Flower-Visitors of Unspecialized Knautia arvensis (Dipsacaceae)</title><author>Larsson, Magnus</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c390t-78100fa673b1678a6b7350f9a51636607e96feff018904156f4b0e25b1597d513</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Andrena</topic><topic>Andrenidae</topic><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Animals</topic><topic>Anthers</topic><topic>Bees - physiology</topic><topic>Biological and medical sciences</topic><topic>Bumblebees</topic><topic>Dipsacaceae</topic><topic>Dipsacaceae - physiology</topic><topic>Ecosystem</topic><topic>Feeding Behavior - physiology</topic><topic>Female animals</topic><topic>Flowers</topic><topic>Flowers - physiology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General aspects</topic><topic>Inflorescences</topic><topic>Insect pollination</topic><topic>Knautia arvensis</topic><topic>Plant Animal Interactions</topic><topic>Plant reproduction</topic><topic>Plants</topic><topic>Pollen</topic><topic>Pollen - physiology</topic><topic>Pollinating insects</topic><topic>Pollination</topic><topic>Pollinators</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Larsson, Magnus</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Animal Behavior Abstracts</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Oceanic Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Biological Science Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biological Science Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Oecologia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Larsson, Magnus</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Higher Pollinator Effectiveness by Specialist than Generalist Flower-Visitors of Unspecialized Knautia arvensis (Dipsacaceae)</atitle><jtitle>Oecologia</jtitle><addtitle>Oecologia</addtitle><date>2005-12</date><risdate>2005</risdate><volume>146</volume><issue>3</issue><spage>394</spage><epage>403</epage><pages>394-403</pages><issn>0029-8549</issn><eissn>1432-1939</eissn><coden>OECOBX</coden><abstract>A critical issue in pollination ecology is the evolution of generalist pollination systems, and under which conditions floral specializations evolve from these. The gynodioecious herb Knautia arvensis (Dipsacaceae) exhibits a generalized pollination system, but is visited by both generalist and specialist flower-visitors. The present study tested pollinator effectiveness and pollinator importance of the pollen specialist solitary bee Andrena hattorfiana (Andrenidae) vs. the generalist flower-visitors to K. arvensis on the island of Öland, SE Sweden. Females of the specialist bee removed more pollen per inflorescence-visit than the major groups of generalist visitors such as bumblebees and flies. They also deposited more pollen per inflorescence-visit than any of the generalist visitor groups. The females have a preference for pollen-presenting vs. stigma-presenting inflorescences, a pattern shared with most of the generalist flower-visitors. Females of the specialist exert such a strong preference that they, despite their great pollinator effectiveness, make modest contribution to pollen transfer in K. arvensis. The females of A. hattorfiana accounted for 14.2% of the overall visits and 5.8% of the total pollination, the rest being performed by generalist visitors and males of A. hattorfiana. This study shows that pollinator effectiveness of a specialist can be superior while generalist flower-visitors select floral characters towards generalization through their greater contribution to overall pollen flow.</abstract><cop>Berlin</cop><pub>Springer</pub><pmid>16133196</pmid><doi>10.1007/s00442-005-0217-y</doi><tpages>10</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Oecologia, 2005-12, Vol.146 (3), p.394-403 |
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| source | MEDLINE; JSTOR Archive Collection A-Z Listing; SpringerLink Journals - AutoHoldings |
| subjects | Andrena Andrenidae Animal and plant ecology Animal, plant and microbial ecology Animals Anthers Bees - physiology Biological and medical sciences Bumblebees Dipsacaceae Dipsacaceae - physiology Ecosystem Feeding Behavior - physiology Female animals Flowers Flowers - physiology Fundamental and applied biological sciences. Psychology General aspects Inflorescences Insect pollination Knautia arvensis Plant Animal Interactions Plant reproduction Plants Pollen Pollen - physiology Pollinating insects Pollination Pollinators |
| title | Higher Pollinator Effectiveness by Specialist than Generalist Flower-Visitors of Unspecialized Knautia arvensis (Dipsacaceae) |
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