Variation in predation costs with Chiastocheta egg number on Trollius europaeus: how many seeds to pay for pollination?
1. In obligate plant/seed parasite–pollinator mutualisms, the plant is exclusively pollinated by an insect whose larvae are specific seed predators. Hence, outcomes of the interaction for the plant can vary with the number of eggs laid and the number of seeds eaten per larva. 2. In the work reported...
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| Veröffentlicht in: | Ecological entomology 2001-02, Vol.26 (1), p.56-62 |
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| creator | Jaeger, Nicolas Pompanon, François Després, Laurence |
| description | 1. In obligate plant/seed parasite–pollinator mutualisms, the plant is exclusively pollinated by an insect whose larvae are specific seed predators. Hence, outcomes of the interaction for the plant can vary with the number of eggs laid and the number of seeds eaten per larva.
2. In the work reported here, predation by
Chiastocheta
larvae on seeds of
Trollius europaeus
was analysed as a function of the number of eggs laid on the flower. Flowers with an increasing number of eggs were bagged in three populations and seeds were counted after the end of larval predation, in order to assess whether there was competition among larvae.
3. Seed predation on single‐egg flowers was high and variable (mean per population ranging from 15 to 40% of the developed seeds). Seed predation increased weakly with increasing egg load and was lower than gross seed production (always |
| doi_str_mv | 10.1046/j.1365-2311.2001.00298.x |
| format | Article |
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2. In the work reported here, predation by
Chiastocheta
larvae on seeds of
Trollius europaeus
was analysed as a function of the number of eggs laid on the flower. Flowers with an increasing number of eggs were bagged in three populations and seeds were counted after the end of larval predation, in order to assess whether there was competition among larvae.
3. Seed predation on single‐egg flowers was high and variable (mean per population ranging from 15 to 40% of the developed seeds). Seed predation increased weakly with increasing egg load and was lower than gross seed production (always < 85%) whatever the number of eggs laid. This corresponds to a strong decrease in seed consumption per larva with increasing egg load, i.e. severe larval competition for resources.
4. The results suggest that both interference among
Chiastocheta
larvae and carpel dehiscence may protect
T. europaeus
seeds from total predation. Estimates of seed predation based on egg load observed in 20 natural populations in the French Alps typically ranged from 30 to 60%. The interaction was always beneficial for the plant and there was no risk of total seed destruction by
Chiastocheta
larvae, favouring stability of the mutualism.</description><identifier>ISSN: 0307-6946</identifier><identifier>EISSN: 1365-2311</identifier><identifier>DOI: 10.1046/j.1365-2311.2001.00298.x</identifier><identifier>CODEN: EENTDT</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Science Ltd</publisher><subject>Animal and plant ecology ; Animal, plant and microbial ecology ; Anthomyiidae ; Autoecology ; Biodiversity ; Biodiversity and Ecology ; Biological and medical sciences ; Chiastocheta ; competition ; Ecology, environment ; Environmental Sciences ; Fundamental and applied biological sciences. Psychology ; Life Sciences ; mutualism ; Plants and fungi ; pollination ; seed predation ; Trollius europaeus</subject><ispartof>Ecological entomology, 2001-02, Vol.26 (1), p.56-62</ispartof><rights>2001 INIST-CNRS</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c391t-13b7009038db965c36cc48554c08f2155d43ad61a2e606a12c8dbc791271f3663</citedby><cites>FETCH-LOGICAL-c391t-13b7009038db965c36cc48554c08f2155d43ad61a2e606a12c8dbc791271f3663</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=901845$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/halsde-00295054$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Jaeger, Nicolas</creatorcontrib><creatorcontrib>Pompanon, François</creatorcontrib><creatorcontrib>Després, Laurence</creatorcontrib><title>Variation in predation costs with Chiastocheta egg number on Trollius europaeus: how many seeds to pay for pollination?</title><title>Ecological entomology</title><description>1. In obligate plant/seed parasite–pollinator mutualisms, the plant is exclusively pollinated by an insect whose larvae are specific seed predators. Hence, outcomes of the interaction for the plant can vary with the number of eggs laid and the number of seeds eaten per larva.
2. In the work reported here, predation by
Chiastocheta
larvae on seeds of
Trollius europaeus
was analysed as a function of the number of eggs laid on the flower. Flowers with an increasing number of eggs were bagged in three populations and seeds were counted after the end of larval predation, in order to assess whether there was competition among larvae.
3. Seed predation on single‐egg flowers was high and variable (mean per population ranging from 15 to 40% of the developed seeds). Seed predation increased weakly with increasing egg load and was lower than gross seed production (always < 85%) whatever the number of eggs laid. This corresponds to a strong decrease in seed consumption per larva with increasing egg load, i.e. severe larval competition for resources.
4. The results suggest that both interference among
Chiastocheta
larvae and carpel dehiscence may protect
T. europaeus
seeds from total predation. Estimates of seed predation based on egg load observed in 20 natural populations in the French Alps typically ranged from 30 to 60%. The interaction was always beneficial for the plant and there was no risk of total seed destruction by
Chiastocheta
larvae, favouring stability of the mutualism.</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Anthomyiidae</subject><subject>Autoecology</subject><subject>Biodiversity</subject><subject>Biodiversity and Ecology</subject><subject>Biological and medical sciences</subject><subject>Chiastocheta</subject><subject>competition</subject><subject>Ecology, environment</subject><subject>Environmental Sciences</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Life Sciences</subject><subject>mutualism</subject><subject>Plants and fungi</subject><subject>pollination</subject><subject>seed predation</subject><subject>Trollius europaeus</subject><issn>0307-6946</issn><issn>1365-2311</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNo9kUGP0zAQhSMEEmXhP1hC4kSCx46dhAtaVXQXUcFl2eVmuY6zcUnj4HFo--9JNqueRjPzzXvSmyQhQDOgufy0z4BLkTIOkDFKIaOUVWV2epGsLouXyYpyWqSyyuXr5A3ifgJZJatVcrzXwenofE9cT4Zg66UxHiOSo4stWbdOY_SmtVET-_hI-vGws4FM1F3wXedGJHYMftB2xM-k9Udy0P2ZoLU1kujJoM-k8YEMM9w_6X95m7xqdIf23XO9Sn5tvt6tb9Ptz5tv6-ttangFMQW-KyitKC_rXSWF4dKYvBQiN7RsGAhR51zXEjSzkkoNzEygKSpgBTRcSn6VfFx0W92pIbiDDmfltVO311s1zbC2ak5MUJH_gwn_sOBD8H9Hi1EdHBrbdbq3fkQFJQMmCzaB5QKa4BGDbS7iQNX8GLVXc_5qzl_Nj3myKdVpOn3_7KHR6K4JujcOL_cVhTIXE5UulMNoT5etDn-ULHgh1MOPG8V_bx7u5XdQG_4f2wid2g</recordid><startdate>20010201</startdate><enddate>20010201</enddate><creator>Jaeger, Nicolas</creator><creator>Pompanon, François</creator><creator>Després, Laurence</creator><general>Blackwell Science Ltd</general><general>Blackwell Science</general><general>Wiley</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7SS</scope><scope>C1K</scope><scope>1XC</scope></search><sort><creationdate>20010201</creationdate><title>Variation in predation costs with Chiastocheta egg number on Trollius europaeus: how many seeds to pay for pollination?</title><author>Jaeger, Nicolas ; Pompanon, François ; Després, Laurence</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c391t-13b7009038db965c36cc48554c08f2155d43ad61a2e606a12c8dbc791271f3663</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Anthomyiidae</topic><topic>Autoecology</topic><topic>Biodiversity</topic><topic>Biodiversity and Ecology</topic><topic>Biological and medical sciences</topic><topic>Chiastocheta</topic><topic>competition</topic><topic>Ecology, environment</topic><topic>Environmental Sciences</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Life Sciences</topic><topic>mutualism</topic><topic>Plants and fungi</topic><topic>pollination</topic><topic>seed predation</topic><topic>Trollius europaeus</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jaeger, Nicolas</creatorcontrib><creatorcontrib>Pompanon, François</creatorcontrib><creatorcontrib>Després, Laurence</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Ecological entomology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jaeger, Nicolas</au><au>Pompanon, François</au><au>Després, Laurence</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Variation in predation costs with Chiastocheta egg number on Trollius europaeus: how many seeds to pay for pollination?</atitle><jtitle>Ecological entomology</jtitle><date>2001-02-01</date><risdate>2001</risdate><volume>26</volume><issue>1</issue><spage>56</spage><epage>62</epage><pages>56-62</pages><issn>0307-6946</issn><eissn>1365-2311</eissn><coden>EENTDT</coden><abstract>1. In obligate plant/seed parasite–pollinator mutualisms, the plant is exclusively pollinated by an insect whose larvae are specific seed predators. Hence, outcomes of the interaction for the plant can vary with the number of eggs laid and the number of seeds eaten per larva.
2. In the work reported here, predation by
Chiastocheta
larvae on seeds of
Trollius europaeus
was analysed as a function of the number of eggs laid on the flower. Flowers with an increasing number of eggs were bagged in three populations and seeds were counted after the end of larval predation, in order to assess whether there was competition among larvae.
3. Seed predation on single‐egg flowers was high and variable (mean per population ranging from 15 to 40% of the developed seeds). Seed predation increased weakly with increasing egg load and was lower than gross seed production (always < 85%) whatever the number of eggs laid. This corresponds to a strong decrease in seed consumption per larva with increasing egg load, i.e. severe larval competition for resources.
4. The results suggest that both interference among
Chiastocheta
larvae and carpel dehiscence may protect
T. europaeus
seeds from total predation. Estimates of seed predation based on egg load observed in 20 natural populations in the French Alps typically ranged from 30 to 60%. The interaction was always beneficial for the plant and there was no risk of total seed destruction by
Chiastocheta
larvae, favouring stability of the mutualism.</abstract><cop>Oxford, UK</cop><pub>Blackwell Science Ltd</pub><doi>10.1046/j.1365-2311.2001.00298.x</doi><tpages>7</tpages></addata></record> |
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| identifier | ISSN: 0307-6946 |
| ispartof | Ecological entomology, 2001-02, Vol.26 (1), p.56-62 |
| issn | 0307-6946 1365-2311 |
| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Animal and plant ecology Animal, plant and microbial ecology Anthomyiidae Autoecology Biodiversity Biodiversity and Ecology Biological and medical sciences Chiastocheta competition Ecology, environment Environmental Sciences Fundamental and applied biological sciences. Psychology Life Sciences mutualism Plants and fungi pollination seed predation Trollius europaeus |
| title | Variation in predation costs with Chiastocheta egg number on Trollius europaeus: how many seeds to pay for pollination? |
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