Body sizes of hosts and parasitoids in individual feeding relationships
In a natural community of 49 species (12 species of aphids and 37 species of their parasitoids), body lengths of 2,151 parasitoid individuals were, to an excellent approximation, related to the body lengths of their individual aphid hosts by a power law with an exponent close to 3/4. Two alternative...
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| Veröffentlicht in: | Proceedings of the National Academy of Sciences - PNAS 2005-01, Vol.102 (3), p.684-689 |
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| creator | Cohen, J.E Jonsson, T Muller, C.B Godfray, H.C.J Savage, V.M |
| description | In a natural community of 49 species (12 species of aphids and 37 species of their parasitoids), body lengths of 2,151 parasitoid individuals were, to an excellent approximation, related to the body lengths of their individual aphid hosts by a power law with an exponent close to 3/4. Two alternative models predict this exponent. One is based on surface area to volume relationships. The other is based on recent developments in metabolic ecology. Both models require a changing ratio (in both host and parasitoid) of length to diameter with increasing body length. These changing ratios are manifested differently in the two models and result in testably different predictions for the scaling of body form with increasing size. The estimated exponent of 3/4 for the relationship between individual host body size and individual parasitoid body size degrades to an exponent of nearly 1/2, and the scatter in the relationship between aphid and parasitoid body length is substantially increased, if the average length of a parasitoid species is examined as a function of the average length of its aphid host species instead of using measurements of individuals. |
| doi_str_mv | 10.1073/pnas.0408780102 |
| format | Article |
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Two alternative models predict this exponent. One is based on surface area to volume relationships. The other is based on recent developments in metabolic ecology. Both models require a changing ratio (in both host and parasitoid) of length to diameter with increasing body length. These changing ratios are manifested differently in the two models and result in testably different predictions for the scaling of body form with increasing size. The estimated exponent of 3/4 for the relationship between individual host body size and individual parasitoid body size degrades to an exponent of nearly 1/2, and the scatter in the relationship between aphid and parasitoid body length is substantially increased, if the average length of a parasitoid species is examined as a function of the average length of its aphid host species instead of using measurements of individuals.</description><identifier>ISSN: 0027-8424</identifier><identifier>ISSN: 1091-6490</identifier><identifier>EISSN: 1091-6490</identifier><identifier>DOI: 10.1073/pnas.0408780102</identifier><identifier>PMID: 15647346</identifier><language>eng</language><publisher>United States: National Academy of Sciences</publisher><subject>allometry ; Animals ; Aphidoidea ; Aphids - parasitology ; Biological Sciences ; Body length ; Body Size ; Ecology ; Feeding Behavior ; Host-Parasite Interactions ; host-parasite relationships ; Hymenoptera ; Hyperparasites ; Hyperparasitoids ; Insect larvae ; insect pests ; Insects ; Larval development ; length ; mathematics and statistics ; Metabolism ; Models, Biological ; Mummies ; Natural sciences ; Naturvetenskap ; Parasite hosts ; Parasites ; Parasitoids ; Physical growth ; prediction ; Species</subject><ispartof>Proceedings of the National Academy of Sciences - PNAS, 2005-01, Vol.102 (3), p.684-689</ispartof><rights>Copyright 1993/2005 The National Academy of Sciences of the United States of America</rights><rights>Copyright National Academy of Sciences Jan 18, 2005</rights><rights>Copyright © 2005, The National Academy of Sciences 2005</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c648t-a39f6332ead8025c3d9dfdd73abc2a8458b85e2e8a1163e4f31aad04cb6c1b343</citedby><cites>FETCH-LOGICAL-c648t-a39f6332ead8025c3d9dfdd73abc2a8458b85e2e8a1163e4f31aad04cb6c1b343</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://www.pnas.org/content/102/3.cover.gif</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/3374309$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/3374309$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>230,314,727,780,784,803,885,27924,27925,53791,53793,58017,58250</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15647346$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-1579$$DView record from Swedish Publication Index$$Hfree_for_read</backlink></links><search><creatorcontrib>Cohen, J.E</creatorcontrib><creatorcontrib>Jonsson, T</creatorcontrib><creatorcontrib>Muller, C.B</creatorcontrib><creatorcontrib>Godfray, H.C.J</creatorcontrib><creatorcontrib>Savage, V.M</creatorcontrib><title>Body sizes of hosts and parasitoids in individual feeding relationships</title><title>Proceedings of the National Academy of Sciences - PNAS</title><addtitle>Proc Natl Acad Sci U S A</addtitle><description>In a natural community of 49 species (12 species of aphids and 37 species of their parasitoids), body lengths of 2,151 parasitoid individuals were, to an excellent approximation, related to the body lengths of their individual aphid hosts by a power law with an exponent close to 3/4. Two alternative models predict this exponent. One is based on surface area to volume relationships. The other is based on recent developments in metabolic ecology. Both models require a changing ratio (in both host and parasitoid) of length to diameter with increasing body length. These changing ratios are manifested differently in the two models and result in testably different predictions for the scaling of body form with increasing size. The estimated exponent of 3/4 for the relationship between individual host body size and individual parasitoid body size degrades to an exponent of nearly 1/2, and the scatter in the relationship between aphid and parasitoid body length is substantially increased, if the average length of a parasitoid species is examined as a function of the average length of its aphid host species instead of using measurements of individuals.</description><subject>allometry</subject><subject>Animals</subject><subject>Aphidoidea</subject><subject>Aphids - parasitology</subject><subject>Biological Sciences</subject><subject>Body length</subject><subject>Body Size</subject><subject>Ecology</subject><subject>Feeding Behavior</subject><subject>Host-Parasite Interactions</subject><subject>host-parasite relationships</subject><subject>Hymenoptera</subject><subject>Hyperparasites</subject><subject>Hyperparasitoids</subject><subject>Insect larvae</subject><subject>insect pests</subject><subject>Insects</subject><subject>Larval development</subject><subject>length</subject><subject>mathematics and statistics</subject><subject>Metabolism</subject><subject>Models, Biological</subject><subject>Mummies</subject><subject>Natural sciences</subject><subject>Naturvetenskap</subject><subject>Parasite hosts</subject><subject>Parasites</subject><subject>Parasitoids</subject><subject>Physical growth</subject><subject>prediction</subject><subject>Species</subject><issn>0027-8424</issn><issn>1091-6490</issn><issn>1091-6490</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkktv1DAUhSMEokNhzYZHxIINmtbO9SsLFqVAQarEAsrWcmJnxqNMHHyTPvj1OMqo0yIkJEte3O9c-ZzjLHtOyRElEo77zuARYURJRSgpHmQLSkq6FKwkD7MFIYVcKlawg-wJ4oYQUnJFHmcHlAsmgYlFdvYh2Jsc_W-HeWjydcABc9PZvDfRoB-Ct5j7Lh3rL70dTZs3zlnfrfLoWjP40OHa9_g0e9SYFt2z3X2YXXz-9OP0y_L829nX05PzZS2YGpYGykYAFM5YRQpegy1tY60EU9WFUYyrSnFXOGUoFeBYA9QYS1hdiZpWwOAwezfvxSvXj5Xuo9-aeKOD8fqj_3miQ1zptUdNuSwT_X6mE7p1tnbdEE17T3R_0vm1XoVLzRnnkif9250-hl-jw0FvPdaubU3nwohaSJCcC_VfkEoFKYAJfPMXuAlj7FJkuiAUOBF8go5nqI4BMbrm9sWU6Kl3PfWu970nxau7Rvf8rugEvNwBk3K_rtCghWJ3DPxzrpuxbQd3PSTwxQxucAjxlgSQDMiU-Ot53JigzSqmJi6-T87S30uFUIA_-HvUuA</recordid><startdate>20050118</startdate><enddate>20050118</enddate><creator>Cohen, J.E</creator><creator>Jonsson, T</creator><creator>Muller, C.B</creator><creator>Godfray, H.C.J</creator><creator>Savage, V.M</creator><general>National Academy of Sciences</general><general>National Acad Sciences</general><scope>FBQ</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>7QG</scope><scope>7QL</scope><scope>7QP</scope><scope>7QR</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TK</scope><scope>7TM</scope><scope>7TO</scope><scope>7U9</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>H94</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope><scope>5PM</scope><scope>ADTPV</scope><scope>AOWAS</scope><scope>DF6</scope></search><sort><creationdate>20050118</creationdate><title>Body sizes of hosts and parasitoids in individual feeding relationships</title><author>Cohen, J.E ; 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Two alternative models predict this exponent. One is based on surface area to volume relationships. The other is based on recent developments in metabolic ecology. Both models require a changing ratio (in both host and parasitoid) of length to diameter with increasing body length. These changing ratios are manifested differently in the two models and result in testably different predictions for the scaling of body form with increasing size. The estimated exponent of 3/4 for the relationship between individual host body size and individual parasitoid body size degrades to an exponent of nearly 1/2, and the scatter in the relationship between aphid and parasitoid body length is substantially increased, if the average length of a parasitoid species is examined as a function of the average length of its aphid host species instead of using measurements of individuals.</abstract><cop>United States</cop><pub>National Academy of Sciences</pub><pmid>15647346</pmid><doi>10.1073/pnas.0408780102</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | allometry Animals Aphidoidea Aphids - parasitology Biological Sciences Body length Body Size Ecology Feeding Behavior Host-Parasite Interactions host-parasite relationships Hymenoptera Hyperparasites Hyperparasitoids Insect larvae insect pests Insects Larval development length mathematics and statistics Metabolism Models, Biological Mummies Natural sciences Naturvetenskap Parasite hosts Parasites Parasitoids Physical growth prediction Species |
| title | Body sizes of hosts and parasitoids in individual feeding relationships |
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