Dispersal‐Dependent Oviposition and the Aggregation of Parasitism

The prediction that parasitoid foraging effort should increase with distance traversed to reach or to locate hosts has had little experimental attention. Consistent with a number of models of foraging behavior, we found that the per capita number of ovipositions by the minute fairyfly‐egg parasitoid...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:The American naturalist 1999-07, Vol.154 (1), p.23-36
Hauptverfasser: Cronin, James T., Strong, Donald R.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 36
container_issue 1
container_start_page 23
container_title The American naturalist
container_volume 154
creator Cronin, James T.
Strong, Donald R.
description The prediction that parasitoid foraging effort should increase with distance traversed to reach or to locate hosts has had little experimental attention. Consistent with a number of models of foraging behavior, we found that the per capita number of ovipositions by the minute fairyfly‐egg parasitoidAnagrus sophiaeincreased significantly with dispersal distance to planthopper hosts in the field in experimental patches of many host eggs. In large continuous stands of cordgrass host plants, after dispersal of decimeters or less, female wasps laid approximately 18% of their average of 18.6 eggs. After dispersal to plants isolated 10 m from other cordgrass, they laid approximately 84%, and they laid virtually all of their eggs after dispersal of 250 m to experimental floating islands of cordgrass. The increased oviposition following dispersal tripled the CV2index of aggregation of parasitism to a level theoretically sufficient to promote locally stable parasitoid‐host dynamics in isolated patches. At the same time, the change in wasp behavior did not affect the relationship between parasitism and host density, which was consistently density independent. Our results suggest that increased foraging effort with distance traversed can counter Allee effects in colonization and increase spatial spread of populations of natural enemies.
doi_str_mv 10.1086/303221
format Article
fullrecord <record><control><sourceid>jstor_proqu</sourceid><recordid>TN_cdi_proquest_journals_198622648</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><jstor_id>10.1086/303221</jstor_id><sourcerecordid>10.1086/303221</sourcerecordid><originalsourceid>FETCH-LOGICAL-c447t-2417c04bb2a0521e586ba7198fbcdd0de4d68e4213a1c0140daaa5446870c94a3</originalsourceid><addsrcrecordid>eNqN0NtKwzAYB_AgiptTn0CkiIg31Ryb9nJsnkCYF3pd0iTtOramJq3gnY_gM_okZnZa8EK8yoEf_-8AwCGCFwjG0SWBBGO0BYaIER4ygsk2GEIISQgR5QOw59zCPxOasF0wwAmLub8OwWRaulpbJ5Yfb-9TXetK6aoJZi9lbVzZlKYKRKWCZq6DcVFYXYivP5MHD8KKtXCrfbCTi6XTB5tzBJ6urx4nt-H97OZuMr4PJaW8CTFFXEKaZVhAhpFmcZQJjpI4z6RSUGmqolhTjIhA0ncNlRCCURrFHMqECjIC511ubc1zq12Trkon9XIpKm1al2KIEsp5EkNPz_6kiFPIWMI8PPkFF6a1lR8j9Z1FGEc07tOkNc5Znae1LVfCvqYIpuv1p936PTzepLXZSqsf9r3vfoRWzkspClNb7Vxfs8tJa5V7evoP6tlRxxauMbavSCPiZySf7Z-iTw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>198622648</pqid></control><display><type>article</type><title>Dispersal‐Dependent Oviposition and the Aggregation of Parasitism</title><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>Jstor Complete Legacy</source><creator>Cronin, James T. ; Strong, Donald R.</creator><contributor>Bernard D. Roitberg</contributor><creatorcontrib>Cronin, James T. ; Strong, Donald R. ; Bernard D. Roitberg</creatorcontrib><description>The prediction that parasitoid foraging effort should increase with distance traversed to reach or to locate hosts has had little experimental attention. Consistent with a number of models of foraging behavior, we found that the per capita number of ovipositions by the minute fairyfly‐egg parasitoidAnagrus sophiaeincreased significantly with dispersal distance to planthopper hosts in the field in experimental patches of many host eggs. In large continuous stands of cordgrass host plants, after dispersal of decimeters or less, female wasps laid approximately 18% of their average of 18.6 eggs. After dispersal to plants isolated 10 m from other cordgrass, they laid approximately 84%, and they laid virtually all of their eggs after dispersal of 250 m to experimental floating islands of cordgrass. The increased oviposition following dispersal tripled the CV2index of aggregation of parasitism to a level theoretically sufficient to promote locally stable parasitoid‐host dynamics in isolated patches. At the same time, the change in wasp behavior did not affect the relationship between parasitism and host density, which was consistently density independent. Our results suggest that increased foraging effort with distance traversed can counter Allee effects in colonization and increase spatial spread of populations of natural enemies.</description><identifier>ISSN: 0003-0147</identifier><identifier>EISSN: 1537-5323</identifier><identifier>DOI: 10.1086/303221</identifier><identifier>PMID: 29587495</identifier><identifier>CODEN: AMNTA4</identifier><language>eng</language><publisher>United States: The University of Chicago Press</publisher><subject>Aggregation ; Anagrus sophiae ; Eggs ; Experiments ; Floating islands ; Foraging ; Insect eggs ; Leaves ; Mymaridae ; Oviposition ; Parasite hosts ; Parasites ; Parasitism ; Parasitoids</subject><ispartof>The American naturalist, 1999-07, Vol.154 (1), p.23-36</ispartof><rights>1999 by The University of Chicago.</rights><rights>1999 by The University of Chicago.</rights><rights>Copyright University of Chicago, acting through its Press Jul 1999</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c447t-2417c04bb2a0521e586ba7198fbcdd0de4d68e4213a1c0140daaa5446870c94a3</citedby><cites>FETCH-LOGICAL-c447t-2417c04bb2a0521e586ba7198fbcdd0de4d68e4213a1c0140daaa5446870c94a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,799,27903,27904</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29587495$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Bernard D. Roitberg</contributor><creatorcontrib>Cronin, James T.</creatorcontrib><creatorcontrib>Strong, Donald R.</creatorcontrib><title>Dispersal‐Dependent Oviposition and the Aggregation of Parasitism</title><title>The American naturalist</title><addtitle>Am Nat</addtitle><description>The prediction that parasitoid foraging effort should increase with distance traversed to reach or to locate hosts has had little experimental attention. Consistent with a number of models of foraging behavior, we found that the per capita number of ovipositions by the minute fairyfly‐egg parasitoidAnagrus sophiaeincreased significantly with dispersal distance to planthopper hosts in the field in experimental patches of many host eggs. In large continuous stands of cordgrass host plants, after dispersal of decimeters or less, female wasps laid approximately 18% of their average of 18.6 eggs. After dispersal to plants isolated 10 m from other cordgrass, they laid approximately 84%, and they laid virtually all of their eggs after dispersal of 250 m to experimental floating islands of cordgrass. The increased oviposition following dispersal tripled the CV2index of aggregation of parasitism to a level theoretically sufficient to promote locally stable parasitoid‐host dynamics in isolated patches. At the same time, the change in wasp behavior did not affect the relationship between parasitism and host density, which was consistently density independent. Our results suggest that increased foraging effort with distance traversed can counter Allee effects in colonization and increase spatial spread of populations of natural enemies.</description><subject>Aggregation</subject><subject>Anagrus sophiae</subject><subject>Eggs</subject><subject>Experiments</subject><subject>Floating islands</subject><subject>Foraging</subject><subject>Insect eggs</subject><subject>Leaves</subject><subject>Mymaridae</subject><subject>Oviposition</subject><subject>Parasite hosts</subject><subject>Parasites</subject><subject>Parasitism</subject><subject>Parasitoids</subject><issn>0003-0147</issn><issn>1537-5323</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><recordid>eNqN0NtKwzAYB_AgiptTn0CkiIg31Ryb9nJsnkCYF3pd0iTtOramJq3gnY_gM_okZnZa8EK8yoEf_-8AwCGCFwjG0SWBBGO0BYaIER4ygsk2GEIISQgR5QOw59zCPxOasF0wwAmLub8OwWRaulpbJ5Yfb-9TXetK6aoJZi9lbVzZlKYKRKWCZq6DcVFYXYivP5MHD8KKtXCrfbCTi6XTB5tzBJ6urx4nt-H97OZuMr4PJaW8CTFFXEKaZVhAhpFmcZQJjpI4z6RSUGmqolhTjIhA0ncNlRCCURrFHMqECjIC511ubc1zq12Trkon9XIpKm1al2KIEsp5EkNPz_6kiFPIWMI8PPkFF6a1lR8j9Z1FGEc07tOkNc5Znae1LVfCvqYIpuv1p936PTzepLXZSqsf9r3vfoRWzkspClNb7Vxfs8tJa5V7evoP6tlRxxauMbavSCPiZySf7Z-iTw</recordid><startdate>19990701</startdate><enddate>19990701</enddate><creator>Cronin, James T.</creator><creator>Strong, Donald R.</creator><general>The University of Chicago Press</general><general>University of Chicago, acting through its Press</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope><scope>7SN</scope><scope>7SS</scope><scope>7ST</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>RC3</scope><scope>SOI</scope><scope>7X8</scope></search><sort><creationdate>19990701</creationdate><title>Dispersal‐Dependent Oviposition and the Aggregation of Parasitism</title><author>Cronin, James T. ; Strong, Donald R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c447t-2417c04bb2a0521e586ba7198fbcdd0de4d68e4213a1c0140daaa5446870c94a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Aggregation</topic><topic>Anagrus sophiae</topic><topic>Eggs</topic><topic>Experiments</topic><topic>Floating islands</topic><topic>Foraging</topic><topic>Insect eggs</topic><topic>Leaves</topic><topic>Mymaridae</topic><topic>Oviposition</topic><topic>Parasite hosts</topic><topic>Parasites</topic><topic>Parasitism</topic><topic>Parasitoids</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cronin, James T.</creatorcontrib><creatorcontrib>Strong, Donald R.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>Environment Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>The American naturalist</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cronin, James T.</au><au>Strong, Donald R.</au><au>Bernard D. Roitberg</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dispersal‐Dependent Oviposition and the Aggregation of Parasitism</atitle><jtitle>The American naturalist</jtitle><addtitle>Am Nat</addtitle><date>1999-07-01</date><risdate>1999</risdate><volume>154</volume><issue>1</issue><spage>23</spage><epage>36</epage><pages>23-36</pages><issn>0003-0147</issn><eissn>1537-5323</eissn><coden>AMNTA4</coden><abstract>The prediction that parasitoid foraging effort should increase with distance traversed to reach or to locate hosts has had little experimental attention. Consistent with a number of models of foraging behavior, we found that the per capita number of ovipositions by the minute fairyfly‐egg parasitoidAnagrus sophiaeincreased significantly with dispersal distance to planthopper hosts in the field in experimental patches of many host eggs. In large continuous stands of cordgrass host plants, after dispersal of decimeters or less, female wasps laid approximately 18% of their average of 18.6 eggs. After dispersal to plants isolated 10 m from other cordgrass, they laid approximately 84%, and they laid virtually all of their eggs after dispersal of 250 m to experimental floating islands of cordgrass. The increased oviposition following dispersal tripled the CV2index of aggregation of parasitism to a level theoretically sufficient to promote locally stable parasitoid‐host dynamics in isolated patches. At the same time, the change in wasp behavior did not affect the relationship between parasitism and host density, which was consistently density independent. Our results suggest that increased foraging effort with distance traversed can counter Allee effects in colonization and increase spatial spread of populations of natural enemies.</abstract><cop>United States</cop><pub>The University of Chicago Press</pub><pmid>29587495</pmid><doi>10.1086/303221</doi><tpages>14</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0003-0147
ispartof The American naturalist, 1999-07, Vol.154 (1), p.23-36
issn 0003-0147
1537-5323
language eng
recordid cdi_proquest_journals_198622648
source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Jstor Complete Legacy
subjects Aggregation
Anagrus sophiae
Eggs
Experiments
Floating islands
Foraging
Insect eggs
Leaves
Mymaridae
Oviposition
Parasite hosts
Parasites
Parasitism
Parasitoids
title Dispersal‐Dependent Oviposition and the Aggregation of Parasitism
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-27T00%3A01%3A24IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstor_proqu&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Dispersal%E2%80%90Dependent%20Oviposition%20and%20the%20Aggregation%20of%20Parasitism&rft.jtitle=The%20American%20naturalist&rft.au=Cronin,%20James%20T.&rft.date=1999-07-01&rft.volume=154&rft.issue=1&rft.spage=23&rft.epage=36&rft.pages=23-36&rft.issn=0003-0147&rft.eissn=1537-5323&rft.coden=AMNTA4&rft_id=info:doi/10.1086/303221&rft_dat=%3Cjstor_proqu%3E10.1086/303221%3C/jstor_proqu%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=198622648&rft_id=info:pmid/29587495&rft_jstor_id=10.1086/303221&rfr_iscdi=true