Loading…
Patch exploitation in a producer-scrounger system: test of a hypothesis using flocks of spice finches (Lonchura punctulata)
Group foraging allows individuals (scroungers) to obtain food discovered by others (producers). Producer-scrounger game models typically overlook the costs and benefits of patch exploitation, assuming instead that producers and scroungers abandon patches simultaneously once depletion occurs. Here we...
Saved in:
Published in: | Behavioral ecology 1997-01, Vol.8 (1), p.54-59 |
---|---|
Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
cited_by | cdi_FETCH-LOGICAL-c343t-b94b13fd0805132ab1492eb1377028480b0b112dab21b5c43d1eb2ab81e45be13 |
---|---|
cites | |
container_end_page | 59 |
container_issue | 1 |
container_start_page | 54 |
container_title | Behavioral ecology |
container_volume | 8 |
creator | Beauchamp, Guy Giraldeau, Luc-Alain |
description | Group foraging allows individuals (scroungers) to obtain food discovered by others (producers). Producer-scrounger game models typically overlook the costs and benefits of patch exploitation, assuming instead that producers and scroungers abandon patches simultaneously once depletion occurs. Here we develop an extension of the marginal value theorem of patch exploitation that includes the producer-scrounger dynamics and examine the propensity of a producer to abandon its patch before depletion once scroungers arrive. We predict that early departures should occur more often when expected searching time decreases and when competition intensity in the patch increases. Competition intensity is expected to increase when more scroungers are present or when patches are smaller. We tested these predictions using a within-subject experimental design with six captive flocks of spice finches (Lonchura punctulata), each composed of one producer and three scroungers. As predicted, producers abandoned their food discoveries more frequently once scroungers arrived when searching time was short, when more scroungers were present, and when patches were small. The results show that the producers of a patch often leave as scroungers join their food discoveries because the payoffs from leaving exceed those from staying |
doi_str_mv | 10.1093/beheco/8.1.54 |
format | article |
fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_15878206</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>15878206</sourcerecordid><originalsourceid>FETCH-LOGICAL-c343t-b94b13fd0805132ab1492eb1377028480b0b112dab21b5c43d1eb2ab81e45be13</originalsourceid><addsrcrecordid>eNpFkM1LJDEQxZtFYXX0uPecFj30mMrHdLc3UXddGL9AQbyEJFPtRHs6bZIGB__5jYzoqR71fjyqXlH8AjoF2vAjg0u0_qiewlSKH8UOiJksK1Y1W1lTIUvGRPOz2I3xmVIKjZjtFO83Otklwbeh8y7p5HxPXE80GYJfjBZDGW3wY_-EgcR1TLg6JgljIr7N0HI9-LTE6CIZo-ufSNt5-xI_zDg4i6R1vc0-OZj7LMaQc8feprHTSR_uFdut7iLuf85Jcf_n_O70opxf__13ejIvLRc8laYRBni7oDWVwJk2IBqGeVVVlNWipoYaALbQhoGRVvAFoMlYDSikQeCT4vcmN__0Oubj1cpFi12ne_RjVCDrqmZ0lsFyA-aXYwzYqiG4lQ5rBVR9VKw2FatagZLim3e5mLcvWIcXNat4JdXFw6O6klfzs9ubR3XJ_wO-xYHU</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>15878206</pqid></control><display><type>article</type><title>Patch exploitation in a producer-scrounger system: test of a hypothesis using flocks of spice finches (Lonchura punctulata)</title><source>Oxford Journals Online</source><creator>Beauchamp, Guy ; Giraldeau, Luc-Alain</creator><creatorcontrib>Beauchamp, Guy ; Giraldeau, Luc-Alain</creatorcontrib><description>Group foraging allows individuals (scroungers) to obtain food discovered by others (producers). Producer-scrounger game models typically overlook the costs and benefits of patch exploitation, assuming instead that producers and scroungers abandon patches simultaneously once depletion occurs. Here we develop an extension of the marginal value theorem of patch exploitation that includes the producer-scrounger dynamics and examine the propensity of a producer to abandon its patch before depletion once scroungers arrive. We predict that early departures should occur more often when expected searching time decreases and when competition intensity in the patch increases. Competition intensity is expected to increase when more scroungers are present or when patches are smaller. We tested these predictions using a within-subject experimental design with six captive flocks of spice finches (Lonchura punctulata), each composed of one producer and three scroungers. As predicted, producers abandoned their food discoveries more frequently once scroungers arrived when searching time was short, when more scroungers were present, and when patches were small. The results show that the producers of a patch often leave as scroungers join their food discoveries because the payoffs from leaving exceed those from staying</description><identifier>ISSN: 1045-2249</identifier><identifier>EISSN: 1465-7279</identifier><identifier>DOI: 10.1093/beheco/8.1.54</identifier><language>eng</language><publisher>Oxford University Press</publisher><subject>competition intensity ; Lonchura punctulata ; patch exploitation ; producer-scrounger system ; search time ; spice finch</subject><ispartof>Behavioral ecology, 1997-01, Vol.8 (1), p.54-59</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c343t-b94b13fd0805132ab1492eb1377028480b0b112dab21b5c43d1eb2ab81e45be13</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Beauchamp, Guy</creatorcontrib><creatorcontrib>Giraldeau, Luc-Alain</creatorcontrib><title>Patch exploitation in a producer-scrounger system: test of a hypothesis using flocks of spice finches (Lonchura punctulata)</title><title>Behavioral ecology</title><description>Group foraging allows individuals (scroungers) to obtain food discovered by others (producers). Producer-scrounger game models typically overlook the costs and benefits of patch exploitation, assuming instead that producers and scroungers abandon patches simultaneously once depletion occurs. Here we develop an extension of the marginal value theorem of patch exploitation that includes the producer-scrounger dynamics and examine the propensity of a producer to abandon its patch before depletion once scroungers arrive. We predict that early departures should occur more often when expected searching time decreases and when competition intensity in the patch increases. Competition intensity is expected to increase when more scroungers are present or when patches are smaller. We tested these predictions using a within-subject experimental design with six captive flocks of spice finches (Lonchura punctulata), each composed of one producer and three scroungers. As predicted, producers abandoned their food discoveries more frequently once scroungers arrived when searching time was short, when more scroungers were present, and when patches were small. The results show that the producers of a patch often leave as scroungers join their food discoveries because the payoffs from leaving exceed those from staying</description><subject>competition intensity</subject><subject>Lonchura punctulata</subject><subject>patch exploitation</subject><subject>producer-scrounger system</subject><subject>search time</subject><subject>spice finch</subject><issn>1045-2249</issn><issn>1465-7279</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNpFkM1LJDEQxZtFYXX0uPecFj30mMrHdLc3UXddGL9AQbyEJFPtRHs6bZIGB__5jYzoqR71fjyqXlH8AjoF2vAjg0u0_qiewlSKH8UOiJksK1Y1W1lTIUvGRPOz2I3xmVIKjZjtFO83Otklwbeh8y7p5HxPXE80GYJfjBZDGW3wY_-EgcR1TLg6JgljIr7N0HI9-LTE6CIZo-ufSNt5-xI_zDg4i6R1vc0-OZj7LMaQc8feprHTSR_uFdut7iLuf85Jcf_n_O70opxf__13ejIvLRc8laYRBni7oDWVwJk2IBqGeVVVlNWipoYaALbQhoGRVvAFoMlYDSikQeCT4vcmN__0Oubj1cpFi12ne_RjVCDrqmZ0lsFyA-aXYwzYqiG4lQ5rBVR9VKw2FatagZLim3e5mLcvWIcXNat4JdXFw6O6klfzs9ubR3XJ_wO-xYHU</recordid><startdate>19970101</startdate><enddate>19970101</enddate><creator>Beauchamp, Guy</creator><creator>Giraldeau, Luc-Alain</creator><general>Oxford University Press</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope><scope>7SN</scope><scope>C1K</scope></search><sort><creationdate>19970101</creationdate><title>Patch exploitation in a producer-scrounger system: test of a hypothesis using flocks of spice finches (Lonchura punctulata)</title><author>Beauchamp, Guy ; Giraldeau, Luc-Alain</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c343t-b94b13fd0805132ab1492eb1377028480b0b112dab21b5c43d1eb2ab81e45be13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>competition intensity</topic><topic>Lonchura punctulata</topic><topic>patch exploitation</topic><topic>producer-scrounger system</topic><topic>search time</topic><topic>spice finch</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Beauchamp, Guy</creatorcontrib><creatorcontrib>Giraldeau, Luc-Alain</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>Ecology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Behavioral ecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Beauchamp, Guy</au><au>Giraldeau, Luc-Alain</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Patch exploitation in a producer-scrounger system: test of a hypothesis using flocks of spice finches (Lonchura punctulata)</atitle><jtitle>Behavioral ecology</jtitle><date>1997-01-01</date><risdate>1997</risdate><volume>8</volume><issue>1</issue><spage>54</spage><epage>59</epage><pages>54-59</pages><issn>1045-2249</issn><eissn>1465-7279</eissn><abstract>Group foraging allows individuals (scroungers) to obtain food discovered by others (producers). Producer-scrounger game models typically overlook the costs and benefits of patch exploitation, assuming instead that producers and scroungers abandon patches simultaneously once depletion occurs. Here we develop an extension of the marginal value theorem of patch exploitation that includes the producer-scrounger dynamics and examine the propensity of a producer to abandon its patch before depletion once scroungers arrive. We predict that early departures should occur more often when expected searching time decreases and when competition intensity in the patch increases. Competition intensity is expected to increase when more scroungers are present or when patches are smaller. We tested these predictions using a within-subject experimental design with six captive flocks of spice finches (Lonchura punctulata), each composed of one producer and three scroungers. As predicted, producers abandoned their food discoveries more frequently once scroungers arrived when searching time was short, when more scroungers were present, and when patches were small. The results show that the producers of a patch often leave as scroungers join their food discoveries because the payoffs from leaving exceed those from staying</abstract><pub>Oxford University Press</pub><doi>10.1093/beheco/8.1.54</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
fulltext | fulltext |
identifier | ISSN: 1045-2249 |
ispartof | Behavioral ecology, 1997-01, Vol.8 (1), p.54-59 |
issn | 1045-2249 1465-7279 |
language | eng |
recordid | cdi_proquest_miscellaneous_15878206 |
source | Oxford Journals Online |
subjects | competition intensity Lonchura punctulata patch exploitation producer-scrounger system search time spice finch |
title | Patch exploitation in a producer-scrounger system: test of a hypothesis using flocks of spice finches (Lonchura punctulata) |
url | http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-25T20%3A23%3A22IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Patch%20exploitation%20in%20a%20producer-scrounger%20system:%20test%20of%20a%20hypothesis%20using%20flocks%20of%20spice%20finches%20(Lonchura%20punctulata)&rft.jtitle=Behavioral%20ecology&rft.au=Beauchamp,%20Guy&rft.date=1997-01-01&rft.volume=8&rft.issue=1&rft.spage=54&rft.epage=59&rft.pages=54-59&rft.issn=1045-2249&rft.eissn=1465-7279&rft_id=info:doi/10.1093/beheco/8.1.54&rft_dat=%3Cproquest_cross%3E15878206%3C/proquest_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c343t-b94b13fd0805132ab1492eb1377028480b0b112dab21b5c43d1eb2ab81e45be13%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=15878206&rft_id=info:pmid/&rfr_iscdi=true |