Hatching Asynchrony Reduces Parental Investment in the Jackdaw
(1) Twenty-two control pairs of jackdaws, Corvus monedula, hatched their clutches asynchronously over a mean of 2.7 days. Hatching synchrony was induced experimentally in sixteen further broods by transferring chicks hatched on the same day from two or three nests into a single nest. The transfer ha...
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| Veröffentlicht in: | The Journal of animal ecology 1987-06, Vol.56 (2), p.403-414 |
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| container_title | The Journal of animal ecology |
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| creator | Gibbons, David Wingfield |
| description | (1) Twenty-two control pairs of jackdaws, Corvus monedula, hatched their clutches asynchronously over a mean of 2.7 days. Hatching synchrony was induced experimentally in sixteen further broods by transferring chicks hatched on the same day from two or three nests into a single nest. The transfer had no effect on chick survival. (2) The within-brood variation in weight (the `brood hierarchy') was greatly reduced in experimental broods relative to control broods. (3) In both control and experimental broods more than 80% of chick mortality was through starvation, and only 5% through predation. (4) In both control and experimental broods, chicks high in the brood weight hierarchy had a greater fledging success than those low in the hierarchy, and chicks starved sequentially in reverse order of their position in the hierarchy (lightest first, etc.). The effect of position in the hierarchy on fledging probability did not differ for control and experimental chicks. (5) Control and experimental broods did not differ in the number of chicks fledged. Control and experimental chicks did not differ in weight, wing length or tarsus length at 26 days of age. (6) Parents that reared control (asynchronous) broods wasted less parental investment than parents that reared experimental (synchronous) broods, because control chicks that starved did so at a younger age than experimental chicks. |
| doi_str_mv | 10.2307/5056 |
| format | Article |
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Hatching synchrony was induced experimentally in sixteen further broods by transferring chicks hatched on the same day from two or three nests into a single nest. The transfer had no effect on chick survival. (2) The within-brood variation in weight (the `brood hierarchy') was greatly reduced in experimental broods relative to control broods. (3) In both control and experimental broods more than 80% of chick mortality was through starvation, and only 5% through predation. (4) In both control and experimental broods, chicks high in the brood weight hierarchy had a greater fledging success than those low in the hierarchy, and chicks starved sequentially in reverse order of their position in the hierarchy (lightest first, etc.). The effect of position in the hierarchy on fledging probability did not differ for control and experimental chicks. (5) Control and experimental broods did not differ in the number of chicks fledged. Control and experimental chicks did not differ in weight, wing length or tarsus length at 26 days of age. (6) Parents that reared control (asynchronous) broods wasted less parental investment than parents that reared experimental (synchronous) broods, because control chicks that starved did so at a younger age than experimental chicks.</description><identifier>ISSN: 0021-8790</identifier><identifier>EISSN: 1365-2656</identifier><identifier>DOI: 10.2307/5056</identifier><identifier>CODEN: JAECAP</identifier><language>eng</language><publisher>Oxford: Blackwell Scientific Publications</publisher><subject>Animal ethology ; Animal nesting ; Applied sciences ; Aves ; Biological and medical sciences ; Bird nesting ; Chicks ; Corvus monedula ; Eggs ; Exact sciences and technology ; Fundamental and applied biological sciences. Psychology ; Hatching ; Other techniques and industries ; Parental investment ; Predation ; Psychology. Psychoanalysis. Psychiatry ; Starvation ; Tarsus ; Vertebrata ; Waterfowl</subject><ispartof>The Journal of animal ecology, 1987-06, Vol.56 (2), p.403-414</ispartof><rights>Copyright 1987 British Ecological Society</rights><rights>1988 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c360t-c0c71c4bd1fc88ed1f3756bf51dbb5af4ffa9d0af53a0fe11e4bb526a237dc043</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/5056$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/5056$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,778,782,801,27856,27911,27912,58004,58237</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=7483917$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=7753516$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Gibbons, David Wingfield</creatorcontrib><title>Hatching Asynchrony Reduces Parental Investment in the Jackdaw</title><title>The Journal of animal ecology</title><description>(1) Twenty-two control pairs of jackdaws, Corvus monedula, hatched their clutches asynchronously over a mean of 2.7 days. Hatching synchrony was induced experimentally in sixteen further broods by transferring chicks hatched on the same day from two or three nests into a single nest. The transfer had no effect on chick survival. (2) The within-brood variation in weight (the `brood hierarchy') was greatly reduced in experimental broods relative to control broods. (3) In both control and experimental broods more than 80% of chick mortality was through starvation, and only 5% through predation. (4) In both control and experimental broods, chicks high in the brood weight hierarchy had a greater fledging success than those low in the hierarchy, and chicks starved sequentially in reverse order of their position in the hierarchy (lightest first, etc.). The effect of position in the hierarchy on fledging probability did not differ for control and experimental chicks. (5) Control and experimental broods did not differ in the number of chicks fledged. Control and experimental chicks did not differ in weight, wing length or tarsus length at 26 days of age. (6) Parents that reared control (asynchronous) broods wasted less parental investment than parents that reared experimental (synchronous) broods, because control chicks that starved did so at a younger age than experimental chicks.</description><subject>Animal ethology</subject><subject>Animal nesting</subject><subject>Applied sciences</subject><subject>Aves</subject><subject>Biological and medical sciences</subject><subject>Bird nesting</subject><subject>Chicks</subject><subject>Corvus monedula</subject><subject>Eggs</subject><subject>Exact sciences and technology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Hatching</subject><subject>Other techniques and industries</subject><subject>Parental investment</subject><subject>Predation</subject><subject>Psychology. Psychoanalysis. Psychiatry</subject><subject>Starvation</subject><subject>Tarsus</subject><subject>Vertebrata</subject><subject>Waterfowl</subject><issn>0021-8790</issn><issn>1365-2656</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1987</creationdate><recordtype>article</recordtype><sourceid>K30</sourceid><recordid>eNqF0FFLwzAQB_AgCs7N71BRfKtekiZpX4Qx1E0GiuhzuaaJ6-zSmbTKvr0dEwURfDru-HF3_AkZUbhgHNSlACH3yIByKWImhdwnAwBG41RlcEiOQlgCgGLAB-Rqiq1eVO4lGoeN0wvfuE30aMpOmxA9oDeuxTqauXcT2lXfRJWL2oWJ7lC_lvgxIgcW62COv-qQPN9cP02m8fz-djYZz2PNJbSxBq2oToqSWp2mpi9cCVlYQcuiEGgTazErAa3gCNZQapJ-ziQyrkoNCR-S893etW_euv6XfFUFbeoanWm6kNNEMSop7-HpL7hsOu_633LKtyGwjLNene2U9k0I3th87asV-k1OId9GmG8j_GFrDBpr69HpKnxbpQQX9H-WpDyjqmcnO7YMbeP_vvgJu4mF2A</recordid><startdate>19870601</startdate><enddate>19870601</enddate><creator>Gibbons, David Wingfield</creator><general>Blackwell Scientific Publications</general><general>Blackwell</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>HFIND</scope><scope>HZAIM</scope><scope>K30</scope><scope>PAAUG</scope><scope>PAWHS</scope><scope>PAWZZ</scope><scope>PAXOH</scope><scope>PBHAV</scope><scope>PBQSW</scope><scope>PBYQZ</scope><scope>PCIWU</scope><scope>PCMID</scope><scope>PCZJX</scope><scope>PDGRG</scope><scope>PDWWI</scope><scope>PETMR</scope><scope>PFVGT</scope><scope>PGXDX</scope><scope>PIHIL</scope><scope>PISVA</scope><scope>PJCTQ</scope><scope>PJTMS</scope><scope>PLCHJ</scope><scope>PMHAD</scope><scope>PNQDJ</scope><scope>POUND</scope><scope>PPLAD</scope><scope>PQAPC</scope><scope>PQCAN</scope><scope>PQCMW</scope><scope>PQEME</scope><scope>PQHKH</scope><scope>PQMID</scope><scope>PQNCT</scope><scope>PQNET</scope><scope>PQSCT</scope><scope>PQSET</scope><scope>PSVJG</scope><scope>PVMQY</scope><scope>PZGFC</scope><scope>7SN</scope><scope>C1K</scope></search><sort><creationdate>19870601</creationdate><title>Hatching Asynchrony Reduces Parental Investment in the Jackdaw</title><author>Gibbons, David Wingfield</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c360t-c0c71c4bd1fc88ed1f3756bf51dbb5af4ffa9d0af53a0fe11e4bb526a237dc043</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1987</creationdate><topic>Animal ethology</topic><topic>Animal nesting</topic><topic>Applied sciences</topic><topic>Aves</topic><topic>Biological and medical sciences</topic><topic>Bird nesting</topic><topic>Chicks</topic><topic>Corvus monedula</topic><topic>Eggs</topic><topic>Exact sciences and technology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Hatching</topic><topic>Other techniques and industries</topic><topic>Parental investment</topic><topic>Predation</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Starvation</topic><topic>Tarsus</topic><topic>Vertebrata</topic><topic>Waterfowl</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gibbons, David Wingfield</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Periodicals Index Online Segment 16</collection><collection>Periodicals Index Online Segment 26</collection><collection>Periodicals Index Online</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - West</collection><collection>Primary Sources Access (Plan D) - International</collection><collection>Primary Sources Access & Build (Plan A) - MEA</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Midwest</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Northeast</collection><collection>Primary Sources Access (Plan D) - Southeast</collection><collection>Primary Sources Access (Plan D) - North Central</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Southeast</collection><collection>Primary Sources Access (Plan D) - South Central</collection><collection>Primary Sources Access & Build (Plan A) - UK / I</collection><collection>Primary Sources Access (Plan D) - Canada</collection><collection>Primary Sources Access (Plan D) - EMEALA</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - North Central</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - South Central</collection><collection>Primary Sources Access & Build (Plan A) - International</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - International</collection><collection>Primary Sources Access (Plan D) - West</collection><collection>Periodicals Index Online Segments 1-50</collection><collection>Primary Sources Access (Plan D) - APAC</collection><collection>Primary Sources Access (Plan D) - Midwest</collection><collection>Primary Sources Access (Plan D) - MEA</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Canada</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - UK / I</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - EMEALA</collection><collection>Primary Sources Access & Build (Plan A) - APAC</collection><collection>Primary Sources Access & Build (Plan A) - Canada</collection><collection>Primary Sources Access & Build (Plan A) - West</collection><collection>Primary Sources Access & Build (Plan A) - EMEALA</collection><collection>Primary Sources Access (Plan D) - Northeast</collection><collection>Primary Sources Access & Build (Plan A) - Midwest</collection><collection>Primary Sources Access & Build (Plan A) - North Central</collection><collection>Primary Sources Access & Build (Plan A) - Northeast</collection><collection>Primary Sources Access & Build (Plan A) - South Central</collection><collection>Primary Sources Access & Build (Plan A) - Southeast</collection><collection>Primary Sources Access (Plan D) - UK / I</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - APAC</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - MEA</collection><collection>Ecology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>The Journal of animal ecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gibbons, David Wingfield</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hatching Asynchrony Reduces Parental Investment in the Jackdaw</atitle><jtitle>The Journal of animal ecology</jtitle><date>1987-06-01</date><risdate>1987</risdate><volume>56</volume><issue>2</issue><spage>403</spage><epage>414</epage><pages>403-414</pages><issn>0021-8790</issn><eissn>1365-2656</eissn><coden>JAECAP</coden><abstract>(1) Twenty-two control pairs of jackdaws, Corvus monedula, hatched their clutches asynchronously over a mean of 2.7 days. Hatching synchrony was induced experimentally in sixteen further broods by transferring chicks hatched on the same day from two or three nests into a single nest. The transfer had no effect on chick survival. (2) The within-brood variation in weight (the `brood hierarchy') was greatly reduced in experimental broods relative to control broods. (3) In both control and experimental broods more than 80% of chick mortality was through starvation, and only 5% through predation. (4) In both control and experimental broods, chicks high in the brood weight hierarchy had a greater fledging success than those low in the hierarchy, and chicks starved sequentially in reverse order of their position in the hierarchy (lightest first, etc.). The effect of position in the hierarchy on fledging probability did not differ for control and experimental chicks. (5) Control and experimental broods did not differ in the number of chicks fledged. Control and experimental chicks did not differ in weight, wing length or tarsus length at 26 days of age. (6) Parents that reared control (asynchronous) broods wasted less parental investment than parents that reared experimental (synchronous) broods, because control chicks that starved did so at a younger age than experimental chicks.</abstract><cop>Oxford</cop><pub>Blackwell Scientific Publications</pub><doi>10.2307/5056</doi><tpages>12</tpages></addata></record> |
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| ispartof | The Journal of animal ecology, 1987-06, Vol.56 (2), p.403-414 |
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| source | Periodicals Index Online; Jstor Complete Legacy |
| subjects | Animal ethology Animal nesting Applied sciences Aves Biological and medical sciences Bird nesting Chicks Corvus monedula Eggs Exact sciences and technology Fundamental and applied biological sciences. Psychology Hatching Other techniques and industries Parental investment Predation Psychology. Psychoanalysis. Psychiatry Starvation Tarsus Vertebrata Waterfowl |
| title | Hatching Asynchrony Reduces Parental Investment in the Jackdaw |
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