A comparison of egg yolk lipid constituents between parasitic Common Cuckoos and their hosts

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dc.contributor.author Igic, Branislav
dc.contributor.author Zarate, Erica
dc.contributor.author Sewell, Mary A
dc.contributor.author Moskt, Csaba
dc.contributor.author Cassey, Phillip
dc.contributor.author Rutila, Jarkko
dc.contributor.author Grim, Tom
dc.contributor.author Shawkey, Matthew D
dc.contributor.author Hauber, Mark E
dc.date.accessioned 2022-06-19T21:20:41Z
dc.date.available 2022-06-19T21:20:41Z
dc.date.issued 2015-08-21
dc.identifier.citation (2015). Auk: a quarterly journal of ornithology, 132(4), 817-825.
dc.identifier.issn 0004-8038
dc.identifier.uri https://hdl.handle.net/2292/59988
dc.description.abstract Common Cuckoos (Cuculus canorus) are obligate brood parasites that lay their eggs in nests of other species and use these hosts to raise their parasitic offspring. Two key adaptations that increase their reproductive success are (1) the capacity for cuckoos to lay large numbers of eggs and thereby parasitize many nests per year, and (2) the ability of cuckoo eggs to hatch before those of hosts, enabling cuckoo nestlings to evict host eggs and eliminate competition for food. Producing more eggs is generally associated with reduced investment of nutrients and energy reserves per egg, which in turn is associated with shorter incubation periods both within and between species. We hypothesized that Common Cuckoos deposit reduced energy reserves into their eggs than do their hosts to facilitate both (1) and (2). To test these hypotheses, we compared the concentration of yolk lipids (per wet yolk mass) between eggs of 3 cuckoo gentes and their respective host species: Great Reed Warblers (Acrocephalus arundinaceus), Common Redstarts (Phoenicurus phoenicurus), and Reed Warblers (A. scirpaceus). Yolk lipids provide the bulk of energy required for embryonic development and can also serve structural and cell-signalling functions. As a general pattern, cuckoo eggs contained a lower concentration of energy-reserve lipids than eggs of their respective hosts, but not structural or cell-signalling lipids. When controlling for their heavier eggs and yolks, Common Cuckoo eggs had an estimated lower amount of energy reserve lipids for their size than host eggs. Our findings suggest a potential role of yolk lipid composition in facilitating (1) and (2) and advocate the need for further research in this area. We also highlight the potential problems of using either concentration or total yolk mass alone to compare maternal investment across taxa in comparative studies.
dc.language en
dc.publisher Oxford University Press (OUP)
dc.relation.ispartofseries Ornithology
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher.
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm
dc.subject Science & Technology
dc.subject Life Sciences & Biomedicine
dc.subject Ornithology
dc.subject Zoology
dc.subject brood parasitism
dc.subject coevolution
dc.subject Cuculus canorus
dc.subject energy reserves
dc.subject lipids
dc.subject yolk
dc.subject COLOR MIMICRY
dc.subject GAS-EXCHANGE
dc.subject BIRDS
dc.subject EVOLUTION
dc.subject EGGSHELL
dc.subject SIZE
dc.subject EVICTION
dc.subject 0608 Zoology
dc.title A comparison of egg yolk lipid constituents between parasitic Common Cuckoos and their hosts
dc.type Journal Article
dc.identifier.doi 10.1642/auk-15-14.1
pubs.issue 4
pubs.begin-page 817
pubs.volume 132
dc.date.updated 2022-05-16T05:30:29Z
dc.rights.holder Copyright: The author en
pubs.author-url http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000364514600005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e41486220adb198d0efde5a3b153e7d
pubs.end-page 825
pubs.publication-status Published
dc.rights.accessrights http://purl.org/eprint/accessRights/RetrictedAccess en
pubs.subtype Article
pubs.subtype Journal
pubs.elements-id 496410
pubs.org-id Science
pubs.org-id Biological Sciences
dc.identifier.eissn 1938-4254
pubs.record-created-at-source-date 2022-05-16

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