Dual function of egg-covering in the Kentish plover Charadrius alexandrinus.
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| Title: | Dual function of egg-covering in the Kentish plover Charadrius alexandrinus. |
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| Authors: | Amat, Juan A., Monsaa, Rocío, Masero, José A. |
| Source: | Behaviour. 2012, Vol. 149 Issue 8, p881-895. 15p. 1 Color Photograph, 1 Diagram, 3 Graphs. |
| Subjects: | Snowy plover, Bird eggs, Egg incubation, Bird embryology, Bird nests, Predation |
| Abstract: | Many bird species take recesses during incubation, and while the nests are unattended, the eggs may both be vulnerable to prédation and reach suboptimal temperatures for embryo development. Perhaps to avoid these negative possibilities, some birds cover their eggs with materials when they depart from nests. We examined experimentally, using the ground-nesting Kentish plover as model species, whether eggcovering allows egg temperatures to remain within optimal limits for embryogenesis in unattended nests, thus reducing the requirements of contact incubation, and simultaneously maintain the eggs' camouflage. There was a negative relationship between nest attendance and ambient temperature, but only during mid-morning, the period of the day when egg-covering was most frequent. Indeed, during mid-morning egg-covering not only served to better camouflage the eggs, but also to maintain egg temperatures within optimal thermal thresholds for embryogenesis while the nests remained unattended. During other periods of the day, covered eggs in unattended nests overheated (e.g., afternoon) or did not reach the optimal temperature for embryogenesis (e.g., early morning). During periods in which eggs may be uncovered to alleviate overheating, unattended nests may be easier to locate by predators, because the eggs are less well camouflaged. Therefore, camouflage and appropriate thermal environment are inseparable functions of egg-covering in the ground-nesting Kentish plover. [ABSTRACT FROM AUTHOR] |
| Copyright of Behaviour is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 82262210 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Dual function of egg-covering in the Kentish plover Charadrius alexandrinus. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Amat%2C+Juan+A%2E%22">Amat, Juan A.</searchLink><br /><searchLink fieldCode="AR" term="%22Monsaa%2C+Rocío%22">Monsaa, Rocío</searchLink><br /><searchLink fieldCode="AR" term="%22Masero%2C+José+A%2E%22">Masero, José A.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Behaviour%22">Behaviour</searchLink>. 2012, Vol. 149 Issue 8, p881-895. 15p. 1 Color Photograph, 1 Diagram, 3 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Snowy+plover%22">Snowy plover</searchLink><br /><searchLink fieldCode="DE" term="%22Bird+eggs%22">Bird eggs</searchLink><br /><searchLink fieldCode="DE" term="%22Egg+incubation%22">Egg incubation</searchLink><br /><searchLink fieldCode="DE" term="%22Bird+embryology%22">Bird embryology</searchLink><br /><searchLink fieldCode="DE" term="%22Bird+nests%22">Bird nests</searchLink><br /><searchLink fieldCode="DE" term="%22Predation%22">Predation</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Many bird species take recesses during incubation, and while the nests are unattended, the eggs may both be vulnerable to prédation and reach suboptimal temperatures for embryo development. Perhaps to avoid these negative possibilities, some birds cover their eggs with materials when they depart from nests. We examined experimentally, using the ground-nesting Kentish plover as model species, whether eggcovering allows egg temperatures to remain within optimal limits for embryogenesis in unattended nests, thus reducing the requirements of contact incubation, and simultaneously maintain the eggs' camouflage. There was a negative relationship between nest attendance and ambient temperature, but only during mid-morning, the period of the day when egg-covering was most frequent. Indeed, during mid-morning egg-covering not only served to better camouflage the eggs, but also to maintain egg temperatures within optimal thermal thresholds for embryogenesis while the nests remained unattended. During other periods of the day, covered eggs in unattended nests overheated (e.g., afternoon) or did not reach the optimal temperature for embryogenesis (e.g., early morning). During periods in which eggs may be uncovered to alleviate overheating, unattended nests may be easier to locate by predators, because the eggs are less well camouflaged. Therefore, camouflage and appropriate thermal environment are inseparable functions of egg-covering in the ground-nesting Kentish plover. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Behaviour is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=82262210 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1163/1568539X-00003008 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 881 Subjects: – SubjectFull: Snowy plover Type: general – SubjectFull: Bird eggs Type: general – SubjectFull: Egg incubation Type: general – SubjectFull: Bird embryology Type: general – SubjectFull: Bird nests Type: general – SubjectFull: Predation Type: general Titles: – TitleFull: Dual function of egg-covering in the Kentish plover Charadrius alexandrinus. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Amat, Juan A. – PersonEntity: Name: NameFull: Monsaa, Rocío – PersonEntity: Name: NameFull: Masero, José A. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: 2012 Type: published Y: 2012 Identifiers: – Type: issn-print Value: 00057959 Numbering: – Type: volume Value: 149 – Type: issue Value: 8 Titles: – TitleFull: Behaviour Type: main |
| ResultId | 1 |
