Latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiation
Solar radiation is an important driver of animal coloration, not only because of the effects of coloration on body temperature but also because coloration may protect from the deleterious effects of UV radiation. Indeed, dark coloration may protect from UV, but may increase the risk of overheating....
| Autores: | , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/79233 |
| Acceso en línea: | https://hdl.handle.net/11441/79233 https://doi.org/10.1002/ece3.4335 |
| Access Level: | acceso abierto |
| Palabra clave: | Biogeographical pattern Biophysical mechanisms Charadrius alexandrinus Egg coloration Egg size Latitudinal gradient UV protection |
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Latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiationGómez, JesúsRamo, CristinaStevens, MartinLiñán Cembrano, GustavoRendón, Miguel A.Troscianko, Jolyon T.Amat, Juan A.Biogeographical patternBiophysical mechanismsCharadrius alexandrinusEgg colorationEgg sizeLatitudinal gradientUV protectionSolar radiation is an important driver of animal coloration, not only because of the effects of coloration on body temperature but also because coloration may protect from the deleterious effects of UV radiation. Indeed, dark coloration may protect from UV, but may increase the risk of overheating. In addition, the effect of coloration on thermoregulation should change with egg size, as smaller eggs have higher surface‐volume ratios and greater convective coefficients than larger eggs, so that small eggs can dissipate heat quickly. We tested whether the reflectance of eggshells, egg spottiness, and egg size of the ground‐nesting Kentish plover Charadrius alexandrinus is affected by maximum ambient temperature and solar radiation at breeding sites. We measured reflectance, both in the UV and human visible spectrum, spottiness, and egg size in photographs from a museum collection of plover eggshells. Eggshells of lower reflectance (darker) were found at higher latitudes. However, in southern localities where solar radiation is very high, eggshells are also of dark coloration. Eggshell coloration had no significant relationship with ambient temperature. Spotiness was site‐specific. Small eggs tended to be light‐colored. Thermal constraints may drive the observed spatial variation in eggshell coloration, which may be lighter in lower latitudes to diminish the risk of overheating as a result of higher levels of solar radiation. However, in southern localities with very high levels of UV radiation, eggshells are of dark coloration likely to protect embryos from more intense UV radiation. Egg size exhibited variation in relation to coloration, likely through the effect of surface area‐to‐volume ratios on overheating and cooling rates of eggs. Therefore, differential effects of solar radiation on functions of coloration and size of eggshells may shape latitudinal variations in egg appearance in the Kentish plover.Ministerio de Economía y Competitividad of Spain SEV‐2012‐0262Spanish Government CGL2011‐24230 CGL2017‐83518‐PMinisterio de Educación, Cultura y Deporte, Spain FPU12‐01616Biotechnology and Biological Sciences Research Council (BBSRC) BB/J018309/1WileyInstituto de Microelectrónica de Sevilla (IMSE-CNM)2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/79233https://doi.org/10.1002/ece3.4335reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésEcology and Evolution, 8 (16), 8019-8029.SEV‐2012‐0262CGL2011‐24230CGL2017‐83518‐PFPU12‐01616BB/J018309/1http://doi.org/10.1002/ece3.4335info:eu-repo/semantics/openAccessoai:idus.us.es:11441/792332026-06-17T12:51:07Z |
| dc.title.none.fl_str_mv |
Latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiation |
| title |
Latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiation |
| spellingShingle |
Latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiation Gómez, Jesús Biogeographical pattern Biophysical mechanisms Charadrius alexandrinus Egg coloration Egg size Latitudinal gradient UV protection |
| title_short |
Latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiation |
| title_full |
Latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiation |
| title_fullStr |
Latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiation |
| title_full_unstemmed |
Latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiation |
| title_sort |
Latitudinal variation in biophysical characteristics of avian eggshells to cope with differential effects of solar radiation |
| dc.creator.none.fl_str_mv |
Gómez, Jesús Ramo, Cristina Stevens, Martin Liñán Cembrano, Gustavo Rendón, Miguel A. Troscianko, Jolyon T. Amat, Juan A. |
| author |
Gómez, Jesús |
| author_facet |
Gómez, Jesús Ramo, Cristina Stevens, Martin Liñán Cembrano, Gustavo Rendón, Miguel A. Troscianko, Jolyon T. Amat, Juan A. |
| author_role |
author |
| author2 |
Ramo, Cristina Stevens, Martin Liñán Cembrano, Gustavo Rendón, Miguel A. Troscianko, Jolyon T. Amat, Juan A. |
| author2_role |
author author author author author author |
| dc.contributor.none.fl_str_mv |
Instituto de Microelectrónica de Sevilla (IMSE-CNM) |
| dc.subject.none.fl_str_mv |
Biogeographical pattern Biophysical mechanisms Charadrius alexandrinus Egg coloration Egg size Latitudinal gradient UV protection |
| topic |
Biogeographical pattern Biophysical mechanisms Charadrius alexandrinus Egg coloration Egg size Latitudinal gradient UV protection |
| description |
Solar radiation is an important driver of animal coloration, not only because of the effects of coloration on body temperature but also because coloration may protect from the deleterious effects of UV radiation. Indeed, dark coloration may protect from UV, but may increase the risk of overheating. In addition, the effect of coloration on thermoregulation should change with egg size, as smaller eggs have higher surface‐volume ratios and greater convective coefficients than larger eggs, so that small eggs can dissipate heat quickly. We tested whether the reflectance of eggshells, egg spottiness, and egg size of the ground‐nesting Kentish plover Charadrius alexandrinus is affected by maximum ambient temperature and solar radiation at breeding sites. We measured reflectance, both in the UV and human visible spectrum, spottiness, and egg size in photographs from a museum collection of plover eggshells. Eggshells of lower reflectance (darker) were found at higher latitudes. However, in southern localities where solar radiation is very high, eggshells are also of dark coloration. Eggshell coloration had no significant relationship with ambient temperature. Spotiness was site‐specific. Small eggs tended to be light‐colored. Thermal constraints may drive the observed spatial variation in eggshell coloration, which may be lighter in lower latitudes to diminish the risk of overheating as a result of higher levels of solar radiation. However, in southern localities with very high levels of UV radiation, eggshells are of dark coloration likely to protect embryos from more intense UV radiation. Egg size exhibited variation in relation to coloration, likely through the effect of surface area‐to‐volume ratios on overheating and cooling rates of eggs. Therefore, differential effects of solar radiation on functions of coloration and size of eggshells may shape latitudinal variations in egg appearance in the Kentish plover. |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
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article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/11441/79233 https://doi.org/10.1002/ece3.4335 |
| url |
https://hdl.handle.net/11441/79233 https://doi.org/10.1002/ece3.4335 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Ecology and Evolution, 8 (16), 8019-8029. SEV‐2012‐0262 CGL2011‐24230 CGL2017‐83518‐P FPU12‐01616 BB/J018309/1 http://doi.org/10.1002/ece3.4335 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf application/pdf |
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Wiley |
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Wiley |
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reponame:idUS. Depósito de Investigación de la Universidad de Sevilla instname:Universidad de Sevilla (US) |
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Universidad de Sevilla (US) |
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idUS. Depósito de Investigación de la Universidad de Sevilla |
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idUS. Depósito de Investigación de la Universidad de Sevilla |
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