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dc.contributor.authorGarcía-Navas, Vicente-
dc.contributor.authorSanz, Juan José-
dc.contributor.authorMerino, Santiago-
dc.contributor.authorMartínez de la Puente, Josué-
dc.contributor.authorLobato, Elisa-
dc.contributor.authorCerro Gómez, Sara del-
dc.contributor.authorRuiz de Castañeda, Rafael-
dc.contributor.authorMoreno Klemming, Juan-
dc.date.accessioned2012-09-12T07:49:04Z-
dc.date.available2012-09-12T07:49:04Z-
dc.date.issued2011-
dc.identifier.citationJournal of Ornithology, (2011) 152:71–82es_ES
dc.identifier.urihttp://hdl.handle.net/10261/56121-
dc.description.abstractPrevious studies have found strong relation- ships between calcium availability and eggshell pigmen- tation in the Great Tit (Parus major). According to the ‘‘structural function hypothesis’’, protoporphyrins, the pigments responsible for reddish spots on speckled eggs, are deposited in those areas of the shell where calcium deposition is less intense. In the study reported here, which was carried out in three Blue Tit (Cyanistes caeruleus) populations in central Spain, we provide partial experi- mental support for the association between protoporphyrin eggshell pigmentation and shell thinning. Contrary to our expectations, we did not observe a decrease in the size and intensity of pigment spots for those eggs from calcium- supplemented nests. However, we did find that the provi- sion of calcium-rich material during the egg-laying period led to a more wide distribution of pigment spots and reduced the proportion of eggs with defective shells (deviant pigmentation, dull and rough surface). When only the supplemented nests were considered in the analysis, within the same clutch we also detected differences in the spotting distribution between those eggs laid by female Blue Tits observed to have consumed calcium consumption on the day prior to laying and those observed not to have consumed calcium on the day prior to laying. Clutch size was not affected by the calcium supplementation. Female Blue Tits experimentally supplied with calcium-rich material had a shorter incubation period than control females, and they laid eggs with thicker shells. Eggshell thickness markedly affects the probability of hatching and could explain the lower proportion of unhatched late eggs found in supplemented nests in comparison with control ones. This study highlights the role of calcium in eggshell maculation and its effects on breeding performance of small passerines. We found the spotting distribution to be a good predictor of calcium deficiency. However, our results provide only mixed support for the ‘‘structural function hypothesis’’: in our study populations, the thickness of the eggshell was intimately associated with calcium avail- ability, but the relationship between calcium and proto- porphyrin deposition remains far from cleares_ES
dc.language.isoenges_ES
dc.publisherSpringer Naturees_ES
dc.rightsopenAccesses_ES
dc.subjectBlue tites_ES
dc.subjectCalcium availabilityes_ES
dc.subjectEggshell pigmentationes_ES
dc.subjectMaculationes_ES
dc.subjectSpeckled eggses_ES
dc.titleExperimental evidence for the role of calcium in eggshell pigmentation pattern and breeding performance in Blue Tits Cyanistes caeruleuses_ES
dc.typeartículoes_ES
dc.identifier.doi10.1007/s10336-010-0551-7-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1007/s10336-010-0551-7es_ES
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairetypeartículo-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
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