English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/56121
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Experimental evidence for the role of calcium in eggshell pigmentation pattern and breeding performance in Blue Tits Cyanistes caeruleus

AuthorsGarcía-Navas, Vicente ; Sanz, Juan José ; Merino, Santiago ; Martínez de la Puente, Josué ; Lobato, Elisa ; Cerro Gómez, Sara del ; Ruiz-De-Castañeda, Rafael; Moreno Klemming, Juan
KeywordsBlue Tit
Calcium availability
Eggshell pigmentation
Maculation
Speckled eggs
Issue Date2011
PublisherSpringer
CitationJournal of Ornithology, (2011) 152:71–82
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 clear
Publisher version (URL)http://dx.doi.org/10.1007/s10336-010-0551-7
URIhttp://hdl.handle.net/10261/56121
DOI10.1007/s10336-010-0551-7
Appears in Collections:(EBD) Artículos
(MNCN) Artículos
Files in This Item:
File Description SizeFormat 
Jornithol..pdf135,14 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.