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The avian eggshell: the impact of evolution, growth rate and mode of development on the structure and function of the avian eggshell
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Linnaeus University Press, 2013. , p. 44
Series
Linnaeus University Dissertations ; 111
National Category
Zoology
Research subject
Ecology, Zoonotic Ecology
Identifiers
URN: urn:nbn:se:lnu:diva-110482Libris ID: 13958934ISBN: 9789186983987 (print)OAI: oai:DiVA.org:lnu-110482DiVA, id: diva2:1638693
Public defence
2013-02-08, N2007, Smålandsgatan 26, Kalmar, 09:00 (English)
Opponent
Supervisors
Available from: 2022-02-17 Created: 2022-02-17 Last updated: 2025-01-23Bibliographically approved
List of papers
1. Eggshell structure, mode of development and growth rate in birds.
Open this publication in new window or tab >>Eggshell structure, mode of development and growth rate in birds.
2008 (English)In: Zoology (Jena), ISSN 0944-2006, E-ISSN 1873-2720, Vol. 111, no 6, p. 494-502Article in journal (Refereed) Published
Keywords
Precocial birds; Altricial birds; Embryogenesis; Calcium source; Mammillary layer
National Category
Natural Sciences
Research subject
Natural Science, Cell and Organism Biology; Natural Science, Evolutionary Biology
Identifiers
urn:nbn:se:lnu:diva-1606 (URN)10.1016/j.zool.2007.11.005 (DOI)
Available from: 2010-04-06 Created: 2010-04-06 Last updated: 2022-02-17Bibliographically approved
2. Evolution of avian eggshell structure.
Open this publication in new window or tab >>Evolution of avian eggshell structure.
2012 (English)In: Journal of morphology, ISSN 0362-2525, E-ISSN 1097-4687, Vol. 273, no 3, p. 241-247Article in journal (Refereed) Published
Abstract [en]

Data are presented suggesting that birds have evolved eggs with shells containing different structures (numbers of mammillae per unit of inner eggshell surface area, i.e., mammillary densities) to cope up with different calcium requirements imposed by different growth rates and modes of development. Precocial bird species grow slowly, but have high mammillary density, while altricial bird species grow rapidly, but have low mammillary density. These results suggest an adaptation associated with growth rate and mode of development and show, moreover, that the mammillary layer is indicative of the breeding biology of the bird.

National Category
Biological Sciences
Research subject
Natural Science, Cell and Organism Biology
Identifiers
urn:nbn:se:lnu:diva-22850 (URN)10.1002/jmor.11018 (DOI)000299731000001 ()21987469 (PubMedID)2-s2.0-84856480015 (Scopus ID)
Available from: 2012-12-12 Created: 2012-12-12 Last updated: 2022-05-02Bibliographically approved
3. Calcium mobilization from the avian eggshell during embryonic development
Open this publication in new window or tab >>Calcium mobilization from the avian eggshell during embryonic development
2013 (English)In: Animal Biology, ISSN 1570-7555, E-ISSN 1570-7563, Vol. 63, no 1, p. 33-46Article in journal (Refereed) Published
Abstract [en]

The avian eggshell acts as the major source of calcium for embryogenesis in bird. Using scanning electron microscopy, the inner eggshell surface was analysed before and after embryonic development and its accompanying calcium removal. This was done in eggs from two bird species with different growth rates and modes of development, the precocial Japanese quail Coturnix japonica and the altricial starling Sturnus vulgaris. Next, enzyme histochemistry was used to localize carbonic anhydrase in the extra-embryonic chorioallantoic membrane to provide support for the hypothesis that calcium may be released from the eggshell by means of acidification through the action of carbonic anhydrase. However, neither in the precocial quail nor in the altricial starling could any staining for carbonic anhydrase be detected. These results lead us to the conclusion that the role of carbonic anhydrase in embryonic calcium mobilization from the avian eggshell remains unclear.

Keywords
Bird, precocial, altricial, mammillary tips, chorioallantoic membrane, carbonic anhydrase
National Category
Biological Sciences
Research subject
Natural Science, Cell and Organism Biology
Identifiers
urn:nbn:se:lnu:diva-25225 (URN)10.1163/15707563-00002392 (DOI)000315750800003 ()2-s2.0-84874915350 (Scopus ID)
Available from: 2013-04-10 Created: 2013-04-05 Last updated: 2022-02-17Bibliographically approved

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Österström, Ola

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