Trace Metals Affect Early Maternal Transfer of Immune Components in the Feral Pigeon - Sorbonne Université Access content directly
Journal Articles Physiological and Biochemical Zoology Year : 2016

Trace Metals Affect Early Maternal Transfer of Immune Components in the Feral Pigeon

Abstract

Maternal early transfers of immune components influence eggs' hatching probability and nestlings' survival. They depend on females' own immunity and, because they are costly, on their physiological state. Therefore, trace metals, whether toxic and immunosuppressive (e.g., lead, cadmium, etc.) or necessary and immunostimulant (e.g., zinc, copper, iron, etc.), are likely to affect the amount of immune components transferred into the eggs. It may also vary with plumage eumelanin level, which is known to be linked to immunity, to transfer of antibodies, and to metal detoxification. In feral pigeons (Columba livia) injected with an antigen and experimentally exposed to lead and/or zinc (two highly abundant trace metals in urban areas), we measured specific antibody transfer and concentrations of two antimicrobial proteins (lysozyme and ovotransferrin) in eggs. As expected, lead had negative effects on specific antibody transfer, while zinc positively affected lysozyme egg concentrations. Moreover, eggs from lead-exposed females exhibited higher ovotransferrin concentrations; because it binds metal ions, ovotransferrin may enable egg detoxification and embryo protection. Finally, eggs' lysozyme concentrations increased with plumage darkness of females not exposed to zinc, while the relation was opposite among zinc-exposed females, suggesting that benefits and costs of plumage melanism depend on trace metal environmental levels. Overall, our study underlines the potential ecotoxicological effects of trace metals on maternal transfers of immune components and the role of plum-age melanism in modulating these effects.
Fichier principal
Vignette du fichier
Chatelain_2016_Trace_Metals_Affect.pdf (537.33 Ko) Télécharger le fichier
Origin Publisher files allowed on an open archive
Loading...

Dates and versions

hal-01346490 , version 1 (19-07-2016)

Identifiers

Cite

Marion Chatelain, J. Gasparini, C. Haussy, A. Frantz. Trace Metals Affect Early Maternal Transfer of Immune Components in the Feral Pigeon. Physiological and Biochemical Zoology, 2016, 89 (3), pp.206-212. ⟨10.1086/685511⟩. ⟨hal-01346490⟩
193 View
272 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More