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Altered immune response in mallard ducklings exposed to lead through maternal transfer in the wild

AuthorsVallverdú-Coll, Núria ; López-Antia, Ana ; Martínez-Haro, Mónica ; Ortiz-Santaliestra, Manuel E. ; Mateo, Rafael
KeywordsImmune response
Maternal transfer
Pb poisoning
Developmental toxicity
Oxidative stress
Issue Date2015
CitationEnvironmental Pollution 205: 350-356 (2015)
AbstractLead (Pb) poisoning has caused significant mortality in waterfowl populations worldwide. In spite of having been banned since 2003, prevalence of Pb shot ingestion in mallards (Anas platyrhynchos) from the Ebro delta was still 15.5% in 2011-12. We collected mallard eggs from this area to study the effects of maternally transferred Pb on eggshell properties and on immune response and oxidative balance of ducklings. Eggshell Pb levels were positively correlated with Pb levels in the blood of ducklings. Ducklings with blood Pb levels above 180 ng mL<sup>-1</sup> showed reduced body mass and died during the first week post hatching. Blood Pb levels positively correlated with humoral immune response, endogenous antioxidants and oxidative stress biomarkers, and negatively correlated with cellular immune response. Pb shot ingestion in birds can result in maternal transfer to the offspring that can affect their developing immune system and reduce their survival in early life stages.
Identifiersdoi: 10.1016/j.envpol.2015.06.014
issn: 0269-7491
Appears in Collections:(IREC) Artículos
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