Instituto de Investigación en Recursos Cinegéticos (IREC) CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13071, Ciudad Real, Spain.
Instituto de Investigación en Recursos Cinegéticos (IREC) CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13071, Ciudad Real, Spain.
Environ Pollut. 2015 Oct;205:350-6. doi: 10.1016/j.envpol.2015.06.014. Epub 2015 Jun 28.
Lead (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(-1) 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.
铅（Pb）中毒已导致全球水禽种群大量死亡。尽管自 2003 年起已被禁用，但在 2011-2012 年，来自埃布罗三角洲的野鸭（Anas platyrhynchos）体内仍有 15.5%的 Pb 弹片摄入率。我们从该地区收集了野鸭蛋，以研究母源传递的 Pb 对蛋壳特性以及雏鸭的免疫反应和氧化平衡的影响。蛋壳 Pb 水平与雏鸭血液中的 Pb 水平呈正相关。血液 Pb 水平超过 180ng/mL 的雏鸭体重减轻，并在孵化后第一周内死亡。血液 Pb 水平与体液免疫反应、内源性抗氧化剂和氧化应激生物标志物呈正相关，与细胞免疫反应呈负相关。鸟类摄入 Pb 弹片会导致母体向后代转移，这可能会影响它们正在发育中的免疫系统，并降低它们在生命早期阶段的存活率。
