【摘要】 采用火焰原子吸收方法,对栗斑腹鹀、大山雀、[树]麻雀蛋壳中微量元素含量及其与繁殖特征之间的关系进行了研究。对五种微量元素的仪器工作条件进行了优化,并证实五种元素之间无干扰。加标回收率实验表明Mn,Mg,Cu,Fe和Zn五种元素回收率均在95%~104%之间,表明此方法具有较高的准确度。微量元素测定表明栗斑腹鹀蛋壳Zn和Mn元素的含量均大于大山雀和[树]麻雀,但Cu,Fe和Mg含量均小于大山雀和[树]麻雀。栗斑腹鹀的繁殖成功率和繁殖成活率最低,[树]麻雀的繁殖成功率和繁殖成活率最高,大山雀居中。方差分析表明,栗斑腹鹀、大山雀和[树]麻雀的五种微量元素含量、繁殖成功率和繁殖成活率均达到显著或极显著差异。相关分析表明,三种鸟繁殖成功率和繁殖成活率与Zn和Mn含量之间达到显著或极显著负相关,表明栗斑腹鹀、大山雀、[树]麻雀繁殖特性受到蛋壳微量元素Zn和Mn的影响。栗斑腹鹀蛋壳Mg,Cu和Fe含量低,影响其幼鸟在蛋壳内的生长发育,导致极低的繁殖成功率。更多还原

【Abstract】 The contents of trace elements in the eggshells of Emberiza jankowskii,Parus major and Passer montanus were examined by flame atomic absorption spectrophotometer(FAAS),and the correlations between these trace elements of eggshell and breeding characteristics of the three bird species were studied.In the meantime,the optimum parameters of FAAS were studied,and no cross effect were observed among the five trace elements.The recovery rates of standard addition of Mn,Mg,Cu,Fe and Zn were 95%-104% indicating a fairly good accuracy of the FAAS method.It was showed that the Zn and Mn contents in the eggshell of E. jankowskii were higher than those of P.major and P.montanus.However,the Cu,Fe and Mg contents in the eggshell of E.jankowskii were lower than those of P.major and P.montanus.E.jankowskii had the lowest breeding success rate and survive rate,P.montanus had the highest breeding success rate and survive rate,and P.major had the medial rates.Analysis of variance showed that there were significant difference in Mn,Mg,Cu,Fe and Zn contents of eggshell,the breeding success rate and survive rate among E.jankowskii,P.major and P.montanus.Correlation analysis showed that there was obviously a negative correlation between Mn and Zn contents of eggshells and the breeding success rate,the breeding survival rate of E.jankowskii,P.major and P.montanus,possibly suggesting some kind of connection between the breeding success rate,breeding survive rate and the Zn and Mn contents of eggshell of E.jankowskii,P.major and P.montanus.The considerably reduced breeding success rate of E.jankowskii could be due to the low level of Mg,Cu and Fe in its eggshell,causing suboptimal nutrition during embryonic development.更多还原