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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Analysis of Residue Heavy Metals in Mareca strepera Tissue in Nanhai Wetland Reserve, Baotou
Author of the article:LIU Li , LIU Yunpeng , ZHANG Le , LI Dongxu , XU Hongying , LIU Xiaoguang*
Author's Workplace:Faculty of Biological Science and Technology, Botou Teachers’ College
Key Words:赤膀鸭; 组织; 重金属; 南海湿地保护区
Abstract:Mareca strepera tissue samples (pectoral muscle,cardiac muscle, kidney, liver, and bone), soil, and water were collected from Nnahai Wetland in Baotou, Inner Mongolia in December, 2016. Inductively coupled plasma optical emission spectrometry was then used to measure the heavy metal residue content relating to 8 elements: Cd, Cr, Cu, Ni, Zn, Hg, Fe, and Mn. Differences in heavy metal content among tissues from M. strepera of different age and sex were compared by using One-Way ANOVA and t-test, and the relationships between the elements and tissues were analyzed by using Pearson correlation test to reveal the distribution of the heavy metal residue. The results showed that: (1) the heavy metal content, except Hg in female adult birds, had a significant difference between different tissues.Cr and Ni mainly distributed in the muscle (pectoral muscle and cardiac muscle), and Cd in the kidneys, Cu in the muscle and liver, Zn in the liver and bones, Fe in the liver, Mn in the bones. Correlation analysis results showed that there was a significant positive correlation between Zn and Fe, Mn, Cu, Cr and Ni, but Fe and Cu extremely significant positive correlation,suggesting that in each case they were derived from the same source. (2) The distribution of heavy metals between male and female adult birds was basically the same, but showed differences from the distribution in young birds. Mn was mainly found in the bones of adult birds, but in the kidneys of young birds. (3) Comparing with the data in the other researches, the heavy metal content of the M. strepera tissue collected here is higher, indicating that there is a serious local pollution problem, which should be cause for concern.
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