Burger J, Gochfeld M
Department of Biological Sciences, Rutgers University, Piscataway, New Jersey 08855.
Arch Environ Contam Toxicol. 1992 Nov;23(4):431-4. doi: 10.1007/BF00203805.
Most studies of heavy metals and selenium have not examined or have failed to find differences in concentrations in the tissues of birds as a function of size or sex. Heavy metal and selenium concentrations were analyzed in breast feathers of adult black skimmers Rynchops niger, a species with marked sexual size dimorphism in which males average 35% heavier than females. Females had significantly higher concentrations of lead and cadmium than males, but there were no gender differences in mercury, selenium, chromium, manganese, and copper despite the marked sexual dimorphism in body size. There were no significant correlations of bird weight or wing length and metal and selenium concentrations, and few correlations among metal and selenium concentrations in the feathers.
大多数关于重金属和硒的研究并未考察鸟类组织中浓度随体型或性别的差异，或者未能发现这种差异。对成年黑腹剪嘴鸥（Rynchops niger）胸羽中的重金属和硒浓度进行了分析，该物种存在显著的两性体型差异，雄性平均比雌性重35%。雌性体内铅和镉的浓度显著高于雄性，但尽管体型存在显著的两性差异，汞、硒、铬、锰和铜的浓度在两性之间并无差异。鸟类体重或翅长与金属和硒浓度之间没有显著相关性，羽毛中金属和硒浓度之间的相关性也很少。
