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近代科学研究扬子鳄的历史,已有百余年之久。Fauvel(1879)将扬子鳄订名为AlligatorSinensis,Barbour(1922)、Pope(1932)肖之(1934)对扬子鳄也有研究。朱承琯等自五十年代起,研究扬子鳄的生态及其分布的变迁。近年来,美国动物学者在1977年至1979年,对扬子鳄的捕养繁殖曾发表论文。七十年代至八十年代,笔者、安徽省野生动物资源调查队、浙江省林业部门,在前人工作基础上,继续对扬子鳄进行数量统计及生态研究。1980年7月,上海动物园有四条雌鳄产卵,经过72天的孵化,于9月下旬孵出第一批幼鳄共12条。浙江省宁波动物园饲养的一对扬子鳄,于1982年8月12日产卵27个,经人工孵化后,10月21日第一条破壳而出,5天内已孵出9条。 相似文献
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The Chinese "Yangtze" alligator is a rare reptile that has been listed as an "endangered species" by the United Nations, so its preservation has become an urgent task. A study of its habitats through analysis of their Landsat images will provide a scientific basis for the government departments concerned to select the best locations for its breeding.The'Chinese alligator is a subtropical reptile of freshwater rivers, lakes and ponds. Found only in China, it is now distributed only in the border region between the three provinces of Anhui, Zhejiang and Jiangsu. On the basis of previous investigations by Chinese scientists, and from an analysis and interpretation of their Landsat images, we made a special study, review, and classification of the natural environment of the alligator's present habitats (and the modern changes in the natural background of these hatitats) so that the government departments concerned with the preservation of the reptiles may have a scientific basis for determining the best loc 相似文献
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