| 外来种入侵的遗传侵蚀 |
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| 引用本文： | 李霖,姚云珍.外来种入侵的遗传侵蚀[J].扬州教育学院学报,2007,25(4):77-80. |
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| 作者姓名： | 李霖 姚云珍 |
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| 作者单位： | 扬州教育学院,江苏,扬州,225009 |
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| 摘 要： | 外来种入侵对本土生物多样性的遗传侵蚀相当普遍。外来种入侵造成局部野生、原始种群消失,导致遗传材料减少;外来种入侵通过种群破碎化导致土著种遗传结构改变;通过杂交导致土著种遗传基因被"稀释"或遗传同化、远交衰退、基因污染等;通过杂种优势排挤、淘汰土著种。此外,转基因生物、引种及遗传改良等人类行为都在一定程度上加剧了对各类遗传资源的侵蚀。
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| 关 键 词： | 外来入侵种 生物多样性 遗传侵蚀 |
| 文章编号： | 1008-6536(2007)04-0077-04 |
| 修稿时间： | 2007年5月18日 |
The Heredity Corrosion of Foreign Species |
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| LI Lin,YAO Yun-zhen.The Heredity Corrosion of Foreign Species[J].Journal of Yangzhou College of Education,2007,25(4):77-80. |
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| Authors: | LI Lin YAO Yun-zhen |
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| Abstract: | The heredity corrosion of foreign species on the multiplicity of the native species is popular,which leads to the elimination of partial wild and primitive species and the reduction of heredity material;the foreign species invasion causes changes of heredity structure of native species by breaking population;causes the "delusion",assimilation,pushing aside or elimination of heredity gene of native species by hybridization.Besides,plants of gene transference introduction of species,and improvement of gene done by human behavior all intensify the corrosion of heredity resources. |
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| Keywords: | foreign species multiplicity of species heredity corrosion |
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