...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Conservation Biology >Conservation genetics, extinction, and taxonomic status: a case history of the regal fritillary
【24h】

Conservation genetics, extinction, and taxonomic status: a case history of the regal fritillary

机译：保存遗传学，灭绝和生物分类状况：富豪贝母的病史

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

I investigated the phylogeography of mitochondrial DNA haplotypes in the regal fritillary (Speyeria idalia) to determine the conservation status of isolated populations in light of alternative definitions of species, subspecies, and evolutionarily significant units. A total of 1441 bases of partial cytochrome oxidase I and II genes were sequenced from 115 individuals In 18 populations located throughout the range of the species. A relatively disjunct population was differentiated with five synapomorphies, whereas all other populations had little haplotype variation and no apparent association between geographic and genetic distance. The divergence of the disjunct population may be due to either historical isolation among populations or extinction of intermediate populations within a cline. Genetic divergence due to the extinction of populations in fragmented habitat, termed "anthrovicariance" may be a generalizable phenomenon. Similar cases in insects have been described previously. If more cases can be elucidated, taxonomists will need to consider whether allopatry achieved through a natural vicariant event should be treated differently than that achieved via human-induced habitat loss. Mitochondrial DNA sequence divergence, along with ecological and natural-history data, suggest that the disjunct population of S. idalia is a distinct evolutionary lineage. Although taxonomic designation is not a simple task, the data indicate that the disjunct population is clearly of conservation concern. [References: 49]
机译：我调查了川贝母（Speyeria idalia）中线粒体DNA单倍体的系统地理学，以根据物种，亚种和进化上重要单位的替代定义来确定孤立种群的保护状况。从整个物种范围内的18个种群中的115个个体中，共测序了部分细胞色素氧化酶I和II基因的1441个碱基。相对分离的种群有五个亚同型，而所有其他种群几乎没有单倍型变异，并且地理和遗传距离之间没有明显的关联。离散种群的差异可能是由于种群之间的历史隔离或种群中中间种群的灭绝。由于零散的生境中种群的灭绝而导致的遗传差异，被称为“ anthrovicariance”可能是普遍的现象。先前已经描述了昆虫中的类似情况。如果可以阐明更多病例，分类学家将需要考虑通过自然杀人事件获得的同种异体症是否应与通过人类诱发的栖息地丧失获得的同种异体症区别对待。线粒体DNA序列的差异以及生态和自然历史数据表明，分离的S. idalia种群是一个独特的进化谱系。尽管分类学的分类不是一件容易的事，但数据表明，分离的种群显然值得保护。 [参考：49]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号