...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Parasitology >Benefits of fidelity: Does host specialization impact nematode parasite life history and fecundity?
【24h】

Benefits of fidelity: Does host specialization impact nematode parasite life history and fecundity?

机译：保真的好处：宿主的专业化会影响线虫寄生虫的生活史和繁殖力吗？

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

The range of hosts used by a parasite is influenced by macro-evolutionary processes (host switching, host-parasite co-evolution), as well as 'encounter filters' and 'compatibility filters' at the micro-evolutionary level driven by host/parasite ecology and physiology. Host specialization is hypothesized to result in trade-offs with aspects of parasite life history (e.g. reproductive output), but these have not been well studied. We used previously published data to create models examining general relationships among host specificity and important aspects of life history and reproduction for nematodes parasitizing animals. Our results indicate no general trade-off between host specificity and the average pre-patent period (time to first reproduction), female size, egg size, or fecundity of these nematodes. However, female size was positively related to egg size, fecundity, and pre-patent period. Host compatibility may thus not be the primary determinant of specificity in these parasitic nematodes if there are few apparent trade-offs with reproduction, but rather, the encounter opportunities for new host species at the micro-evolutionary level, and other processes at the macro-evolutionary level (i.e. phylogeny). Because host specificity is recognized as a key factor determining the spread of parasitic diseases understanding factors limiting host use are essential to predict future changes in parasite range and occurrence.
机译：寄生虫使用的宿主范围受宏观进化过程（宿主切换，宿主-寄生虫共同进化）以及宿主/寄生虫驱动的微观进化水平上的“遇到过滤器”和“兼容性过滤器”的影响生态和生理学。假设宿主的专业化会导致寄生虫生活史（例如生殖输出）方面的折衷，但尚未对此进行深入研究。我们使用先前发布的数据来创建模型，以检查寄主特异性与寄生虫动物线虫的生活史和繁殖重要方面之间的一般关系。我们的结果表明，在宿主特异性和平均专利期（首次繁殖时间），雌性大小，卵大小或这些线虫的繁殖力之间没有一般的权衡。然而，雌性大小与卵子大小，繁殖力和专利期正相关。因此，如果几乎没有与繁殖的权衡取舍，则宿主相容性可能不是这些寄生线虫特异性的主要决定因素，而是在微观进化水平上新宿主物种遇到的机会以及在宏观进化过程中的其他过程。进化水平（即系统发育）。由于宿主特异性被认为是决定寄生虫疾病传播的关键因素，因此了解限制宿主使用的因素对于预测寄生虫范围和发生的未来变化至关重要。

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