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在一个临灭绝的系统中,利用池水周期操纵来管理侵入性杂交物

Robert D Cooper^1,2, H Bradley Shaffer^1,2

¹Department of Ecology and Evolutionary Biology, University of California, Los Angeles, Los Angeles, California, USA.

Conservation biology : the journal of the Society for Conservation Biology

|August 8, 2023

概括

缩短繁殖池的持续时间会损害加利福尼亚原生虎 (CTS) 和入侵杂交物种. 水周期管理本身不会有利于CTS,但可能会限制春季游泳池中的混合生产力.

科学领域:

保护遗传学保护遗传学
生态生态学生态生态学
两动物生物学

背景情况:

临灭绝的加利福尼亚虎 (CTS) 和入侵的禁止虎 (BTS) 之间的杂交威胁到CTS的遗传完整性.
杂交群已经取代了加利福尼亚中部的本地CTS种群,影响了春季游泳池生态系统.

研究的目的:

测试缩短繁殖池水周期是否有利于本地CTS基因型而不是杂交.
评估水周期持续时间对幼虫存活率和转化时质量的影响.

主要方法:

一个大规模的基因组信息的实地实验,使用14个半自然的池.
用5237基因外基因捕获阵列跟踪非本地基因频率.
利用贝叶斯式和通用线性模型来量化水周期对健康的影响.

主要成果:

非常短的水周期显著减少了原生幼虫和杂交幼虫的质量和生存时间.
观察到压倒性的证据表明混合物在转化时的生存和体型优越.
86个基因对水周期驱动的选择表现出显著的反应.

结论:

仅仅是水周期管理不足以转移选择,有利于本地CTS基因型.
缩短池水周期可能会限制混合池的生产力,有助于保护工作.
这项研究强调了水周期管理对于控制入侵水生物种的重要性.

关键词:

阿姆比斯托马加利福尼亚州这是一个保护的保护.保护保护保护一种入侵性物种.这是一个混合的杂交.水时期是指水中时期.混合化混合化混合化这是一个水分期.侵入性物种是一种入侵性物种.萨拉曼德拉虎虎虎类的萨拉曼德尔虎类的萨拉曼德尔

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