How difficult is it to reintroduce a dragonfly? Fifteen years monitoring Leucorrhinia dubia at the receiving site
How difficult is it to reintroduce a dragonfly? Fifteen years monitoring Leucorrhinia dubia at the receiving site
复制标题
重新引入蜻蜓有多困难？
DOI：
10.1016/j.biocon.2017.12.011
复制
发表时间：
2018
影响因子：
5.9
通讯作者：
L. Choleva
中科院分区：
文献类型：
--
作者：
A. Dolný;Hana Šigutová;Stanislav Ožana;L. Choleva
保护易位（包括重新引入）是野生动物保护的潜在有力工具，其使用在世界范围内有所增加。然而，大多数研究都集中在脊椎动物身上，而忽视了易位的长期影响和生态进展。此外，这些项目很少针对昆虫。本研究报告的长期持久性的人口ofLeucorrhythinia dubia（蜻蜓目：Libellulidae）重新引入到人工创造的沼泽池在捷克共和国。80（笔）最终instarL. alarararcus易位在2001年，并在重新引入网站的组合进行了监测15年后，幼虫释放。在2015-2017年，使用捕获-标记-再捕获方法、Jolly-Seber模型和分泌物收集来评估易位人群的人口统计学。微卫星分析进行评估源和重新引入的群体的遗传变异。在监测期间，种群规模增加（80个释放的幼虫与108-115个蜕皮和75个成年人在研究结束时），并且L. alababe成为优势种，而当地的昆虫组合的组成和丰度没有实质性变化。这些结果表明，重新引入是有效的措施，为保护野生动物，迁移相对较少的个人导致建立一个自我维持的人口。使用（笔）末龄幼虫是最佳的易位，但一个高质量的栖息地的可用性和与自然保护当局的积极合作是成功的结果至关重要。遗传分析表明，易位群体可能作为一个来源的遗传变异的原始群体，如果耗尽。
Conservation translocations (including reintroductions) are potentially powerful tools for wildlife conservation, and their use has increased worldwide. However, most studies have focused on vertebrates, with the long-term impact and ecological progress of translocations being neglected. Moreover, such projects rarely target insects. The present study reports the long-term persistence of a population ofLeucorrhinia dubia(Odonata: Libellulidae) reintroduced to artificially created bog pools in the Czech Republic. Eighty (pen)ultimate instarL.dubialarvae were translocated in 2001, and the dragonfly assemblage at the reintroduction site was monitored for 15 years following larvae release. In 2015–2017, the capture-mark-recapture method, the Jolly-Seber model, and exuviae collection were used to evaluate the demography of the translocated population. Microsatellite analysis was performed to assess the genetic variability of source and reintroduced populations. Over the monitored period, population size increased (80 larvae released vs. 108–115 exuviae and 75 adults at the end of the study) andL.dubiabecame a dominant species, whereas the composition and abundance of the local dragonfly assemblage were not substantially changed. These results indicate that reintroductions are effective measures for dragonfly conservation, as translocating a relatively small number of individuals led to the establishment of a self-sustaining population. Using (pen)ultimate instar larvae was optimal for dragonfly translocation, but the availability of a high-quality habitat and the active collaboration with nature conservation authorities were vital for the successful outcome. Genetic analysis suggested that the translocated population might serve as a source of genetic variation for the original population, if depleted.