Stability of genetic diversity in an intertidal goby population after exposure to tsunami disturbance
Stability of genetic diversity in an intertidal goby population after exposure to tsunami disturbance
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DOI：
10.1111/maec.12377
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发表时间：
2016-10-01
影响因子：
1.1
通讯作者：
Kijima, Akihiro
中科院分区：
文献类型：
--
作者：
Hirase, Shotaro;Ikeda, Minoru;Kijima, Akihiro
大规模的海啸扰动对沿海海洋物种的遗传多样性和有效种群规模具有潜在的有害影响，评估这些影响有助于制定沿海海洋环境的保护战略。当地人群的潮间带虾虎鱼Chaenogobius annularis，分布在分散的岩石海滩的日本列岛，显示人口的独立性，没有重叠的世代，使这一理想的物种，研究海啸干扰的遗传多样性的影响。其中一些人口受到2011年东北太平洋沿岸地震海啸的影响。在这里，我们调查了遗传多样性的变化，该物种的当地人口，这是位于靠近震中的地震，跨队列之前和之后的海啸和海啸干扰的影响进行了评估。海啸后遗传多样性得以维持，有效种群规模没有变化。我们的研究结果表明，海啸干扰没有显着的影响，C.annulopsis的遗传多样性。
Massive tsunami disturbances have potentially detrimental effects on genetic diversity and effective population size of coastal marine species, and evaluating these effects can be useful for devising conservation strategies for coastal marine environments. Local populations of the intertidal goby Chaenogobius annularis, which are distributed on scattered rocky beaches of the Japanese Archipelago, show demographic independence without overlapping generations, making this an ideal species with which to study the effects of tsunami disturbance on genetic diversity. Some of these populations were affected by the tsunami of the 2011 off the Pacific coast of Tohoku Earthquake. Here, we investigated the change in genetic diversity of a local population of this species, which was located close to the epicenter of the earthquake, across the cohorts before and after the tsunami and evaluated the impact of the tsunami disturbance. Genetic diversity was maintained after the tsunami, and no change in the effective population size was observed. Our results suggest that the tsunami disturbance has had no marked impact on the genetic diversity of C.annularis.