Home and away and home again: discovery of a native reproductive strategy of the globally invading sea anemone Diadumene lineata (Verrill, 1869) in a satellite population
Home and away and home again: discovery of a native reproductive strategy of the globally invading sea anemone Diadumene lineata (Verrill, 1869) in a satellite population
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DOI：
10.1007/s10530-019-01940-y
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发表时间：
2019-05-01
影响因子：
2.9
通讯作者：
Carlton, James T.
中科院分区：
文献类型：
--
作者：
Newcomer, Katherine;Flenniken, Megan M.;Carlton, James T.
生殖策略，无论是有性的还是无性的，都是非土著物种成功引进和传播的关键方面。西太平洋海葵(Verrill，1869年)是世界上分布最广的海葵，由于多次引进，据信只在其家园范围外通过无性繁殖方式繁殖。在过去的100年里，据报道，在日本本土以外的地区，没有同时出现雄性和雌性的种群。本文报道了在美国俄勒冈州库斯湾首次发现同域生殖性雄性(带精子)和雌性(带卵)线虫，并经组织学分析证实。鉴于其他地方只有单一性别引入种群的报道，在美国太平洋西北部的这个海湾，两性的存在可能与日本和库斯湾之间直接运输木材和木材的历史造成的高而持续的繁殖压力有关。对该物种的新颖的现代引进，其中表现出以前仅与本地种群相关的生殖特征，可能会影响该物种未来的入侵成功和传播。
Reproductive strategies, whether sexual or asexual, are critical aspects of introduction success and spread for non-indigenous species. The Western Pacific Diadumene lineata (Verrill, 1869), the world's most widely distributed sea anemone due to numerous introductions, is believed to reproduce only by asexual means outside of its home range. Over the past 100years, no populations with both males and females have been reported to co-occur outside of its native Japan. We report the first discovery of sympatric reproductive male (sperm-bearing) and female (egg-bearing) D. lineata in Coos Bay, Oregon, USA, confirmed by histological analysis. Given that only single gender introduced populations have been reported elsewhere, the presence of both genders in this US Pacific Northwest bay may be linked to high and continuous propagule pressure resulting from a history of intensive lumber and timber shipping directly between Japan and Coos Bay. Novel modern-day introductions of this species, in which reproductive traits previously only associated with native populations are manifested, could influence the future invasion success and spread of this species.