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首页> 外文期刊>Estuarine Coastal and Shelf Science >Revealing polychaetes invasion patterns: Identification, reproduction and potential risks of the Korean ragworm, Perinereis linea (Treadwell), in the Western Mediterranean
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Revealing polychaetes invasion patterns: Identification, reproduction and potential risks of the Korean ragworm, Perinereis linea (Treadwell), in the Western Mediterranean

机译：揭示多毛cha入侵模式：在地中海西部的韩国rag虫（Perinereis linea，Treadwell）的鉴定，繁殖和潜在风险

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摘要

An established population of the polychaetous annelid Perinereis linea (Treadwell) is reported for the first time outside its native distribution range (NW Pacific). This exotic worm has reached the Western Mediterranean (Mar Menor lagoon) via importing live fishing-bait as it is commonly used by anglers in Mar Menor lagoon, an area largely used for recreational fishing. To avoid confusion with other related species, and because the scientific name has been in synonymy for many years, P. linea is redescribed and illustrated. We focus on the reproductive biology and ecology of P. linea to help to understand its introduction, naturalization and spread along this coastal lagoon. Comparison between the Mediterranean population with a native population from South Korea revealed that the species exhibits a great reproductive plasticity and adaptability, which depends on the environmental conditions. Perinereis linea can reproduce after acquiring the epitokous form or prior to complete epitokal modification. In the Mar Menor lagoon population females release eggs asynchronically without completing epitokal modifications. However, under particular laboratory conditions females produce eggs synchronically and release them after complete epitokal transformations. Fertilization can occur internally in the female coelom, and females release zygotes and larvae through openings in their body walls; they are then incubated in gelatinous masses attached to the female parapodia. The sperm morphology is of the ent-aquasperm type. The eggs and larvae are attacked by symbiotic ciliate protozoa that feed on their yolk reserves. These foreign ciliates may act as carriers of disease in native beachworms and constitute an important risk for the ecosystem health. Finally, we provide recommendations on the prevention of the adverse effects that this exotic ragworm can cause in receiving ecosystems.
机译：首次报道了多杂种无脊椎动物近缘线虫（Treadwell）的种群数量超出其本地分布范围（西北太平洋）。这种外来蠕虫通过进口活鱼饵已经到达地中海西部（马尔梅诺泻湖），因为它在马尔梅诺泻湖（该地区主要用于休闲捕鱼）中的垂钓者普遍使用。为避免与其他相关物种混淆，并且由于科学名称已成为同义词多年，因此对P.linea进行了重新描述。我们专注于P. linea的生殖生物学和生态学，以帮助了解其在沿海泻湖中的引入，归化和传播。地中海种群与韩国本土种群之间的比较表明，该物种具有很大的繁殖可塑性和适应性，这取决于环境条件。 Perinereis linea可以在获得表位形式之后或在完全表位修饰之前繁殖。在Mar Menor泻湖种群中，雌性异步释放卵而未完成表皮修饰。但是，在特定的实验室条件下，雌性会同步产生卵，并在完全表皮转化后释放它们。受精可能发生在雌性腔体内，雌性通过体壁上的开口释放受精卵和幼虫。然后将它们在附着于雌性足突的胶状肿块中孵育。精子的形态是ent-aquasperm型的。卵和幼虫受到以卵黄储备为食的共生纤毛虫原生动物的攻击。这些外来纤毛可能充当本地沙滩虫的疾病携带者，对生态系统健康构成重要风险。最后，我们提供了有关预防这种外来蠕虫可能对接收生态系统造成不利影响的建议。

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