Data presented in the paper "Invasive oysters as new hosts for native shell-boring polychaetes: using historical shell collections and recent field data to investigate parasite spillback in native mussels in the Dutch Wadden Sea"

<b>Research objective: </b><b>We investigated the potential spillback of the native shell-boring polychaete Polydora ciliata from invasive Pacific oysters (Crassostrea (Magallana) gigas) to native mussels (Mytilus edulis) in the Dutch Wadden Sea by means of a field survey and historical collections of M. edulis shells.</b><b><br></b><b>Type of research, method &amp; collection of data:</b><b>We sampled dead and alive specimens of blue mussels, Pacific oysters and periwinkles (Littorina littorea) at three intertidal locations at the Wadden Sea island Texel in order to determine host preferences of P. ciliata. To test, whether P. ciliata infections in mussels changed after the invasion of the Pacific oyster, we analysed x-ray images for P. ciliata burrows in mussel shells stemming from long-term monitoring campaigns from intertidal and subtidal areas of the western Dutch Wadden Sea.</b><br>

<b>研究目标：</b>本研究借助野外调查与荷兰瓦登海本土紫贻贝（Mytilus edulis）贝壳的历史馆藏标本，探究入侵性太平洋牡蛎（Crassostrea (Magallana) gigas）所携带的本土钻孔多毛类才女虫（Polydora ciliata）向本土紫贻贝发生宿主回溢的潜在可能性。<br><b>研究类型、方法与数据采集：</b>为明确才女虫（Polydora ciliata）的宿主偏好，我们于瓦登海特塞尔岛的3处潮间带点位，采集了蓝贻贝、太平洋牡蛎以及滨螺（Littorina littorea）的活体与死亡标本。为验证太平洋牡蛎入侵后紫贻贝的才女虫感染情况是否发生变化，我们分析了荷兰西部瓦登海潮间带及潮下带长期监测项目所获取的紫贻贝贝壳X光影像，以识别其中的才女虫钻孔痕迹。