Robledo J A, Figueras A
Instituto de Investigaciones Marinas-CSIC, Equipo de Biología y Patología de Organismos Marinos, Vigo, Spain.
J Parasitol. 1995 Jun;81(3):354-63.
Samples of a marteiliad parasite in Mytilus galloprovincialis Lmk. from NW Spain were identified as Marteilia refringens, using light and electron microscopy. The most important lesions in the mussel tissues were found in the digestive tubules at the moment of the release of the sporangia, resulting in a breakage of the epithelial cells of the digestive tubules. The plasmodia of a Marteilia-like organism were also found in the gills, accompanied by a severe host reaction in 1 of the 4,200 examined mussels. The prevalence of the M. refringens parasite was monitored for 4 yr and correlation was found with prevalence, site, and depth of mussel culture. No correlation was found with geographical origin of the mussels. Mussels collected from the inner part of the Ría de Vigo were more frequently infected (38.5%) than those from the middle (29.0%) and outer parts (5.5%). Mussels from 2-m samples showed a higher mean prevalence of M. refringens than those from the 5-m samples (13.3 and 8.3%, respectively).
利用光学显微镜和电子显微镜，对来自西班牙西北部的加利福尼亚贻贝中一种马尔太虫寄生虫的样本进行鉴定，确定为折射马尔太虫。在孢子囊释放时，贻贝组织中最重要的损伤出现在消化小管，导致消化小管上皮细胞破裂。在鳃中也发现了一种类似马尔太虫生物的多核体，在4200只检查的贻贝中有1只出现了严重的宿主反应。对折射马尔太虫寄生虫的流行情况进行了4年监测，发现其与贻贝养殖的流行率、地点和深度相关。未发现与贻贝的地理来源相关。从维哥湾内部采集的贻贝感染率（38.5%）高于中部（29.0%）和外部（5.5%）。来自2米深处样本的贻贝折射马尔太虫平均流行率高于5米深处样本（分别为13.3%和8.3%）。
