Laboratorio de Parasitología Marina, Facultad de Ciencias del Mar, Edificio de Ciencias Experimentales, Universidad de Vigo, Campus as Lagoas-Marcosende s/n, 36310 Vigo (Pontevedra), Spain.
J Invertebr Pathol. 2009 Nov;102(3):214-9. doi: 10.1016/j.jip.2009.08.010. Epub 2009 Aug 15.
In this work, we describe the occurrence of irregular shaped green aggregations in the mantle, gill filaments, adductor muscle, visceral mass and haemolymph of wild mussels (Mytilus galloprovincialis) collected from the Vigo estuary (Galicia, NW Spain). Microscopic examination of these masses revealed that they consist of intracellular green algae which are spherical to oval in shape, 5 microm in length and 3 microm in width, without flagella and with a smooth surface. The algal cells present a small single nucleus, a mitochondrion, 1-2 parietal chloroplasts and lack pyrenoids. Reproduction is by formation of 2-4 autospores or daughter cells. Pigment analysis reveals the presence of photopigments typical of green algae in addition to alloxanthin, diadinoxanthin and diatoxanthin. These carotenoids are noted for the first time in a parasitic chlorophyte. The signs of infection, together with the morphological observations, suggest that this parasitic algae may be Coccomyxa parasitica. However, further molecular studies are required for confirmation. This is the first report of Coccomyxa algae parasitizing the species M. galloprovincialis.
在这项工作中，我们描述了在从维哥河口（西班牙西北部加利西亚）采集的野生贻贝（贻贝）的套膜、鳃丝、闭壳肌、内脏团和血淋巴中不规则形状的绿色聚集物的发生。对这些团块的显微镜检查表明，它们由呈球形至椭圆形的、长 5 微米、宽 3 微米的、无鞭毛且表面光滑的细胞内绿藻组成。藻类细胞具有一个小的单核、一个线粒体、1-2 个周质叶绿体且无淀粉核。繁殖是通过形成 2-4 个自孢子或子细胞。色素分析表明，除了黄质、硅藻黄素和二氧甲藻黄素外，还存在典型的绿藻光合色素。这些类胡萝卜素是首次在寄生绿藻中发现的。感染迹象以及形态观察表明，这种寄生藻类可能是寄生性的 Coccomyxa。然而，还需要进一步的分子研究来确认。这是 Coccomyxa 藻类寄生贻贝属物种的首例报道。
