ABSTRACT: A histological survey of the commercially edible mussels Mytilus platensis and M. chilensis from wild and cultivated populations along the coast of Patagonia, Argentina (42°00’ to 54°47’S), was carried out to determine their health status. Diagnostic results included 3 types of inflammatory responses (infiltrative, nodular, and encapsulation), disseminated neoplasia disease, 2 abnormal reproductive conditions (gonadal atresia and intersex), prokaryotic inclusions, protozoans, and metazoans. Pathogen prevalence and infection intensity among mussels of different sampling sites and between those of wild and cultivated populations were compared. Inflammatory responses were recorded in all mussels from all sites, while disseminated neoplasia only occurred in the most southern cultivated M. chilensis. Intracellular prokaryotic inclusions were broadly distributed in the mussels from both northern and southern Patagonian coasts. Ciliates showed the highest prevalence among wild mussels from the colder waters of Bahía Brown. Turbellaria were recorded at higher prevalence in cultured mussels (41.7%), and trematode metacercariae occurred exclusively in intertidal wild mussels. None of the parasites found appears to be a problem to the fishery or farming, although disseminated neoplasia should be monitored. In addition, we found that mytilid species coexisting with M. platensis (Aulacomya atra and Perumytilus purpuratus) at one location shared the same pathological conditions and parasites, which differed from those of M. platensis at a distant locality. These results suggest that pathological conditions and parasites were influenced more by ecological habitat factors than by the species of mussels present, based on similar parasite assemblages found among closely related mytilid hosts in the same geographical area.

中文翻译：

---

大西洋西南大西洋阿根廷巴塔哥尼亚海岸野生和养殖贻贝的疾病和寄生虫。

摘要：商业食用贻贝Mytilus platensis和M. chilensis的组织学调查从阿根廷巴塔哥尼亚海岸（42°00'至54°47'S）的野生和栽培种群中进行了调查，以确定它们的健康状况。诊断结果包括3种类型的炎症反应（浸润性，结节性和包囊性），弥漫性瘤形成疾病，2种异常生殖状况（性腺闭锁和双性恋），原核生物包涵体，原生动物和后生动物。比较了不同采样点贻贝之间以及野生种群和耕种种群之间的病原菌流行度和感染强度。在所有地点的所有贻贝中都记录了炎症反应，而仅在最南部的栽培M. chilensis中发生了弥漫性瘤形成。胞内原核内含物广泛分布在巴塔哥尼亚北部和南部海岸的贻贝中。纤毛虫在来自巴伊亚·布朗（BahíaBrown）较冷水域的野生贻贝中显示最高的流行率。贻贝在养殖贻贝中的发生率较高（41.7％），而吸虫线meta虫仅发生在潮间带野生贻贝中。尽管应监测弥漫性瘤样增生，但发现的寄生虫对渔业或养殖业均没有问题。此外，我们发现，mytilid物种与共存M.螺旋藻（Aulacomya ATRA和Perumytilus紫石在一个位置）共享相同的病理状况和寄生虫，其从那些不同M.螺旋藻在遥远的地方 这些结果表明，基于在相同地理区域内密切相关的Mytilid寄主中发现的相似寄生虫组合，病理条件和寄生虫受生态栖息地因素的影响比受贻贝物种的影响更大。