The enemy release hypothesis (ERH) postulates that during the invasion process an introduced species is released from the natural enemies that regulate its populations, promoting its invasion success in the new environment. Callosciurus erythraeus is a sciurid native to Southeast Asia that has been successfully introduced into Argentina and other Asian and European countries. The aim of this study was to provide new parasitological data on this species and to compare it with studies in native and other introduced ranges under the framework of the ERH. We proposed two working hypotheses: (1) an analysis at the community level to compare the prevalence, abundance and identity of parasites of C. erythraeus and sympatric native mammals in the main invasion focus of Argentina, and (2) an analysis at the biogeographical level to compare parasite richness in native and introduced ranges of C. erythraeus and parasite prevalence and richness among introduced regions with different invasion success (using population density and spread as proxy variables). The community analyses indicated that C. erythraeus has lost its specific parasites in Argentina and that it has a lower level of parasitism than other native mammals. The biogreographical analyses indicated a lower macroparasite richness of C. erythraeus in introduced ranges compared to its native range. However, parasite richness in introduced ranges was not associated with population density and spread. The negative correlation between parasite prevalence and population parameters was mainly due to the low parasite prevalence of C. erythraeus in Argentina where this species shows high density and spread. The release of parasites of C. erythraeus in comparison to its native and other introduced ranges, the low acquisition of generalist parasites and the high population density and spread reached in Argentina are mostly in agreement with the expected outcomes based on the ERH. Further studies are needed to better understand the role of the ERH in the invasion success of this species.

敌人释放假说（ERH）假定，在入侵过程中，从控制其种群的天敌中释放出一个引入的物种，从而促进了其在新环境中的入侵成功。红毛Callosciurus erythraeus是东南亚的一种孢子虫，已成功引入阿根廷以及其他亚洲和欧洲国家。这项研究的目的是提供有关该物种的新寄生虫学数据，并将其与在ERH框架下在本地和其他引进范围内进行的研究进行比较。我们提出了两个可行的假设：（1）在社区一级进行分析，以比较红红假单胞菌的寄生虫患病率，丰度和身份（2）在生物地理学水平上进行比较，以比较当地和引进的红斑梭菌的寄生虫丰富度，以及入侵成功率不同的引进地区之间的寄生虫流行度和丰富度（使用种群）密度和传播作为代理变量）。社区分析表明，红血球菌在阿根廷已经失去了其特定的寄生虫，并且其寄生虫的水平低于其他本地哺乳动物。所述biogreographical分析表明的下macroparasite丰富C.赤与原始范围相比，在引入范围内。然而，在引入范围内的寄生虫丰富度与种群密度和传播无关。寄生虫患病率与种群参数之间的负相关性主要是由于阿根廷的美洲红C虫的寄生虫患病率低，该物种显示出高密度和高分布。与原生境和其他引进范围相比，红斑梭菌的寄生虫释放，通体寄生虫的获取率低以及阿根廷达到的高人口密度和扩散，大部分与基于ERH的预期结果相符。需要进一步的研究，以更好地了解ERH在该物种入侵成功中的作用。