The parasite-vector interaction of Chagas disease is still poorly understood and the understanding of this relationship can help in the development of new strategies to control Trypanosoma cruzi transmission, which is the etiological agent of this disease. Considering the need to know if T. cruzi can cause some pathology in the reproductive system of the Chagas disease vectors, we investigated the spermatogenesis of Triatoma infestans infected by T. cruzi through histological and cytogenetic analysis. Trypanosoma cruzi Bolivia strain infection was not pathogenic for the reproductive system of T. infestans, because all the analyzed males had normal spermatogenesis, with all phases (spermatocytogenesis, meiosis and spermiogenesis) happening without any change. Thus, we demonstrated that the presence of T. cruzi Bolivia strain does not have influence in the spermatogenesis of T. infestans and we suggest that the influences on reproductive system observed for other species were a result of the action of the parasite on gametogenesis of females.

南美锥虫病的寄生虫-载体相互作用仍然知之甚少，对这种关系的理解可以帮助开发新的策略来控制克氏锥虫传播，这是该病的病原体。考虑到需要了解克氏锥虫是否会在南美锥虫病病媒的生殖系统中引起某些病理学，我们通过组织学和细胞遗传学分析调查了克氏锥虫感染的Triatoma infestans的精子发生。克鲁斯锥虫锥虫菌株感染对T. infestans的生殖系统无致病性，因为所有分析的男性都具有正常的精子发生，所有阶段（精子细胞生成，减数分裂和精子发生）的发生都没有任何变化。因此，我们证明了存在锥虫玻利维亚株不具有在精子发生的影响T.晚疫病，我们建议对其他物种的发现生殖系统的影响是寄生虫对女性的配子作用的结果。