Jovani Roger, Amo Luisa, Arriero Elena, Krone Oliver, Marzal Alfonso, Shurulinkov Peter, Tomás Gustavo, Sol Daniel, Hagen Jana, López Pilar, Martín José, Navarro Carlos, Torres Jordi
Department of Applied Biology, Estación Biológica de Doñana (CSIC), Avda Maria Luisa s/n, 41013 Sevilla, Spain.
Parasitol Res. 2004 Sep;94(2):155-7. doi: 10.1007/s00436-004-1186-5.
The simultaneous occurrence of male and female gametocytes inside a single host blood cell has been suggested to enhance apicomplexan transmission ["double gametocyte infection (DGI) hypothesis"]. We did a bibliographic search and a direct screen of blood smears from wild birds and reptiles to answer, for the first time, how common are these infections in the wild. Taking these two approaches together, we report here cases of DGIs in Plasmodium, Haemoproteus, Leucocytozoon and Hepatozoon, and cases of male-female DGIs in Haemoproteus of birds and reptiles and in Leucocytozoon of birds. Thus, we suggest that DGIs and male female DGIs are more widespread than previously thought, opening a new research avenue on apicomplexan transmission.
单个宿主血细胞内同时出现雄性和雌性配子体被认为可增强顶复门原虫的传播["双配子体感染（DGI）假说"]。我们进行了文献检索，并直接筛查了野生鸟类和爬行动物的血涂片，首次回答了这些感染在野外的常见程度。综合这两种方法，我们在此报告疟原虫、血变虫、白细胞虫和肝簇虫中的双配子体感染病例，以及鸟类和爬行动物血变虫和鸟类白细胞虫中的雌雄双配子体感染病例。因此，我们认为双配子体感染和雌雄双配子体感染比之前认为的更为普遍，为顶复门原虫传播开辟了新的研究途径。
