Lainson R, Da Silva F M M, Franco C M, De Souza M C
Departamento de Parasitologia, Instituto Evandro Chagas, Av. Almirante, Barroso 492, Bairro Marco, 66090-000 Belém, Pará, Brasil.
Parasite. 2008 Dec;15(4):531-8. doi: 10.1051/parasite/2008154531.
Tetrasporocystic, dizoic oocysts of reptiles have been separated by some authors into the genera Eimeria, Choleoeimeria and Acroeimeria (Protozoa: Eimeriidae), based on the site and mode of development of their endogenous stages. The majority of Eimeria species have been, and still are, however, described on oocyst morphology alone. Four different oocysts with this basic morphology were encountered in the faeces of Brazilian tortoises, Geochelone carbonaria Spix, 1824 and are assigned to the genus Eimeria, with the view that they can readily be transferred to the genus Choleoeimeria or Acroeimeria if this is indicated by a future examination of their endogenous development. A morphological comparison distinguishes the oocysts from those of Eimeria spp., previously described in chelonids of the family Testudinidae, and the names E. amazonensis, E. carbonaria, E. carajasensis and E. wellcomei n. spp. are proposed. Coccidial infection appears to be common in G. carbonaria, with three of seven animals examined passing oocysts. Oocysts of Isospora rodriguesae n. sp. (Protozoa: Eimeriidae) are described in the faeces of Geochelone denticulata Linnaeus, 1766. They are morphologically very different from those of Isospora testudae, Davronov, 1985 in Testudo horsfieldi. Eimeria motelo Hůrková et al., 2000, previously described in Geochelone denticulata from Peru, is here recorded in the some chelonid from Amazonian Brazil.
一些作者根据内源性发育阶段的部位和方式，将爬行动物的四孢子囊、双宿主卵囊分为艾美耳属、球虫艾美耳属和顶孢艾美耳属（原生动物：艾美耳科）。然而，大多数艾美耳属物种过去是，现在仍然是仅根据卵囊形态来描述的。在1824年命名的巴西陆龟（Geochelone carbonaria Spix）粪便中发现了四种具有这种基本形态的不同卵囊，它们被归入艾美耳属，认为如果未来对其内源性发育的研究表明有必要，它们可以很容易地被转移到球虫艾美耳属或顶孢艾美耳属。形态学比较将这些卵囊与先前在陆龟科陆龟属中描述的艾美耳属物种的卵囊区分开来，并提出了新种亚马逊艾美耳球虫、卡氏艾美耳球虫、卡拉雅斯艾美耳球虫和惠康艾美耳球虫的名称。球虫感染在卡氏陆龟中似乎很常见，在检查的七只动物中有三只排出卵囊。在1766年命名的齿缘陆龟（Geochelone denticulata Linnaeus）粪便中描述了新种罗德里格斯等孢球虫（原生动物：艾美耳科）。它们在形态上与1985年在印度星龟（Testudo horsfieldi）中描述的龟等孢球虫非常不同。2000年在秘鲁的齿缘陆龟中首次描述的莫特洛艾美耳球虫，此次在巴西亚马逊地区的一些陆龟中也有记录。
