Freire Simone Mousinho, Leal Anangela Ravena da Silva, Knoff Marcelo, Gomes Delir Corrêa, Santos Jeannie Nascimento Dos, Giese Elane Guerreiro, Silva Reinaldo José da, Mendonça Ivete Lopes
Laboratório de Sanidade Animal, Centro de Ciências Agrárias, Universidade Federal do Piauí - UFPI, Teresina, PI, Brasil.
Laboratório de Helmintos Parasitos de Vertebrados, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, RJ, Brasil.
Rev Bras Parasitol Vet. 2017 Jul-Sep;26(3):359-365. doi: 10.1590/S1984-29612017011. Epub 2017 Mar 16.
Chapiniella variabilis (Chapin, 1924), a strongylid nematode, was collected parasitizing the large intestine of the tortoises Chelonoidis carbonarius (Spix, 1824) (Cc) and C. denticulatus (Linnaeus, 1766) (Cd) in the Zoobotanical Park of the municipality of Teresina, state of Piauí, Brazil. The taxonomic identification was based on morphological and morphometric features, using bright-field and scanning electron microscopy. The present study adds new observations on the morphology, mainly relating to the mouth papillae, external and internal leaf-crown elements, excretory pore, deirids and male and female posterior end. The parasitic indices of prevalence (P), mean intensity (MI), mean abundance (MA) and range of infection (RI) of C. variabilis in these two tortoise species were: P = 100%, MI = 833.3, MA = 833.3, RI = 500-1,500 (Cc); P = 100%, MI = 472.2, MA = 472.2, RI = 333-500 (Cd). This record expands occurrences of C. variabilis to a new host, C. carbonarius, and to another state in Brazil, in the Neotropical region of South America. Adjustment to host management with the aim of improving hygiene and health conditions is suggested.
变异查平线虫（Chapiniella variabilis）（查平，1924年），一种圆线虫，是在巴西皮奥伊州特雷西纳市动植物园的红腿陆龟（Chelonoidis carbonarius）（斯皮克斯，1824年）（Cc）和黄腿象龟（C. denticulatus）（林奈，1766年）（Cd）的大肠中采集到的，当时它们正寄生于这些龟体内。分类鉴定基于形态学和形态测量特征，使用了明视野显微镜和扫描电子显微镜。本研究增加了对该线虫形态的新观察结果，主要涉及口乳头、内外叶冠结构、排泄孔、侧尾腺孔以及雌雄虫后端。变异查平线虫在这两种龟类中的寄生指标，即患病率（P）、平均感染强度（MI）、平均丰度（MA）和感染范围（RI）分别为：P = 100%，MI = 833.3，MA = 833.3，RI = 500 - 1500（Cc）；P = 100%，MI = 472.2，MA = 472.2，RI = 333 - 500（Cd）。这一记录将变异查平线虫的宿主范围扩展到了新宿主红腿陆龟，并扩展到了南美洲新热带地区的巴西另一个州。建议调整宿主管理方式，以改善卫生和健康状况。
