Valero M A, Marcos M D, Comes A M, Sendra M, Mas-Coma S
Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Spain.
J Helminthol. 1999 Dec;73(4):341-5. doi: 10.1017/s0022149x99000578.
A morphological study of adult liver flukes and eggs from sheep in a human fascioliasis endemic zone in the Northern Bolivian Altiplano showed that they belong to the species Fasciola hepatica. An exhaustive morphometric comparison with a F. hepatica population from Spanish sheep was made using image analysis and an allometric model: (y2m-y2)/y2 = c(y1m-y1)/y1[b, where y1 = body surface or body length, y2 = one of the measurements analyzed, y1m, y2m = maximum values towards which y1 and y2 respectively tend, and c, b = constants. Only slight allometric differences in worms were observed despite the geographic distance between both Spanish and Bolivian sheep populations and the very high altitude of the Bolivian Altiplano.
对玻利维亚北部高原地区一个人体肝片吸虫病流行区绵羊体内的成年肝片吸虫及其虫卵进行的形态学研究表明，它们属于肝片吸虫物种。利用图像分析和异速生长模型，对来自西班牙绵羊的肝片吸虫种群与该地区的肝片吸虫进行了详尽的形态测量比较：(y2m - y2)/y2 = c(y1m - y1)/y1[b，其中y1 = 体表或体长，y2 = 所分析的测量值之一，y1m、y2m分别是y1和y2趋向的最大值，c、b为常数。尽管西班牙和玻利维亚的绵羊种群存在地理距离，且玻利维亚高原海拔很高，但在虫体中仅观察到轻微的异速生长差异。
