Buckner S C, Nickol B B
J Parasitol. 1975 Dec;61(6):996-8.
A two-way fixed model analysis of variance was used to test Moniliformis moniliformis and M. clarki for inter- and intraspecific differences with respect to 7 morphological characters used to distinguish species of the genus. M. clarki was sexually dimorphic in more characters than was M. moniliformis when specimens from their usual definitive hosts, Spermophilus tridecemlineatus and Rattus norvegicus, respectively, were compared. More characters were sexually dimorphic in both species reared in hamsters, Mesocricetus auratus, than in their usual definitive hosts or M. clarki from rats. Moniliformis clarki and M. moniliformis (n = 25 each sex, each species) from their usual hosts were significantly different at the 1% level in 6 of 7 characters studied. Further M. clarki of either sex from ground squirrels did not differ significantly in any of the 7 characters from those of the same sex from rats. When reared in hamsters, the range in number of longitudinal rows of proboscis hooks of female M. moniliformis included that of M. clarki, but the 2 species were distinct in each of the other features which distinguished them in rats and ground squirrels.
采用双向固定效应方差分析，以检验念珠棘头虫（Moniliformis moniliformis）和克拉克棘头虫（M. clarki）在用于区分该属物种的7个形态特征方面的种间和种内差异。当分别比较来自其通常终末宿主——十三条纹地松鼠（Spermophilus tridecemlineatus）和褐家鼠（Rattus norvegicus）的标本时，克拉克棘头虫在比念珠棘头虫更多的特征上表现出两性异形。与在其通常终末宿主中或来自大鼠的克拉克棘头虫相比，在金黄仓鼠（Mesocricetus auratus）中饲养的这两个物种在更多特征上表现出两性异形。来自其通常宿主的克拉克棘头虫和念珠棘头虫（每个物种、每个性别各n = 25）在所研究的7个特征中的6个特征上，在1%水平上存在显著差异。此外，来自地松鼠的任一性别的克拉克棘头虫与来自大鼠的同性别的克拉克棘头虫在7个特征中的任何一个特征上均无显著差异。当在仓鼠中饲养时，雌性念珠棘头虫吻钩纵列数的范围包括了克拉克棘头虫的范围，但在大鼠和地松鼠中区分它们的其他每个特征上，这两个物种都是不同的。
