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Comparative Studies on Ancylostoma braziliense and Ancylostoma ceylanicum. I. The Adult Stage
The Journal of Parasitology
Vol. 57, No. 5 (Oct., 1971), pp. 983-989
Stable URL: http://www.jstor.org/stable/3277850
Page Count: 7
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Laboratory strains of Ancylostoma braziliense Gomes de Faria, 1910, and Ancylostoma ceylanicum Looss, 1911, originally obtained from domestic cats in Malaysia and Taiwan, respectively, were maintained in experimentally infected dogs and cats. Examination of adult worms revealed new morphological differences. When killed in hot water and preserved in 10% formalin, the female worms of A. braziliense usually were sharply flexed ventrally at the level of the vulva whereas those of A. ceylanicum were not, and in A. braziliense both sexes were relatively slender. In addition, the distance between transverse cuticular striations in A. ceylanicum was approximately twice that seen in A. braziliense. Moreover, a small tubercular process on the lateral margin of the buccal capsule in A. braziliense was not found in A. ceylanicum. By these features it was easy to distinguish A. braziliense from A. ceylanicum. Previously the size of the teeth was the only known differential feature in the female.
The Journal of Parasitology © 1971 The American Society of Parasitologists