Journal of Helminthology

Research Papers

Morphological description of Taenia saginata asiatica (Cyclophyllidea: Taeniidae) from man in Asia

P.C. Fana1, C.Y. Lina1, C.C. Chena1 and W.C. Chunga2

a1 Department of Parasitology, School of Medicine, National Yangming University

a2 University Department of Parasitology, Taipei Medical College, Taipei, Taiwan, Republic of China

Abstract

In order to clarify the taxonomic status of the Taenia saginata-like tapeworm in East Asia, the morphological characteristics of the adult and cysticercus of classical T. saginata (American, Swiss and Poland strains) and the Taiwan Taenia were compared in the present study. The morphologic characteristics of these two parasites are very similar. The protoscolex of cysticercus of the Taiwan Taenia has a sunken rostellum while that of classical T. saginata has only an apical pit. In addition, the rostellum of the Taiwan Taenia cysticercus is usually surrounded by two rows of rudimentary hooklets. However, this structure is rarely found in classical T. saginata. Based on the results of molecular studies and morphological characteristics, the T. saginata-like tapeworm in East Asia represents a subspecies of T. saginata, named T. saginata asiatica

(Accepted July 25 1995)