The pig as an intermediate host for Taiwan Taenia infection.
Eggs (1000-100,000/animal) of Taiwan Taenia were inoculated per os into 14 Small-Ear-Miniature (SEM), 19 Landrace-Small-Ear-Miniature (L-SEM), and 5 Duroc-Yorkshire-Landrace (DYL) pigs. These animals were sacrificed 7-107 days after infection. Thirty-four pigs were found to be infected with Taiwan Taenia cysticerci and the infection rates of SEM, L-SEM, and DYL were 86%, 89% and 100% respectively. The cysticerci recovery rates of SEM, L-SEM and DYL pigs were 27.2%, 1.7% and 0.27% respectively. Cysticerci were recovered only from the livers and none were found in muscles, viscera or other parts of the carcasses. More cysticerci were located in the liver parenchyma (71%) than on the liver surface (29%). Taiwan Taenia cysticerci were smaller than those of classical T. saginata or T. solium. Moreover, Taiwan Taenia cysticerci had 2 rows of rudimentary hooklets on the scolex. The results of this study indicate that young pigs are good intermediate hosts for Taiwan Taenia and that the SEM pig is a satisfactory host for experimental studies with this tapeworm. These results were similar to other studies with different geographic strains of the T. saginata-like tapeworm in the Far East. These strains appear to be the same and possibly a new species.
Fan
P C
PC
Department of Parasitology, National Yangming Medical College, Taiwan, Republic of China.
Chung
W C
WC
Lin
C Y
CY
Wu
C C
CC
D000818:Animals; D003551:Cysticercosis / Q000469:parasitology*; D003552:Cysticercus / Q000033:anatomy & histology / Q000254:growth & development / Q000502:physiology*; D004195:Disease Models, Animal; D004198:Disease Susceptibility; D008099:Liver / Q000469:parasitology; D013552:Swine; D013556:Swine, Miniature / Q000469:parasitology*; D013624:Taiwan