[Characteristics of development and morphology of Echinococcus granulosus of camel origin in north Xinjiang].
OBJECTIVE
To study the characteristics of development and morphology of E. granulosus of camel origin in north Xinjiang.


METHODS
Six dogs were infected with protoscolices and then purged with arecoline at days 35 and 45 p.i.


RESULTS
Six dogs were heavily infected, the worm burden were 14,780 to 135,900 at days 35 and 45 p.i. At day 35 p.i. 77% of the had developed three segments, 10% contained mature eggs with fully developed "thickshelled" embryophores. Morphological studies revealed the following characteristics for 35-day-old worms; the mean length of the terminal segment accounted for 56% of the total worm length; the position of the sexually mature segment was always terminal (77%); the female reproductive system possessed an enlongated ovary with compact lobules; the Mehlis gland was covered by the vitelline gland and the testes were distributed throughout the segment arranging in a row posterior to the vitelline gland.


CONCLUSIONS
The E. granulosus of camel isolate in north Xinjiang can readily be distinguished from the horse, sheep, cattle and pig strains, but is similar to the camel (Camelus dromedarius) strain distributed in North Africa.
Jiao
W
W
National Hydatid Disease Centre of China, Xinjiang Institute for Endemic Diseases Control and Research, Urumqi 830002.
Chai
J
J
Osman
I
I
Qu
Q
Q
D000818:Animals; D002162:Camelus / Q000469:parasitology*; D004283:Dog Diseases / Q000469:parasitology; D004285:Dogs; D004443:Echinococcosis / Q000469:parasitology / Q000662:veterinary*; D004446:Echinococcus / Q000033:anatomy & histology* / Q000254:growth & development / Q000302:isolation & purification; D005260:Female; D008297:Male