Some Biological Studies On Hymenolepis Diminuta In Laboratory Animals

Nowadays the importance of the breeding of pathogen free laboratory animals for research centers is found necessary. Hence, the present study is to investigate the morphobiology of the common cestode, ” ~enolepis diminuta” affecting the albino rats and itintermediate host. It throws the light upon the detailed developmentof the adult worm in the defenitive host (Albino rats), as well as-»the larval stage, ” Cysticercoid in the intermediate host, the flourbeetle (Tribolium casteneum). Also, it includs the haematologicalchanges of experimentally infected albino rats. The development of the adult worm was morphologically studiedat 5, 10, 15 and 20 days post-infection. It reveald that the totallength of 5 days, old worm, was from L 44-7.75 (mean 3.1 + 0.85) mm,its maximum breadth from 78.8-220.1 (mean 130.63 + 14.5) u develoPing worms did not show any segmentation or internal structures. Such 10 days old worms were 26-83 (mean 39.2 + 5.5) m.m long and 0.75-1.2 (mean 1 + 0.04) mm in maximum breadth. Moreover theimmature, premature and mature Segments respectivley. However no gravid