e Effect Of Environmental Temperature In The Growth And Development Of Echinococcus granulosus (Batsch1786)

Ali Mardan Al-Naimi, Usama; H Rahif, R

	e Effect Of Environmental Temperature In The Growth And Development Of Echinococcus granulosus (Batsch1786)
The Iraqi Journal of Veterinary Medicine (IJVM)
Article 1, Volume 29, Issue 1, 2005, Pages 64-75 PDF (0 K)
Authors
Usama Ali Mardan Al-Naimi; R H Rahif
Abstract
The study highligthened on the effect of the field enviromental & controlled tempratures in the experimental infection with Echinococcus granulosus in dogs, n = 6 local dogs, at the age of 1.5-3 months, were used . Each dog was dosed with 8658 protoscoleces with 92.78% viability for 28 and 33 days post infection (PI). Animals were subdivided into 2groups. Results denoted that the low enviromental temperatures retarded the growth and development of E. granulosus.All tapeworms, isolated from the small intestine of dogs housed under controlled temperatures, with the average of 21.85ºc(group1),had 3 proglottids,whereas those isolated from dogs housed under field temperatures, with the average of 11.12ºc (group2) ,had only 2 proglottids.The average total length of E. granulosus ,at the age of 28 days, isolated from group1,was1.70±0.24mm,longer than those that isolated from group2,with the average length of 1.13±0.06mm.The average total length of E.granulosus ,at the age of 33 days , isolated from group 1 and 2 ,was 2.68±0.35 mm and 1.67±0.21, respectively . Significant statistical differences (p<0.05) were found in the average total length of E.granulosus isolated from both groups at different ages. Echinococcus granulosus isolated from group1 were found mature more than those isolated from group2,and the number of rostellar hooks of the former were also more than those of the 2nd group, the number of rostellar hooks were, at the age of 33 days,were34.53±2.19 and29.47±0.62 for the 1st and 2nd groups.

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