| morphological characteristics of mesocestoides canislagopodis (krabbe 1865) tetrathyridia found in rock ptarmigan (lagopus muta) in iceland. | necropsies of 1010 rock ptarmigans (lagopus muta) sampled in autumn 2006-2015 in northeast iceland revealed mesocestoides canislagopodis tetrathyridia infections in six birds (0.6 %), two juvenile birds (3 month old), and four adult birds (15 months or older). four birds had tetrathyridia in the body cavity, one bird in the liver, and one bird both in the body cavity and the liver. there were more tetrathyridia in the body cavity of the two juveniles (c. 50 in each) than in three adults (10-40), ... | 2016 | 27117162 |