| standard sampling techniques underestimate prevalence of avian hematozoa in willow ptarmigan (lagopus lagopus). | a total of 68 willow ptarmigan (lagopus lagopus l.) was collected during september 1995 from two localities in troms county, northern norway. thin blood smears were prepared and examined for blood parasites. of the 68 willow ptarmigan examined, 94% harbored one or more species of hematozoa. there were four (6%), 44 (65%), 16 (24%), and four (6%) birds infected by zero, one, two, and three species of parasites, respectively. prevalences at the coastal locality, kattfjord (n = 43), were leucocytoz ... | 2003 | 12910763 |
| vector-borne parasites decrease host mobility: a field test of freeze or flee behaviour of willow ptarmigan. | transmission mode has been suggested to be a strong predictor of virulence. according to theory, the transmission of vector-borne parasites should be less dependent on host mobility than directly transmitted parasites. this could select for increased exploitation of host resources in parasites transmitted by vectors, which may be manifested as higher virulence. here, we test the prediction that there is an association between transmission mode and the effect on host mobility by comparing parasit ... | 2006 | 16696980 |