Haemaphysalis concinna(Acari: Ixodida): persistent efficacy of selamectin in Angora rabbits under laboratory conditions
Bian Y, Yang G, Wang T, Sun J, Li K, Chen W.
Abstract
In the present study, thepersistentefficacyofselamectin(SEL) inAngorarabbitsinfested withHaemaphysalisconcinnawas observed. SEL (6 mg/kg) was administered torabbitswith a single topical application. EighteenAngorarabbitswere randomly allocated to three groups of sixrabbitseach. At days 1, 8, 15, 22, and 29 following SEL administration,rabbitswere inoculated with larval, nymphal, and adult ticks and were then observed for a period of 7 days. The cumulative reduction rates at days 1, 8, 15, 22, and 29 for dead ticks were 100%, 100%, 100%, 95.0%, and 76.7%, respectively, for larvae; 100%, 100%, 100%, 85.0%, and 65.0%, respectively, for nymphs; and 100%, 95.0%, 85.0%, 60.0%, and 45.0%, respectively, for adults. The cumulative reduction rates for larvae in untreatedAngorarabbits(controls) were 3.3%, 1.7%, 3.3%, 5.0%, and 5.0%, respectively. There was no reduction of nymphs and adults in untreatedAngorarabbits(controls). The reduction rates for larvae, nymphs, and adults were significantly higher forAngorarabbitsinoculated with SEL than the controls (P < 0.001).
Copyright © Springer-Verlag 2011
ParasitolRes.2011 Sep;109(3):879-83. doi: 10.1007/s00436-011-2329-0. Epub 2011 Apr 7.
Read full text: http://link.springer.com/article/10.1007/s00436-011-2329-0
