| further studies on the development of onchocerca spp. (nematoda: filarioidea) in nearctic black flies (diptera: simuliidae). | of three species of nearctic black flies tested, simulium pictipes hagen proved the most efficient laboratory vector of the bovine parasite onchocerca lienalis. among flies inoculated intrathoracially with 40 microfilariae, numbers of 3rd-stage larvae per fly were 7.63 for s. pictipes, 7.54 for s. vittatum zetterstedt, and 0.83 for s. decorum walker. s. pictipes survived the longest under laboratory conditions, with 83.3% of the females remaining alive 10 days after inoculation with 40 microfila ... | 1983 | 6650731 |
| the development of onchocerca spp. in simulium decorum walker and simulium pictipes hagen. | two species of nearctic black fly, simulium decorum and s. pictipes, exhibit partial susceptibility to infection with the bovine parasite, onchocerca lienalis, when inoculated intrathoracically with microfilariae. in addition, a proportion of s. decorum females will support the development of the human parasite, o. volvulus, to the third larvae stage. infection rates with second- or third-stage larvae seven or more days after varied among geographic strains of s. decorum, ranging from 6.5% in a ... | 1980 | 7233546 |