| identification of species-specific dna sequences in north american blackflies. | blackflies are vectors for onchocerca volvulus, a filarial parasite that infects tens of millions of people in africa and latin america. different species of the insect vectors, varying greatly in their ability to transmit the infection, may populate overlapping geographical regions and be morphologically similar. a rapid and reliable method for distinguishing among blackfly species is presently not available. we have isolated cloned dnas coding for repetitive sequences that can distinguish betw ... | 1988 | 3387825 |
| 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 |
| multiple symbiotes in larval black flies (diptera: simuliidae): associations of trichomycete fungi with ichthyosporeans, mermithid nematodes, and microsporidia. | studies of the interactions between two or more species of symbiotic microorganisms in a single host animal have lagged behind those involving interactions between hymenopteran or dipteran parasitoids. we screened the larvae of four species of black flies (cnephia ornithophilia, simulium furculatum, simulium innoxium, and simulium vandalicum) to determine if the colonization and prevalence of trichomycete fungi were influenced by ichthyosporeans, mermithid nematodes, microsporidia, or other spec ... | 2005 | 15955344 |
| rearing black flies (diptera: simuliidae) in the laboratory: bionomics and life table statistics for simulium pictipes. | | 2013 | 3795237 |
| rearing black flies (diptera: simuliidae) in a closed system of water circulation. | a method of rearing large numbers of black flies has been devised using a closed system of water circulation. the subsystems used for hatching, feeding, filtration, and adult trapping are labor-efficient and sufficiently flexible to be useful for rearing most species of temperate and tropical black flies. the filtration subsystem permits a daily assessment of such parameters as larval growth rate, drift, and mortality so that life table statistics can be derived for populations of immatures. fou ... | 1980 | 7414681 |
| polytene chromosomes of three species of blackflies in the simulium pictipes group (diptera:simuliidae). | | 1975 | 1156954 |
| overwintering of simulium pictipes hagen (diptera: simuliidae) as eggs. | | 1974 | 4859435 |