| the vectors of brugia malayi in southern thailand. | mansonia uniformis, with an infective rate of 0.02, was incriminated as the vector of periodic brugia malayi in pattani province. mansonia bonneae and ma. dives, with infective rates of 0.18 and 0.20 respectively, were the vectors of b. malayi in narathiwat, where the microfilarial periodicity was the subperiodic form. | 1978 | 35838 |
| scanning electron microscopy of eggs of mansonia bonneae (diptera: culicidae). | the egg of mansonia bonneae (edwards) is described by means of scanning electron microscopy (sem) and compared with other sympatric species reported recently in previous studies. ma. bonneae differed from ma. uniformis (theobald), ma. indiana (edwards), ma. annulifera (theobald), and ma. annulata (leicester) in that it has six variably sized dog-tooth spines surrounding the raised central micropyle, and only a single nipplelike stud at the anterior one-third of the egg. a key for identification ... | 1992 | 1361006 |
| factors affecting transmission of wuchereria bancrofti by anopheline mosquitoes. 4. facilitation, limitation, proportionality and their epidemiological significance. | quantitative understanding of the transmission dynamics of lymphatic filarial parasites is essential for the rational planning of control strategies. one of the most important determinants of transmission dynamics is the relationship between parasite yield, the success rate of ingested microfilariae (mf) becoming infective larvae in a mosquito vector, and mf density in the source of the human blood meal. three types of relationship have been recognized in human filaria/mosquito couples--limitati ... | 1992 | 1475823 |
| the effect of bacillus thuringiensis israelensis [h-14] on emergence of mansonia mosquitos from natural breeding habitat. | the measurement of the ultimate effects of the microbial insecticides on mosquito density is best obtained by assessment of adult populations. the main aims of this study are: (1) to assess the effect of bacillus thuringiensis israelensis (bti) fc skeetal and bactimos briquettes on the emergence rate of mansonia bonneae developed from the introduced first-instar stage larvae and (2) to measure the effect of these two formulations of insecticides on mansonia adult populations emerging from the na ... | 1990 | 1981631 |
| field and laboratory observations on coquillettidia crassipes in relation to transmission of brugia malayi in peninsular malaysia. | field observations were made on coquillettidia crassipes during a study of mansonia in a swamp forest ecotype in tanjong karang. there was an increase in abundance in july consistent with the increase in abundance of mansonia and an increase in rainfall. the biting cycle showed a dramatic early peak during the period 1900-2000 hours. the probability of daily survival through one day for the first three gonotrophic cycles was 0.770, 0.722 and 0.759. two of the 54 cq. crassipes dissected were infe ... | 1986 | 2873797 |
| update on the bionomics of mansonia vectors of brugian filariasis. | the genus mansonia is divided into two subgenera, mansonia and mansonioides. the subgenus mansonioides includes the important vectors of lymphatic filariasis caused by brugia malayi in south and southeast asia. six species of this subgenus are vectors of two types of brugian filariasis, periodic and subperiodic. all six species, viz mansonia bonneae, ma. dives, ma. uniformis, ma. annulifera, ma. annulata and ma. indiana are present in this country. the ecological factors governing the larval and ... | 1993 | 7973951 |
| germination, growth, and sporulation of bacillus thuringiensis subsp. israelensis in excreted food vacuoles of the protozoan tetrahymena pyriformis. | spores of bacillus thuringiensis subsp. israelensis and their toxic crystals are bioencapsulated in the protozoan tetrahymena pyriformis, in which the toxin remains stable. each t. pyriformis cell concentrates the spores and crystals in its food vacuoles, thus delivering them to mosquito larvae, which rapidly die. vacuoles containing undigested material are later excreted from the cells. the fate of spores and toxin inside the food vacuoles was determined at various times after excretion by phas ... | 1998 | 9572947 |
| bothaella manhi, a new species of tribe aedini (diptera: culicidae) from the cuc phuong national park of vietnam based on morphology and dna sequence. | a new species of genus bothaella (diptera: culicidae) collected along with two other species of the genus during surveys for flavivirus isolations in the cuc phuong national park in northern vietnam is formally described and named as bothaella manhi, sp. n. the adults, pupa and fourth-instar larva are characterized, the male genitalia and the two immature stages are illustrated and dna sequence data are included for regions coding for sections of the coi and coii genes (mtdna). the species is co ... | 0 | 23155353 |
| dna barcoding and wing morphometrics to distinguish three aedes vectors in thailand. | aedes aegypti (diptera: culicidae) (l.), ae. albopictus (skuse), and ae. scutellaris (walker) are important mosquito vectors of dengue and chikungunya viruses. they are morphologically similar and sympatric in some parts of their distribution; therefore, there is a risk of incorrect morphological identification. any confusion could have a negative impact on epidemiological studies or control strategies. therefore, we explored two modern tools to supplement current morphological identification: d ... | 2016 | 26987285 |
| the relationship between the abundance of mansonia mosquitoes inhabiting a peat swamp forest and remotely sensed data. | the present study aimed to demonstrate the relationship of some environmental factors, vegetation greenness index (ndvi) and land surface temperature (lst), with the seasonal variations of mansonia bonneae and ma. uniformis in khosit subdistrict, narathiwat province. it was found that the mansonia population lagged one month behind but correlated positively to ndvi, lst and rainfall. a rise in the number of mosquitoes was directly related to a rise in vegetation, temperature and rainfall. | 2006 | 17120965 |
| control of mansonia mosquitos, vectors of brugian filariasis in sarawak, malaysia. | two field trials in the control of subperiodic brugian filariasis vectors, mainly mansonia bonneae and mansonia dives were carried out in sarawak, east malaysia. in the first trial, malathion ultra-low volume (ulv) spray was used to control the mansonia mosquitos in two filariasis endemic villages. six spray rounds were applied at biweekly intervals at kampung rasau and two spray rounds were applied at monthly intervals in kampung triboh. ulv malathion spray reduced biting ma. bonneae population ... | 1993 | 7973956 |
| efficacy of diethylcarbamazine and pirimiphos-methyl residual spraying in controlling brugian filariasis. | a control programme against subperiodic brugian filariasis was implemented in three villages, (kg. ampungan, kg. sebangkoi and kg. sebamban) in sarawak, malaysia. in kampong ampungan, the mass administration of diethylcarbamazine (dec-citrate) combined with residual house spraying of pirimiphos-methyl reduced microfilarial rate to 8% of the pre-treatment level and microfilarial density (mfd50) to 44% of the pre-treatment level over a period of four years. in kampong sebangkoi and kampong sebamba ... | 1991 | 1680246 |
| breeding-site productivity of the swamp forest mosquitoes mansonia bonneae and ma. dives in sarawak, east malaysia. | studies on larval population densities and adult emergence rates of the brugian filariasis vectors mansonia bonneae edwards and ma. dives schiner were conducted in freshwater swamp forest bordering the sadong river, serian district, sarawak, east malaysia, during 1984-85. three species of aquatic host-plants in the family araceae were identified as supporting immature stages of the ma. bonneae/dives complex. proportions of positive plants were 4.7%, 6.5% and 3.4% with 6.4 +/- 2.6, 7.3 +/- 2.8 an ... | 1988 | 2908782 |
| the biting cycles of mansonia bonneae, m. dives, m. indiana and m. uniformis in southern thailand. | | 1973 | 4147911 |