PMID(sorted ascending)
lipase and unspecific esterase activity in the fat body of aedes aegypti the fat body of aedes aegypti a very high unspecific esterase activity and a low lipolytic activity was found. the electrophoretic isozyme patterns of the unspecific esterases show only few changes in the different physiological stages. the activity of the unspecific esterases as well as of the lipase is especially high in young sugar fed and in blood fed mosquitoes which points to special energy requirements in these stages. the role of the unspecific esterases is discussed.19751988
hepatitis b surface antigen (australia antigen) in mosquitoes collected in senegal, west africa.during july and august of 1973, 9,198 mosquitoes were collected in the republic of senegal. eight species of mosquitoes were found in the collections: culex thalassius, culex pipiens quinquefasciatus, culex trigripes, culex phillipi, aedes irritans, aedes aegypti, anopheles gambiae, and mansonia sp. specimens were sorted by biological condition; those obviously engorged were designated as (e), females with swollen abdomens not conspicuously blooded were considered gravid (g), and those with norm ...19763983
infective larvae of brugia: escape from mosquitoes into water and subsequent oral infectivity in jirds.published work showed that third-stage larvae (l-3s) escape into water from dead or dying, brugia pahangi-infected, aedes aegypti. the present study revealed the same escape phenomenon among b. pahangi-infected armigeres subalbatus, anopheles quadrimaculatus, and aedes togoi, and among brugia malayi-infected ae. aegypti and ae. togoi. l-3s maintained in water or in lum's solution for 3 hours retained infectivity when tested in orally or subcutaneously exposed jirds; furthermore, l-3s recovered f ...19768999
experimental studies on the transmission of hepatitis b by mosquitoes.culex tarsalis and aedes aegypti mosquitoes were fed on chimpanzees carrying hepatitis b surface antigen (hbs ag) of known infectivity and pools were tested by radioimmunoassay daily for the presence of hbs ag. hbs ag continued to be detected at low levels in mosquito tissue after digestion of the blood meal. inoculation of susceptible chimpanzees with macerated pools of a. aegypti mosquitoes at two intervals after digestion of the blood meal did not produce hepatitis or serologic evidence of he ...19769000
flight muscle ultrastructure of susceptible and refractory mosquitoes parasitized by larval brugia pahangi.on parasitization with larval brugia pahangi the infected flight muscle fibres of "resistant" anopheles labranchiae atroparvus undergo the following ultrastructural changes. the fibres become almost totally devoid of glycogen, their sarcoplasmic reticulum becomes elongate and closely associated with muscle fibrils. these fibrils degenerate and vesicles appear both within the degenerate fibril and within elements of the sarcoplasmic reticulum. vesicles accumulate around the worm and degenerate to ...197714324
influences of blood digestion on the development of plasmodium gallinaceum (brumpt) in the midgut of aedes aegypti (l.).blood digestion of aedes aegypti and development of plasmodium gallinaceum were shifted against each other by giving the mosquitoes two consecutive blood meals. in this way the parasites were exposed to an environment where blood digestion was more advanced than in single blood meals. this procedure had an inhibiting effect on oocyst production when the two blood meals overlapped; an enhancing effect when they were well separated. the results are explained by the action of trypsin-like proteases ...197719955
peptides as stimulators of egg development neurosecretory hormone release in the mosquito aedes aegypti. 197720271
tree-hole breeding of aedes aegypti in poona city--a short note. 197721847
experimental brugia timori and wuchereria bancrofti infections in certain species of mosquitoes.laboratory reared aedes aegypti (black eye and jakarta strains), aedes togoi, (taiwan), aedes albopictus, (jakarta), wild caught anopheles barbirostris, (java) and mansonia uniformis, (jakarta) were fed on a carrier with mixed infection of brugia timori and wuchereria bancrofti. b. timori and w. bancrofti were able to develop in a. aegypti (black eye) and a. togoi, with development proceeding more rapidly for of b. timori than w. bancrofti. both species of parasites were readily distinguishable ...197724275
[study of the aedes aegypti l. densonucleosis virus effect on preimaginal stages of different species of blood-sucking mosquitoes]. 200628461
the influence of the brain hormone on retention of blood in the mid-gut of the mosquito aedes aegypti (l). ii. early elimination following removal of the medial neurosecretory cells of the brain. 197828529
proteinases of female aedes aegypti (l.). preliminary note. 199828658
rates of infection in, and transmission of, african horse-sickness virus by aedes aegypti mosquitoes.very low infection rates (less than 3%) were obtained when aedes aegypti mosquitoes ingested blood contained 5.8--6.5 log10 mld50/0.02 ml african horse sickness virus (ahsv). when a. aegypti mosquitoes were inoculated intrathoracically with virus, however, high infection rates were achieved. mosquitoes infected by inoculum failed to transmit virus to embryonated hens eggs by bite, and virus could not be detected in membrane or blood when inoculated mosquitoes were allowed to engorge on uninfecte ...197829475
the lethal effects of the cibarial and pharyngeal armatures of mosquitoes on microfilariae.microfilariae of wuchereria bancrofti and brugia pahangi were killed by the chewing action of the cibarial and pharyngeal armatures and other papillae and spines in the fore-gut of mosquitoes. the proportion of ingested microfilariae that were killed was largely dependent on the presence and shape of the cibarial armature. anopheles farauti no. 1 and anopheles gambiae species a and b have well developed cibarial armatures and killed 36 to 96% of the ingested microfilariae. culex pipiens fatigans ...197830190
failure to propagate equine infectious anemia virus in mosquitoes and culicoides variipennis.laboratory-colonized mosquitoes, culex tarsalis, aedes aegypti, culiseta inornata, and anopheles free-borni, and the biting gnat, culicoides variipennis, were exposed to equine infectious anemia virus. exposure to the virus was by intrathoracic inoculation for mosquitoes and by oral ingestion of an infective blood meal through a membrane for c variipennis. after various intervals, groups of 15 to 20 insects were homogenized and inoculated into susceptible ponies. positive immunodiffusion test r ...197831831
topical mosquito repellents xi: carbamates derived from n,n'-disubstituted diamines.carbamates derived from various n,n'-disubstituted diamines were synthesized and evaluated as repellents for aedes aegypti mosquitoes with an in vitro blood-feeding test system. several compounds were more effective than diethyltoluamide.200034026
topical mosquito repellents xii: n-substituted ureas and cyclic ureas.various n-substituted urea and cyclic urea derivatives were synthesized and evaluated as repellents for aedes aegypti mosquitoes with an in vitro blood-feeding test system. several compounds were superior to diethyltoluamide.197934027
distribution and density of mosquitoes in two endemic areas for bancroftian filariasis in sorsogon, philippines.mosquito density in rangas where abaca is in abundance is much higher, almost twice, than that of putiao where abaca is absent. the adult density of aedes poecilus over aedes ananae in the two areas combined is 3 to 4 times whereas the larval density of the former is much lower than aedes ananae. the banana axils is a favorite breeding place for aedes poecilus but may also utilize the abaca axils. this finding is very favorable in the transmission of bancroftian filariasis because this species o ...197834889
electron microscope study of mosquito densonucleosis virus maturation.maturation of mosquito densonucleosis virus (mdv) was studied in its natural host, aedes aegypti l. larvae. first ultrastructural changes were observed in the cytoplasm of virus-infected cells. they consisted in the formation of paracrystalline structures containing particles 18--20 nm in diameter as well as microtubules 20 nm in diameter. virogenic stromas and paracrystalline virion arrays were found in the nuclei of virus-infected cells.197939443
eastern equine encephalomyelitis virus in experimentally infected bats.colonial bats (myotis supp. and eptesicus sp.) were infected with eastern equine encephalomyelitis virus by subcutaneous inoculation or by the bite of infected mosquitoes. bats were maintained in an environment simulating conditions encountered in hibernacula or in summer maternal colonies. virus was detected in the blood of hibernating bats at irregular intervals over a 42-day observation period; viremia perhaps was influenced by the amount of disturbance (arousal) involved in the blood samplin ...197941109
the influence of the brain hormone on retention of blood in the mid-gut of the mosquito aedes aegypti (l.). iii. the involvement of the ovaries and ecdysone.most female mosquitoes require a blood-meal in order to produce mature oöcytes. an egg development neurosecretory hormone (ednh), which is produced in the medial neurosecretory cells (m.n.c.) of the brain and stored in the corpus cardiacum, is released into the haemolymph following the ingestion of blood and is essential for the promotion of ovarian development to maturity. it has been shown that a factor from the m.n.c., presumably ednh, is necessary if the blood-meal is to be retained in the m ...197941256
quantitative studies of the vector competence of aedes aegypti, culex annulirostris and other mosquitoes (diptera: culicidae) with murray valley encephalitis and other queensland arboviruses. 197942801
in vitro damage of cultured ookinetes of plasmodium gallinaceum by digestive proteinases from susceptible aedes aegypti.after exposure to extracts from blood fed a. aegupti cultured ookinetes of p. gallinaceum were damaged to various, defined extents. immature ookinetes were found to be more sensitive to damage than mature ones. the damage was dependent on the digestion time after which the aedes extracts had been prepared and could be correlated with the proteolytic activity in the extracts. control experiments demonstrated that the factors responsible for damage were neither present in unfed mosquitoes nor in b ...197943087
[scanning microscopical observations on the foregut structures o mosquitoes and their role for the ingestion of microfilariae (author's transl)].experiments on the transmission of brugia malayi by various mosquitoes had shown that microfilariae ingested by some species were badly damaged when they reached the stomach, but were much less hurt in others. the structures of the foregut likely to cause these injuries, were investigated and documented by scanning microscope techniques. in anopheles albimanus, a. arabiensis, a. stephensi and a. pharoensis which have well developed armatures the microfilariae showed a high rate of destruction. i ...197944040
the ultrastructure of cultured plasmodium gallinaceum ookinetes: a comparison of intact stages with forms damaged by extracts from blood fed, susceptible aedes aegypti.the ultrastructure of intact, mature and immature ookinetes of plasmodium gallinaceum is compared with corresponding stages which have been damaged by aedes aegypti extracts prepared during blood digestion. the study reveals some new details of ookinete ultrastructure. in particular the composition, development and mode of formation of the pellicle of plasmodial ookinetes is shown to be similar to that of other sporozoans. the pellicle is composed of three membranes, develops in the growing prot ...197944096
toxicity of parasporal crystals of bacillus thuringiensis subsp. israelensis to mosquitoes.toxicity of bacillus thuringiensis subsp. israelensis (onr-60a/who 1897) parasporal crystals to three medically important mosquito larvae is described. the numbers of larvae killed are in relation to crystal dry weight. the crystals are lethally toxic to aedes aegypti linnaeus (mean 50% lethal concentration [lc50] = 1.9 x 10(-4) micrograms/ml), culex pipiens var. quinquefasciatus say (lc50 = 3.7 x 10(-4) micrograms/ml), and anopheles albimanus wiedemann (lc50 = 8.0 x 10(-3) micrograms/ml). purfi ...197944177
relative abundance of aedes aegypti (linnaeus) and aedes albopictus (skuse) in different habitats. 197944342
bunyavirus development in arctic and aedes aegypti mosquitoes as revealed by glucose oxidase staining and immunofluorescence.northway virus replication has been detected in salivary glands of wild-caught culiseta inornata and aedes communis mosquitoes from the western canadian arctic after incubation at 4 degrees c for 9 to 11 months, and after incubation at 13 degrees c for 3 to 4 months after they received virus by oral ingestion or intrathoracic injection. aedes hexodontus supported northway virus replication after incubation at 13 degrees c for one month after intrathoracic injection. aedes aegypti supported north ...197944464
studies with brugia pahangi 10. an attempt to demonstrate the sharing of antigenic determinants between the worm and its hosts.infective stage brugia pahangi that were reared in aedes aegypti survived equally well in cats that had previously been immunized against mosquito tissue and in a normal cat. the survival of third, fourth, juvenile, adult and microfilarial stages of b. pahangi that were recovered from cats was similar in jirds that had been immunized against cat antigens and in normal jirds. host antigenic determinants were not detected on the surface of larvae in substantial amounts using fluorescent antibody t ...197550339
comparative field cage tests of the population suppressing efficiency of three genetic control systems for aedes aegypti.cycling populations of aedes aegypti were set up in cages and managed in such a way that the populations had a maximum of threefold recovery potential in response to control measures. into three such populations daily releases were made of males which had been chemosterilised, or were double translocation heterozygotes (t1t3) or t1t3 with sex ration distortion (dt1t3). eradication of the populations was achieved with all cases, but the rate of suppression was markedly slower with t1t3 than the o ...197656331
[vital study of the fatty body of larvae of aedes aegypti l. infected with densonucleosis virus]. 201567557
[studies of the time of effectiveness and the characterization of compounds in insecticide tests with aedes aegypti].the contact-toxicity of 5 insecticides (2 chlorinated hydrocarbons, 2 organophosphate compounds 1 p-substance) are tested against aedes aegypti l (adults). because of the relationship between dosage (quantity of application) and time of effectiveness of a compound, we are able to design a specific curve of time-efficacy of each insecticide at graded intervals (= increasing dilutions). this curve may be characteristic of different pure compounds--possibly in connection with other features. the ti ...197767813
field trials for the control of aedes aegypti with abate in poona city and suburbs. 197771265
effect of tepa, shikonin and ecdysone on the alkaline phosphatase in the larvae aedes aegypti (l.).effect of shikonin, tapa and ecdysone was studied on the activity of alkaline phosphatase by biochemical and histochemical methods. tepa and shikonin (sterilants) inhibited the enzyme activity while ecdysone slightly increased the activity. this behaviour has been discussed in the present paper.197876599
susceptibility of larvae of culex fatigans (wiedmann), anopheles stephensi (liston) and aedes aegypti (linn.) to insecticides in pondicherry. 199994038
laboratory studies on the transmission of yellow fever virus by aedes (finlaya) notoscriptus (dipt., culicidae).aedes (finlaya) notoscriptus (skuse), a mosquito which occupies a similar ecological niche to aedes (stegomyia) aegypti (l), the urban vector of yellow fever virus, was screened as a possible vector of this disease. the results indicate that almost certainly ae. notoscriptus is refractory to the virus and could not act as a vector if yellow fever were introduced to australia.197796783
[toxicity of bacillus thuringienses var. israelensis for larvae of aedes aegypti and anopheles stephensi].the comparative study of the larvicidal action of b. thuringiensis var. israelensis on a. aegypti and a. stephensi shows the greater sensitivity of a. aegypti, with 100% of mortality in 30 to 40 min. at high doses. but, for both species of mosquito, the toxicity of these bacteria is very high, as shown by the mortality regression curves and by the lc50. this toxicity is associated with the crystals and can be extracted from them by dilute alkali solution, like the general case of the other serot ...197896979
[cytological study of the action of bacillus thuringiensis var. israelensis on mosquito larvae].a comparison is made between the cytopathological effects of b. thuringiensis var. israelensis on aedes aegypti larvae and the cytopathological effects of the other varieties of b. thuringiensis on lepidoptera larvae. the same primary action is observed, with the loss of integrity of the gut epithelium, the cells of which appear swollen, distorted and finally burst.197897020
inhibition of dirofilaria immitis in gregarine-infected aedes aegypti: preliminary observations. 1979115926
[toxicity of bacillus thuringiensis var. israelensis for simulium larvae, vectors of onchocerciasis].on field trials in infested streams, the primary powder r 153-78 made of b. thuringiensis var. israelensis with a potency of 3,000 i.t.u. aedes aegypti/milligramme is very toxic for blackfly larvae, especially for simulium damnosum s.l. larvae. the lethal concentration 100, in 24 h. is 0.2 x 10(-6) for a 10 min. treatment. this high toxicity, specific for diptera larvae such as mosquitoes and blackflies, is related to the special characteristic of the bacterial crystal protein which has a clear ...1979118818
chemosterilant (apholate)-induced ultrastructural changes during oogenesis in aedes aegypti.the effect of chemosterilant, apholate, on-oogenesis has been studied in aedes aegypti. treatment of larvae to 20 ppm of the chemical induced ultrastural changes in the presumptive and primary follicles of the adult ovary. these changes comprised condensation of chromatin, disruption of nuclear envelope and extensive degeneration as evidenced by numerous myelin figures and residual bodies. in some primary follicles, where cellular degeneration was restricted to epithelial cells, no arrest in dev ...2002126140
epidemiological features of dengue and chikungunya infections in burma.a serological survey for antibody to dengue and chikungunya was carried out in all 14 divisions and states and 2 border towns in burma during 1973-74. dengue hi antibody prevalence rate of less than 10% was observed in arakan and shan states, 10 to 30% in the irrawaddy, pegu, mandalay divisions and kachin, mon and karen states, 31 to 60% in sagaing division, and over 60% in rangoon, magwe and tenasserim divisions. similarly, chikungunya hi antibody prevalence rate of less than 10% was observed i ...1975126493
insecticide susceptibility of some vector fleas and mosquitoes in burma.rat fleas and mosquitoes are insect vectors of public health importance in burma. plague is endemic in central burma and ddt has been the principal insecticide used for its control to date. dengue haemorrhagic fever, recently introduced and transmitted by aedes aegypti, has been spreading to major towns since 1971. the rodents, rattus rattus, r. exulans, bandicota bengalensis, mus musculus, as well as shrews were commonly caught during routine trapping in the country. rattus norvegicus, prevalen ...1975131975
isolation of dengue type 3 from mosquitoes in rangoon.a virus was isolated in suckling mice from aedes aegypti collected from rangoon area, during the month of july 1969. the virus was identified as a member of group b arbovirus dengue type 3, by means of its ability to agglutinate goose erythrocyte at ph 6.6, haemagglutination inhibition and complement fixation tests, and its growth characteristics in aedes albopictus cell cultures. the isolated dengue type 3 virus differs slightly from the indian dengue type 3 virus in its ability to produce haem ...1976140463
[comparison of the effectiveness of different methods of applying insecticides for the control or eradication of aedes aegypti in columbia]. 1978147086
the pathogenesis of vesicular stomatitis virus, serotype indiana, in aedes aegypti mosquitoes. i. intrathoracic injection.analysis of infectious virus particles after intrathoracic injection revealed that aedes aegypti mosquito tissues are capable of supporting the growth of vesicular stomatitis virus (vsv), serotype indiana. although all tissues assayed (salivary gland, midgut, diverticulum, malphigian tubules, and ovary) were capable of supporting vsv growth, the salivary gland was the only organ capable of maintaining an appreciable amount of virus for periods longer than 9 days postinfection. electron microscop ...1976176893
morphometric comparison of the midgut epithelial cells in male and female aedes aegypti l. (insecta, diptera).midgut epithelial cells of male and female aedes aegypti, 3 days after emergence, were compared morphometrically. the results of the present investigation concerning the female, are in good agreement with those of a previous study (hecker et al., 1974), demonstrating that morphometric investigation of midgut epithelia in a. aegypti can successfully be reproduced, and that the mosquito strain used did not show quantitative morphological changes due to laboratory rearing. in males, the cells of th ...1976185746
the pathogenesis of vesicular stomatitis virus, serotype indiana, in aedes aegypti mosquitoes, after imbibition of a viremic blood meal.this study showed that vesicular stomatitis virus (indiana) in most instances was not capable of replicating in aedes aegypti when imbibed by the mosquitoes on a viremic host. rapid inactivation of the virus was observed in some cases within 24 hours after imbibition. attempts to demonstrate virus inactivation by midgut contents in vitro were not successful.1976187155
magnetic resonance studies of eukaryotic cells. iii. spin labeled fatty acids in the plasma membrane.xc sarcoma, vero and aedes aegypti plasma membranes have been studied in viable cells and in purified membrane of xc sarcoma cells by the spin label method. the temperature dependence of the order parameter of fatty acid spin labels is found to be linear in all three cells and membrane and shows no evidence of a lipid phase transition. the order parameter of the fatty acid labels substituted at the 5-position is shown to increase as a function of the cholesterol: phospholipid molar ratio in cell ...1992206284
the susceptibility of cell lines of aedes aegypti (linn.), aedes albopictus (skuse) and aedes pseudoscutellaris (therobald) to infection with blutongue virus.bluetongue virus multiplied in cell lines derived from aedes albopictus and aedes pseudoscutellaris cells. virus reached a maximum titre in the ae. pseudoscutellaris cells three days post inoculation, and in ae. albopictus cells six days p.i. virus growth was demonstrated in both cell lines at 27 degrees c and 37 degrees c. significant titres of virus were still present in the ae. albopictus cells after five subcultures at 27 degrees c over a period of six weeks. no cytopathic effect was observe ...1979218529
california encephalitis virus development in mosquitoes as revealed by transmission studies, immunoperoxidase staining, and electron microscopy.isolates of the snowshoe hare subtype of california encephalitis (ce) virus from yukon mosquitoes during 1972 and 1973 were transmitted by bites of aedes aegypti mosquitoes after 4 to 5 weeks of extrinsic incubation at 55 degrees f after intrathoracic injection, and the 1973 strain was transmitted after mosquitoes were fed virus and held for 3 to 4 weeks at 75 degrees f. antigen of a 1971 isolate of ce virus (marsh lake 23) was detected in salivary glands of infected mosquitoes by the immunopero ...1975235355
a genetical study of ddt resistance in the mosquito aedes aegypti.crosses have been carried out to determine the relationship between adult ddt resistance and the three linkage groups of the mosquito aedes aegypti. two linkage groups were implicated in the control of ddt resistance. in the bangkok-hr strain resistance derived mainly from linkage group iii, probably with the maor effect from the gene r-ddt2. when resistance was transferred into a susceptible background, by outcrossing bangkok-hr to strain 64 and reselecting, resistance in the resulting bangkok- ...1975235502
transmission of hog hog cholera virus by mosquitoes.mosquitoes trapped during an epizootic of hog cholera (hc) in maryland in 1969 were prepared into 40 pools which were inoculated in pigs. hog cholera virus was confirmed in pigs inoculated with 8 of 40 pools of mosquitoes. generally, the pigs contracting hc developed chronic infections with persistent viremia that lasted 30 or more days. two pigs seemed healthy when euthatized 62 and 80 days after inoculation, yet viremia of high titer was detected in each. experimental studies were performed wi ...1975237444
the esterase patterns in the ovaries and the embryonated eggs of aedes aegypti l.the esterases of aedes aegypti were studied in the ovary before and during a gonotrophic cycle and also in fully embryonated eggs by means of disc electrophoresis. during oogenesis no significacant changes can be observed besides a marked increase in the total esterase activity. a different esterase pattern is found in eggs after embryogenesis. the electrophoretic mobility of some esterase bands is highly increased in the ovary compared to other organs. one esterase fraction in the ovary and two ...1975239551
the influence of the brain hormone on retention of blood in the mid-gut of the mosquito aedes aegypti (l.). 1975240165
pathogen transmission in relation to feeding and digestion by haematophagous arthropods.the blood feeding habit, especially among opportunist feeders such as tabanids and stomoxys is known to result in transmission of diseases for which the vectors are not the obligate or alternate hosts. thus, mechanical transmission of trypanosomes such as t. vivax can occur in cattle herds outside tsetse fly areas where tabanids are actively feeding. in the case of yaws, mechanical transmission of the spirochaetes by eye flies (hippelates pallipes) in the west indies is thought to be most likely ...1975240257
haemolytic activity in the blood clot of aedes the present study it was demonstrated that mosquito blood clots contain a haemolytic principle which achieves haemolysis of washed erythrocytes in an isotonic medium. proteinases are thought to play a role in this process. no final proof could be given for the existence of phospholipase activity although some results suggest the presence of this group of enzymes.1975240259
distribution and density of aedes aegypti in the south pacific. 1977271829
an epidemic of dengue fever in wewak.143 clinical cases of dengue fever were reported in wewak between april and august 1976. 15 patients demonstrated a diagnostic rise in antibody titre for group b arbovirus. tests for complement-fixing antibody to dengue viruses did not indicate what type of dengue virus was responsible for the epidemic. vector species aedes aegypti and aedes scutellaris were found before control measures were adopted but were not found four months later. the epidemiology of dengue fever is discussed and measure ...1978279165
the discovery of the mosquito aedes aegypti on tokelau group. 1979292863
infection of female and male aedes aegypti (diptera: culicidae) with the filarial parasite waltonella flexicauda. 1977305482
serological comparison of three strains of aedes aegypti.young adults of three strains of the mosquito, aedes aegypti, were compared serologically by means of the double-immunodiffusion technique. 1. strains and sexes were serologically distinguishable. 2. differences in antigenic composition were evident among the strains and sexes. 3. degree of intraspecific serological relationship varied with sex.1978318341
transfer of leprosy bacilli from patients to mouse footpads by aedes aegypti.aedes aegypti mosquitoes which were first allowed to feed on untreated lepromatous leprosy patients, and then to refeed on mouse footpads were found to transfer mycobacterium leprae to the footpads as seen by the subsequent multiplication of the bacilli in the footpads. results presently available are insufficient to come to any conclusion about the actual role of mosquitoes in the transmission of leprosy in the field.1977333183
persistence and distribution of mycobacterium leprae in aedes aegypti and culex fatigans experimentally fed on leprosy patients.laboratory reared aedes aegypti and culex fatigans were experimentally fed on untreated lepromatous leprosy patients and the proboscides, guts and faeces of the mosquitoes were examiend at 12 hour intervals to determine the persistence and distribution of mycobacterium leprae. in a. aegypti, bacilli persisted in proboscis till 156 hours, in gut 96 hours, and in faeces 72 hours after feeding. in c. fatigans--proboscides 144 hours, gut 96 hours and faeces 72 hours after feeding. in a. aegypti soli ...1978349262
[action of insect development inhibitors on aedes aegypti l. mosquitoes and on rhodnius prolixus stal. but. ii. the juvenile activity of metoprene and structurally close compounds]. 1979353473
[action of insect growth inhibitors on aedes aegypti l. mosquitoes and rhodnius prolixus stal. bugs. iii. the activity of diarylidene cyclonones]. 2009364291
partial suppression of malaria parasites in aedes aegypti and anopheles stephensi doubly infected with nosema algerae and plasmodium. 1979395108
[inbreeding effect of several generations of full-sib mating in aedes aegypti (l.) (author's transl)]. 1979397705
comparative electrophoretic properties of histones from cells of the mosquito aedes aegypti and of the fruitfly drosophila melanogaster. 1977411024
[a new variety of bacillus thuringinesis very toxic to mosquitoes: b. thuringiensis var. israelensis serotype 14].a new strain of b. thuringiensis is described, the flagllar antigen of which is a new one named h14. this strain produces unusual crystals, with all shapes and sizes, and shows a high toxicity for larvae of aedes aegypti.1978417869
[compounds with juvenile activity. xi. the action on aedes aegypti l. mosquito larvae of analogs of sesquiterpene esters that do not contain a methyl group at c-7]. 2009431490
[compounds with juvenile activity. xii. a study of the changes in juvenile activity for aedes aegypti l. mosquito larvae of the epoxides of alkenylphenyl esters under the influence of structural modifications]. 2009431491
transovarial transmission of yellow fever virus by mosquitoes (aedes aegypti).female aedes aegypti mosquitoes infected with yellow fever virus by intrathoracic inoculation transmitted the virus to a small percentage of their f1 progeny. infected offspring were obtained from surface-sterilized as well as from untreated eggs, indicating that the virus was transovarially transmitted. vertical transmission of yellow fever virus in mosquitoes may be an alternative mechanism for biological survival of the virus during adverse periods or in the absence of susceptible vertebrate ...1979434305
the effects of various carbohydrate diets on aedes aegypti infected with dirofilaria immitis. 1979438527
10-formyltetrahydrofolate synthetase activity in normal and brugia pahangi-infected aedes aegypti. 1979448608
morphological effects of insect growth regulating compounds on aedes aegypti (diptera: culicidae) larvae. 1979449622
thymidylate synthetase activity in normal and brugia pahangi-infected aedes aegypti. 1979454454
[age-related changes in the protein quantity in the secretion of the accessory glands of male aedes aegypti (l.)]. 2009460053
epidemic dengue hemorrhagic fever in rural indonesia. iii. entomological studies.entomological studies were carried out during a dengue hemorrhagic fever epidemic in central java in december 1976. both aedes aegypti and aedes albopictus were widely distributed in bantul, but the latter species was more abundant. comparative studies on the vector competence of the two species showed that ae. albopictus had a higher susceptibility than ae. aegypti to oral infection with all four dengue serotypes. the two species were equally compentent in transmitting the bantul strain of deng ...1979464193
characterization of presumptive histone messenger rna from a cell line of aedes aegypti.four presumptive histone messenger rnas were characterized from a cell line of aedes aegypti, and their molecular weights were determined by electrophoresis. they were shown to be associated with polysomes during the peak of dna synthesis, but not when dna synthesis was inhibited by cytosine arabinoside or when dna was not being synthesized. these mrnas are associated with polysomes containing less than 8 ribosomes and having a high ratio of incorporation of lysine to tryptophan into their nasce ...1979466708
normal versus alpha-amanitin induced cellular dynamics of the midgut epithelium in female aedes aegypti l. (insecta, diptera) in response to blood midgut epithelial cells (stomach) of untreated female a. aegypti an increase in the surface area of the rough endoplasmic reticulum (rer) and in the ratio of membrane-bound to free ribosomes is morphometrically measured during digestion of the first blood meal. this can be correlated with the synthesis and release of digestive proteases. the dynamics of the ribosomes in a. aegypti are similar to those in a. stephensi. 3 ng alpha-amanitin per mosquito prevent normal blood digestion, the prolif ...1979467461
a comparison of adult and larval house indices for aedes aegypti in towns in southern india. 1979468352
humoral inhibition of host-seeking in aedes aegypti during oöcyte maturation. 1979469272
the uptake in vitro of dyes, monosaccharides and amino acids by the filarial worm brugia pahangi.the uptake in vitro of various substances by brugia pahangi was investigated using infective larvae obtained from aedes aegypti and worms removed from meriones unguiculatus at 2, 3, 10, 20 and 90 days post-infection. worms incubated in growth medium 199 containing 1% trypan blue possessed demonstrable dye in the oral orifice, the anterior oesophageal lumen and the external openings of the vulva and the cloaca or anus but the dye was not found in the gut lumen even after incubation for 24 h. no u ...1979481911
quantitative aspects of the development of mosquito transmitted brugia malayi and brugia pahangi and their distribution in jirds, meriones unguiculatus.twenty-two jirds, meriones unguiculatus, were exposed to the bites of 2250 females of aedes aegypti carrying an estimated total of 2464 larvae of brugia malayi, and 13 jirds were offered for blood feeding to 1450 mosquitoes infected with about 4460 larvae of brugia pahangi. on necropsy of the jirds, four months after feeding of the mosquitoes, a total of 88 adult filariae of b. malayi and 143 of b. pahangi were recovered in 20 and 13 jirds respectively. the majority of the adult filariae was obt ...1979483379
functional morphology of the midgut of aedes aegypti l. (insecta, diptera) during blood digestion.morphometric analysis of the epithelial lining of the stomach of a. aegypti suggests that digestion of the first blood meal in the stomach of this species can be viewed as a series of phases that can be correlated with physiological data from the literature. in phase ia (0-10 h after blood meal [abm]) the whorls of the rough endoplasmic reticulum unfold, the golgi zones increase, and the basal labyrinth is enlarged. this coincides with processes of synthesis and secretion (e.g., peritrophic memb ...1979487393
toxicity of bacillus thuringiensis toward aedes aegypti larvae. 1979501129
variation in susceptibility to oral infection with dengue viruses among geographic strains of aedes aegypti.the comparative susceptibility of 13 geographic strains of aedes aegypti to oral infection with dengue viruses was studied by feeding the mosquitoes on a virus-erythrocyte-sugar suspension. significant variation in susceptibility to four dengue serotypes was observed among the geographic strains tested. mosquito strains which were more susceptible to one serotype were also more susceptible to the other serotypes, suggesting that the factors controlling susceptibility were the same for all types. ...1979507282
de novo synthesis of methionine in normal and brugia-infected aedes aegypti.crude extracts of normal, adult aedes aegypti were able to form methionine from homocysteine in the presence of 5-methyltetrahydrofolate (mefh4) but not betaine. the requirements for the reaction, including a need for vitamin b12, s-adenosylmethionine (sam), and a reducing system, indicated that it was catalyzed by mefh4:homocysteine transmethylase (methionine synthetase). the general properties of a. aegypti methionine synthetase were found to be similar to those of the analogous enzyme from ba ...1979512751
[modeling of chronic togavirus infection in an aedes aegypti mosquito cell culture at different temperatures]. 1979514216
[classical fowl plague virus reproduction in the body of aedes aegypti mosquitoes].the results of the studies on fowl plague virus (fpv, rostok strain) reproduction in aedes aegypti mosquitoes are presented. the virus-containing allantoic fluid was inoculated intrathoracally in volumes of 0.1 and 0.2 microliter. the virus was isolated in chick embryos and could be detected at 5--14 days after inoculation. after inoculation of 0.1 microliter of virus it could be detected in doses of 0.5, 2.0, 1.75 ig2 id50, after inoculation of 0.2 microliter--in doses of 5, 1.5, and 0.5 ig2 id ...1979524861
[toxic effects of plant extracts on mosquito larvae].vegetable extracts prepared with 530 species belonging to 120 botanical families are biologically screened with fourth stage larvae of aedes aegypti. about twenty species are selected. eight species of convolvulaceae are specially toxic.2004527161
effects of triethylenemelamine (tem) as a pupal dip to sterilize male aedes aegypti (diptera: culicidae). 1979529266
systems analysis of the yellow fever mosquito aedes aegypti. 1979535875
hybridization and mating behavior in aedes aegypti (diptera: culicidae). 1979537005
[breeding places, larval density and niche segregation in three urban culicidae (culex fatigans wied., c. corniger theo., and aedes aegypti l.) at caracas cemetery (author's transl)]. 1979543386
a world-wide survey of genetic variation in the yellow fever mosquito, aedes aegypti. 1979544311
abdominal distention terminates subsequent host-seeking behaviour of aedes aegypti following a blood meal. 1979544697
[intra and interspecific competence in aedes aegypti (l.) and culex fatigans (wiedemann) (diptera: culicidae) under laboratory conditions]. 1978552762
isocitrate dehydrogenase in aedes aegypti: formal genetics, preliminary linkage data and study of natural populations.two loci for isocitrate dehydrogenase (idh-1 ad idh-2) are described in ae. aegypti, both polymorphic with two codominant alleles. crosses made to test linkage relationships of idh-1 indicate that this locus is independent from sex (chromosome 1) and from sod-1 and hk-1 loci (chromosome 3), while it is linked to pgm on the second chromosome. average percent of recombination is 11.37, but significant differences have been found among strains. data on genetic variability of idh-1 and idh-2 in thre ...1978553280
Displaying items 1 - 100 of 13756