Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| multiplication of coxiella burnetii in aedes aegypti. | 1982 | 7174009 | |
| distribution and density of aedes aegypti (l) and aedes albopictus (skuse) in sarawak. | 1982 | 7176997 | |
| [distribution of aedes aegypti in china and its comprehensive control]. | 1982 | 7185486 | |
| [dipetalonema dessetae in proechimys oris. ii. evaluation of the model for pharmacologic investigations of antifilarial chemotherapy (author's transl)]. | dipetalonema dessetae in proechimys oris is a new model of rodent feafilariasis with several interesting features with respect to its utilisation in antifilarial pharmacology. 1. in the first part of these studies, it has been shown that the final host of the filaria, a rodent, was easy to breed. a prolific mosquito aedes aegypti was an effective vector, and with the selected mode of infection i.e. 200 infesting larvae subcutaneously injected, 80% of the rodents were infected. 2. from 90 to 150 ... | 1982 | 7200173 |
| [intake of microfilariae by the vector in the case of a low microfilareamia (author's transl)]. | the study of the intake of microfilariae of dipetalonema dessetae by aedes aegypti leads to two conclusions with respect to the microfilaraemia: --there is no concentration of microfilariae in the uptake of blood by aedes. --the microfilariae are nearly homogeneously distributed in the vertebrate host blood available to the vector for feeding. such a distribution of microfilariae in the cutaneous blood supply of the host gives the maximum chance for a mosquito to become infected when taking a bl ... | 1982 | 7200752 |
| nondevelopment of wuchereria bancrofti in nude (congenitally athymic) mice. | infective larvae of wuchereria bancrofti (nematoda: filarioidea) were harvested from aedes aegypti mosquitoes fed in vitro on microfilaremic blood of haitian volunteers. larvae were inoculated either into the subcutaneous tissue (sc) or peritoneal cavity (ip) of congenitally athymic (nude) mice, c3h/hen (nu/nu). initially 15 male and two female mice received larval doses from 38-180, and necropsy was done between 11 and 75 days post-inoculation. no worms were found at necropsy. four additional m ... | 1982 | 6751107 |
| comparative study of hemocytes and associated cells of some medically important dipterans. | the aim of this work is to study, characterize, and compare different morphological types of hemocytes of glossina austeni, g. morsitans, calliphora erythrocephala, stomoxys calcitrans, lucilia sericata, aedes aegypti, and culex quinquefasciatus. this information is intended to provide a basis for future studies of the cellular defense mechanisms of these dipterans. seven morphological types of hemocytes were identified by phase-contrast optics: prohemocytes, plasmatocytes, thrombocytoids, granu ... | 1982 | 6764649 |
| toxicity of cyclic peptide antibiotics to larvae of aedes aegypti. | 1983 | 6196417 | |
| cultivation of mosquito cell lines in serum-free media and their effects on dengue virus replication. | seven mosquito cell lines from five species (aedes aegypti, ae. albopictus, ae. pseudoscutellaris, culex tarsalis, and toxorhynchites amboinensis) were adapted to three kinds of serum-free media (sem), which were composed of equal volumes of tryptose phosphate broth and of either leibovitz (l15) medium, eagle's minimum essential medium, or medium 199 with hanks' salts. population growth rates of the cells cultivated in the smfs were generally slower than those of original cell cultures maintaine ... | 1983 | 6137452 |
| the biological control of aedes aegypti on sa-med island, rayong province by means of toxorhynchites splendens, a predatory mosquito larva. | 1983 | 6138386 | |
| experimental model of transovarial transmission of tahyna virus in aedes aegypti mosquitoes. | the progeny of 31 viruliferous aedes aegypti females infected with tahyna virus by sucking on viraemic newborn mice was investigated for virus presence. out of 1587 individuals of the f1 generation, 16 suspensions representing the progeny of 7 females were positive in 146 trials. individuals of the f1 generation failed to transfer the virus by sucking. electron microscopy revealed the presence of tahyna virus particles in the cytoplasm of maturing oocytes inevitably confirming the transovarial t ... | 1983 | 6138986 |
| cryopreservation of the microfilariae of brugia malayi, dirofilaria corynodes, and wuchereria bancrofti. | methods are presented for the cryopreservation of a sheathed microfilaria, brugia malayi, and an unsheathed species, dirofilaria corynodes. the former survived best when frozen at the rate of -0.8 degree or -0.5 degree c per minute using 9% dimethyl sulfoxide (dmso) as the cryopreservative. approximately 52-79% of the thawed microfilariae developed to the third stage in aedes aegypti mosquitoes versus 79% of the unfrozen specimens. for d. corynodes the optimum freezing rate was -2 degrees or -5 ... | 1983 | 6824119 |
| epidemiologic investigations of dengue infection in mexico, 1980. | a binational investigation was conducted in two mexican cities in 1980 to study epidemiologic characteristics of dengue. two study areas were selected in each of the cities (merida and tampico); in each area, in february and in september, sanitarians recorded information concerning abundance of aedes aegypti, and public health nurses obtained blood specimens and clinical information from residents. ninety-nine individuals (24% of the study population) showed serologic evidence of recent dengue 1 ... | 1983 | 6829561 |
| plasmodium gallinaceum: avian screen for drugs with radical curative properties. | existing primary screens for radical curative antimalarial drugs fail to adequately detect many compounds which affect the latent, exoerythrocytic hypnozoite, the stage of the parasite responsible for relapse. at the same time, these screens falsely identify a wide range of compounds with no radical curative activity. the avian malaria, plasmodium gallinaceum, and aedes aegypti mosquitos were used in a screen which measures the effects of candidate compounds on gametocytes and their development ... | 1983 | 6832279 |
| larvicidal activity of bacillus thuringiensis subsp. israelensis, serovar h14 in aedes aegypti: histopathological studies. | 1983 | 6841993 | |
| [repellent properties of mannich bases and cresol and phenol derivatives for aedes aegypti l. mosquitoes and the flea xenopsylla cheopis roths]. | 1983 | 6843496 | |
| [effect of the larval density of aedes aegypti mosquitoes on their mortality as affected by bacillus thuringiensis berl. preparations]. | 1983 | 6843501 | |
| transovarial transmission of dengue 2 virus by aedes aegypti in nature. | dengue 2 virus was recovered from three of 123 pools of naturally infected aedes aegypti larvae (6,200 insects) collected from water containers in rangoon. the virus was also isolated from two of 76 pools (7,730 mosquitoes) of male ae. aegypti, collected as larvae and reared in the laboratory to adults. minimum field infection rates among these two groups of mosquitoes were 1:2,067 and 1:3,865, respectively. insect pools were inoculated into toxorhynchites splendens mosquitoes and dengue viral a ... | 1983 | 6859404 |
| [action of crystals of bacillus thuringiensis var. israelensis on the midgut of aedes aegypti l. larvae, studied by electron microscopy]. | ingestion of bacillus thuringiensis var. israelensis crystals by aedes aegypti larvae is followed by midgut epithelium disruption. earliest ultrastructural changes consist of an enlargement of intra- and intercellular spaces in the basal region of the cell. endoplasmic reticula disintegrate by forming spherical structures which increase in size during intoxication. mitochondria are transformed at first into a condensed form, then become swollen with the disappearance of internal cristae. in the ... | 1983 | 6870088 |
| toxicity of bacillus thuringiensis var. israelensis crystals to aedes aegypti larvae: carbonate reversal. | the toxicity of purified bacillus thuringiensis var. israelensis crystals to larvae of aedes aegypti could be reversed 100-fold by levels of k(2)co(3) as low as 0.15%. | 1983 | 6870244 |
| effect of trypsin and neuraminidase on the infectivity of plasmodium gallinaceum sporozoites. | an investigation was carried out to examine the effect of trypsin and neuraminidase on the infectivity of plasmodium gallinaceum sporozoites. the sporozoites were obtained from freshly dissected salivary glands of aedes aegypti: their infectivity was assayed by their ability to produce a patent parasitaemia following their inoculation into day-old chicks. infectivity was abolished by treatment of the sporozoites with trypsin at a concentration of 100 micrograms ml-1 for 30 minutes at 30 degrees ... | 1983 | 6882061 |
| the regulation of preimaginal populations of aedes aegypti l. (diptera: culicidae) on the kenya coast. i. preimaginal population dynamics and the role of human behaviour. | on the kenya coast aedes aegypti breeds in pots maintained indoors for water storage. pupal numbers vary greatly from one pot to another. the rhythm of water replenishment and the accidental introduction of food into the pots regulate pupal numbers. when water replenishment occurs more often than once per week, pupal numbers are small. when replenishment occurs less often, both low and high pupal numbers may be observed. the presence or absence of larval food distinguishes pots of high versus lo ... | 1983 | 6882066 |
| production of bacillus sphaericus strain 1593 primary powder on media made from locally obtainable nigerian agricultural products. | five media, formulated from dried cow blood, mineral salts, and seeds from four species of legumes, were assessed for growth, sporulation, and insecticidal properties of bacillus sphaericus strain 1593. bacterial powders, prepared from broth, were assayed against culex quinquefasciatus, anopheles gambiae, and aedes aegypti. good growth and sporulation were obtained with all the media. the highest number of viable cells and spores per mililitre (8.6 x 10(8) and 8.1 x 10(8] were obtained in media ... | 1983 | 6883226 |
| macrogeographic genetic variation in a human commensal: aedes aegypti, the yellow fever mosquito. | 1983 | 6884770 | |
| development of dirofilaria repens in aedes aegypti reared in contrasting habitat. | the susceptibility of dirofilaria repens infection in aedes aegypti adults reared in hay-infusion and tap-water during their larval stages was tested. ae. aegypti reared in hay-infusion ingested a bigger amount of blood than those reared in tap-water but harboured fewer d. repens larvae (developing and arrested). the difference in the susceptibility of mosquitoes from the two treatments was correlated with the difference in the robustness of the mosquitoes. | 1983 | 6612416 |
| breeding of aedes aegypti in closed septic tanks. | 1983 | 6618537 | |
| transovarial transmission of dengue viruses by mosquitoes: aedes albopictus and aedes aegypti. | transovarial transmission of all four dengue serotypes was demonstrated in aedes albopictus mosquitoes. the rates of such transmission varied with the serotype and strain of virus. in general, the highest rates were observed with strains of dengue type 1 and the lowest with dengue type 3. surprisingly, despite the use of viral strains of the four dengue serotypes which gave the highest rates with ae. albopictus, transovarial transmission was observed in aedes aegypti only with dengue type 1, and ... | 1983 | 6625066 |
| toxicity of bacillus thuringiensis subsp. israelensis to adult aedes aegypti mosquitoes. | adult female aedes aegypti mosquitoes were killed by the parasporal crystals of bacillus thuringiensis subsp. israelensis (onr-60a) when the crystals were introduced into the insect midgut as an enema. the 50% lethal dose for intact parasporal crystals was 0.21 microgram/mg of mosquito (wet weight), and for solubilized crystals the 50% lethal dose was 0.04 microgram/mg. these values were compared with 50% lethal concentrations in a free-feeding larval mosquito bioassay of 0.018 and 1.28 microgra ... | 1983 | 6625566 |
| the problems of aedes aegypti control in the americas. | 1983 | 6626807 | |
| [diseases transmitted by mosquitoes and urbanization. examples of urban vectors of dengue and filariasis]. | once located in time and place the beginning of urbanization process, the mechanisms of adaptation to urban ecosystem and of dissemination by human conveyances are studied for two domestic mosquitoes: aedes aegypti and culex pipiens fatigans (= quinque-fasciatus). then epidemiological consequences are discussed. ae. aegypti pullulation constitutes a potential risk of urban yellow fever outbreak and the main factor of dengue haemorrhagic fever appearance; the increase of c. p. fatigans population ... | 1983 | 6627544 |
| monoclonal antibodies against surface determinants on gametes of plasmodium gallinaceum block transmission of malaria parasites to mosquitoes. | monoclonal antibodies (mab) against gametes of the chicken malaria plasmodium gallinaceum have been derived. all reacted with the surface of extracellular gametes of the parasite in immunofluorescent antibody reactions and all agglutinated both male and female gametes. in the absence of active complement one mu isotype mab, la 1-d5, mediated at least 95% suppression of infectivity of the parasites to aedes aegypti mosquitoes. individually, mab of the gamma 1 or gamma 2a isotypes mediated only sl ... | 1983 | 6631012 |
| [action of the delta-endotoxin of bacillus thuringiensis var. israelensis on cultured cells from aedes aegypti l]. | the effects of bacillus thuringiensis var. israelensis delta-endotoxin were investigated on a cell culture of aedes aegypti with the electron microscope. the ultrastructural changes following intoxication were: disintegration of endoplasmic reticula by the formation of spherical structures; condensation and then swelling of mitochondria with disappearance of internal cristae; frequent dilatation of the perinuclear space; cellular lysis. the action of a metabolic inhibitor, 2,6-dibromophenol (2,6 ... | 1983 | 6638755 |
| vertebrate host specificity and experimental vectors of plasmodium (novyella) kempi sp. n. from the eastern wild turkey in iowa. | vertebrate host specificity, experimental laboratory vectors, and a description of plasmodium (novyella) kempi sp. n. from eastern wild turkeys (meleagris gallopavo silvestris vieillot) in iowa are presented. plasmodium kempi is infective for domestic turkeys, bobwhites (colinus virginianus), chukars (alectoris graeca), guinea fowl (numida meleagris), peacocks (pavo cristatus), and canaries (serinus canaria), produces a transient infection in mallards (anas platyrhynchos) and domestic geese (ans ... | 1983 | 6644918 |
| transmission of dengue virus by orally infected aedes triseriatus. | transmission of dengue type 1 was demonstrated for 3 strains of aedes triseriatus mosquitoes after oral infection. rates of infection were similar to those observed in a control strain of aedes aegypti. three additional species belonging to the subgenus protomacleaya (aedes brelandi, aedes hendersoni, and aedes zoosophus) were also susceptible to oral infection with dengue type 1 virus but transmission could not be demonstrated although virus was detected in the salivary glands of infected mosqu ... | 1983 | 6650743 |
| a case study of aedes aegypti prevalence by settlement types in dehu town group of maharashtra state. | 1983 | 6668009 | |
| linkage relationships of eleven enzyme loci in the aedes scutellaris group. | linkage relationships of 11 enzyme loci were determined in backcrosses between aedes polynesiensis and aedes kesseli. three linkage groups established were aat2-lap2-me-sex, cat-ao-pgm-idh2-est6, and gpi-odh-pgd. lap2 and cat have not been previously mapped in aedes. locus order and linkage groups were the same as those observed for seven loci mapped in aedes aegypti. the significance of the observed similarities in chromosome organization and differences in crossover values among closely relate ... | 1983 | 6670992 |
| susceptibility of aedes aegypti to infections with dirofilaria immitis and dirofilaria repens. | eight stocks of aedes aegypti-4 geographic stocks and 4 selected stocks-were tested for their susceptibility to infection with dirofilaria immitis and d. repens. four of the stocks were found to be susceptible and the other 4 were refractory of infection with d. immitis. all the stocks of ae. aegypti that were susceptible to d. immitis were also susceptible to d. repens but the stocks that were refractory to d. immitis were all partially susceptible to d. repens. | 1983 | 6673132 |
| characterization of antigens on mosquito midgut stages of plasmodium gallinaceum. i. zygote surface antigens. | we have defined the surface protein antigens on plasmodium gallinaceum zygotes using radioiodination methods and rabbit anti-zygote serum which blocks transmission of the parasite to aedes aegypti mosquitoes. fifteen protein bands (1-15) in the molecular weight range of 40 000-240 000 and one band at the bromophenol blue dye marker were labelled by the lactoperoxidase and iodogen (1,3,4,6-tetrachloro-3 alpha,6 alpha-diphenylglycoluril) methods. the localization of these radioiodinated components ... | 1983 | 6683783 |
| relative toxicity of organic solvents to aedes aegypti larvae. | 1983 | 6631047 | |
| evaluation of a controlled-release silicate formulation of temephos against aedes aegypti larvae in the laboratory and psorophora columbiae larvae (diptera: culicidae) in rice field plots. | 1983 | 6192242 | |
| peritrophic membranes and protease activity in the midgut of the malaria mosquito, anopheles stephensi (liston) (insecta: diptera) under normal and experimental conditions. | formation and solubility of the peritrophic membranes (pm) in the midgut (stomach) of female anopheles stephensi depended on salt concentration in the gut lumen. high calcium drastically reduced the solubility of the pm in vitro. thin-layer chromatography revealed the presence of n-acetylgalactosamine and galactose in the pm. in contrast to aedes aegypti no n-acetylglucosamine was present indicating significant differences between anopheles and aedes mosquitoes with respect to pm formation and c ... | 1983 | 6345801 |
| the exchange of calcium in larvae of the mosquito aedes aegypti. | the exchange of labelled calcium between the external medium and the whole body was investigated in the larva of aedes aegypti (l.) using a closed, two-compartmental model. the transport system for the uptake of ca2+ was found to be saturable and obeyed michaelis-menten kinetics. the efficiency of the inward transport of calcium from dilute solutions was markedly reduced by starvation or by ruthenium-red, a selective inhibitor of ca2+ activated atpase, indicating that this transport system is en ... | 1983 | 6192197 |
| insecticidal evaluation of zolone against culex quinque-fasciatus, anopheles culicifacies, a. stephensi and aedes aegypti. | 1983 | 6137454 | |
| inheritance of brown-eye and colourless-eye in the mosquito aedes aegypti. | an autosomal recessive gene bw (probably closely linked to y on chromosome 2) gives a brown eye colour. when this gene and the sex-linked gene re (red-eye) are both homozygous, a colourless-eye results. brown-eye shows good viability and penetrance, and it has been maintained as a pure stock. colourless-eye shows 87% penetrance in both sexes, and the females are low in viability and fertility. a colourless-eye stock has been maintained by crossing colourless-eyed males to their heterozygous red- ... | 1983 | 6882068 |
| diuresis in newly emerged, unfed mosquitoes. ii. the basic pattern in relation to escape from the water, preparation for mature flight, mating and the first blood meal. | a study of 2000 newly emerged adult mosquitoes (aedes aegypti) shows that the rate of excretion is high at the time of eclosion but falls rapidly over the next few minutes. in both sexes, however, the high rate of excretion is regained during a second peak in the middle of day 1. it remains high for about 6 h and then falls in a remarkably steady manner to reach a low level plain, which persists at least till the end of day 3. in females this plain is not reached till some 8 h after the onset in ... | 1983 | 6132392 |
| an osmoregulatory syncytium and associated cells in a freshwater mosquito. | in embryological terms the anal papillae are the product of eversion of the hindgut tissues. the rectum and the anal papillae have the same origin and have a marked structural similarity. the insect hindgut is very labile being able to produce salt transporting or 'chloride cells' from any of the tissues of which it is composed. the hindgut consists of four distinct regions: the ileum and part of the anal canal have a mechanical function, the rectum and the posterior anal canal contain transport ... | 1983 | 6879594 |
| insecticidal effect of aliphatic alcohols against aquatic stages of aedes mosquitoes. | effectiveness of certain long carbon chain aliphatic alcohols as ovicides and larvicides was investigated under laboratory conditions against eggs and larvae of aedes aegypti and aedes scutellaris. out of the eight alcohols tested, three (1-decanol, 1-undecanol and 1-dodecanol) proved to be very effective. the hatching of mosquito eggs was inhibited at a dosage of 5 to 7 litres/hectare. first, third and fourth instar larvae were killed at a dosage of 3 to 7 litres/hectare. first instar larvae we ... | 1983 | 6683011 |
| [new regioselective synthesis of racemic 7,11-dimethyloctadecane--an ovipositon attractant for the yellow fever mosquito (aedes aegypti)]. | 1983 | 6628194 | |
| previtellogenic development and vitellogenin synthesis in the fat body of a mosquito: an ultrastructural and immunocytochemical study. | we describe two phases, previtellogenic and vitellogenic, in the activity of the trophocytes in the fat body of the mosquito aedes aegypti. the previtellogenic phase, leading to trophocyte competence to synthesize vitellogenin (vg), occurred during the first 3 days after eclosion. this phase was characterized by enlargement and activation of the nucleoli, proliferation of ribosomes and rough endoplasmic reticulum (rer), development of golgi complexes, and extensive invaginations of the plasma me ... | 1983 | 6349013 |
| the inactivation of acetylcholinesterase by alpha-terthienyl and ultraviolet light. studies in vitro and in larvae of the mosquito aedes aegypti. | acetylcholinesterase (ec 3.1.1.7) was inactivated photochemically in solution, in the presence of dissolved terthiophene sensitizers. alpha-terthienyl (2,2':5,2"-terthiophene) and its isomers 3,2':5',2"- and 3,2':5',3"-terthiophenes showed very similar sensitizing properties. with all three terthiophenes, the photosensitization was completely suppressed under anaerobic conditions, and therefore the inactivation process required the presence of oxygen. the enzyme was inactivated in vivo when four ... | 1984 | 6509086 |
| genetic variation in an urban population of aedes aegypti (diptera: culicidae). | 1984 | 6502629 | |
| amino acids and peptides. xi. synthesis of attractant and repellent peptides for aedes aegypti and blattella germanica. | 1984 | 6532560 | |
| paradoxical effects of simulated larviciding on production of adult mosquitoes. | we determined whether simulated mortality of larval mosquitoes in food-deprived bodies of water increases emergence of adult females as well as their size by releasing the remaining larvae from competition for food. removal of larval aedes aegypti from rearing containers with suboptimal amounts of food increased the number of adults that emerged. thus, larvicidal measures do not inevitably lead to reduced numbers of mosquito vectors of disease. in food-limiting breeding sites, partially effectiv ... | 1984 | 6507734 |
| quantitative structure-activity relationship of insect juvenile hormone mimetic compounds. | juvenile hormone mimetic activities on aedes aegypti (yellow-fever mosquito) and tenebrio molitor (yellow mealworm) of compounds having (2e,4e)-3,7,11-trimethyl-2,4-dodecadienone structures were comparatively and quantitatively analyzed in terms of their physiochemical structural parameters and by regression analysis. they were structurally composed of three classes, ester and thiol ester derivatives, amides, and ketones, depending on the c1 substituents. the results indicated that the steric di ... | 1984 | 6492079 |
| hormonal regulation of ovarian ecdysteroid production in the autogenous mosquito, aedes atropalpus. | the effects of juvenile hormone (jh) and egg development neurosecretory hormone (ednh) on ovarian ecdysteroid production during vitellogenesis in the autogenous mosquito, aedes atropalpus, were investigated using in vitro techniques coupled with radioimmunoassay (ria) and high-pressure liquid chromatography (hplc). normal females were characterized by quantitative, qualitative, and temporal patterns of in vitro ovarian ecdysteroid production. females decapitated at emergence showed little ovaria ... | 1984 | 6541607 |
| esterase activity in strains of aedes aegypti (diptera: culicidae) tolerant and susceptible to the organophosphate insecticide malathion. | 1984 | 6492084 | |
| lithium attenuates the active transport of calcium in the larva of aëdes aegypti. | 1984 | 6491591 | |
| the toxic effects of triorganotin(iv) compounds on the culicine mosquito, aedes aegypti (l). | the structure-activity relationships of 25 triorganotin(iv) compounds were studied using the 4th instar a. aegypti larvae of the susceptible liverpool red-eye strain. the lc50 values of these compounds were compared with those of malathion, ddt and temephos. maximal activities were obtained with tritolyltin chloride and its complexes with triphenyl-phosphine oxide and pyridine n-oxide, dimethyloctyltin- and diethyloctyltin acetates and tributyltin sucrose phthalate. a limited number of the trior ... | 1984 | 6204424 |
| effects of toxorhynchites amboinensis on laboratory-reared aedes aegypti populations (diptera: culicidae). | 1984 | 6144797 | |
| salivary apyrase of aedes aegypti: characterization and secretory fate. | salivary gland homogenates of female adult aedes aegypti hydrolyzed atp and adp thereby defining an apyrase activity. activity is divalent cation dependent with an optimum ph of 9.0. atpase and adpase activities could not be dissociated thus suggesting the presence of a true apyrase enzyme. apyrase activity is low on the day of emergence but increases to 160 mu per pair of glands on the second day. the site at which mosquitoes probed into warm polyacrylamide gels retains apyrase activity, confir ... | 1984 | 6094095 |
| increased intradermal probing time in sporozoite-infected mosquitoes. | because malaria sporozoites destroy segments of the salivary glands of vector mosquitoes, we determined whether salivary function is impaired. such pathology would result in a prolonged intradermal probing phase of feeding behavior, because the role of saliva is to help locate blood vessels. indeed, non-infected aedes aegypti mosquitoes probed for a shorter period than did either sporozoite-infected or saliva-deprived mosquitoes. salivary apyrase activity is reduced to a third following maturati ... | 1984 | 6696175 |
| dengue fever. reappearance in northern queensland after 26 years. | during march, 1981, a number of cases of dengue fever occurred in cairns and townsville, northern queensland. from october, 1981, an outbreak of the infection was recognized on thursday island and, by may 1982, an estimated 38% of residents had been infected. isolated cases were reported from other towns in northern queensland and from other islands in the torres strait. clinical presentation varied from that of severe incapacitating illness lasting up to seven days to infections which were conf ... | 1984 | 6700459 |
| bioassay of solubilized bacillus thuringiensis var. israelensis crystals by attachment to latex beads. | solubilized crystals of bacillus thuringiensis var. israelensis were 7000 times less toxic to aedes aegypti larvae than intact crystals, presumably because mosquito larvae are filter feeders and selectively concentrate particles while excluding water and soluble molecules. a procedure is described whereby soluble toxins are adsorbed to 0.8-micrometer latex beads, with retention of toxicity. the latex bead assay should make it possible to analyze the structure and mode of action of the mosquito t ... | 1984 | 6701520 |
| a large transmissible plasmid is required for crystal toxin production in bacillus thuringiensis variety israelensis. | bacillus thuringiensis var. israelensis (bti), serotype 14, which produces parasporal crystals toxic to certain dipteran larvae, was analyzed by agarose gel electrophoresis and found to contain a complex plasmid array. eight plasmids were detected, with approximate sizes of 3.3, 4.2, 4.9, 10.6, 68, 75, 105, and 135 mda, as well as a plasmidlike linear dna element of approximately 10 mda. partially cured mutants of bti implicated the 75-mda plasmid in crystal production. fifteen independently iso ... | 1984 | 6709732 |
| the effect of humidity on the transmission of brugia pahangi infective larvae to mammalian hosts by aedes aegypti. | the transmission of brugia pahangi by aedes aegypti to the mammalian host was compared at low and high humidity. there was no statistical difference between the number of infected mosquitoes feeding or the egress of infective larvae from these mosquitoes at high or low humidity. the penetration of the host by the infective larvae was however significantly greater (p less than 0.05) at high than at a low humidity. | 1984 | 6710572 |
| plasmodium gallinaceum: erythrocyte factor essential for zygote infection of aedes aegypti. | zygotes of plasmodium gallinaceum, fertilized in vitro and fed to aedes aegypti mosquitoes through a membrane, formed oocysts only when a substance in the cytoplasm of uninfected erythrocytes was present. the relation between erythrocyte volume and infectivity was linear (1:1.2) up to a 50% hematocrit. the intraerythrocytic substance was both nondialyzable and poorly soluble in plasma. by carboxymethyl cellulose chromatography, cytoplasmic constituents eluted at ph 8.6 supported the same infecti ... | 1984 | 6714357 |
| [comparison of the flight capability of plasmodia-infected and plasmodia-free aedes aegypti]. | 1984 | 6717377 | |
| the use of mosquitoes (aedes aegypti) to detect ciguatoxin in surgeon fishes (ctenochaetus striatus). | a new animal assay to detect ciguatoxin in fishes was developed. mosquitoes were subjected to intrathoracic injection of serial dilutions of ciguatoxin crude extracts. toxicity of the fishes was expressed as the mosquito ld50 (g of flesh per mosquito). a significant correlation between the mosquito bioassay and the mouse bioassay performed on the same extracts was shown (r = 0.72, n = 80). we were able to detect 96% of the toxic fishes, while 91% of the fishes non-toxic in mice were also non-tox ... | 1984 | 6719474 |
| a mosquito-virulent bacillus sphaericus in adult simulium damnosum from northern nigeria. | from newly emerged adult simulium damnosum from kaduna river, northern nigeria, a mosquito-virulent strain of bacillus sphaericus was isolated. in another four cases non-virulent b. sphaericus were present. the isolate exerted a lc50 of 50 spores/ml for culex pipiens l4-larvae and was less virulent for anopheles stephensi (400 sp/ml) and aedes aegypti (800 sp/ml). | 1984 | 6720123 |
| plasmodium gallinaceum: density dependent limits on infectivity to aedes aegypti. | in acute, blood-induced infections of chickens, the malarial parasite plasmodium gallinaceum is most infective to the mosquito aedes aegypti 1 day before gametocyte numbers peak. in an effort to account for this disynchrony , daily changes in parasite infectivity, parasitemia, hematocrit, and hemoglobin were measured during the course of infections. three events were correlated with the loss of infectivity: (1) in the 24 hr between park infectivity and peak gametocytemia , schizont-induced hemol ... | 1984 | 6723894 |
| [ecology of dengue and aedes aegypti. preliminary research. 2]. | 1984 | 6729600 | |
| genetic heterogeneity among caribbean populations of aedes aegypti. | using starch gel electrophoresis, we have analyzed genetic variation at 11 loci in 18 caribbean collections of aedes aegypti. our results show that, while there is some relationship between geographic proximity and genetic distance, the overall picture among islands is one of gene frequency patchiness , with some collections clearly not conforming to any geographic pattern. we attribute this to the combined effects of high rates of gene flow among islands and with the mainland american continent ... | 1984 | 6731681 |
| experimental aerial spraying with ultra-low-volume (ulv) malathion to control aedes aegypti in buga, colombia. | 1984 | 6733345 | |
| blood feeding affects age-related changes in the host-seeking behavior of aedes aegypti (diptera: culicidae) during oocyte maturation. | 1984 | 6748001 | |
| the importance of disease induced changes in mammalian body temperature to mosquito blood feeding. | laboratory mice infected with rodent malaria (plasmodium berghei or p. chabaudi) or st. louis encephalitis virus (sle) were not hyperthermic during the infection period. however, all infected animals displayed pathogen-specific periods of hypothermia. hamsters infected with p. berghei were hyperthermic on day 7 postinfection (pi) but became hypothermic on day 8 pi and remained so until death, approximately 20 days pi. body temperatures of mice infected with p. yoelii were not significantly diffe ... | 1984 | 6142803 |
| the effect of p-aminobenzoic acid and folic acid on the development of infective larvae of brugia malayi in aedes aegypti. | adult aedes aegypti mosquitoes, infected with the subperiodic brugia malayi, were found to enhance the development of the filarial parasites to the infective stage when they were exposed to a cotton pad soaked in 10% sucrose solution containing p-aminobenzoic acid (paba) in 0.001, 0.005, 0.01, 0.05 and 0.1% concentrations. similarly, larval development increased when the mosquitoes were fed with folic acid at 0.001, 0.01 and 0.1% concentrations. this stimulation was more when paba or folic acid ... | 1984 | 6143484 |
| medium for the production of primary powder of bacillus thuringiensis subsp. israelensis. | five media, formulated from the seeds of five legume varieties, dried cow blood, and mineral salts, were assessed for the growth and production of insecticidal properties of bacillus thuringiensis subsp. israelensis. bacterial powders prepared from the broth cultures were assayed against the larvae of aedes aegypti, culex quinquefasciatus, and anopheles gambiae. a standard primary powder of b. thuringiensis subsp. israelensis (ips78) was included in the assay for comparison. good growth was obta ... | 1984 | 6144290 |
| [preliminary report on the susceptibility of mosquitoes to brugia pahangi]. | a comparative study on the susceptibility of eight species of four genera of mosquitoes to brugia pahangi was carried out. aedes aegypti (liverpool strain), aedes togoi, armigeres subalbatus and mansonia uniformis (taiwan strains) were found with the third-stage larvae 14 days after feeding on infected rats (sprague-dawley). the remaining of aedes aegypti, aedes albopictus, aedes pseudoalbopictus, culex p. fatigans and culex annutus (taiwan strains) were found refractory to infection. to determi ... | 1984 | 6150813 |
| comparative bioassays of tolypocladium cylindrosporum gams (californian strain) against four species of mosquitoes in malaysia. | comparative laboratory bioassays of tolypocladium cylindrosporum, california strain (kal) was conducted against third instar larvae of four species of mosquito, viz. aedes aegypti, anopheles balabacensis, culex quinquefasciatus and mansonia uniformis in malaysia. of the four mosquito species tested, ma. uniformis was found to be the most susceptible, followed by cx. quinquefasciatus, an. balabacensis and ae. aegypti, in a decreasing order. the lc50 values for ma. uniformis, cx. quinquefasciatus, ... | 1984 | 6151744 |
| laboratory observations on toxorhynchites splendens wiedemann in thailand. | the biology of toxorhynchites splendens predaceous larvae which breed in domestic containers like aedes aegypti was studied. egg stage lasts 52.64 +/- 0.13 hours. there are four larval instars lasting 2.38 +/- 0.04, 1.24 +/- 0.26, 8.09 +/- 1.6 and 28.78 +/- 5.39 days respectively. pupal development lasts 5.18 +/- 1.06 days. the adult life span is 29.55 +/- 8.06 days. growth increment was by measuring the size of head capsule. number of second instar prey larvae consumed by 1 to 4 instars predace ... | 1984 | 6151745 |
| [research on viral infections in south pacific mosquitoes under natural conditions]. | from 1975, epidemiological studies on arboviral diseases, conducted in new caledonia, vanuatu, wallis and horne islands, have shown that 11 species of mosquitoes may harbour viruses in natural conditions. virus isolations were attempted from 1,025 pools of culicidae totalizing 32,182 individuals belonging to 5 genera and 21 species. viral infections have been demonstrated in 76 pools (7.4%). the species harbouring viruses were: aedes aegypti, ae. alternans, ae. notoscriptus, ae. vexans, ae. vigi ... | 1984 | 6151879 |
| [the initial activity and persistance of an experimental larvicide with a base of bacillus thuringiensis var. israelensis and a commercial preparation containing the organophosphorus insecticide temephos]. | the larvicide activity of the experimental preparation san 402 i wdc containing b. thuringiensis var. israelensis and that of abate 500 e (44 % temephos) were tested on the larvae of aedes aegypti. the studies were performed on the following media: distilled water, pure and buffered at ph 9, 7 and 4 and pond water whether or not free from materials in suspension. the activity of both preparations is not influenced by the composition of the media, exception made for the presence of materials in s ... | 1984 | 6208235 |
| specificity of cultured insect tissue cells for bioassay of entomocidal protein from bacillus thuringiensis. | cultured tissue cells from lepidopteran and dipteran sources displayed an order-specific response to entomocidal protein from crystals of bacillus thuringiensis. protein isolated from crystals of b. thuringiensis subsp. kurstaki was effective against cells of the spruce budworm (choristoneura fumiferana) and the tobacco hornworm (manduca sexta), but was inactive against both mosquito cell lines tested (aedes aegypti and anopheles gambiae). conversely, protein from inclusion bodies of b. thuringi ... | 1984 | 6321329 |
| a survey of filariasis among refugees in south florida. | between january 1981 and march 1982, a filariasis survey was conducted among 668 haitian immigrants and 155 southeast asian refugees residing in florida, u.s.a. microfilariae were detected only in haitians, with 6.7% positive for wuchereria bancrofti and 1.3% positive for mansonella ozzardi. the majority of individuals with bancroftian filariasis came from five coastal urban areas including port-au-prince, duvalierville, gonaïves, leógane and cap-haitien. no unequivocal signs of bancroftian fila ... | 1984 | 6370004 |
| [ecology of dengue and aedes aegypti. preliminary study]. | 1984 | 6372125 | |
| selective primary health care: strategies for control of disease in the developing world. xi. dengue. | since world war ii, dengue viruses have progressively extended their geographic domain and have increased as causes of human morbidity and mortality. this complex of four flaviviruses is principally transmitted to humans by the bite of aedes aegypti, the yellow fever vector. factors that promote the indoor storage of water are congenial to the breeding of a. aegypti. these include the dislocations of wars, overpopulation , and urbanization. by the mid-20th century, a. aegypti eradication campaig ... | 1984 | 6374837 |
| arthropod studies with rabies-related mokola virus. | a cell culture-adapted variant of the rabies-related mokola virus was demonstrated to replicate in inoculated aedes aegypti mosquitoes. replication was slow compared to many arboviruses in their vectors. maximum titers were not obtained until after approximately 6 weeks of extrinsic incubation. mokola virus underwent nine mosquito-mosquito passages at approximately monthly intervals and was thus maintained in insects for 340 days before terminating the study. virus antigen was detected by immuno ... | 1984 | 6385743 |
| [comparative action of solubilized crystals of h-14 and h-1 serotypes of bacillus thuringiensis on cultures of aedes aegypti cells]. | crystals isolated from bacillus thuringiensis serovar thuringiensis (h-1) and from serovar israelensis (h-14) were dissolved in sodium hydroxide, then tested in vitro on aedes aegypti cell cultures. toxic action was followed after morphological and metabolic alterations of the treated cells. only the israelensis sodium extract was toxic and gave cellular swelling, inhibition of cell growth and inhibition of labelled precursor incorporation, i. e. of 3h-thymidine, 3h-uridine and 3h-leucine. | 1984 | 6465742 |
| [the ecology of dengue and aedes aegypti. preliminary report. 3]. | 1984 | 6474264 | |
| the effect of colonization upon aedes aegypti susceptibility to oral infection with yellow fever virus. | two colonies of aedes aegypti were established from two independent collections from vero beach, florida. eleven sequential generations of the first colony were tested for variation in oral susceptibility to infection with yellow fever virus (yfv). each generation was also assayed for genetic variability at seven enzyme loci using electrophoretic techniques. significant differences in infection rates were detected between some generations. these differences were significantly correlated with gen ... | 1984 | 6476217 |
| the verification of a mammalian toxicant classification using a mosquito screening method. | routine toxicity screening of substances using rodents can be time consuming and expensive. for these reasons various alternative methods have been developed, but many lack standardization and acceptance. it was hypothesized that a satisfactory classification of mammalian toxicants could be obtained using a simple mosquito (aedes aegypti) screening method. to this end, median lethal concentration (lc50) values were determined for a wide variety of mammalian toxicants representing a range of toxi ... | 1984 | 6519371 |
| [fecundity of aedes aegypti mosquitoes in relation to their infection with the malaria agent plasmodium gallinaceum]. | studies of the effect of p. gallinaceum on ae. aegypti in different periods of the agent's sporogony and during different gonotrophic cycles of the vector have shown the absence of strong inhibition of mosquitoes' fecundity. | 1984 | 6522100 |
| comparative development of brugia malayi in susceptible and refractory genotypes of aedes aegypti. | 1984 | 6527177 | |
| infectivity of a venezuelan strain of metarhizium anisopliae to aedes aegypti larvae. | 1984 | 6539354 | |
| natural transovarial transmission of dengue 4 virus in aedes aegypti in trinidad. | the isolation of dengue 4 virus from adult aedes aegypti, reared from eggs collected in nature, is reported for the first time. from the locality where the isolate was made, 25 pools consisting of 1,848 ae. aegypti reared from eggs were processed. in this study, 10 different localities were sampled and a total of 10,957 ae. aegypti adults, collected as eggs or larvae in nature, were processed for virus isolation. from a total of 158 mosquito pools tested, one recovery of dengue 4 virus was made. ... | 1984 | 6542323 |
| [laboratory study of the transmission of dengue virus by aedes aegypti and aedes albopictus]. | 1984 | 6543740 | |
| the regulation of preimaginal populations of aedes aegypti (l.) (diptera: culicidae) on the kenya coast. ii. food as a main regulatory factor. | experiments were carried out in a village on the kenya coast to investigate observed differences in pupal productivity of aedes aegypti breeding in indoor pots. daily addition of maize gruel, the staple food of villagers, to pots of high and low mosquito production promoted an increase of pupal numbers, although daily introduction of first-instar larvae did not significantly affect pupal production. differences in pupal productivity were not related to differences in the numbers of eggs laid in ... | 1984 | 6547039 |
| [the ecology of dengue and aedes aegypti. preliminary investigation 4]. | 1984 | 6084309 | |
| in vitro cultivation of infective larvae of dirofilaria immitis. | infective larvae (l3) of dirofilaria immitis were cultivated in various synthetic media. l3 obtained from aedes aegypti mosquitoes by mass dissection were inoculated into the media, viz: rpmi 1640 medium with 10 per cent human ab serum (medium-a); tc-199 medium with organic acids, sugars of grace's insect medium and 10 per cent foetal calf serum (fcs) (medium-b); and grace's insect medium with 10 per cent fcs (medium-c). maximum survival of 26 days was found in medium 'a'. approximately 80 per c ... | 1984 | 12055792 |
| avermectins, mk-933 and mk-936, for mosquito control. | two avermectins were shown to be effective as mosquito larvicides or when fed to adult female mosquitoes in sucrose solution or in blood. larval lc50 values of compounds mk-933 and mk-936, expressed as parts per billion, were found to be 3.94 and 2.42 for culex pipiens, 5.85 and 2.90 for anopheles stephensi and 23.4 and 10.4 for aedes aegypti. when fed to adult females of an. stephensi, ae. aegypti or cx quinquefasciatus, mk-933 at 2.8mg active ingredient per litre in sucrose solution caused com ... | 1985 | 3832491 |