| 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 ... | 1976 | 3983 |
| host feeding patterns of connecticut mosquitoes (diptera: culicidae). | blood-engorged coquillettidia perturbans, psorophora ferox, culex, culiseta, and aedes mosquitoes were collected principally by sweep net from salt marsh and woodland habitats in connecticut. of the 570 mosquitoes tested, precipitin tests identified the origins of 517 blood meals and revealed distinct host feeding patterns. aedes mosquitoes fed chiefly on mammals; a. abserratus, a. cantator, and a. vexans showed selectivity for cattle and (or) horses. a. cantator also obtained blood from avian h ... | 1977 | 17310 |
| effect of the landscape and climate on the distribution of blood-sucking mosquitoes in murmansk province. | according to its orographic characteristics and climate the murmansk region represents a special landscape area of the atlantic-arctic zone with its peculiar zoogeographic characters. this specificity is clearly seen in the distribution of 19 species of bloodsucking mosquitoes over the above territory. abundant and widely encountered are only two species, aedes punctor and ae. communis. 9 species, culiseta alaskaensis, c. bergrothi, aedes pullatus, ae. excrucians, ae. pionips, ae. hexodontus, ae ... | 1977 | 19722 |
| transovarial transmission of rickettsia-like microorganisms in mosquitoes. | the wolbachiae found in culex pipiens and the tafahi strain of the a. scutellaris group are small rickettsia-like symbionts of the gonads. they are extrachromosomal self-replicating units that are vertically transmitted through the ovaries. their presence in the only two groups of mosquitoes known to exhibit incompatibility, the fact that they are found in only the tafahi strain, and the loss of incompatibility after removal of wolbachia in c. pipiens are compelling evidence for the role that wo ... | 1975 | 20018 |
| infestation of mosquitoes from the maritime territory by the entomopathogenic fungus, coelomomyces iliensis, under laboratory conditions. | the infection of larvae of culex pipiens molestus, c. vagans and c. tritaeniorhynchus (the vector of the virus of japanese encephalitis) with the entomopathogenic fungus coelomomyces iliensis from kazakhstan was carried out in the primorje territory in 1973--1974. at the infection of larvae of c. tritaeniorhynchus with the suspension of infected larvae the mortality was recorded only from 60% of individuals, while at the infection with a content of sporangia--from 36.6% of larvae. somewhat less ... | 1978 | 27745 |
| 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 ... | 1978 | 30190 |
| the rift valley fever epizootic in egypt 1977-78. 2. ecological and entomological studies. | epidemiological factors related to the introduction, spread and maintenance of rift valley fever (rvf) virus were studied during the 1977-78 epizootic in egypt, culex pipiens is the most ubiquitous and prevalent mosquito species in the nile valley and delta. isolation of rvf virus from unengorged c. pipiens, and demonstration of laboratory transmission of the virus by this species, strongly implicate it as the chief vector in egypt. virus transmission to man also occurs by contamination when han ... | 1979 | 44038 |
| 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 ... | 1979 | 44177 |
| esterase polymorphism and sensitivity to dursban organophosphorus insecticide in culex pipiens pipiens populations. | esterase polymorphism and dursban (o,o-dimethyl-2-pyridylphosphorothioate) sensitivity have been investigated in 12 natural populations and three laboratory strains of culex pipiens pipiens. this mosquito has two esterase loci, est-1 and est-2, which were shown to code esterases of the b group (aliesterases) but not cholinesterases. no correlation between est-1 polymorphism and dursban sensitivity was found, but the increase of the est-2(0.64) allele in the populations less sensitive to dursban ... | 1975 | 54163 |
| autogenesis vs. esterase polymorphism and chlorpyrifos (dursban) resistance in culex pipiens pipiens l. | | 1978 | 84667 |
| [comparative action of 31 insecticides on chlorpyrifos-sensitive and resistant culex pipiens (l.) larvae in the south of france]. | in urban and sub-urban areas larval populations of culex pipiens are now resistant to chlorpyrifos. a replacement compound must be found so 31 pesticides were tested against 3 strains: 2 of them were bred in the laboratory (on sensitive and one resistant) and the third one collected in an area treated with agricultural pesticides and chlorpyrifos. the results show that this last compound induces a cross-resistance only to organophosphorus compounds especially to parathion, chlorpyrifos-methyl, p ... | 1977 | 89655 |
| [progressive acquisition of resistance to chlorpyrifos in culex pipiens (l.) larvae in the south of france]. | a high resistance level has been detected in certain culex pipiens populations after seven years of chlorpyrifos larval treatments in the montpellier area (southern france). the highest rate recorded in 1973 was x 15, in 1974 x 33,3, in 1975 x 47 and in 1976 x 73. the resistance level depends on the application frequency of this larvicide and the various biotope types. "closed populations" are subjected to a higher selection pressure than "open populations". it is now necessary to find a replace ... | 1977 | 89656 |
| laboratory studies with chemosterilized male culex pipiens fatigans for the determination of the optimum quality of release material. | | 1977 | 98438 |
| experimental transmission of wuchereria bancrofti to monkeys. | infective larvae of wuchereria bancrofti from laboratory-raised culex pipiens fatigans and aedes togoi mosquitoes fed on human volunteers in jakarta, indonesia (j strain) and kinmen island, china (k strain) were introduced into taiwan monkeys (macaca cyclopis) by subcutaneous inoculation, by foot puncture, or by permitting infected mosquitoes to feed weekly on the monkeys. some animals were splenectomized and others were treated with varying regimens of immunosuppressants. necropsy was done on m ... | 1979 | 107818 |
| host selection patterns of some pakistan mosquitoes. | the host selection patterns of 18 species of pakistan mosquitoes are described, emphasizing the presumed malaria vectors, anopheles culicifacies, an. fluviatilis, and an. stephensi, and the probable vectors of west nile virus, culex pipiens fatigans and cx. tritaeniorhynchus. all species tested, with the exception of cx, p. fatigans, were considered to be essentially zoophilic. few human feeds were recorded for an. annularis (0.7%), an. culicifacies (0.5%), an. fluviatilis (1.1%), an. nigerrimus ... | 1979 | 110157 |
| laboratory and field evaluation of a growth-regulating compound (th-6040) against culex pipiens fatigans (diptera: culicidae). | | 1979 | 120899 |
| [occurrence of culex pipiens molestus forsk. in populated areas of the leningrad region]. | the mosquitoes of culex pipiens molestus first recorded from leningrad as far as 30 years ago have been reported from the settlements of the leningrad district since 1965. the most northern point of their occurrence is marked at 60 degrees 45' n and is removed from leningrad for over 120 km. such spread of mosquitoes to new settlements is associated with the development of multistory housing construction in the country and delivery of imagos from leningrad to the settlements of the district by m ... | 1975 | 124848 |
| [finding of culex pipiens moletus forskal in murmansk]. | | 1978 | 149896 |
| [change in the autogeny of a leningrad population of culex pipiens molestus (culicidae)]. | eight year observations on the autogeny of c. p. molestus have shown that the per cent of autogenous females decreased from 87% (1968) to 25.6% (1976). the population of c. p. molestus from basement apartments of leningrad can be expected to receive a replenishment from free-living c. pipiens. | 1978 | 149939 |
| [biological characteristics of mosquitoes of the culex pipiens complex (culicidae) in abkhazia]. | a high abundance of c. p. pipiens and c. p. molestus in the town of sukhumi and its vicinity was recorded from june to october. according to siphonal indexes the 4-th-stage larvae of these mosquitoes differ from each other rather insignificantly. the females of c. p. pipiens exhibit a high fecundity within a warm period of the year which sharply falls by the autumn. during a two-year experiment with a basement micropopulation of c. p. molestus from a non-autogenous form of c. pipiens there was e ... | 1978 | 153512 |
| nonelectrophoretic genetic variability in mosquitoes: polymorphism for temperature-resistant and temperature-sensitive phosphoglucomutase alleles in culex pipiens. | homogenates of single individuals of two natural populations and five laboratory populations of culex pipiens were examined by combining electrophoresis and heat denaturation studies on phosphoglucomutase (pgm). all populations showed a high degree of polymorphism for isoelectrophoretic temperature-resistant (tr) and temperature-sensitive (ts) alleles. formal genetic data on the heat stability differences of the pgm are given. if both electrophoretic and isoelectrophoretic alleles are taken into ... | 1979 | 161979 |
| host preference of mosquito vectors of japanese encephalitis. | the host preference of 4 culex mosquito species collected in miaoli and pingtung counties, taiwan was studied by capillary precipitin method. antisera to alum-precipitated sera of man, bovine, swine, rabbit, horse, dog, cat, mouse, chicken, duck, and pigeon were produced in rabbits and reacted with 758 mosquito blood meals among which reactions to one or more antisera. culex annulus and culex tritaeniorhynchus summorosus showed a great avidity for pig, and culex fuscocephala for bovine. culex pi ... | 1975 | 181218 |
| apparent propagation of the equine infectious anemia virus in a mosquito (culex pipiens quinquefasciatus say) ovarian cell line. | a tissue culture of culex pipiens quinquefasciatus say ovarian cells appeared to support the growth of equine infectious anemia (eia) virus. shetland ponies inoculated with 2nd, 7th, 9th, and 11th passages of mediums harvested from infected tissue culture had clinical signs of the disease and became eia positive on 11, 19, 23, and 43 days after inoculation, respectively. | 1976 | 183574 |
| [identification of a group a arbovirus isolated in the far east]. | strains nos. 296 and 260 isolated from aedes vexans and culex pipiens mosquitoes in the ussr far east in 1971 and 1973, respectively, were identified. the size of the viruses was found to be about 50 nm. both strains were pathogenic for 2--3-day-old and 3--4-week-old mice by the intracerebral, subcutaneous and intraperitoneal routes, agglutinated goose red blood cells at the optimal ph 6.0. the strains were identical to each other and by their antigenic structure were classified as semliki fores ... | 1975 | 240231 |
| ionic antagonism in mosquito larvae, culex pipiens. | | 1975 | 240602 |
| on the inheritance of susceptibility for infection with wuchereria bancrofti in culex pipiens fatigans. | from a colony of c.p.fatigans from monrovia showing 21.6% susceptibility of w. bancrofti a refractory strain could be selected but not a highly susceptible one. experiments to select a refractory strain out of the highly susceptible colony from delhi failed. from these results and those of the crossing experiments between the selected refractory strain from monrovia and the delhi colony it appears that in the mosquito population from monrovia susceptibility for w. bancrofti is not dominating ref ... | 1977 | 324054 |
| some aspects of transmission of wuchereria bancrofti and ecology of the vector culex pipiens fatigans in pondicherry. | | 1977 | 336534 |
| comparative susceptibility to wuchereria bancrofti of culex pipiens fatigans delhi strain and of strains cytoplasmically incompatible with it. | | 1977 | 355132 |
| abortive development of wuchereria bancrofti in a west african strain of culex pipiens fatigans. | the detailed morphology of the larvae of wuchereria bancrofti developing in a refractory strain of culex pipiens fatigans from liberia, west africa, has been described. the abortive development of the parasite in the thoracic muscles of the mosquito was characterized mainly by: (i) retardation or complete failure of initial division of the g-cell, (ii) partial or complete encapsulation of developing larvae, especially at the anal and excretory vesicle areas of late first-stage, (iii) breakdown o ... | 1978 | 364800 |
| loss of filarial larvae in a natural mosquito population. | analysis of log normal parasite densities of wuchereria bancrofti in the mosquito culex pipiens fatigans collected in the suburbs of colombo, sri lanka, has shown a decreasing parasite load with age of infection. the median density of microfilarial intake in the natural population was 10.3, but this had decreased to 2.6 by the infective stage. of the total microfilariae ingested, 51.9% were found in the thorax 12--17 hours after infection of the mosquitoes in the laboratory. further decrease in ... | 1978 | 367299 |
| [culex pipiens fatigans wiedemann in tropical africa: its importance and its control (author's transl)]. | improvement in communications, unchecked urbanization and use of inadequate insecticides have promoted widespreading and proliferation of c.p. fatigans in tropical africa. this mosquito is a pest for man but also a main vector of bancroftian filariasis. various sanitation measures and insecticidal control are now available to destroy it; these control methods are indicated. | 1978 | 370500 |
| studies of the susceptibility of culex pipiens fatigans from non-endemic filarial areas to urban wuchereria bancrofti. | | 1979 | 386965 |
| [tests of altocide ps 10, a preparation with juvenile activity, against culex pipiens molestus (forsk; 1775) mosquitoes that breed in basements]. | | 1979 | 431493 |
| [effect of the imaginal feeding of culex pipiens molestus forsk. on female fertility, the development times and progeny survival]. | | 1979 | 431494 |
| ultrastructure of midgut events in the pathogenesis of bacillus sphaericus strain ssii-1 infections of culex pipiens quinquefasciatus larvae. | the fate of bacillus sphaericus strain ssii-1 cells ingested by culex pipiens quinquefasciatus (= c. pipiens fatigans, c. fatigans, c. quinquefasciatus of authors; diptera: culicidae) larvae and the cytological events preceding death of the host were observed using electron microscopy. bacillus sphaericus cells were digested rapidly in the anterior and central midgut. the outer cell wall layer and cytoplasmic ground substance disappeared soon after ingestion. cytolysosomes became prominent in mi ... | 1979 | 436015 |
| investigations on the presence of antibodies to tahyna virus in romania. | serological results are presented of the hai reaction to tahyna virus performed in 1,749 apparently healthy subjects from two countries of romania where culex pipiens mosquitoes occur frequently, in 113 febrile patients (some of which exhibited signs of interstitial pneumonia) and in 675 domestic animals (swine, cattle, sheep and goats). | 1979 | 462795 |
| essential fatty acid for the mosquito culex pipiens: arachidonic acid. | | 1979 | 489998 |
| the genetics of hexokinase in a mosquito, culex pipiens. | the genetics of hexokinase (hk) variants in a mosquito, culex pipiens l., was studied using starch gel electrophoresis. three isozymic forms of hk, all migrating anodally, were present in all three body regions, but in differing proportions. no obvious differences in specificity for three hexose sugars was detected among the three isozymic bands. however, qualitative differences in staining intensity indicate the following order of substrate affinity: glucose greater than fructose greater than m ... | 1979 | 535725 |
| st. louis encephalitis virus transmission following multiple feeding of culex pipiens pipiens (diptera: culicidae) during a single gonotrophic cycle. | | 1979 | 537010 |
| comparative studies of the mosquito-larval toxin of bacillus sphaericus ssii-1 and 1593. | two strains of bacillus sphaericus. ssii-1 and 1593, were bioassayed for toxic activity against second-instar larvae of the mosquito culex pipiens quinquefasciatus. it was found that strain 1593 developed a level of toxicity 3000 times that of strain ssii-1. although the toxic activity of b. sphaericus ssii-1 was relatively unchanged throughout growth, an increase in activity of strain 1593 occurred as the bacteria began to sporulate. strain differences were examined by (i) growth cycle experime ... | 1979 | 540250 |
| experimental hibernation studies in culex pipiens (diptera: culicidae): reactivation of ovarian development and blood-feeding in prehibernating females. | | 1979 | 544816 |
| establishment of a cell line from larvae of culex pipiens fatigans and its susceptibility to infection with some group c arboviruses. | | 1979 | 550225 |
| [comparison of different characters as a function of the degree of inbreeding of culex pipiens (author's transl)]. | | 1978 | 553500 |
| [ability to infect larvae of culex pipiens molestus forsk. (diptera, culicidae) by means of entomophilic nematodes, neoaplectana feltiae carpocapsae stan., 1974 (dd 136 strain) rhabditoidea, steinernematidae)]. | | 1977 | 561485 |
| studies on naturally occurring filarial infections in dogs in lebanon. i. dipetalonema reconditum. | a survey for filarial parasites was carried out on dogs in lebanon. the peripheral blood was examined for microfilariae and the skins and carcasses for adult worms. three methods were used for blood examination: (a) thick blood films stained with giemsa; (b) a modified knott's technique (methylene blue stained); (c) sodium citrate technique. two species of filarial worm were found, dipetalonema reconditum and another species of dipetalonema which will be described in a later paper. the morpholog ... | 1978 | 566087 |
| [daily and seasonal changes in the oviposition activities of culex pipiens pipiens l. (author's transl)]. | the oviposition activity of c. p. pipiens during summer and autumn has been investigated at two breeding sites in west and north germany. the egg rafts were collected and counted daily or hourly. soon after its begin oviposition reached a high peak and then decreased sharply and faded out towards sunrise. there was an obvious correlation between the hourly maximum number of egg rafts deposited and nightfall. the peak of oviposition regularly followed the sunset with one hour delay. it shifted wi ... | 1979 | 575447 |
| bancroftian filariasis in puerto limón, costa rica. | in four neighborhoods of puerto limón, a caribbean coastal city in a tropical rainforest area of costa rica, examination of 1-ml samples of night blood from 1,142 randomly selected, and 1,196 associated, persons by the knott and filter-chamber techniques revealed microfilariae of wuchereria bancrofti in about 3% of the 2,338 samples. the frequency of infection was higher in males (3.9%) than in females (1.9%), higher in persons of black (4.1%) than of white (1.0%) race, and highest in persons ag ... | 1977 | 596512 |
| the influence of the gene sb in culex pipiens on the development of sub-periodic brugia malayi and wuchereria bancrofti. | the gene sb (filarial susceptibility, brugia pahangi) in culex pipiens controls the development also of sub-periodic b. malayi, but has no influence on the development of periodic wuchereria bancrofti (ceylon strain). c.p. fatigans (kuala lumpur), c.p. molestus (london) and aedes aegypti (re fm strain) were all susceptible to the ceylon strain of w. bancrofti, with susceptibility rate of 90.3%, 92.9% and 52.6% respectively. however, a low proportion of the larvae in a. aegypti developed to matur ... | 1977 | 596959 |
| on the escape of infective filarial larvae from the mosquitoes. | experimentally infected females of culex pipiens fatigans carrying infective larvae of wuchereria bancrofti were fed, on the 16th day p.i., on four different solutions, which were offered "cold" (24 degrees c) or "warm" (34 degrees c) in petri dishes as open fluids. thus the sucking mosquitoes did not have to bend their labia. only the "warm" human serum stimulated any considerable number of infective larvae (24.8%) to leave the mouthparts of the mosquitoes. 1289 infective c. fatigens females lo ... | 1977 | 601855 |
| isozymes of culex pipiens quinquefasciatus (diptera: culicidae). ii. genetics of an alcohol dehydrogenase. | | 1977 | 609079 |
| hematophagous insects as vectors for frog trypanosomes. | experimental infections of three hematophagous arthropods (rhodnius prolixus, aedes aegypti, and culex pipiens) with a trypanosome of the trypanosoma rotatorium complex found in the frogs hyla crepitans and leptodactylus insularum revealed that a. aegypti is a good host for the flagellate; the course of development in the intestinal tract of the mosquito is described from 15 minutes to 168 hours. c. pipiens showed only low intestinal infections and r. prolixus did not permit development of the p ... | 1977 | 615322 |
| the larvicide effect of some local and foreign chemical products (insecticides and detergents) on the anopheles labranchiae atroparvus and culex pipiens autogenicus. | | 1977 | 615572 |
| evaluation of the d3 cytoplasmic incompatible strain of culex pipiens fatigans in laboratory and field cages. | | 1977 | 615851 |
| further studies on variation of cytoplasmic incompatibility in the culex pipiens complex. | | 1977 | 615852 |
| some observations on resting and swarming behaviour of culex pipiens fatigans in an urban situation. | | 1977 | 615854 |
| a study on some aspects of culex pipiens fatigans population in an urban area, faridabad, northern india. | | 1977 | 615856 |
| the density dependence of larval mortality of culex pipiens fatigans in an urban situation and prediction of its effects on genetic control operations. | | 1977 | 615857 |
| mass rearing of culex pipiens fatigans under ambient conditions. | | 1977 | 615858 |
| isolation of st. louis encephalitis virus from overwintering culex pipiens mosquitoes. | two strains of st. louis encephalitis virus were isolated from overwintering mosquitoes collected in maryland and pennsylvania during january and february 1977. there isolations from culex pipiens constitute evidence that a mosquito-borne flavivirus can persist in a vector mosquito in temperate climates during the winter season. | 1978 | 628843 |
| amino acid requirements of the mosquito culex pipiens: asparagine essential. | | 1978 | 632612 |
| toxic activity of bacillus sphaericus ssii-1 for mosquito larvae. | using larvae of the mosquito culex pipiens var. quinquefasciatus as a bioassay system, we have verified an earlier proposal that pathogenicity of bacillus sphaericus ssii-1 is a toxin-mediated rather than an infectious process. chloroform or ultraviolet-light treatments that decreased the viable count of ssii-1 cells by 4 or 5 logs did not significantly alter the ability of the bacterial cells to kill larvae. three lines of evidence indicated that toxic activity was not related to sporulation: ( ... | 1978 | 640722 |
| induction of high resistance to permethrin in culex pipiens quinquefasciatus. | | 1978 | 649829 |
| a light and electron microscope study of rickettsia-like organisms in the ovaries of mosquitoes of the aedes scutellaris group. | the ovaries from some members of the aedes scutellaris group were examined by light and electron microscopy to locate rickettsia-like organisms, and culex pipiens fatigans was used as a control. it was found that light microscopy was unsatisfactory for this purpose since none of the available staining techniques demonstrates the organisms clearly and diagnostically. with the electron microscope it was shown that the organisms were by no means as common in the mosquitoes of the a. scutellaris gro ... | 1978 | 666398 |
| follicle cell bridges in the mosquito ovary: syncytia formation and bridge morphology. | in the mosquito, culex pipiens quinqefasciatus, the follicle cells enveloping the oocyte and the nurse cells are connected by intercellular bridges. the bridges are formed by incomplete cytokinesis, and they persist for more than 30 h after their formation. reconstructions from serial sections showed that one syncytial group contained at least 32 cells; several cells continued outside the series. the cells in a syncytium divide asynchronously; this results in an irregular, branched orgainzation. ... | 1978 | 670316 |
| the ultrastructure of the rickettsia-like microorganism wolbachia pipientis and associated virus-like bodies in the mosquito culex pipiens. | | 1978 | 671578 |
| autogeny in east african culex pipiens quinquefasciatus (=fatigans) | | 1978 | 675795 |
| [dynamics of populations in an urban and underground resting place of culex pipiens l. (diptera, culicidae) (author's transl)]. | an urban and underground resting place of culex pipiens has been examinated during one year. many females (28% in september, 70% in january) do not find sexual partners. the cause is a mixing of autogenous and anautogenous forms in the place even if it seems perfectly closed. | 1978 | 677724 |
| meiotic chromosome pairing and synaptonemal complex transformation in culex pipiens oocytes. | the synaptonemal complexes of the oocytes of the mosquito culex pipiens quinquefasciatus have been reconstructed from serial sections. a diffuse structure, probably a chromocenter composed of centromeric heterochromatin, was present during pachytene. as no synaptonemal complexes were visible inside the chromocenter the continuity of the 2 arms of a bivalent was lost. the telomeric ends were clustered on a small area of the nuclear membrane in a bouquet arrangement; they were associated in pairs, ... | 1978 | 743906 |
| "curing" wolbachia infections in culex pipiens. | | 1975 | 808618 |
| [host range of drosophila melanogaster c virus among diptera and lepidoptera (author's transl)]. | the host range of the c picornavirus of drosophila melanogaster was studied, using numerous strains of drosophila together with four other genera of diptera and two species of lepidoptera. c virus was injected into the different hosts and serially passaged in them. the extracts from each passage were biologically assayed on virus free d. melanogaster. four different situations were found. 1) a high level of multiplication leading, in 45 strains of drosophilidae, to the early death of the hosts. ... | 1976 | 823856 |
| population analysis of culex pipiens fatigans wied. (diptera: culicidae) under laboratory conditions. | | 1977 | 845884 |
| chromosomal polymorphism in different populations of culex pipiens fatigans during meiosis. | | 1977 | 877318 |
| dietary nucleotide requirements of the mosquito, culex pipiens. | | 1977 | 886193 |
| selection for partial compatibility with aged and previously mated males in culex pipiens fatigans (diptera: culicidae). | | 1977 | 903940 |
| susceptibility to brugia pahangi of geographical strains of culex pipiens fatigans. | five strains of culex pipiens fatigans from kuala lumpur, tanga, bobo dioulasso, ibadan and maracay were tested for susceptibility to brugia pahangi. the mosquitoes were membrane-fed on infected blood in which the parasite density ranged from 1-3 to 20-4 mff/mm(3). the susceptibility rates were low, and were not directly related to the parasitaemia. if the susceptible individuals represent homozygotes for the gene sb (the gene controlling susceptibility to b pahangi in c. pipiens), the gene freq ... | 1977 | 921367 |
| the effect of anticoagulant on the early migration of brugia pahangi microfilariae in culex pipiens susceptible or refractory to b. pahangi. | | 1977 | 921368 |
| the fate of ingested brugia pahangi microfilariae in susceptible and refractory strains of culex pipiens and aedes aegypti. | the uptake and migration of microfilariae of brugia pahangi in susceptible and refractory culex pipiens and aedes aegypti were compared after membrane-feeding the mosquitoes on infected blood and anti-coagulant. there was no difference between the strains within each species in the pattern of migration, but in c pipiens only 24% of the microfilariae reached the thorax whereas in a. aegypti 73-6% were successful. in both susceptible strains the filariae in the thorax developed normally to maturit ... | 1977 | 921369 |
| [gonotrophic relations in mosquitoes, culex pipiens l., in repeated bloodsucking during 1 cycle]. | | 1977 | 927356 |
| persistence in continuous light of a circadian rhythm in the mosquito culex pipiens fatigans wied. | | 1976 | 934281 |
| [gonotrophic dissociation in culex pipiens pipiens l. (author's transl)]. | under certain conditions gonotrophic dissociation has been observed in culex pipiens pipiens. to contribute to a better understanding of the factors which govern the appearance of this phenomenon and of its ecological importance a population in northern germany has been investigated. follicular development, feeding activity and occurrence of gonotrophic dissociation were examined in females obtained from wild-caught larval stages and kept under outdoor conditions after emergence in july and augu ... | 1976 | 943871 |
| esterases in the mosquito culex pipiens pipiens l: formal genetics and polymorphism of adult esterases. | the genetics of two esterase loci active in autogenous adults of the mosquito culex pipiens pipiens l. has been studied by means of starch gel electrophoresis. three alleles at the est-1 locus and eight at the est-2 locus are described. both loci have a null allele. active alleles are codominant and there is no hybrid enzyme in heterozygotes. the est-1 locus codes esterases preferentially hydrolyzing alpha-naphthylacetate and the est-2 locus esterases preferentially hydrolyzing beta-naphthylacet ... | 1976 | 971293 |
| paracentric inversion in culex pipiens. | | 1976 | 978686 |
| chemically defined dietary media for larvae of the mosquito culex pipiens (diptera: culicidae): effects of colloid texturizers. | | 1976 | 1011231 |
| the inheritance of pigmented-paddle (du2) in culex pipiens (diptera: culicidae). | | 1976 | 1011238 |
| dominant-and-recessive epistasis in a homeotic mosquito mutant. | following selection for 15 generations a pure strain of a homeotic mutant spur was isolated from a brazilian population of the mosquito culex pipiens fatigans. monohybrid crosses showed a 13:3 segregation indicating dominant-and-recessive epistasis for wild-type vs. spur. this implies that a dominant allele at one locus and a recessive at the other interact to produce the mutant phenotype. dihybrid crosses with linkage group ii markers yellow and ruby gave 39:13:9:3 ratios indicating independent ... | 1976 | 1022329 |
| [effect of the streptothricin group on bloodsucking mosquitoes. 3. residual effect of aqueous solutions of phytobacteriomycin on the larva of culex pipiens l]. | | 1976 | 1024141 |
| [detection of infusoria tetrahymena stegomyiae (keilin) in the larvae of culex pipiens molestus and aedes aegypti]. | | 1976 | 1025470 |
| control of culex pipiens fatigans(w) by the larvivorous fish poecillia reticulata and by removal of debris from the breeding habitat. | twice weekly removal of floating debris from two polluted ponds in bangkok resulted in 75% reduction of immature populations of c.p. fatigans for seven weeks. subsequent introduction of the guppy poecilia reticulata at 10 fish per m2 further reduced the aquatic population to 2% of the pretreatment level during 12 weeks. when debris removal was discontinued, partial recovery of the larval density was observed. when fish were introduced in a plot without prior debris removal, there was no reductio ... | 1976 | 1027109 |
| [ecology of culex pipiens fatigans larvae in an area of high endemicity of bancroftian filariasis (author's transl)]. | culex pipiens fatigans in the main vector of bancroftian filariasis in the mayotte island (comores) where it imposes an important health problem. the breeding-sites of c. p. fatigans are either man-made (latrines, cesspools, various containers), or natural (polluted water of estuaries of some rivers). the man-made breeding-sites are not similarly distributed in the different localities of the island. their distribution varies according to the customs of the inhabitants, size and site of the comm ... | 1975 | 1096384 |
| pathogenesis of bacillus sphaericus strain ssii-1 infections in culex pipiens quinquefasciatus (equal to c. pipiens fatigans) larvae. | | 1975 | 1117164 |
| the inheritance of melanotic larva in culex pipiens l. | | 1975 | 1123834 |
| [genetics of yellow-larva and ruby-eye mutants in the mosquito culex pipiens fatigans in brazil (author's transl)]. | | 1975 | 1153826 |
| organophosphorus multiresistance in culex pipiens quinquefasciatus in california. | | 1975 | 1159164 |
| seasonal changes in population structure of culex pipiens quinquefasciatus say (diptera: culicidae): study of an isolated population. | | 1975 | 1159738 |
| trehalose of culex pipiens fatigans. | trehalose was found to occur in the mosquito, culex pipiens fatigans, to the extent of 23 to 49% of total free sugars in different developmental stages of the insect. induction of stress to the insects led to significant reduction in the trehalose of larvae and glucose of adults. the label from alpha,alpha'-u-14c-trehalose readily incorporated into lipids of the adults in which triglycerides seemed to undergo rapid turnover. | 1975 | 1171775 |
| interrelationships between selected meteorologic phenomena and immature stages of culex pipiens quinquefasciatus say: study of an isolated population. | | 1975 | 1181434 |
| the behaviour of a population of mosquitoes culex pipiens complex l. (diptera: culicidae) in human settlements in the conditions of the baltic coastal area near gdańsk. | | 1975 | 1203601 |
| [biocoenetic regulation of the growth and development of culex pipiens pipiens (l.) larvae]. | | 1975 | 1204432 |
| male-linked translocations and the control of insect pest populations. | published data on an experimental release of culex pipiens carrying a male-linked translocation are re-examined and it is shown that the steady decline in translocation frequency after termination of releases agrees with theoretical expectations, because of the selective disadvantage of translocation heterozygote males. systems based on negative heterosis or meiotic drive are considered whereby it might be possible to prolong the population control which would be achieved by a short term release ... | 1975 | 1204723 |
| [study of the effect of antibiotics of the group of streptothricin on blood-sucking mosquitoes. i. the effect of phytobacteriomycin, polymycin and grisine on larvae of culex pipiens molestus forsk mosquitoes]. | | 1975 | 1214722 |