Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| dengue: an escalating public health problem in latin america. | dengue infection is a significant and escalating public health problem in latin america. its re-emergence and subsequent rise in the region over the past 50 years has largely been caused by a combination of a lack of political will, the radical growth of urban populations, migration flow and insufficient financial resources. its increased incidence has been compounded by climate change, poor sanitation and extreme poverty, which lead to more breeding sites of the mosquito vector aedes aegypti. i ... | 0 | 22668444 |
| the dengue situation in africa. | dengue outbreaks and epidemics have been reported in all regions of africa, and it is believed that all four dengue virus serotypes are in circulation. available data suggest that dengue is endemic to 34 african countries and that aedes aegypti mosquitoes--the primary vector for dengue transmission--are known to be present in all but five countries. whether populations in africa are susceptible to dengue at the same rates as in asia and latin america is difficult to determine from the available ... | 0 | 22668445 |
| persistent emergence of dengue. | 0 | 15898171 | |
| community-based control of aedes aegypti by using mesocyclops in southern vietnam. | we previously reported a new community-based mosquito control strategy that resulted in elimination of aedes aegypti (linn.) in 40 of 46 communes in northern and central vietnam, and with annual recurrent total costs (direct and indirect) of only $0.28-$0.89 international dollars per person. this control strategy was extended to four provinces in southern vietnam in long an and hau giang (2004-2007) and to long an, ben tre, and vinh long (2005-2010). in a total of 14 communes with 124,743 reside ... | 0 | 22556087 |
| the economic burden of dengue. | 0 | 22556068 | |
| return of epidemic dengue in the united states: implications for the public health practitioner. | conditions that facilitate sustained dengue transmission exist in the united states, and outbreaks have occurred during the past decade in texas, hawaii, and florida. more outbreaks can also be expected in years to come. to combat dengue, medical and public health practitioners in areas with mosquito vectors that are competent to transmit the virus must be aware of the threat of reemergent dengue, and the need for early reporting and control to reduce the impact of dengue outbreaks. comprehensiv ... | 0 | 22547856 |
| complementary chimeric isoforms reveal dscam1 binding specificity in vivo. | dscam1 potentially encodes 19,008 ectodomains of a cell recognition molecule of the immunoglobulin (ig) superfamily through alternative splicing. each ectodomain, comprising a unique combination of three variable (ig) domains, exhibits isoform-specific homophilic binding in vitro. although we have proposed that the ability of dscam1 isoforms to distinguish between one another is crucial for neural circuit assembly, via a process called self-avoidance, whether recognition specificity is essential ... | 0 | 22542180 |
| evolution of bmp signaling in drosophila oogenesis: a receptor-based mechanism. | the bone morphogenetic protein (bmp) signaling pathway is a conserved regulator of cellular and developmental processes in animals. the mechanisms underlying bmp signaling activation differ among tissues and mostly reflect changes in the expression of pathway components. bmp signaling is one of the major pathways responsible for the patterning of the drosophila eggshell, a complex structure derived from a layer of follicle cells (fcs) surrounding the developing oocyte. activation of bmp signalin ... | 0 | 22768927 |
| infertility resulting from transgenic i-ppoi male anopheles gambiae in large cage trials. | anopheles gambiae is the primary vector of malaria in sub-saharan africa and is a potential target of genetic control programs. we determined the capacity of male a. gambiae created by germline transformation to introduce infertility into stable age-distribution populations. we also determined effects of the transgenes on life history. | 0 | 22595271 |
| the effect of ivermectin in seven strains of aedes aegypti (diptera: culicidae) including a genetically diverse laboratory strain and three permethrin resistant strains. | seven different strains of aedes aegypti (l.), including a genetically diverse laboratory strain, three laboratory-selected permethrin-resistant strains, a standard reference strain, and two recently colonized strains were fed on human blood containing various concentrations of ivermectin. ivermectin reduced adult survival, fecundity, and hatch rate of eggs laid by ivermectin-treated adults in all seven strains. the lc50 of ivermectin for adults and the concentration that prevented 50% of eggs f ... | 0 | 22493855 |
| study on the correlation of premises condition index and the presence of larvae of aedes species mosquitoes in human dwellings of the cuddalore district of tamil nadu, india. | it is concluded that this study helps in conducting rapid survey to identify the presence of aedes larvae with a minimum number of staff for both inspection and treatment of aedes larvae during the epidemic situation. | 0 | 24159479 |
| mosquitocidal properties of natural product compounds isolated from chinese herbs and synthetic analogs of curcumin. | because of resistance to current insecticides and to environmental, health, and regulatory concerns, naturally occurring compounds and their derivatives are of increasing interest for the development of new insecticidal compounds against vectors of disease-causing pathogens. fifty-eight compounds, either extracted and purified from plants native to china or synthetic analogs of curcumin, were evaluated for both their larvicidal activity against aedes aegypti (l.) and their ability to inhibit bin ... | 0 | 22493854 |
| aedes albopictus mosquitoes, yucatan peninsula, mexico. | 0 | 22377491 | |
| wedding fever: fever in the returning traveler. diagnosis: dengue fever. | 0 | 23851538 | |
| distinct intracellular motifs of delta mediate its ubiquitylation and activation by mindbomb1 and neuralized. | dsl proteins are transmembrane ligands of the notch receptor. they associate with a ring (really interesting new gene) family e3 ubiquitin ligase, either neuralized (neur) or mindbomb 1 (mib1), as a prerequisite to signaling. although neur and mib1 stimulate internalization of dsl ligands, it is not known how ubiquitylation contributes to signaling. we present a molecular dissection of the intracellular domain (icd) of drosophila melanogaster delta (dl), a prototype dsl protein. using a cell-bas ... | 0 | 22162135 |
| aedes aegypti mosquitoes imported into the netherlands, 2010. | during summer 2010, aedes aegypti mosquitoes were discovered in the netherlands. using genetic markers, we tracked the origin of these mosquitoes to a tire shipment from miami, florida, usa. surveillance of tire exports from the united states should be included as part of a comprehensive surveillance system. | 0 | 22172498 |
| spatial stability of adult aedes aegypti populations. | vector control programs could be more efficient by identifying the location of highly productive sites of aedes aegypti. this study explored if the number of female adults of ae. aegypti in bg-sentinel traps was clustered and if their spatial distribution changed in time in two neighborhoods in san juan, puerto rico. traps were uniformly distributed across each neighborhood (130 m from each other), and samples were taken every 3 weeks. global and local spatial autocorrelations were explored. spa ... | 0 | 22144449 |
| the monarch butterfly genome yields insights into long-distance migration. | we present the draft 273 mb genome of the migratory monarch butterfly (danaus plexippus) and a set of 16,866 protein-coding genes. orthology properties suggest that the lepidoptera are the fastest evolving insect order yet examined. compared to the silkmoth bombyx mori, the monarch genome shares prominent similarity in orthology content, microsynteny, and protein family sizes. the monarch genome reveals a vertebrate-like opsin whose existence in insects is widespread; a full repertoire of molecu ... | 0 | 22118469 |
| new approaches to the inhibition of replication of viral pathogens. | this meeting was a special symposium sponsored by the american society for biochemistry and molecular biology. the conference was held in gangzhou, china on 24-26 july 2011 and shared a venue with the society of chinese bioscientists in america thirteenth international symposium. over 150 participants from the americas, europe, asia and australia attended the meeting. this article focuses on two areas of research in which there have been exciting developments that have application to the develop ... | 0 | 22029515 |
| genetics and morphology of aedes aegypti (diptera: culicidae) in septic tanks in puerto rico. | dengue viruses, primarily transmitted by the mosquito aedes aegypti (l.), affect an estimated 50-100 million people yearly. traditional approaches to control mosquito population numbers, such as the use of pesticides, have had only limited success. atypical mosquito behavior may be one reason why current vector control efforts have been less efficacious than expected. in puerto rico, for example, adult ae. aegypti have been observed emerging from septic tanks. interestingly, adults emerging from ... | 0 | 22238867 |
| public health as an international problem: 1944. | 0 | 22676498 | |
| advances in developing a climate based dengue outbreak models in dhaka, bangladesh: challenges & opportunities. | 0 | 22885257 | |
| characterization of lipophorin receptor (lpr) mediating the binding of high density lipophorin (hdlp) in the silkworm, bombyx mori. | in an earlier report, we described the gene encoding a lipophorin receptor (lpr) of the silkworm, bombyx mori l. (lepidoptera: bombycidae), and recombinant expression of the protein. the present study was performed to characterize the corresponding native bmlpr and its binding characteristics. polyclonal anti-lpr antibody prepared against the cloned receptor fragment from the cytoplasmic domain specifically detected the receptor. through immunoblotting, ovary and brain membrane protein samples o ... | 0 | 22236107 |
| cdna cloning and expression pattern of homolog of alpha subunit of platelet-activating factor acetylhydrolase ib from the chinese oak silkworm, antheraea pernyi. | platelet-activating factor acetylhydrolase (paf-ah) is an enzyme that catalyzes the hydrolysis of platelet-activating factor (paf). a homolog of alpha subunit of paf-ah(ib) from antheraea pernyi (guérin-méneville) (lepidoptera: saturniidae) (appafahibĪ±) was isolated and characterized. the obtained cdna sequence was 1843 base pairs (bp) long with an open reading frame (ore) of 678 bp encoding 225 amino acids. the predicted amino acid sequence shared several conserved features of paf-ahs of other ... | 0 | 22224584 |
| lessons from studying insect symbioses. | as in mammals, insect health is strongly influenced by the composition and activities of resident microorganisms. however, the microbiota of insects is generally less diverse than that of mammals, allowing microbial function in insects to be coupled to individual, identified microbial species. this trait of insect symbioses facilitates our understanding of the mechanisms that promote insect-microbial coexistence and the processes by which the microbiota affect insect well-being. as a result, ins ... | 0 | 22018236 |
| the basic reproduction number r0 and effectiveness of reactive interventions during dengue epidemics: the 2002 dengue outbreak in easter island, chile. | we use a stochastic simulation model to explore the effect of reactive intervention strategies during the 2002 dengue outbreak in the small population of easter island, chile. we quantified the effect of interventions on the transmission dynamics and epidemic size as a function of the simulated control intensity levels and the timing of initiation of control interventions. because no dengue outbreaks had been reported prior to 2002 in easter island, the 2002 epidemic provided a unique opportunit ... | 0 | 24245625 |
| evaluation of the traditional and revised world health organization classifications of dengue cases in brazil. | dengue is a worldwide public health problem with approximately 50 million cases reported annually. the world health organization proposed a revised classification system in 2008 to more effectively identify the patients who are at increased risk of complications from dengue. few studies have validated this new classification system in clinical practice. we conducted a cross-sectional study of patients hospitalized for dengue in dourados, mato grosso do sul, brazil, to evaluate the capacity of th ... | 0 | 24212835 |
| birth of three stowaway-like mite families via microhomology-mediated miniaturization of a tc1/mariner element in the yellow fever mosquito. | eukaryotic genomes contain numerous dna transposons that move by a cut-and-paste mechanism. the majority of these elements are self-insufficient and dependent on their autonomous relatives to transpose. miniature inverted repeat transposable elements (mites) are often the most numerous nonautonomous dna elements in a higher eukaryotic genome. little is known about the origin of these mite families as few of them are accompanied by their direct ancestral elements in a genome. analyses of mites in ... | 0 | 24068652 |
| bacteria mediate oviposition by the black soldier fly, hermetia illucens (l.), (diptera: stratiomyidae). | there can be substantial negative consequences for insects colonizing a resource in the presence of competitors. we hypothesized that bacteria, associated with an oviposition resource and the insect eggs deposited on that resource, serve as a mechanism regulating subsequent insect attraction, colonization, and potentially succession of insect species. we isolated and identified bacterial species associated with insects associated with vertebrate carrion and used these bacteria to measure their i ... | 0 | 23995019 |
| leishmania amazonensis exhibits phosphatidylserine-dependent procoagulant activity, a process that is counteracted by sandfly saliva. | leishmania parasites expose phosphatidylserine (ps) on their surface, a process that has been associated with regulation of host's immune responses. in this study we demonstrate that ps exposure by metacyclic promastigotes of leishmania amazonensis favours blood coagulation. l. amazonensis accelerates in vitro coagulation of human plasma. in addition, l. amazonensis supports the assembly of the prothrombinase complex, thus promoting thrombin formation. this process was reversed by annexin v whic ... | 0 | 24037188 |
| distribution, seasonal variation & dengue transmission prediction in sisaket, thailand. | environmental factors including weather variables may play a significant role in the transmission of dengue. this study investigated the effect of seasonal variation on the abundance of aedes aegypti and ae. albopictus larvae and explored the impact of weather variability on dengue transmission in sisaket, thailand. | 0 | 24135179 |
| rapid evolution of reduced receptivity to interspecific mating in the dengue vector aedes aegypti in response to satyrization by invasive aedes albopictus. | in this paper we examine the effect of reproductive interference on the dynamics of two mosquito vectors of public health concern and add to the growing literature on the strength and speed with which interspecific reproductive interference may drive evolution. recent evidence supports a role for asymmetric reproductive interference, or satyrization, in competitive displacements of aedes aegypti by aedes albopictus. however, populations of a. aegypti sympatric with a. albopictus in nature evolve ... | 0 | 24563572 |
| identification and characterization of heat shock 70 genes in aedes aegypti (diptera: culicidae). | heat shock genes are highly evolutionarily conserved and are expressed to varying degrees in all organisms in response to stress. heat shock 70 (hsp70) genes have been well characterized in a number of organisms, most notably drosophila melanogaster, but not as yet for any of the major arthropod-borne viral mosquito vectors. to identify hsp70 genes in the yellow fever mosquito, aedes aegypti (diptera: culicidae), basic local alignment searches of the ae. aegypti genome were performed using d. me ... | 0 | 19496419 |
| density-dependent intraspecific competition in the larval stage of aedes aegypti (diptera: culicidae): revisiting the current paradigm. | density-dependent intraspecific competition has been considered an important determinant of the dynamics of larval stages of aedes aegypti. a model was published in 1984 providing a mathematical description of this density dependence, based on field data, that has since been widely used. this description, however, is based on the strong assumption that all mortality is density-dependent. we re-examine the data without this premise and find a reduced importance of density dependence, as well as a ... | 0 | 19496407 |
| mucopolysaccharidosis type i in 21 czech and slovak patients: mutation analysis suggests a functional importance of c-terminus of the idua protein. | mucopolysaccharidosis type i (mps i) is an autosomal recessive lysosomal storage disorder that is caused by a deficiency of the enzyme alpha-l-iduronidase (idua). of the 21 czech and slovak patients who have been diagnosed with mps i in the last 30 years, 16 have a severe clinical presentation (hurler syndrome), 2 less severe manifestations (scheie syndrome), and 3 an intermediate severity (hurler/scheie phenotype). mutation analysis was performed in 20 mps i patients and 39 mutant alleles were ... | 0 | 19396826 |
| the ldl receptor. | in this article, the history of the ldl receptor is recounted by its codiscoverers. their early work on the ldl receptor explained a genetic cause of heart attacks and led to new ways of thinking about cholesterol metabolism. the ldl receptor discovery also introduced three general concepts to cell biology: receptor-mediated endocytosis, receptor recycling, and feedback regulation of receptors. the latter concept provides the mechanism by which statins selectively lower plasma ldl, reducing hear ... | 0 | 19299327 |
| mosquito wars. | 0 | 19377708 | |
| editorial: 2008 year in review. | 0 | 25567842 | |
| on-chip solid-phase extraction pre-concentration/focusing substrates coupled to atmospheric pressure matrix-assisted laser desorption/ionization ion trap mass spectrometry for high sensitivity biomolecule analysis. | atmospheric pressure matrix-assisted laser desorption/ionization (ap-maldi) has proven a convenient and rapid method for ion production in the mass spectrometric (ms) analysis of biomolecules. ap-maldi and electrospray ionization (esi) sources are easily interchangeable in most mass spectrometers. however, ap-maldi suffers from less-than-optimal sensitivity due to ion losses during transport from the atmosphere into the vacuum of the mass spectrometer. here, we study the signal-to-noise ratio (s ... | 0 | 19140128 |
| dengue transmission. | 0 | 19270769 | |
| revisiting the cellular mechanisms of strong luminal alkalinization in the anterior midgut of larval mosquitoes. | here we critically review two recent hypotheses about the mechanism of strong alkalinization by the anterior midgut of mosquito larvae and our tests of these hypotheses. we present experimental evidence against the major components of transport models proposed in these hypotheses. measurements of the transapical and transbasal proton electrochemical gradients provide an indication of driving forces faced by and generated by the transport mechanisms of the tissue. these measurements confirmed tha ... | 0 | 19151212 |
| molecular analysis of juvenile hormone analog action in controlling the metamorphosis of the red flour beetle, tribolium castaneum. | the juvenile hormone analogs (jha) are known to disrupt insect development but the molecular mechanisms of their action have been studied only in a few model insects belonging to orders diptera and lepidoptera. here, we investigated the mechanisms of jha action in red flour beetle, tribolium castaneum, belonging to the order coleoptera. application of jha during penultimate and final instar larval stages blocked larval-pupal metamorphosis and induced supernumerary larval molts. when compared to ... | 0 | 19072925 |
| screening of uruguayan plants for deterrent activity against insects. | we evaluated the anti-insectan activity of extracts from different vegetative parts of ten plant species native to uruguay. the selected plants belong to five families: bignoniaceae: clytostoma callistegioides, dolichandra cynanchoides, macfadyena unguis-cati; sapindaceae: dodonaea viscosa, allophylus edulis, serjania meridionalis; lamiaceae: salvia procurrens, salvia guaranitica; solanaceae: lycium cestroides; and phytolaccaceae: phytolacca dioica. the extracts were evaluated in independent bio ... | 0 | 20046902 |
| awareness and support of release of genetically modified "sterile" mosquitoes, key west, florida, usa. | after a dengue outbreak in key west, florida, during 2009-2010, authorities, considered conducting the first us release of male aedes aegypti mosquitoes genetically modified to prevent reproduction. despite outreach and media attention, only half of the community was aware of the proposal; half of those were supportive. novel public health strategies require community engagement. | 0 | 25625795 |
| use of insecticide-treated house screens to reduce infestations of dengue virus vectors, mexico. | dengue prevention efforts rely on control of virus vectors. we investigated use of insecticide-treated screens permanently affixed to windows and doors in mexico and found that the screens significantly reduced infestations of aedes aegypti mosquitoes in treated houses. our findings demonstrate the value of this method for dengue virus vector control. | 0 | 25625483 |
| aversion and attraction through olfaction. | sensory cues that predict reward or punishment are fundamental drivers of animal behavior. for example, attractive odors of palatable food or a potential mate predict reward, while aversive odors of pathogen-laced food or a predator predict punishment. aversive and attractive odors can be detected by intermingled sensory neurons that express highly related olfactory receptors and display similar central projections. these findings raise basic questions of how innate odor valence is extracted fro ... | 0 | 25649823 |
| chikungunya on the move. | in december 2013, chikungunya virus (chikv) transmission was reported for the first time in the americas. since then it has spread quickly, with more than 1 million suspected and confirmed cases being reported in one year, where previously there were only sporadic travel-related cases. transmission patterns suggest that the epidemic in the southern hemisphere is only beginning and that chikungunya will not go away anytime soon. | 0 | 25649340 |
| integrating participatory community mobilization processes to improve dengue prevention: an eco-bio-social scaling up of local success in machala, ecuador. | this project investigates the effectiveness and feasibility of scaling-up an eco-bio-social approach for implementing an integrated community-based approach for dengue prevention in comparison with existing insecticide-based and emerging biolarvicide-based programs in an endemic setting in machala, ecuador. | 0 | 25604763 |
| effectiveness and feasibility of long-lasting insecticide-treated curtains and water container covers for dengue vector control in colombia: a cluster randomised trial. | long-lasting insecticide-treated net (llin) window and door curtains alone or in combination with llin water container covers were analysed regarding effectiveness in reducing dengue vector density, and feasibility of the intervention. | 0 | 25604762 |
| long-lasting insecticide-treated house screens and targeted treatment of productive breeding-sites for dengue vector control in acapulco, mexico. | long-lasting insecticidal net screens (llis) fitted to domestic windows and doors in combination with targeted treatment (tt) of the most productive aedes aegypti breeding sites were evaluated for their impact on dengue vector indices in a cluster-randomised trial in mexico between 2011 and 2013. | 0 | 25604761 |
| entomological impact and social participation in dengue control: a cluster randomized trial in fortaleza, brazil. | this study intended to implement a novel intervention strategy, in brazil, using an ecohealth approach and analyse its effectiveness and costs in reducing aedes aegypti vector density as well as its acceptance, feasibility and sustainability. the intervention was conducted from 2012 to 2013 in the municipality of fortaleza, northeast brazil. | 0 | 25604760 |
| improved dengue fever prevention through innovative intervention methods in the city of salto, uruguay. | uruguay is located at the southern border of aedes aegypti distribution on the south american sub-continent. the reported dengue cases in the country are all imported from surrounding countries. one of the cities at higher risk of local dengue transmission is salto, a border city with heavy traffic from dengue endemic areas. | 0 | 25604764 |
| an extraovarian protein accumulated in mosquito oocytes is a carboxypeptidase activated in embryos. | we report a phenomenon previously unknown for oviparous animals; in aedes aegypti mosquitoes a serine carboxypeptidase is synthesized extraovarially and then internalized by oocytes. the cdna encoding mosquito vitellogenic carboxypeptidase (vcp) was cloned and sequenced. the vcp cdna hybridizes to a 1.5-kilobase mrna present only in the fat body of vitellogenic females. the deduced amino acid sequence of vcp shares significant homology with members of the serine carboxypeptidase family. binding ... | 0 | 1961751 |
| polyamine synthesis by the mermithid nematode romanomermis culicivorax. | the polyamine and amino acid composition of the mermithid nematode, romanomermis culicivorax, and its host, aedes aegypti, was determined. putrescine, spermidine, spermine, cadaverine and two acetylated spermidine derivatives were present in parasitic juveniles, newly-emerged post-parasites, and eggs of r. culicivorax. whole insect homogenates of fourth-instar a. aegypti contained the same array of polyamines, except that the putrescine:spermidine ratio was the inverse of that in parasitic r. cu ... | 0 | 19287579 |
| what can be learnt about selection from gene frequency distribution? | polymorphism has been studied at the esterase 6 locus in the yellow fever mosquito aedes aegypti (l.) in laboratory stocks. at least 12 alleles are present, with up to four coexisting in a stock. the allele frequency distribution is quite sharply peaked at a mode of about 0.25. the experimental data are compared with the results of simulation based on two models, one in which the initial global distribution is taken to be the stationary distribution obtained from the neutral model assuming m = 4 ... | 0 | 3792826 |
| transport of palmitic acid across the tegument of the entomophilic nematode romanomermis culicivorax. | romanomermis culicivorax juveniles, dissected out of aedes aegypti larvae 7 days after infection, were incubated under controlled conditions in isotonic saline containing (1)c-u-palmitic acid to investigate the nature of the transport mechanism(s) used by the nematode for transcuticular uptake of palmitic acid. net uptake of the isotope by the nematode was of a logarithmic nature with respect to time. uptake of palmitic acid was accomplished by a combination of diffusion and a mediated process w ... | 0 | 19295867 |
| effect of aedes aegypti (diptera:culicidae) age on sex ratios in romanomermis culicivorax (nematoda:mermithidae). | first, second, third, early and late fourth-instar larvae, and pupae of aedes aegypti were infected with romanomerrais culicivorax and reared at 20, 25, and 30 c. an increase in the ratio of male to female nematodes was observed with increase in host age at the time of infection at each temperature. the number of pupal and late fourth-instar infections was low, but r. culicivorax continued to develop in adult a. aegypti. since male nematodes were recovered from both male and female hosts infecte ... | 0 | 19295853 |
| glutathione biosynthesis in the aging adult yellow-fever mosquito [aedes aegypti (louisville)]. | our previous findings [hazelton & lang (1978) fed. proc. fed. am. soc. exp. biol. 37(6), 2378 (abstr.)] demonstrated a senescence-specific decrease in glutathione (gsh) concentration in the yellow-fever mosquito aedes aegypti (louisville)]. as a possible mechanism for this change, gsh biosynthesis was investigated in adult mosquitoes of different ages through the life-span. biosynthesis was measured as the incorporation rate of [14c]glycine or [14c]cystine into glutathione. essential information ... | 0 | 6860301 |
| glutathione s-transferase activities in the yellow-fever mosquito [aedes aegypti (louisville)] during growth and aging. | our previous findings [hazelton & lang (1978) fed. proc. fed. am. soc. exp. biol. 37(6), 2378 (abstr.)] demonstrated aging-specific changes in glutathione concentrations in the yellow-fever mosquito [aedes aegypti (louisville)]. a possible mechanism could be increased utilization via glutathione s-transferase. thus glutathione s-transferase activities were measured in mosquito samples from the entire life span, including growth, maturity and senescence. methods were validated for the quantitativ ... | 0 | 6860300 |
| uptake of lipids by the entomophilic nematode romanomermis culicivorax. | romanomermis culicivorax juveniles were dissected out of aedes aegypti larvae 7 days after infection and incubated under controlled conditions in isotonic saline containing a (1)c-labeled fatty acid (palmitic acid), monoacylglycerol (glycerol monoolein), or triacylglycerol (glycerol tripalmate) nutrient source. the mermithid absorbed each of these lipids from the incubation medium, the rate of uptake being greatest for glycerol monoolein. no lipase activity was detected in whole nematode homogen ... | 0 | 19295741 |
| role of a modified ovitrap in the control of aedes aegypti in houston, texas, usa. | a modified ovitrap from which larvae could not escape was employed for one year for the control of aedes aegypti at blossom heights, houston, texas. at the end of this period, the breteau index in the ovitrap area had declined by 36%, in contrast to a sharp increase of nearly 500% in the non-ovitrap area. the premises index in the ovitrap area remained unchanged, while the index in the non-ovitrap area increased by 440%. the problems associated with this control campaign and the use of these "au ... | 0 | 6980740 |
| effects of host diet on romanomermis culicivorax, a mermithid parasite of mosquitoes. | when larval mosquitoes (aedes aegypti) infected with the mermithid nematode romanomermis culicivorax were fed on a diet low in quantity or protein content or both, the number of postparasites which emerged from the hosts decreased and host mortality increased marginally. parasitic development was prolonged and became asynchronous in nutritionally deprived hosts. nematodes emerged from insects infected by more than one nematode before the remaining juveniles comprising such infections had complet ... | 0 | 19300764 |
| the biosynthesis of deoxyribonucleic acid during the life-span of the mosquito. | previous results from this laboratory [kao et al, (1976) biochem. j. 154, 471-480] demonstrated that a low-molecular-weight dna species, "sdna", present in high concentrations during rapid larval growth of the yellow-fever mosquito, aedes aegypti, may be an intermediate in dna replication. we have now determined the life-span profiles of synthetic rates and the steady-state contents of sdna and total dna by radiometric and biochemical procedures and by using mosquitoes grown and maintained under ... | 0 | 938460 |
| a deoxyribonucleic acid-replication intermediate in the growing mosquito. | in previous experiments on growth and aging in the yellow-fever mosquito, aedes aegypti, a low mol. wt. (500000) dna species was found in the supernatant fraction after ultracentrifugation of homogenates of rapidly-growing larvae. this dna species, "sdna", constituted 30-40% of total dna in 2-4-day-old larvae, but was less than 5% in older larvae, pupae and adults. we have now isolated and characterized sdna and initiated experiments to determine its metabolic role. isolated sdna has the same ph ... | 0 | 938459 |
| the ovary as a source of alpha-ecdysone in an adult mosquito. | the ovaries of the mosquito aedes aegypti cultured in vitro secrete material that behaves like ecdysone in a radioimmunoassay. the material was identified as alpha-ecdysone by high-resolution liquid and gas-liquid chromatography. secretion reached a maximum 16 hr after a blood meal as shown by bioassay and direct determination. ovariectomy reduced the concentration of ecdysone in the adult after a blood meal. qualitative analysis of whole-body extracts indicated beta-ecdysone to be the principal ... | 0 | 1059110 |
| diminution and enlargement of the mosquito rhabdom in light and darkness. | the rhabdoms of the larval ocelli of the mosquito aedes aegypti undergo morphological light and dark adaptation over periods of hours. the rhabdom enlarges during dark adaptation and grows smaller during light adaptation. diminution is exponential, enlargement linear, and rates of change are proportional to log light intensity. rhabdoms maintained at a constant intensity level off at a constant volume proportional to log intensity. we argue that changes in rhabdom volume after changes in light i ... | 0 | 1176940 |
| ecdysone-mediated stimulation of dopa decarboxylase activity and its relationship to ovarian development in aedes aegypti. | very little dopa decarboxylase activity is detectable in adult female mosquitoes aedes aegypti which have not been allowed to engorge blood. however, when such females are injected with the molting hormone beta-ecdysone a marked stimulation of this enzyme's activity is observable. no stimulation is observed in males similarly injected, nor in females injected with cholesterol or a juvenile hormone mimic. in addition, ecdysone injection initiates ovarian development in these anautogenous non-bloo ... | 0 | 4827909 |
| the control of aedes aegypti during the yellow fever epidemic in luanda, angola, in 1971. | vector control was carried out in three cycles with ulv technical malathion sprayed from aircraft at the application rate of 500 ml/ha. successive reductions of 84%, 93.6%, and 96% in the pretreatment density of a. aegypti were attained, a range of 77-98% being observed over a 24-day period. | 0 | 4543554 |
| spectral sensitivity of larval mosquito ocelli. | the spectral sensitivity of lateral ocelli in both wild-type and white-eyed larvae of the yellow fever mosquito aedes aegypti l. (reared in darkness) was measured by means of the electroretinogram. the spectral sensitivity is maximal at about 520 nm, with a small secondary peak near 370 nm. when allowance is made for some screening and filtering by the eye tissues, the spectral sensitivity is in reasonable agreement with the absorption spectrum of ocellar rhodopsin (lambda(max) = 515 nm). | 0 | 5029552 |
| rhodopsin of the larval mosquito. | larvae of the mosquito aedes aegypti have a cluster of four ocelli on each side of the head. the visual pigment of each ocellus of mosquitoes reared in darkness was characterized by microspectrophotometry, and found to be the same. larval mosquito rhodopsin (lambda(max) = 515 nm) upon short irradiation bleaches to a stable photoequilibrium with metarhodopsin (lambda(max) = 480 nm). on long irradiation of glutaraldehyde-fixed tissues or in the presence of potassium borohydride, bleaching goes fur ... | 0 | 5029551 |
| permeability of the ovarian follicle of aedes aegypti mosquitoes. | the passage of tracers of various molecular weights into resting and vitellogenic ovarian follicles of aedes aegypti mosquitoes was studied ultrastructurally. the outermost layer of the follicular sheath (the basement lamina) is a coarse mechanical filter. it is freely permeable to particles with molecular weights ranging from 12,000 to 500,000 (i.e. cytochrome c, peroxidase, hemoglobin, catalase, ferritin, immunoglobulin (igg)-peroxidase, iron dextran and thorotrast) that have dimensions less t ... | 0 | 4104968 |
| ultra-low-volume ground aerosols of technical malathion for the control of aedes aegypti l. | the efficacy of malathion aerosols applied from the ground was evaluated for the control of ae. aegypti. several techniques for applying the aerosols to an inhabited locality were investigated, and it was found that excellent control of adult mosquitos could be obtained with a dosage of 438 ml/ha. two treatments carried out 3 days apart enabled the adult mosquito population to be reduced by 99%, and it took about 2 weeks to regain its pretreatment level. schedules of treatment and strategies to ... | 0 | 5317014 |
| [aedes aegypti and potential vectors of yellow fever in the democratic republic of somalia and in the french territory of afars and issas]. | 0 | 5316916 | |
| [sensitivity of and resistance to insecticides of aedes aegypti in west africa and methods of control of the vector]. | 0 | 5316917 | |
| population control potential of heterozygous translocations as determined by computer simulations. | a possible method for genetic control of insect vector species involves the use of translocation heterozygotes. the potential of single and double heterozygotes already available in aedes aegypti has been investigated with computer simulations of release strategies. such simulations indicate a possible role for translocation heterozygotes of these types in an insect population characterized by a 5-fold population growth per generation, or less. | 0 | 5317450 |
| survival and development of a tropical mosquito, aedes aegypti, in southern england. | 0 | 5316751 | |
| evaluation of ultra-low-volume insecticide dispensing systems for use in single-engined aircraft and their effectiveness against aedes aegypti populations in south-east asia. | an evaluation study of ultra-low-volume (ulv) spraying of insecticide from aircraft was carried out in thailand, to determine if this technique could be used for the emergency control of aedes aegypti, the major vector of haemorrhagic fever. a small, single-engined aircraft, a cessna-180, was used in the trials and 2 types of spraying equipment were tested; both were found to be equally effective. the aircraft was fitted with 6 spraying nozzles and flew at an altitude of 150 feet (46 m) at a spe ... | 0 | 5309517 |
| [the effect of groups in tests on insecticide resistance in aedes aegypti]. | 0 | 5303669 | |
| heterogeneity in the trinidad ddt-resistant strain and the qs susceptible strain of aedes aegypti l. the isolation of highly resistant and highly susceptible substrains. | investigating heterogeneity in response to ddt with 2 strains of aedes aegypti, the author has compared ddt-resistance in the f(1) and f(2) progenies of single-pair matings of resistant with resistant (trinidad) and susceptible with susceptible (qs) strains.both strains showed heterogeneity; however, there was little overlap between the most tolerant qs progeny and the least resistant trin progeny. a substrain of very high resistance was isolated from a single trin progeny and one of very low to ... | 0 | 5304437 |
| mechanisms and inheritance of resistance and selection of resistance potential in aedes aegypti. | 0 | 5299454 | |
| factors affecting the oviposition of aedes aegypti. | 0 | 5299458 | |
| the need for standard and other strains of aedes aegypti for research. | 0 | 5299455 | |
| measures to be taken to prevent the transmission of aedes aegypti by sea and air. | 0 | 5299469 | |
| organization and administration of aedes aegypti control and eradication programmes. | 0 | 5299462 | |
| current status of the formal genetics of aedes aegypti. | 0 | 5299452 | |
| dynamics of aedes aegypti distribution and density. seasonal fluctuations in the americas. | 0 | 5299446 | |
| dynamics of aedes aegypti distribution, density and seasonal prevalence in the mediterranean area. | 0 | 5299448 | |
| aedes aegypti in the western pacific region. | 0 | 5299449 | |
| insecticides for use against aedes aegypti. | 0 | 5299464 | |
| the distribution, density and seasonal prevalence of aedes aegypti in west africa. | 0 | 5299447 | |
| aedes aegypti and yellow fever. | 0 | 5299444 | |
| mating, resting habits and dispersal of aedes aegypti. | 0 | 5299459 | |
| aedes aegypti and other mosquitos in relation to the dengue syndrome. | 0 | 4383543 | |
| [insecticide-resistance in aedes aegypti and allied species]. | 0 | 5299453 | |
| genetic control of aedes aegypti. | 0 | 5299738 | |
| frmal genetics and cytogenetics of aedes aegypti. | 0 | 5299451 | |
| the control of aedes aegypti in south-east asia and the western pacific. | 0 | 5299463 | |
| taxonomy of aedes aegypti and related species. | 0 | 4383544 | |
| possible use of the sterile-male technique for control of aedes aegypti. | 0 | 5299467 | |
| cytogenetics of aedes aegypti. | 0 | 5299736 |