Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| efficacy studies of vectobac 12as and teknar hp-d larvicides against 3rd-instar ochlerotatus taeniorhynchus and culex quinquefasciatus in small plot field studies. | efficacy studies were conducted with vectobac 12as and teknar hp-d larvicides against 3rd-instar ochlerotatus taeniorhynchus and culex quinquefasciatus in small field test plots. the products were obtained off the shelf from distributors and had different lot numbers. they were evaluated over a 2-year period in spring 2002 and 2003. application rates were 0.29, 0.58, and 1.10 liter/ha and evaluations were made 24 and 48 h after treatment. both products performed well in these studies, with vecto ... | 2004 | 15669386 |
| venezuelan equine encephalitis emergence: enhanced vector infection from a single amino acid substitution in the envelope glycoprotein. | in 1993 and 1996, subtype ie venezuelan equine encephalitis (vee) virus caused epizootics in the mexican states of chiapas and oaxaca. previously, only subtype iab and ic vee virus strains had been associated with major outbreaks of equine and human disease. the iab and ic epizootics are believed to emerge via adaptation of enzootic (sylvatic, equine-avirulent) strains for high titer equine viremia that results in efficient infection of mosquito vectors. however, experimental equine infections w ... | 2004 | 15277679 |
| experimental transmission of karshi and langat (tick-borne encephalitis virus complex) viruses by ornithodoros ticks (acari: argasidae). | selected species of mosquitoes and ornithodoros ticks were evaluated for their potential to transmit karshi and langat (tick-borne encephalitis virus complex) viruses in the laboratory. although there was no evidence of replication of karshi virus in either of the two mosquito species tested [ochlerotatus taeniorhynchus (wiedemann) or culex pipiens (l.)], karshi virus replicated in and was transmitted by all three species of ornithodoros ticks tested (ornithodoros parkeri cooley, ornithodoros so ... | 2004 | 15535630 |
| entomopathogenic fungi for mosquito control: a review. | fungal diseases in insects are common and widespread and can decimate their populations in spectacular epizootics. virtually all insect orders are susceptible to fungal diseases, including dipterans. fungal pathogens such as lagenidium, coelomomyces and culicinomyces are known to affect mosquito populations, and have been studied extensively. there are, however, many other fungi that infect and kill mosquitoes at the larval and/or adult stage. the discovery, in 1977, of the selective mosquito-pa ... | 2004 | 15861235 |
| a comparison of two spray nozzle systems used to aerially apply the ultra-low-volume adulticide fenthion. | field experiments with the mosquito adulticide fenthion (baytex) compared the conventional flat-fan nozzle system (tee jet 8002ss) and a new high-pressure hollow-cone nozzle system (1/8 miss). ground deposition and aerial flux of the mosquito adulticide fenthion were measured up to 4.83 km downwind by using filter paper and yarn collectors, respectively. biological efficacy was investigated by using caged salt-marsh mosquitoes (ochlerotatus taeniorhynchus), and caged fiddler crabs (uca pugilator ... | 2004 | 15088702 |
| factors affecting immatures of ochlerotatus taeniorhynchus (diptera: culicidae) in san diego county, california. | the effects of tide, temperature, rainfall, and salinity on the occurrence and abundance of immatures (instars and pupae) of the black salt marsh mosquito, ochlerotatus taeniorhynchus (wiedemann), were examined at a tidal pond in the tijuana estuary during 1996-1998. immatures were found between may and early september. tide had the greatest influence on immatures of this mosquito. eggs eclosed when tides averaged 1.96 +/- 0.10 (sd) m (1.83-2.19) 1-3 d before a flood tide. eclosion averaged once ... | 2003 | 14680101 |
| glycosaminoglycan binding properties of natural venezuelan equine encephalitis virus isolates. | equine-virulent, epidemic/epizootic strains of venezuelan equine encephalitis (vee) virus (veev) arise via mutation of progenitor enzootic strains that replicate poorly in equines. sequencing studies have implicated positively charged amino acids on the surface of the e2 envelope glycoprotein in the acquisition of equine virulence and viremia potential, suggesting that changes in binding to cell surface glycosaminoglycans (gags) may mediate vee emergence. therefore, we evaluated the binding of n ... | 2003 | 12502837 |
| isolation of eee virus from ochlerotatus taeniorhynchus and culiseta melanura in coastal south carolina. | a 1-year arbovirus study was conducted at the wedge plantation located in coastal south carolina to determine the occurrence and level of arbovirus activity in mosquito species inhabiting the site. mosquito species composition and temporal abundance were also determined. a total of 45,051 mosquitoes representing 27 species in 9 genera was collected and identified during 130 trap-nights between august, 1997, and july, 1998. the most abundant species was culex salinarius (n = 20,954) followed by o ... | 2003 | 12674532 |
| infection of malaria (anopheles gambiae s.s.) and filariasis (culex quinquefasciatus) vectors with the entomopathogenic fungus metarhizium anisopliae. | current intra-domiciliary vector control depends on the application of residual insecticides and/or repellents. although biological control agents have been developed against aquatic mosquito stages, none are available for adults. following successful use of an entomopathogenic fungus against tsetse flies (diptera: glossinidae) we investigated the potency of this fungus as a biological control agent for adult malaria and filariasis vector mosquitoes. | 2003 | 14565851 |
| vector competence of rural and urban strains of aedes (stegomyia) albopictus (diptera: culicidae) from são paulo state, brazil for ic, id, and if subtypes of venezuelan equine encephalitis virus. | aedes albopictus (skuse) is an asiatic mosquito species that has spread and colonized all continents except antarctica. it has major public health importance because it is a potential vector of several pathogens. the objectives of our study were to analyze the vector competence of urban and rural strains of ae. albopictus from são paulo state (brazil) for venezuelan equine encephalitis virus (vee) subtypes ic, id, and if, and to evaluate the effect of infection with subtype ic of vee on mosquito ... | 2003 | 14680121 |
| mosquitoes infected with west nile virus in the florida keys, monroe county, florida, usa. | more than 30,000 mosquitoes in 22 species or species groups were collected from the florida keys, monroe county, fl, usa, in dry ice-baited light and gravid traps. dry ice-baited traps collected more mosquitoes than did gravid traps. west nile virus was detected in pools of anopheles atropos dyar & knab, deinocerites cancer theobald, and ochlerotatus taeniorhynchus (wiedemann). | 2003 | 12943117 |
| vector competence of mexican and honduran mosquitoes (diptera: culicidae) for enzootic (ie) and epizootic (ic) strains of venezuelan equine encephalomyelitis virus. | experimental studies evaluated the vector competence of ochlerotatus taeniorhynchus (wiedemann), culex cancer theobald, culex pseudes (dyar and knab), culex taeniopus dyar and knab, and a culex (culex) species, probably culex quinquefasciatus say, and culex nigripalpus theobald from chiapas, mexico, and tocoa, honduras, for epizootic (ic) and enzootic (ie) strains of venezuelan equine encephalomyelitis (vee) virus. culex pseudes was highly susceptible to infection with both the ic and ie strains ... | 2003 | 12943109 |
| vector infection determinants of venezuelan equine encephalitis virus reside within the e2 envelope glycoprotein. | epizootic subtype iab and ic venezuelan equine encephalitis viruses (veev) readily infect the epizootic mosquito vector aedes taeniorhynchus. the inability of enzootic subtype ie viruses to infect this mosquito species provides a model system for the identification of natural viral determinants of vector infectivity. to map mosquito infection determinants, reciprocal chimeric viruses generated from epizootic subtype iab and enzootic ie veev were tested for mosquito infectivity. chimeras containi ... | 2002 | 12021373 |
| repellency of ir3535, kbr3023, para-menthane-3,8-diol, and deet to black salt marsh mosquitoes (diptera: culicidae) in the everglades national park. | ir3535, kbr3023, para-menthane-3,8-diol (pmd), and deet were evaluated in controlled studies with human subjects (n = 5) for repellency to black salt marsh mosquitoes (ochlerotatus taeniorhynchus wiedemann), in the everglades national park, fl. in tests of 6-h duration, with an average mosquito biting pressure on exposed forearm skin of 19.5 (+/- 13.7) bites per minute, the mean percent repellencies (se) for ir3535, kbr3023, pdm, and deet was 88.6 (3.2), 97.5 (1.7), 89.2 (2.9), and 94.8 (2.5), r ... | 2002 | 12495189 |
| positively charged amino acid substitutions in the e2 envelope glycoprotein are associated with the emergence of venezuelan equine encephalitis virus. | epidemic-epizootic venezuelan equine encephalitis (vee) viruses (veev) have emerged repeatedly via convergent evolution from enzootic predecessors. however, previous sequence analyses have failed to identify common sets of nucleotide or amino acid substitutions associated with all emergence events. during 1993 and 1996, veev subtype ie epizootics occurred on the pacific coast of the states of chiapas and oaxaca in southern mexico. like other epizootic veev strains, when inoculated into guinea pi ... | 2002 | 11799167 |
| effectiveness and residual activity comparison of granular formulations of insect growth regulators pyriproxyfen and s-methoprene against florida mosquitoes in laboratory and outdoor conditions. | effectiveness and residual activity tests of granular formulations of 2 insect growth regulators (igrs), s-methoprene and pyriproxyfen, against laboratory-reared larvae of 5 colonized mosquitoes, aedes aegypti, aedes albopictus, aedes taeniorhynchus, anopheles quadrimaculatus, and culex nigripalpus, were conducted in the laboratory and outdoors in plastic tubs. culex quinquefasciatus was exposed to these two igrs in the laboratory only. each igr formulation was applied at 0.02 and 0.05 ppm activ ... | 2002 | 12322941 |
| mosquito vector control and biology in latin america--a twelfth symposium. denver, colorado, february 2002. summaries. | the 12th annual latin american symposium presented by the american mosquito control association (amca) was held as part of the 68th annual meeting in denver, co, in february 2002. the principal objective, as for the previous 11 symposia, was to promote participation in the amca by vector control specialists, public health workers, and academicians from latin america. this publication includes summaries of 35 presentations that were given orally in spanish or presented as posters by participants ... | 2002 | 12322934 |
| evaluation of various models of propane-powered mosquito traps. | large cage and field studies were conducted to determine the efficacy of various models of propane-powered mosquito traps. these traps utilized counterflow technology in conjunction with catalytic combustion to produce attractants (carbon dioxide, water vapor, and heat) and a thermoelectric generator that converted excess heat into electricity for stand-alone operation. the cage studies showed that large numbers of aedes aegypti and ochlerotatus taeniorhynchus were captured and that each progres ... | 2002 | 12125861 |
| laboratory bioassay studies to determine methoprene susceptibility in a natural population of ochlerotatus taeniorhynchus from the florida keys. | larvae of florida keys ochlerotatus taeniorhynchus collected from no name key were colonized and evaluated against technical s-methoprene in laboratory beaker tests. glassware was treated with a silanizing reagent before testing to prevent methoprene attachment to the glassware. the no name key strain was compared with a susceptible laboratory strain of oc. taeniorhynchus. five serial dilutions (0.0100, 0.0050, 0.0010, 0.0005, and 0.0001 microg/ml) and an untreated control were evaluated. tests ... | 2002 | 12083352 |
| survey of container-breeding mosquitoes from the florida keys, monroe county, florida. | a survey of container-breeding mosquitoes was conducted on urban islands (big coppitt key, rockland key, key west, and stock island) and rural islands (big pine key, cudjoe key, little torch key, no name key, ramrod key, saddlebunch keys, sugarloaf key, and summerland key) within the florida keys. five mosquito species were collected: aedes aegypti, culex nigripalpus, cx. quinquefasciatus, cx. salinarius, and ochlerotatus taeniorhynchus. plastic buckets, trash cans, and discarded plastic contain ... | 2001 | 11804461 |
| in vivo and in vitro development of the protist helicosporidium sp. | we describe the discovery and developmental features of a helicosporidium sp. isolated from the black fly simulium jonesi. morphologically, the helicosporidia are characterized by a distinct cyst stage that encloses three ovoid cells and a single elongate filamentous cell. bioassays have demonstrated that the cysts of this isolate infect various insect species, including the lepidopterans, helicoverpa zea, galleria mellonella, and manduca sexta, and the dipterans, musca domestica, aedes taeniorh ... | 2001 | 11456323 |
| vector competence of north american mosquitoes (diptera: culicidae) for west nile virus. | we evaluated the potential for several north american mosquito species to transmit the newly introduced west nile (wn) virus. mosquitoes collected in the new york city metropolitan area during the recent wn virus outbreak, at the assateague island wildlife refuge, va, or from established colonies were allowed to feed on chickens infected with wn virus isolated from a crow that died during the 1999 outbreak. these mosquitoes were tested approximately 2 wk later to determine infection, disseminati ... | 2001 | 11296813 |
| density and distribution of dirofilaria immitis (nematoda: filarioidea) third-stage larvae in aedes sollicitans and aedes taeniorhynchus (diptera: culicidae). | numbers and the distribution of third-stage larvae (l3) were investigated in aedes sollicitans (walker) and aedes taeniorhynchus (wiedemann) female mosquitoes fed dirofilaria immitis (leidy) infectious-blood with densities of microfilariae (mf) ranging from approximately 7,100-43,400 mf/ml. at each microfilarial density, a maximum of 63-66 infective larvae were recovered from an ae. sollicitans alive on day 15 after infection. in comparison with ae. taeniorhynchus, ae. sollicitans averaged great ... | 2000 | 11004780 |
| vector competence of two species of mosquitoes (diptera: culicidae) from southern california for dirofilaria immitis (filariidea: onchocercidae). | two species of mosquitoes reared to adults from field-collected larvae or egg rafts in or near los angeles county, ca, were exposed to dogs with known levels of dirofilaria immitis (leidy) microfilariae per 20 cubic millimeters of blood. aedes taeniorhynchus (wiedemann) readily blood fed on an infected dog ingested microfilariae but did not become infected. culiseta incidens (thomson) also fed on an infected dog became infected, and 10% of the microfilariae developed to the l3 stage. cs. inciden ... | 2000 | 10730504 |
| phylogenetic relationships among eighteen neotropical culicini species. | the subgeneric relationships among 8 generic and infrageneric taxa of the culicini tribe were examined by cladistic analysis based on 30 larval mouthpart characters (maxillae and mandibles) of 7 subgenera of culex l. and 1 of deinocerites theobald. we analyzed 18 ingroup species as well as deinocerites melanophylum dyar and knab as a sister group, and aedes taeniorhynchus wiedemann as an outgroup. a parsimony analysis using the nona program resulted in 2 trees each of 109 steps (consistency and ... | 2000 | 10901630 |
| aircraft-mediated mosquito transport: new direct evidence. | a case is reported of a capture of an aedes taeniorhynchus female mosquito in an aircraft cabin as it attempted to bloodfeed on one of the authors during a transoceanic flight from the usa to the iberian peninsula. | 2000 | 11198921 |
| colonization of culex nigripalpus theobald (diptera: culicidae) by stimulation of mating using males of other mosquito species. | culex nigripalpus theobald (diptera: culicidae) was recolonized successfully by cohabiting aedes taeniorhynchus males or males of other mosquito species starting in a large outdoor cage under natural light-dark cycles and temperatures and ending in a 1-ft.3 cage under artificial light-dark cycles at 24 degrees c without added stimulation. | 1999 | 10342273 |
| efficacy of dibrom, trumpet, and scourge against four mosquito species in louisiana. | adult mortality of anopheles quadrimaculatus, culex quinquefasciatus, and the aedes spp. complex (aedes sollicitans and aedes taeniorhynchus) was observed after aerial ultra-low volume (ulv) exposure to dibrom, trumpet, and scourge. dibrom was applied at 112 g active ingredient (ai)/ha, trumpet at 112 g ai/ha, and scourge at 1.96 g ai/ha. at all time intervals, dibrom and trumpet were significantly more effective against the aedes spp. complex than against an. quadrimaculatus and cx. quinquefasc ... | 1999 | 10612604 |
| comparison of two american biophysics mosquito traps: the professional and a new counterflow geometry trap. | large cage and field studies were conducted to compare the efficacy of 2 american biophysics corporation mosquito traps, the standard professional (pro) trap and a new counterflow geometry (cfg) trap. the pro trap utilizes conventional downdraft technology and the cfg trap uses a patent-pending technology. in large cage studies, similarly baited cfg traps captured approximately 1.7 times as many laboratory-reared aedes taeniorhynchus as the pro trap. the cfg trap baited with co2 + octenol result ... | 1999 | 10480115 |
| interactive effects of 1-octen-3-ol and carbon dioxide on mosquito (diptera: culicidae) surveillance and control. | responses of natural populations of biting diptera were studied at everglades national park, fla., to three levels (0, 3.0, and 41.1 mg/h) of 1-octen-3-ol (octenol), four levels (0, 20, 200, and 2,000 ml/min) of carbon dioxide (co2), and their combinations. catches of mosquitoes (aedes taeniorhynchus (wiedemann), culex [melanoconion]) spp., cx. nigripalpus theobald, and wyeomyia spp.) and one tabanid (diachlorus ferrugatus (f.)) were affected significantly by co2 and octenol. significantly great ... | 1999 | 1905355 |
| responses of male and female mosquitoes to repellents in the world health organization insecticide irritability test system. | a study was conducted to compare responses of male and female aedes aegypti (linn.) and aedes taeniorhynchus (wiedemann) to 9 olfactory repellents in the world health organization insecticide irritability test system. an irritant insecticide (permethrin) and a control were included for comparison. aedes aegypti exhibited significantly more takeoffs than ae. taeniorhynchus, and female mosquitoes exhibited significantly more takeoffs than males. permethrin induced significantly more takeoffs than ... | 1999 | 10342270 |
| production of chymotrypsin-resistant bacillus thuringiensis cry2aa1 delta-endotoxin by protein engineering. | cleavage of the cry2aa1 protoxin (molecular mass, 63 kda) from bacillus thuringiensis by midgut juice of gypsy moth (lymantria dispar) larvae resulted in two major protein fragments: a 58-kda fragment which was highly toxic to the insect and a 49-kda fragment which was not toxic. in the midgut juice, the protoxin was processed into a 58-kda toxin within 1 min, but after digestion for 1 h, the 58-kda fragment was further cleaved within domain i, resulting in the protease-resistant 49-kda fragment ... | 1999 | 10508095 |
| laboratory evaluation of biotic and abiotic factors that may influence larvicidal activity of bacillus thuringiensis serovar. israelensis against two florida mosquito species. | a technical powder of bacillus thuringiensis serovar. israelensis (b.t.i.) (vectobac tp, 5,000 international toxic units [itu]/mg), an aqueous suspension (vectobac 12as, 1,200 itu/mg), and a granular formulation (vectobac cg, 200 itu/mg) were tested in the laboratory under different biotic and abiotic, conditions for efficacy against larvae of saltwater (aedes taeniorhynchus) and freshwater (culex nigripalpus) mosquitoes. second-, 3rd-, and 4th-instar larvae of cx. nigripalpus were 1.3-3-fold mo ... | 1999 | 10342266 |
| genetic reassortment of rift valley fever virus in nature. | rift valley fever virus (rvfv), a phlebovirus of the bunyaviridae family, is an arthropod-borne virus which emerges periodically throughout africa, emphasizing that it poses a major threat for animal and human populations. to assess the genetic variability of rvfv, several isolates from diverse localities of africa were investigated by means of reverse transcription-pcr followed by direct sequencing of a region of the small (s), medium (m), and large (l) genomic segments. phylogenetic analysis s ... | 1999 | 10482570 |
| limited potential for mosquito transmission of genetically engineered, live-attenuated venezuelan equine encephalitis virus vaccine candidates. | in an attempt to improve the current live-attenuated vaccine (tc-83) for venezuelan equine encephalitis (vee), specific mutations associated with attenuation of vee virus in rodent models were identified. these mutations were inserted into full-length cdna clones of the trinidad donkey strain of vee virus by site-directed mutagenesis, and isogenic virus strains with these mutations were recovered after transfection of baby hamster kidney cells with infectious rna. we evaluated 10 of these strain ... | 1999 | 10403340 |
| vector competence of three venezuelan mosquitoes (diptera: culicidae) for an epizootic ic strain of venezuelan equine encephalitis virus. | experimental studies were undertaken to evaluate the vector competence of selected mosquito species [aedes taeniorhynchus (wiedemann), culex declarator dyar and knab, and mansonia titillans (walker)] from northwestern venezuela for the epizootic (ic) strain of venezuelan equine encephalitis (vee) virus that was responsible for the 1995 outbreak of vee in this area. ae. taeniorhynchus was highly susceptible to infection (94% of 35), and 89% had a disseminated infection. virus-exposed ae. taeniorh ... | 1999 | 10467764 |
| brugia malayi microfilariae (nematoda: filaridae) enhance the infectivity of venezuelan equine encephalitis virus to aedes mosquitoes (diptera: culicidae). | we examined the potentially conflicting effects that microfilarial (mf) enhancement of viral infectivity and mf-induced mortality in mosquitoes have on the vectorial capacity of aedes aegypti (l.), aedes triseriatus (say), and aedes taeniorhynchus (wiedemann) for venezuelan equine encephalitis virus (vee) when mosquitoes feed on gerbils co-infected with brugia malayi (buckley). groups of mosquitoes were fed on gerbils that were either dually infected (vee plus b. malayi mf) or singly infected (v ... | 1999 | 10593077 |
| field efficacy and nontarget effects of the mosquito larvicides temephos, methoprene, and bacillus thuringiensis var. israelensis in florida mangrove swamps. | we compared the efficacy and nontarget effects of temephos, bacillus thuringiensis var. israelensis (b.t.i.), and methoprene applied by helicopter to control mosquito larvae in mangrove swamps on sanibel island, fl, in may 1997. three sites per treatment and 3 untreated sites were used. temephos (abate) was applied at 37 ml/ha (43% active ingredient [ai]), b.t.i. granules (vectobac g) were applied at 5.606 kg/ha (200 international toxic units/mg), and methoprene (altosid all) was applied at 213 ... | 1999 | 10612606 |
| effect of salt concentration in larval rearing water on susceptibility of aedes mosquitoes (diptera: culicidae) to eastern equine and venezuelan equine encephalitis viruses. | the effect of salt concentration in larval rearing water on the susceptibility of adult aedes taeniorhynchus (wiedemann) and aedes sollicitans (skuse) to infection with eastern equine encephalomyelitis (eee) virus was tested in the laboratory. ae. sollicitans was more susceptible to infection (79%, n = 82) and viral dissemination (16%) with eee virus than was ae. taeniorhynchus (42%, n = 184) and (5%), respectively, when fed on a chick with a viremia of 10(7) +/- 0.1 plaque-forming units/ml; how ... | 1998 | 9775590 |
| mosquito frequency and feeding habits in an enzootic canine dirofilariasis area in niterói, state of rio de janeiro, brazil. | heartworm, a chronic fatal mosquito-borne canine disease, is frequently diagnosed in dogs from the state of rio de janeiro, where its prevalence is 29.7% in the city of niterói. nevertheless it is rarely detected in cats (0.8%) from the same state. dogs are the primary source of infection to mosquitoes. because cats either do not demonstrate microfilaremia or it is too low and transient for transmission. a mosquito survey was conducted in itacoatiara, niterói, from march 1995 to february 1996, u ... | 1998 | 9698883 |
| bva 2 mosquito larvicide--a new surface oil larvicide for mosquito control. | bva 2 mosquito larvicide was evaluated in laboratory pan tests against 3rd-instar aedes taeniorhynchus (wied.), culex quinquefasciatus say, and culex nigripalpus theobald larvae. bva 2 was as effective as the standard, gb-1111, at 14 liters/ha (> 99.1% vs. 99.8%). in small field plot tests bva 2 mosquito larvicide applied at 28 liters/ha was as effective as gb-1111 (99.0% vs. 99.8%) 24 h posttreatment. operationally, applied by helicopter at 46.8 liters/ha, bva 2 mosquito larvicide was more effe ... | 1998 | 9673922 |
| mosquito (aedes taeniorhynchus) resistance to methoprene in an isolated habitat. | salt-marsh mosquitoes (aedes taeniorhynchus), collected on 2 barrier islands in lee county, florida, that had been treated from 1989 to 1994 with 150-day methoprene briquets, were bioassayed with technical s-methoprene in the laboratory. susceptibility of the indigenous captiva strain (median lethal concentration [lc50] estimate, 6.71 ppb) collected from captiva island was 14.9-fold lower than the naive flamingo strain (lc50 estimate, 0.45 ppb) from everglades national park. the lover's key stra ... | 1998 | 9673923 |
| osmotic effects as a factor modifying insecticide toxicity on aedes and artemia. | euryhaline species are more tolerant of various insecticides under isosmotic conditions. two euryhaline species, aedes taeniorhynchus (wiedemann) and artemia sp., were exposed to four insecticides (aldicarb, dimethoate, imidacloprid, tebufenozide), under isosmotic and hyperosmotic conditions. mortality under these two osmotic conditions was observed and compared to evaluate salinity as a contributing factor to insecticide toxicity. artemia was more tolerant of all chemicals tested than a. taenio ... | 1998 | 9756708 |
| failure to predict abundance of saltmarsh mosquitoes aedes sollicitans and a. taeniorhynchus (diptera: culicidae) by using variables of tide and weather. | weather and tide variables were used to develop regression models with light trap counts of aedes sollicitans (walker) and aedes taeniorhynchus (wiedemann) from 1984 to 1995. rains, tides, and temperatures, both during and preceding the sample period, all showed significant correlations with trap counts. these multiple regression models forecasted general population levels during 1996 and 1997, but not the size of the peaks. therefore, weather alone can predict general trends but cannot be used ... | 1998 | 9615534 |
| evaluation of attractant-baited traps/targets for mosquito management on key island, florida, usa. | a three-year research project was conducted on key island, collier county, florida, usa, to evaluate an innovative attractant-based mosquito management technique. in the first year, species composition, relative abundance, and spatial distribution were determined. although 16 species were collected, the dominant species was the black salt march mosquito, aedes taeniorhynchus, which was the primary pest species. efficacy of a single line barrier, consisting of 52 carbon dioxide (200 cc/min) + oct ... | 1998 | 9879073 |
| epidemic venezuelan equine encephalitis in la guajira, colombia, 1995. | in 1995, the first venezuelan equine encephalitis (vee) outbreak in colombia in 22 years caused an estimated 75,000 human cases, 3000 with neurologic complications and 300 fatal, in la guajira state. of the state's estimated 50,000 equines, 8% may have died. an epizootic ic virus, probably introduced from venezuela, was rapidly amplified among unvaccinated equines. record high rainfall, producing high densities of vector aedes taeniorhynchus, led to extensive epidemic transmission (30% attack ra ... | 1997 | 9086137 |
| hemagglutinins in mosquitoes and their role in the immune response to brugia malayi (filarioidea:nematoda) larvae. | hemagglutinins were determined in six species of mosquitoes that are susceptible and refractory to brugia malayi (filarioidea: nematoda). high titers of hemagglutinins were found in the salivary gland extract and in the body fluid of a completely refractory species, aedes taeniorhynchus, and in partially refractory species, anopheles quadrimculatus but low levels of hemagglutinins were also present in the body fluid of aedes aegypti (black-eye, liverpool strain), a susceptible species. hemagglut ... | 1997 | 9505436 |
| short report: lack of virus replication in arthropods after intrathoracic inoculation of ebola reston virus. | to evaluate the potential for arthropods to serve as reservoir hosts of ebola virus, three mosquito species, aedes albopictus, aedes taeniorhynchus, and culex pipiens, and a soft tick, ornithodoros sonrai, were inoculated with 1o2.5 plaque-forming units of ebola reston virus. after incubation at 22 degrees c for 11 days, at least six specimens of each species were triturated and examined for evidence of viral replication by enzyme-linked immunosorbent assay and plaque assay. there was no evidenc ... | 1996 | 8702028 |
| release of romanomermis iyengari (nematoda:mermithidae) to control aedes taeniorhynchus (diptera:culicidae) in punta del este, isla de la juventud, cuba. | preparasites of romanomermis iyengari welch were applied at the rate of 1,000 preparasites per square meter of surface area in 5 natural breeding sites in carbonate rock depressions to control aedes taeniorhynchus wiedeman larvae. larval parasitism averaged 100, 97, 81, and 80% in 1-4 instars, respectively. three of 5 sites produced parasitism in excess of 90%. the range of salinity and water depth had little influence on the levels of parasitism. ae. taeniorhynchus density was reduced from 78 t ... | 1996 | 8699466 |
| influence of ground ulv droplet spectra on adulticide efficacy for aedes taeniorhynchus. | a series of 76 field trials in a vegetated habitat with caged adult aedes taeniorhyncus mosquitoes determined that ground ultra-low volume treatment efficiency was significantly influenced by droplet size. small droplets (7-microns volume median diameter [vmd]) produced the lowest mosquito mortality at all test distances (100-500 ft.). a vmd of 26 microns was effective at 100-300 ft., but was not effectual at 400-500 ft. droplets in the 15-microns range were the most effective overall, at the di ... | 1996 | 8827622 |
| construction of a field trap for initiating an ovipositional response in aedes taeniorhynchus. | an oviposition trap was constructed for the black saltmarsh mosquito, aedes taeniorhynchus. the trap consisted of a 50 x 60-cm piece of contaminated 100% cotton bath towel, saturated with 85% tap water, a container, and a cover of dried plant parts placed over the contaminated toweling. this combination initiated oviposition. contamination of the toweling was due to populations of bacteria and fungi. the eggs recovered were free from soil and debris. | 1996 | 8887231 |
| electrophysiological responses of receptor neurons in mosquito maxillary palp sensilla to carbon dioxide. | sensilla basiconica on the maxillary palps of female aedes aegypti contain a receptor neuron which produces a phasic-tonic pattern of action potential response to low concentrations (150-300 ppm) of carbon dioxide (co2), a stimulus known to be involved with host seeking behavior. these receptor neurons respond reliably to small increments in co2 concentration (e.g., 50 ppm). we were particularly interested in evaluating the possibility that the sensitivity to step increases in co2 concentration ... | 1995 | 7674195 |
| field evaluation of heat as an added attractant to traps baited with carbon dioxide and octenol for aedes taeniorhynchus. | collection size of 3 species of mosquitoes (aedes taeniorhynchus, anopheles atropos, and culex nigripalpus) and a species of biting midge (culicoides furens) in cdc-type traps baited with carbon dioxide and octenol were significantly increased with the addition of heat. the presence of heat also significantly reduced collection size of the tabanid diachlorus ferrugatus. | 1995 | 8825507 |
| update: venezuelan equine encephalitis--colombia, 1995. | during september 1-october 12, 1995, a total of 12,403 patient visits for venezuelan equine encephalitis (vee) were reported from la guajira state, colombia. the actual number of incident cases, estimated from epidemiologic surveys, may exceed 45,000. this report updates the ongoing investigation of this outbreak (1). | 1995 | 7565561 |
| a larval mosquito survey in northeastern arkansas including a new record for aedes albopictus. | an extensive larval mosquito survey was conducted in craighead county in northeastern arkansas in 1990-91. nineteen species representing 8 genera were collected. culex restuans was the most cosmopolitan species in relation to habitat utilization, being collected in 5 or 7 habitat types sampled. a major range extension of aedes taeniorhynchus in arkansas was documented as well as the first known collection of aedes albopictus in the northeastern part of the state. | 1994 | 8965075 |
| malathion resistance in mosquitoes from charleston and georgetown counties of coastal south carolina. | susceptibility tests were conducted using the world health organization diagnostic test procedure on strains of aedes taeniorhynchus, aedes sollicitans, aedes vexans, and culex nigripalpus collected from several localities in charleston and georgetown counties of south carolina. aedes taeniorhynchus was resistant to malathion (mortality 1.0-54.4%) but not to propoxur, permethrin, or fenitrothion. there also were indications that ae. sollicitans and cx. nigripalpus were resistant to malathion, bu ... | 1994 | 7912262 |
| experimental transmission of eastern equine encephalitis virus by strains of aedes albopictus and a. taeniorhynchus (diptera: culicidae). | the vector competence of aedes taeniorhynchus (wiedemann) and four strains of aedes albopictus (skuse) was assessed for eastern equine encephalitis (eee) virus isolated from ae. albopictus collected in polk county, florida. both species became infected with and transmitted eee virus by bite after feeding on 1-d-old chicks that had been inoculated with eee virus (viremia = 10(10.1) plaque-forming units [pfu] per ml of blood). however, when fed on an older chick with a lower viremia (viremia = 10( ... | 1994 | 8189419 |
| evaluation of granular corncob formulations of bacillus thuringiensis serovar israelensis against mosquito larvae using a semi-field bioassay method. | a semi-field bioassay method using commonly available laundry tubs evaluated efficacy and residual activity of 6 granular corncob formulations of bacillus thuringiensis serovar israelensis against laboratory-reared late 3rd- and early 4th-instar larvae of aedes taeniorhynchus introduced to the tubs. these formulations produced appreciable larval mortalities (up to 75%) for 9 days posttreatment, with indications of having more prolonged activity. the consistent posttreatment larval mortality tren ... | 1994 | 7707052 |
| seasonality, prevalence and pathogenicity of the gregarine ascogregarina taiwanensis (apicomplexa: lecudinidae) in mosquitoes from florida. | aedes albopictus larvae collected in gainesville, fl, were infected with the gregarine ascogregarina taiwanensis. natural prevalence varied from 68 to 100%. eight mosquito species were tested in the laboratory for susceptibility to a. taiwanensis isolated from field-collected ae. albopictus. aedes aegypti, aedes albopictus, and aedes taeniorhynchus became 100% infected in the larval stage, whereas aedes triseriatus was less susceptible; culex quinquefasciatus, culex nigripalpus, culex territans, ... | 1994 | 7807086 |
| effects of host resistance and injury on the susceptibility of aedes taeniorhynchus to mosquito iridescent virus. | an iridescent virus is found at low prevalence in population of aedes taenirhynchus. attempts at experimental transmission produced low levels of infection, regardless of the dosage applied. in a test for genetic resistance in colonized ae. taeniorhynchus, the mean infection rates +/- sd for groups of randomly selected and sibling larvae were compared. the standard deviation of the sibling groups was not higher than the random groups (4.0 +/- 3.1% and 3.0 +/- 2.1%), rendering genetic resistance ... | 1994 | 8014628 |
| do fish repel oviposition by aedes taeniorhynchus? | we tested the hypothesis that fish indirectly control mosquitoes by repelling oviposition. aedes taeniorhynchus oviposition in mangrove forests, natural pools, and excavated pools with different concentrations of fish was compared. oviposition in adjacent mangrove forests was concentrated in the site with the lowest fish density. in 3 mangrove forests, egg populations from pool banks were significantly (p < 0.001) lower for pools with fish than for fishless pools, with an overall mean +/- sd of ... | 1994 | 7807080 |
| acoustical detection of aedes taeniorhynchus swarms and emergence exoduses in remote salt marshes. | swarms and emergency exoduses of aedes taeniorhynchus mosquitoes produce sounds detectable from 10 to 50 m in a quiet environment. background noise levels as low as 21 db (decibels referenced to 20 micropa) are present at dusk between frequencies of 0.3 and 3.4 khz. a mosquito swarm with a sound pressure level of 25-35 db is detectable over tens of meters in the marsh, if not in the 40-60-db background noise of a typical urban environment. individually caged ae. taeniorhynchus also are detectabl ... | 1994 | 8965083 |
| application of radar rainfall estimates for surveillance of aedes taeniorhynchus larvae. | a preliminary investigation of land-based radar rainfall estimates for surveillance of aedes taeniorhynchus larvae was conducted from january 1 to may 21, 1991 in collier county, fl. rainfall estimates from the national weather service radap ii radar system, supplemented with tide gauge data, served as criteria for larval inspection. rain, rain+tide and tide, respectively, triggered 48, 26 and 26% of the 14 proposed inspection trips. this system detected 7/8 larval broods found by collier mosqui ... | 1993 | 8350081 |
| small plot evaluation of a sustained-release sand granule formulation of methoprene (san 810 i 1.3 gr) for control of aedes taeniorhynchus. | a sand granule formulation of methoprene (san 810 i 1.3 gr) was tested in outdoor intermittently flooded pools as a pre- and postflood treatment for the control of aedes taeniorhynchus. in field test 1, pre- and postflood treatments were equally effective. inhibition of emergence in mosquitoes exceeded 90% for one and 3 flood/dry cycles when san 810 i 1.3 gr was applied at rates of 2.8 and 5.6 kg/ha, respectively. in field test 2, > 90% inhibition of emergence was achieved only when san 810 i 1. ... | 1993 | 8350071 |
| variation of mosquito (diptera: culicidae) relative abundance and dirofilaria immitis (nematoda: filarioidea) vector potential in coastal north carolina. | at an enzootic focus of dirofilaria immitis in coastal north carolina, mosquito populations were sampled june-september 1985 and on several occasions during august-october 1986 and june-august 1987, to identify local vectors and to determine relative abundance and d. immitis infection rates. predominant species collected were anopheles bradleyi king (66.6%), culex salinarius coquillett (15.9%), aedes taeniorhynchus (wiedemann) (8.2%), and aedes sollicitans (walker) (4.9%). population abundance v ... | 1993 | 8096249 |
| effect of environmental temperature on the vector competence of aedes taeniorhynchus for rift valley fever and venezuelan equine encephalitis viruses. | studies were conducted to determine the effect of environmental temperature on the susceptibility of aedes taeniorhynchus mosquitoes for venezuelan equine encephalitis (vee) and rift valley fever (rvf) viruses. mosquitoes reared at low temperature (19 degrees c) were significantly more susceptible to infection with rvf virus (infection rate = 70%, 158 of 226) than were those mosquitoes reared at 26 degrees c (infection rate = 48%, 135 of 280), regardless of the temperature at which mosquitoes we ... | 1993 | 8279634 |
| transmission of venezuelan equine encephalomyelitis virus by aedes sollicitans and aedes taeniorhynchus (diptera: culicidae). | experimental studies compared the vector competence of aedes sollicitans (skuse) and ae. taeniorhynchus (wiedemann) collected on assateague island, va., for an epizootic strain (trinidad donkey) of venezuelan equine encephalomyelitis (vee) virus. infection rates were significantly higher in ae. sollicitans (101/107, 94%) than in ae. taeniorhynchus (103/175, 59%), even though both species fed concurrently on the same infected hamsters. similarly, dissemination and transmission rates were signific ... | 1992 | 1552530 |
| eggshells as an index of aedine mosquito production. 2: relationship of aedes taeniorhynchus eggshell density to larval production. | to test if eggshell density could be used as an index of aedine mosquito production, we compared eggshell density with the larval production of aedes taeniorhynchus in florida mangrove basin forests. quantitative (n = 7) and categorical (n = 34) estimates of annual larval production were regressed against the number of eggshells per cc of soil. significant regressions were obtained in both instances. larval production was concentrated in zones with the highest eggshell density. we suggest that e ... | 1992 | 1583487 |
| the killifish rivulus marmoratus: a potential biocontrol agent for aedes taeniorhynchus and brackish water culex. | in the laboratory, newly hatched fry of rivulus marmoratus were effective predators on 1st-instar aedes taeniorhynchus. adult fish consumed 4th-instar ae. taeniorhynchus and egg rafts of culex quinquefasciatus at a rate increasing with standard length of the fish. predation of rivulus marmoratus on ae. taeniorhynchus larvae in the field was documented by observing the passage of larval/pupal remains through the gut. laboratory reared fish released at known ae. taeniorhynchus breeding sites survi ... | 1992 | 1583495 |
| comparison of the synthetic pyrethroids esbiothrin and bioresmethrin with scourge and cythion against adult mosquitoes in a laboratory wind tunnel. | both candidate adulticides, esbiothrin and bioresmethrin, exhibited quick knockdown 1-h posttreatment. esbiothrin elicited the fastest knockdown, but bioresmethrin was more effective at both 1- and 24-h posttreatment than either esbiothrin or scourge against both aedes taeniorhynchus and culex quinquefasciatus. mosquitoes treated with scourge required more time and a higher dosage to respond in a physiological manner similar to those treated with either of the candidate adulticides. more than tw ... | 1992 | 1583490 |
| eggshells as an index of aedine mosquito production. 1: distribution, movement and sampling of aedes taeniorhynchus eggshells. | the distribution of aedes taeniorhynchus eggshells in florida mangrove basin forests was determined and used to design a sampling plan. eggshells were found in 10/11 sites (91%), with a mean +/- se density of 1.45 +/- 0.75/cc; density did not change significantly year to year. highest densities were located on the sloping banks of hummocks, ponds and potholes. eggshells were less clumped in distribution than eggs and larvae and thus required a smaller sample size for a given precision level. whi ... | 1992 | 1583486 |
| distribution and sampling of aedes taeniorhynchus (diptera: culicidae) eggs in a florida mangrove forest. | the distribution of aedes taeniorhynchus (wiedemann) eggs in a florida mangrove basin forest was quantified and used to design a sampling plan. eggs were found in detritus-rich soil with the highest densities in a band at elevations 0.1-0.2 m above the water line. dispersion indices (k and taylor's b) indicated that the eggs were aggregated; 14 of 16 populations tested fit the negative binomial distribution. a fixed-size sampling plan using systematic sampling was designed from these data. | 1991 | 2056510 |
| collection and separation of aedes taeniorhynchus eggshells from mangrove soil. | two methods to separate eggshells of aedes taeniorhynchus from mangrove soil were compared. selective sieving, using nested sieves with 0.185 and 0.170-mm screen openings, and water flotation both removed over 99% of the soil. however, water flotation recovered a significantly greater percentage of eggshells (62% vs. 34%). there was no significant difference in the recovery rate of viable eggs and new and old eggshells using water flotation. | 1991 | 2045802 |
| aedes taeniorhynchus (diptera: culicidae) oviposition patterns in a florida mangrove forest. | the association of aedes taeniorhynchus eggs and several variables was studied in a florida mangrove forest. eggs were limited to stands of red mangrove (rhizophora mangle l.) that were embedded within a black mangrove (avicennia germinans l.) forest. the occurrence of eggs was related significantly to elevation and the amount of detritus. field and laboratory studies indicated that grazing on black mangrove detritus by the snail melampus coffeus l. may have limited detritus accumulation and soi ... | 1991 | 1941908 |
| control of aedes taeniorhynchus and culex quinquefasciatus emergence with sustained release altosid sand granules and pellets in saltwater and freshwater test plots. | the efficacy of sustained release altosid sand granules to control adult aedes taeniorhynchus and culex quinquefasciatus emergence was investigated. sand granules applied at a 7-day preflood application rate of 5.6 kg/ha controlled 99% of the ae. taeniorhynchus emergence in saltwater plots for 44 days posttreatment and 35% of cx. quinquefasciatus in freshwater plots. a 5.6 kg/ha rate controlled 100% of the ae. taeniorhynchus emergence for 30 days posttreatment in semi-permanent saltwater plots. ... | 1991 | 1791449 |
| [the pilot project results of applications of the biolarvicide bacillus sphaericus 2362 on mosquito breeding grounds of the town of santa cruz del norte (la habana province)]. | the effectiveness of the bacillus sphaericus strain 2362 in liquid formulation, at a 10 ml/m2 dose, was tested in 157 breeding sites of culex quinquefasciatus mosquitos, 2 breeding sites of culex quinquefasciatus and anopheles albimanus and 1 breeding site of aedes taeniorhynchus, consisting of 1 river, 2 oxidation ponds, 1 pond, 4 dams, 2 microdams and 150 pits. the results reached with the application of 1800 1 of biolarvicide show its effectiveness. within 24 hours of treatment, mortality rat ... | 1991 | 1801088 |
| poor vector efficiency of culex quinquefasciatus following infection with dirofilaria immitis. | the vector efficiency of the haiti and covington strains of culex quinquefasciatus after feeding on dog blood infected with dirofilaria immitis (approximately 110 microfilariae (mf)/20 microliters of blood) was 1.2 and 0.3%, respectively, versus nearly 20% for the vero beach strain of aedes taeniorhynchus. at a much higher microfilaremia (approximately 400 mf/20 microliters), it was 1.6, 0.5 and 31.5%, respectively. the poor vector efficiency of the 2 cx. quinquefasciatus strains probably was du ... | 1991 | 2045806 |
| integrated use of planaria (dugesia dorotocephala) and bacillus thuringiensis var. israelensis against aedes taeniorhynchus: a laboratory bioassay. | the effectiveness of integrating bacillus thuringiensis var. israelensis (b.t.i.) and the predatory planaria, dugesia dorotocephala against aedes taeniorhynchus was determined under controlled laboratory conditions. there was no significant effect (p greater than 0.05) of b.t.i. on d. dorotocephala either by direct association or through ingestion of b.t.i. dosed larvae. planaria, alone, and b.t.i. combined with planaria, both provided significant (p less than 0.05) reduction of ae. taeniorhynch ... | 1990 | 2098475 |
| field studies on the potential of butanone, carbon dioxide, honey extract, 1-octen-3-ol, l-lactic acid and phenols as attractants for mosquitoes. | various combinations of six candidate attractants--butanone, carbon dioxide (co2), honey, octenol, lactic acid and mixed phenols--were tested against natural populations of mosquitoes in everglades national park, florida, u.s.a., using unlighted cdc-baited traps. with few exceptions, the attractancy of these candidate compounds to mosquitoes, when used alone, was less than that of co2 alone. the exceptions were that octenol and honey extract alone attracted larger numbers of coquillettidia pertu ... | 1990 | 1983456 |
| effects of controlled burning on aedes taeniorhynchus eggs in an abandoned rice impoundment in south carolina. | controlled burning reduced the number of viable eggs in an aedes population. the effectiveness of the burn was related to the amount of rainfall, surface moisture and dry vegetation. a greater reduction in viable eggs occurred when the burn was close to the ground. variable results were achieved if the surface was moist but there was a significant reduction in the number of viable eggs, due to a heavy amount of dry vegetation accompanied by low rainfall. | 1990 | 2230784 |
| nectar-feeding habits of aedes taeniorhynchus. | aedes taeniorhynchus were collected on the wing at several times during the day and night, in indian river and brevard county, florida. nonblooded females were individually analyzed for fructose and glycogen. fructose content of mosquitoes collected early in the morning and held without food during the day diminished to approximately the same level as in mosquitoes collected late in the afternoon. however, fructose content of mosquitoes collected before sunset and held without food overnight dim ... | 1990 | 2370536 |
| small plot test of sustained-release altosid (methoprene) pellets against aedes taeniorhynchus in brackish water. | four percent methoprene pellets applied at a rate of 2.2 kg/ha effectively controlled adult aedes taeniorhynchus emergence (93%) for over 3 weeks. efficacy declined to 38% 4 weeks posttreatment. at a rate of 4.5 kg/ha, 95% control was maintained for 34 days with the exception of the 5th week when only 72% control was observed. | 1990 | 2324717 |
| a simulation model of water depth in mangrove basin forests. | the construction and validation of a model simulating the water depth within mangrove basin forests is described. rainfall, water table, water depth and tide data collected from a red mangrove basin forest on marco island, fl, was used to estimate model parameters. these included the basin spillover height, evapotranspiration-infiltration rate and the functional relationship of water depth change to rainfall, tide and basin spillover. the model was constructed with lotus 123 and calibrated from ... | 1990 | 2370528 |
| scalariform junctions in the malpighian tubules of the insects rhodnius prolixus (hemiptera: reduviidae) and aedes taeniorhynchus (diptera: culicidae). | the ultrastructure of scalariform junctions in the malpighian tubules of the hemipteran rhodnius prolixus and the dipteran aedes taeniorhynchus is described. both autocellular and intercellular scalariform junctions are illustrated. this is the first report of scalariform junctions in the malpighian tubules of a dipteran. when combined with previous observations by other authors, the presence of scalariform junctions has now been reported in the malpighian tubules of insects from five orders, in ... | 1990 | 29865758 |
| repellency of two controlled-release formulations of deet against anopheles quadrimaculatus and aedes taeniorhynchus mosquitoes. | two experimental controlled-release repellent formulations containing 35% (3m) and 44% (biotek) deet, respectively, were compared with a 75% standard formulation of deet used by the military. the military repellent was equal to or significantly better than the formulations in duration of protection against 2 mosquito species in laboratory and field tests, but the formulations contained only 47-59% the amount of deet in the military repellent. in all cases high levels of protection (greater than ... | 1989 | 2708995 |
| chronic pruritic eruption in patients with acquired immunodeficiency syndrome associated with increased antibody titers to mosquito salivary gland antigens. | five of seven patients with acquired immunodeficiency syndrome (aids) who had pruritus and a chronic, nonspecific-appearing skin eruption had increased antibody titers to antigens in the salivary glands of aedes taeniorhynchus, a salt marsh mosquito common to south florida. we hypothesize that the pruritus and skin lesions in patients with aids represent a form of chronic "recall" reaction. increased antibody titers to mosquito salivary gland antigens may be a consequence of nonspecific b cell a ... | 1989 | 2569000 |
| carbon dioxide and 1-octen-3-ol as mosquito attractants. | interval suction traps were used to study the attractant effect of co2 and 1-octen-3-ol on trap catches of mosquito populations at 2 different locations in florida. there was no significant increase in the numbers of mosquitoes caught when the concentration of co2 was increased from 200 to 1,000 cc/min. one-octen-3-ol used by itself attracted mosquitoes in numbers similar to co2 released at 200 cc/min. one-octen-3-ol and co2 acted synergistically in attracting significantly greater numbers of ae ... | 1989 | 2573687 |
| fluid secretion and microvillar ultrastructure in mosquito malpighian tubules. | the malpighian tubules of fourth instar larvae, pupae, and female adults of the mosquito aedes taeniorhynchus were examined with regard to in vitro fluid secretion rate and the ultrastructural features of the microvillar border of the primary cells. in vitro fluid secretion rates were determined after stimulation with 5-hydroxytryptamine. while larval tubules are capable of rapid fluid secretion, the tubules of pupae exhibit very low rates of secretion, indistinguishable from 0 nl/h. the capacit ... | 1989 | 2589535 |
| a new method of testing bacillus thuringiensis var. israelensis (h-14) formulations on aedes taeniorhynchus in an abandoned rice impoundment in south carolina. | 1989 | 2614409 | |
| evaluation of ulv naled applied simultaneously against caged adult aedes taeniorhynchus and culicoides furens. | two experiments were conducted to test application of ulv naled against adult aedes taeniorhynchus and culicoides furens exposed simultaneously in cages hung on poles at selected heights and distances from the spray source. ulv spray was released at 0.14 oz active ingredient/acre, droplet size 13.5 micron mmd. in both experiments, insecticide largely carried over the first poles. the greatest mortality occurred at the second pole position, 18.3 and 25.7 m, respectively, from the spray origin, an ... | 1988 | 3199122 |
| reduced rift valley fever virus infection rates in mosquitoes associated with pledget feedings. | infection rates were compared in culex pipiens and aedes taeniorhynchus after they fed on rift valley fever (rvf) viremic hamsters or ingested similar doses of rvf virus from blood-soaked pledgets. infection rates were significantly lower for mosquitoes that ingested virus from a pledget than for those that ingested similar doses from viremic hamsters. the method used to prevent normal clot formation for the pledget feedings (i.e., defibrination by shaking with glass beads or addition of heparin ... | 1988 | 3207178 |
| evaluation of equipment modifications and dosage rates of ground ulv applications of naled against aedes taeniorhynchus in a florida citrus grove. | efficiency of ground-applied naled (dibrom 14), based on caged mosquito bioassays in a moderately vegetated coastal southeastern florida citrus grove, proved to be significantly associated with downwind distance. however, association analysis between wind speed, temperature or relative humidity revealed no correlation between these meteorological factors and mosquito mortality. tests conducted with 3 of the commonly used ulv machines demonstrated no significant differences in efficiency. equipme ... | 1988 | 3251479 |
| adult body size and parity in field populations of the mosquitoes anopheles crucians, aedes taeniorhynchus and aedes sollicitans. | 1987 | 3504950 | |
| an ultrastructural study of dirofilaria immitis infection in the malpighian tubules of anopheles quadrimaculatus. | an ultrastructural study was conducted of the malpighian tubules of anopheles quadrimaculatus, both uninfected and following infection with dirofilaria immitis. the malpighian tubules in anopheles are composed of primary and stellate cells. the primary cells are the predominant cell type and are characterized by the presence of membrane-bound, intracellular, mineralized concretions and large apical microvilli containing mitochondria. following the infective blood meal, the microfilariae enter th ... | 1987 | 3655998 |
| effects of infection with dirofilaria immitis on diuresis and oocyte development in aedes taeniorhynchus and anopheles quadrimaculatus (diptera: culicidae). | 1987 | 3694626 | |
| mechanical transmission of bacillus anthracis by stable flies (stomoxys calcitrans) and mosquitoes (aedes aegypti and aedes taeniorhynchus). | we evaluated the potential of stable flies, stomoxys calcitrans, and two species of mosquitoes, aedes aegypti and aedes taeniorhynchus, to transmit bacillus anthracis vollum 1b mechanically. after probing on hartley guinea pigs with a bacteremia of ca. 10(8.6) cfu of b. anthracis per ml of blood, individual or pools of two to four stable flies or mosquitoes were allowed to continue feeding on either uninfected guinea pigs or a/j mice. all three insect species transmitted lethal anthrax infection ... | 1987 | 3112013 |
| increased toxicity of malathion diluted with heavy aromatic naphtha on adult aedes taeniorhynchus. | field tests of ground ulv application of cythion diluted with heavy aromatic naphtha (han), 1:4 ratio, at 0.45 oz ai/acre resulted in a 96% and 49% mortality of caged adult aedes taeniorhynchus located 150 and 300 ft downwind. cythion, 0.45 oz ai/acre produced a 33% mortality at 150 ft and a 21% mortality at 300 ft. this compares with an 8% mortality at 150 ft on a plot treated with han only (0.45 oz/acre), and a 6% mortality in an untreated area. the study was repeated on four successive nights ... | 1987 | 3504899 |
| comparative efficacy of technical and water-base formulations of arosurf msf against aedes taeniorhynchus. | 1986 | 3507533 | |
| variation in the length of the median pale band on the proboscis of aedes taeniorhynchus. | 1986 | 3507495 | |
| entomological studies at an enzootic venezuelan equine encephalitis virus focus in guatemala, 1977-1980. | the ecology of several potential mosquito vectors of venezuelan equine encephalitis (vee) alphavirus was studied in an enzootic focus of that virus on the pacific coast of guatemala over a four-year period. four species-culex taeniopus, mansonia titillans, culex nigripalpus and aedes taeniorhynchus-were most prevalent during the wet season when transmission normally occurs. however, only cx. taeniopus yielded vee virus. the bloodfeeding patterns of these species revealed that ae. taeniorhynchus ... | 1986 | 2873752 |