| [geographic variations of esterase isoenzymes in aedes polynesiensis marks]. | | 1978 | 754657 |
| a field trial of competitive displacement of aedes polynesiensis by aedes albopictus on a pacific atoll. | prior laboratory studies and field observations suggested that it might be possible to reduce the size of the population of, or eliminate, aedes polynesiensis by the introduction of aedes albopictus. the former mosquito is the principal vector of nonperiodic filariasis caused by wuchereria bancrofti and the latter is a closely related species refractory to the development of human filariae. the practicability of such competitive displacement was studied by a field trial on a remote coral atoll w ... | 1976 | 1008133 |
| some observations on filariasis in western samoa after mass administration of diethylcarbamazine. | an extremely efficient diethylcarbamazine administration campaign to eradicate wuchereria bancrofti has been carried out in western samoa. the use of the membrane-filtration technique has shown that a large number of people exhibit extremely low microfilarial densities, often with less than 10 in 1 ml of venous blood. it was found that one of these low level microfilaria carriers readily infected the local vector aedes polynesiensis and that development took place to the infective stage. it was ... | 1976 | 1265818 |
| natural infections of dirofilaria immitis in aedes (stegomyia) polynesiensis and aedes (finlaya) samoanus and their implication in human health in samoa. | dirofilaria immitis infections were observed in aedes polynesiensis and ae. samoanus in samoa, together with wuchereria bancrofti infections, in a study on sub-periodic bancroftian filariasis during 1978-1980. in the 4 indicator villages, the infection rate in ae. polynesiensis was 0.46% and the infective rate 0.09% (15,223 mosquitoes were dissected). the infection rate in ae. samoanus was 0.20% and the infective rate 0.08% (10,089 dissected). in 45 selected villages throughout the country, ae. ... | 1992 | 1440786 |
| wuchereria bancrofti infection in human and mosquito populations of a polynesian village ten years after interruption of mass chemoprophylaxis with diethylcarbamazine. | in 1991, a study on wuchereria bancrofti microfilariae (mf) and infection rates was carried out in the human and mosquito populations of a polynesian village where, 10 years before, the mf prevalence rate was 6.4% and twice-yearly mass treatment with 3 mg/kg of diethylcarbamazine (dec) was interrupted. venous blood samples were collected from 575 (97%) individuals aged 15 years or more, of whom 122 (21.4%) were mf positive. the mf carrier prevalence rate was 27.4% in males, significantly higher ... | 1992 | 1440820 |
| release of mesocyclops aspericornis (copepoda) for control of larval aedes polynesiensis (diptera: culicidae) in land crab burrows on an atoll of french polynesia. | on tereia island, rangiroa atoll, 14,321 land crab burrows were treated with the copepod mesocyclops aspericornis from january to june 1986, to control larvae of aedes polynesiensis marks. in october 1987, the entire island of tereia was retreated (17,300 burrows), and the neighboring island, voisin, was left untreated as a control. from 5 to 15 mo after treatment, burrows with m. aspericornis contained an average of 2 ae. polynesiensis immatures compared with 97 immatures from untreated burrows ... | 1992 | 1495064 |
| ivermectin for treatment of bancroftian filariasis in french polynesia: efficacy in man, effect on transmission by vector aedes polynesiensis. | forty male polynesian w. bancrofti carriers with mf counts greater than or equal to 20/ml were treated with a single ivermectin 50, 100, 150 or 200 mcg/kg dose. following therapy, mf levels fell to less than 1% of pretreatment levels in the carriers treated with the 3 highest doses. after one month, negativation rate was 40% in patients treated with a 50 mcg/kg dose, significantly lower than in patients treated with higher doses. recurrence of microfilaremia was observed by 3 months, mf recurren ... | 1990 | 2255839 |
| natural infections of wuchereria bancrofti in aedes (stegomyia) polynesiensis and aedes (finlaya) samoanus in samoa. | seven years after the 2nd mass treatment of the population with diethylcarbamazine, transmission of subperiodic wuchereria bancrofti was studied in four villages in samoa during one year by means of biting catches of aedes polynesiensis and a. samoanus. 2 villages were coastal, one inland bush and the other an inland coconut plantation community. overall infection and infective rates from 6702 ae. polynesiensis were 0.84 and 0.27% respectively, and the infection rate from 2858 ae. samoanus, coll ... | 1987 | 3328327 |
| distribution of vectors, transmission indices and microfilaria rates of subperiodic wuchereria bancrofti in relation to village ecotypes in samoa. | aedes polynesiensis and ae. samoanus biting densities and wuchereria bancrofti infection and infective rates were studied in 47 villages throughout the islands of samoa upolu, manono and savaii during 1978-79, and microfilaria (mf) rates were surveyed in 28 of the villages. the mf rate was correlated with both infection and infective rates of ae. polynesiensis in upolu, but not of ae. samoanus. in upolu, ae. polynesiensis was apparently the major vector. it was relatively more abundant in more c ... | 1987 | 3328328 |
| [bancroftian filariasis in french polynesia. epidemiologic status and perspectives after a 35-year preventive campaign]. | the authors assess of three decades of struggle against bancroftian filariasis in french polynesia. wuchereria bancrofti var. pacifica, aperiodic filaria, and aedes polynesiensis, mosquito with high parasitologic output, set up a cycle very well adapted to the polynesian environment; after numerous tests, the chemoprophylaxis with diethylcarbamazine (3 mg/kg/half-year) of all the exposed population has been decided, in association with methods of vector-control (use of predatory crustaceans). ho ... | 1986 | 3516427 |
| filariasis transmission in samoa. ii. some factors related to the development of microfilariae in the intermediate host. | the developmental period of microfilariae of sub-periodic wuchereria bancrofti in laboratory-bred aedes polynesiensis and ae. samoanus was shorter in the warm season (december to may) than in the cool season (june to november). in the warm season the microfilariae reached the 'sausage' stage in three days, cylindrical second stage in seven days and the infective stage in 12 days after the infecting meal. during the cool season the incubation period was extended to 14 days. microfilariae persisti ... | 1985 | 3885878 |
| filariasis transmission in samoa. i. relation between density of microfilariae and larval density in laboratory-bred and wild-caught aedes (stegomyia) polynesiensis (marks) and wild-caught aedes (finlaya) samoanus (gruenberg). | transmission experiments of laboratory-bred and wild-caught aedes polynesiensis and wild-caught ae. samoanus on carriers with different levels of microfilaraemia showed that the percentage of mosquitoes infected, the average number and range of larvae found in each infected mosquito were directly proportional to the microfilarial densities in the carrier at the time of feeding. there was no difference between the results for laboratory-bred and wild-caught mosquitoes. aedes polynesiensis fed on ... | 1985 | 3885880 |
| low-density microfilaraemia in subperiodic bancroftian filariasis in samoa. | among microfilaria (mf) carriers of subperiodic bancroftian filariasis in samoa, the low-density level of microfilaraemia was defined as 1-20 mf/ml, and the occurrence of low-density carriers (90 in the present study) was analysed by age, sex, and village in relation to the microfilarial prevalence rate. the low-density carriers were more numerous among those under 20 years and over 60 years old than in other age groups. the ratio of low-density carriers to the total of mf-positive subjects in a ... | 1985 | 3914924 |
| epidemic polyarthritis (ross river) virus infection in the cook islands. | an epidemic of ross river virus infection occurred in the cook islands early in 1980 and affected the majority of the inhabitants of rarotonga, the most populated island in the group. this represents the easternmost extension of the virus which, until 1979, was believed limited to australia, new guinea, and the solomon islands. the clinical manifestations of ross river disease, predominantly polyarthritis, did not differ significantly from those observed previously in australia. however, unlike ... | 1981 | 7325286 |
| variation in the vector competence of aedes polynesiensis for wuchereria bancrofti. | the vector competences of 6 geographic strains of aedes polynesiensis for wuchereria bancrofti were studied using two types of experimental infections. experimental infection of laboratory-bred mosquitoes fed on the carriers' forearms with different levels of microfilaraemia showed that microfilariae (mf) uptake was directly proportional to the carrier's mf density and, as mf densities decreased, concentration capacity of ae. polynesiensis increased. it was also shown that infection has an impor ... | 1995 | 7609987 |
| insecticide susceptibility in mosquitoes (diptera: culicidae) from french polynesia. | susceptibility to six organophosphate (op), two pyrethroid (py), and one carbamate (c) insecticides was investigated in culex pipiens quinquefasciatus say, aedes aegypti (l.), and aedes polynesiensis marks larvae from the island of tahiti. cx. p. quinquefasciatus and ae. aegypti were compared with susceptible reference strains treated simultaneously. a low, but significant, resistance to bromophos (4.6x), chlorpyrifos (5.7x), fenthion (2.4x), fenitrothion (5.0x), temephos (4.3x) and permethrin ( ... | 1994 | 7966164 |
| the relative importance and distribution of aedes polynesiensis and ae. aegypti larval habitats in samoa. | in preparation for a filariasis control programme in samoa, during 1978 monthly larval surveys of the vector mosquito aedes polynesiensis were carried out in four study villages in the main island of upolu. a more extensive survey of larval habitat distribution was then made in twenty-two villages of upolu and eighteen of savai'i island, to determine the importance of habitat types according to their abundance, volume of water and whether their productivity was permanent or seasonal. ae.aegypti ... | 1993 | 8435486 |
| evaluation of entomopathogenic bacteria against aedes polynesiensis, the vector of lymphatic filariasis in french polynesia. | thirteen strains among 3 species of entomopathogenic bacteria were tested against 3 medically important mosquito species in french polynesia. two strains of bacillus thuringiensis were highly toxic to aedes polynesiensis, aedes aegypti, and culex quinquefasciatus. six of 7 strains of bacillus sphaericus tested were highly toxic to cx. quinquefasciatus but not to the aedes spp. clostridium bifermentans serovar. malaysia was more toxic to ae. polynesiensis than to the other 2 species. entomopathog ... | 1995 | 8825516 |
| effects of larval density on the size of aedes polynesiensis adults (diptera: culicidae). | replicated cohorts of a tahitian laboratory strain of aedes polynesiensis marks were reared at 3 larval densities with a fixed amount of food. for larvae provided with limiting per capita food (i.e., 400 larvae per pan with 500 mg liver powder) relative to standard rearing conditions (i.e., 200 larvae per pan), mean pupal survival as well as male and female mean adult dry weights were significantly reduced and median developmental times were significantly prolonged. however, excess per capita fo ... | 1999 | 10593069 |
| ambient temperature effects on the extrinsic incubation period of wuchereria bancrofti in aedes polynesiensis: implications for filariasis transmission dynamics and distribution in french polynesia. | temperature effects on development of the human filarial parasite wuchereria bancrofti (cobbold) (filaridea: onchocercidae) in the main pacific vector aedes polynesiensis marks (diptera: culicidae) are analysed in relation to ambient climatic conditions. a statistical model of the extrinsic cycle duration as a function of temperature is described and used to distinguish three patterns of w. bancrofti transmission dynamics: continuous, fluctuating and discontinuous, occurring from north to south ... | 2001 | 11434550 |
| age-grading and growth of wuchereria bancrofti (filariidea: onchocercidae) larvae by growth measurements and its use for estimating blood-meal intervals of its polynesian vector aedes polynesiensis (diptera: culicidae). | growth in length and width of wuchereria bancrofti (filariidea: onchocercidae) larvae developing in its polynesian vector aedes polynesiensis (diptera: culicidae) was analysed using a mathematical approach to objectively extract patterns. l1 had a u-shaped growth in length, while widths followed an s-shaped function. l2 had an s-shaped growth in length and width. growth in length of l3 was also s-shaped, while widths had an asymptotic size following a period of rapid shrinkage. the greatest diff ... | 2002 | 12062489 |
| evaluation of insecticide impregnated baits for control of mosquito larvae in land crab burrows on french polynesian atolls. | land crab burrows are larval mosquito habitats of major significance in the pacific region. they are constituted by a sinuous tunnel leading to a chamber in contact with the water table, where mosquito larvae proliferate. controlling larvae in these sites is difficult, because the configuration of burrows prevents the use of standard techniques. an experiment was carried out in french polynesia to control aedes polynesiensis marks and culex spp. breeding in burrows of the land crab cardisoma car ... | 2002 | 12144299 |
| control of the aedes vectors of the dengue viruses and wuchereria bancrofti: the french polynesian experience. | in most of the 130 islands of french polynesia, the stenotopic mosquitoes aedes aegypti (the main local vector for the viruses causing dengue) and aedes polynesiensis (the main local vector of wuchereria bancrofti) share many breeding sites in water containers such as discarded cans, coconut shells, buckets and water-storage pots and drums. in addition to selective application of insecticides, non-polluting methods of controlling these mosquitoes have been evaluated during the last decade in two ... | 2002 | 12625924 |
| surveillance and behavioral investigations of aedes aegypti and aedes polynesiensis in moorea, french polynesia, using a sticky ovitrap. | the effectiveness of the sticky ovitrap was assessed for the container-breeding aedes aegypti and aedes polynesiensis in moorea, french polynesia. these mosquitoes are the primary vectors of dengue viruses and bancroftian filariasis, respectively, in the area. both ae. aegypti and ae. polynesiensis were collected in greatest numbers in sticky ovitraps baited with water or grass infusions rather than leaf infusions. sticky ovitrap collections were significantly higher for both species in the 12 h ... | 2004 | 15669377 |
| the relative attractiveness of carbon dioxide and octenol in cdc- and evs-type light traps for sampling the mosquitoes aedes aegypti (l.), aedes polynesiensis marks, and culex quinquefasciatus say in moorea, french polynesia. | two dominant day-biting pests and vector species on the island of moorea in french polynesia are aedes (stegomyia) aegypti (l.) and aedes (stegomyia) polynesiensis marks, major vectors of dengue viruses and wuchereria bancrofti, respectively. their surveillance is hindered by a relative lack of attraction to light traps, necessitating the undesirable use of human bait collections with the inherent risks of pathogen transmission. the effectiveness of cdc- and evs-type light traps baited with olfa ... | 2004 | 15707289 |
| [the history of lymphatic filarlasis control programme in french polynesia: lessons from a 50 years effort]. | with a mean prevalence of microfilariaemia superior to 15% in the four archipelagos of the territory french polynesia was confronted with a huge public health problem of wuchereria bancrofti - associated filarias during the 50s. supported by a strong us sponsoring, a large scale control campaign based on diethylcarbamazine (dec) distribution was launched and led to the method of spaced doses (the most useful protocol being one annual dec dose). progressively applied to the whole polynesian popul ... | 2005 | 15915973 |
| aedes aegypti (l.) and aedes polynesiensis marks (diptera: culicidae) in moorea, french polynesia: a study of adult population structures and pathogen (wuchereria bancrofti and dirofilaria immitis) infection rates to indicate regional and seasonal epidemiological risk for dengue and filariasis. | populations of aedes aegypti (l.) and aedes polynesiensis (marks) on moorea island, french polynesia, the local vectors of dengue and filariasis, respectively, were sampled by landing/biting collection at nine localities on the east, north, and west coasts, during the late dry season, early and late wet season (september-may) 2003 and 2004, to investigate epidemiologically important features of the populations and compare them between regions and months. biting rates of both species tended to in ... | 2005 | 16465747 |
| effects of larval density and predation by toxorhynchites amboinensis on aedes polynesiensis (diptera: culicidae) developing in coconuts. | organisms manipulated as biological control agents of disease vectors should tolerate ranges of developmental conditions exploited by their target species. furthermore, they should reduce numbers of host-seeking vector adults without providing fitness benefits to larval survivors developing among fewer competitors. we studied electrochemistry in rat-chewed coconuts, an important developmental habitat used by aedes polynesiensis, a vector of lymphatic filariasis. we also studied the effects of la ... | 2005 | 16506567 |