| culex mosquitoes in temporary urban rain pools: seasonal dynamics and relation to environmental variables. | the study was conducted in a park of buenos aires city, where a total of 89 rain pools were sampled weekly for mosquito immature stages over a one-year period. the aim of the present paper was to investigate the seasonal dynamics of three culex species breeding in temporary rain pools and to analyze the relationships of the presence of these species to pool dimensions, pool age, vegetation, and insolation degree. the three species showed differences in their seasonal patterns, culex dolosus bein ... | 2004 | 15707296 |
| dirofilariasis in argentina: historical review and first report of dirofilaria immitis in a natural mosquito population. | argentina is one of the four south american countries where the presence of dirofilaria immitis is currently confirmed. the objective of this study was to review information on dirofilariasis in the country, and to report our recent findings on mosquito vectors. since the first report of dogs with unidentified microfilariae in 1926, d. immitis was found in seven provinces and canine prevalence ranged 0-71% at local scale. national prevalence was 8% by the end of the 1980s and current information ... | 2006 | 16310953 |
| predation efficiency of indigenous larvivorous fish species on culex pipiens l. larvae (diptera: culicidae) in drainage ditches in argentina. | two neotropical freshwater fish species, cnesterodom decemmaculatus (poeciliidae) and jenynsia multidentata (anablepidae), were collected from human-made ditches, a common habitat of the house mosquito culex pipiens in la plata, argentina. cnesterodom decemmaculatus was recorded in 62 of the 100 examined ditches, whereas j. multidentata was collected from only 21 ditches sympatrically with c. decemmaculatus. culex pipiens was the only mosquito species collected, and its larvae and pupae were fou ... | 2006 | 16859096 |
| the effect of shade on the container index and pupal productivity of the mosquitoes aedes aegypti and culex pipiens breeding in artificial containers. | the aim of this study was to assess whether certain attributes of larval breeding sites are correlated with pupal productivity (i.e. numbers of pupae collected per sampling period), so that these could be used as the focus for control measures to enhance control efficiency. therefore, the objectives were to identify the months of highest pupal productivity of aedes aegypti (l.) and culex pipiens l. (diptera: culicidae) in an urban temperate cemetery in argentina where artificial containers of < ... | 2009 | 19239617 |
| native argentinean cyclopoids (crustacea: copepoda) as predators of aedes aegypti and culex pipiens (diptera: culicidae) mosquitoes. | copepods from la plata, argentina were investigated to characterize the local community of larvivorous copepods inhabiting mosquito breeding sites and to identify new predator species of the mosquitoes which occur in artificial containers, aedes aegypti and culex pipiens. diversity of larvivorous cyclopoids was highest in permanent pools. predation by sex and age, selectivity on mosquito species, and daily predation rate during five days were studied for acanthocyclops robustus, diacyclops urugu ... | 2009 | 20073334 |
| seasonal occurrence of immature mosquitoes in swimming pools in buenos aires, argentina. | the seasonal variation in the density of swimming pools and the occurrence of immature mosquitoes in these habitats were studied in the temperate city of buenos aires, argentina. the density of swimming pools was highest in the summer (6.0 pools/ha) when temporal pools predominated; it was lowest in the winter (0.9 pools/ha) when only permanent pools were recorded. the presence of immature stages of mosquitoes was mainly associated with the lack of use and maintenance of the pools in the fall se ... | 2010 | 20402356 |
| genetic-morphometric variation in culex quinquefasciatus from brazil and la plata, argentina. | variation among natural populations of culex (culex) quinquefasciatus say is associated with different vectorial capacities. the species cx. quinquefasciatus is present in the equatorial, tropical and subtropical zones in the brazilian territory, with intermediate forms between cx. quinquefasciatus and culex pipiens occurring in regions of latitudes around 33°-35° s. herein, we studied geographically distinct populations of cx. quinquefasciatus by genetic characterization and analysis of intra-s ... | 2010 | 20835615 |
| pcr detection of dirofilaria immitis in aedes aegypti and culex pipiens from urban temperate argentina. | dirofilariasis, a mosquito-borne disease of dogs caused by the nematode dirofilaria immitis (leidy; spirurida: onchocercidae), has now become a growing zoonotic concern. based on direct microscopical observation, aedes aegypti (l.) and culex pipiens l. (diptera: culicidae) have been previously incriminated as potential vectors of d. immitis in urban temperate argentina. in this study, an effort was made to provide evidence for this assumption by screening of mosquitoes for d. immitis infection u ... | 2010 | 21072539 |
| Isolation and identification of a-proteobacteria from Culex pipiens (Diptera Culicidae) larvae. | A survey of drainage ditches in suburban areas of La Plata, Buenos Aires province, Argentina for pathogens of Culex pipiens larvae was conducted from 2003 to 2006. C. pipiens larvae of opaque, white color were found in several of those field collections. When the white larvae were dissected and observed by phase-contrast microscopy in wet-mount preparations, the presence of bacteria, located in the hemocoel, was recorded. Laboratory experiments were performed to elucidate the pathway for transmi ... | 2012 | 22036984 |
| Tire-breeding mosquitoes of public health importance along an urbanisation gradient in Buenos Aires, Argentina. | Used vehicle tires are a source of mosquito vectors and a means of their introduction and expansion. With the aim of assessing the effects of urbanisation on the main mosquito vectors in temperate Argentina, the infestation levels of Aedes aegypti (L.) and Culex pipiens L. were studied in used tires from highly urbanised cities to low-urbanised small towns in Buenos Aires. Immatures of both species accounted for 96% of the 9,722 individuals collected; the total individuals collected represented ... | 2011 | 22012221 |