Culex

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Culex

[′kyü‚leks]
(invertebrate zoology)
A genus of mosquitoes important as vectors for malaria and several filarial parasites.

Culex

 

a genus of mosquitoes of the family Culicidae. When laid on the water, the eggs stick to each other in such a way that they form a boat-shaped mass.

There are more than 400 species, of which 20 are found in the USSR, chiefly in the Far East, Middle Asia, and the Caucasus. They are harmful to man as bloodsuckers; some carry the causative agents of such diseases as filariasis, Japanese B encephalitis, and encephalomyelitis. The most common species is Culex pipiens, which feeds on the blood of birds and attacks man primarily in southern regions. It is more often found in populated areas, where it flies into houses. It breeds mostly in ditches, barrels, and pits. There are several generations in a summer, with the greatest numbers occurring at the end of summer and in the fall. It winters in basements and cellars. Culex is not a carrier of the causative agents of human malaria; it can be the carrier of plasmodia which develop in the blood of birds. Countermeasures are the same as those used against mosquitoes of the genus Anopheles.

REFERENCE

Gutsevich, A. V., A. S. Monchadskii, and A. A. Shtakel’berg. Komary: Semeistvo Culicidae. Leningrad, 1970.

A. V. GUTSEVICH

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For culicines, the ZINB model results indicated a significant association between vector abundance and year.
Culicines method/year gambiae funestus CDC LT (a) 2006 0.196 (194) 0.006 (6) 24.47 (24,230) 2007 0.033 (51) 0 (0) 15.51 (23,784) 2008 0.018 (26) 0 (0) 18.40 (26,438) 2009 0 (0) 0 (0) 10.66 (6,639) PSC (b) 2010 0 (0) 0 (0) 1.25 (274) 2011 0.006 (3) 0 (0) 1.66 (895) Sampling Other Percent malaria method/year species cases in children (no.
In RVF virus-endemic areas with warm and moist climates, infected aedines can emerge each year, and even infected culicines can hibernate as adults, resulting in regular exposure of livestock to RVF virus.
The remaining collected mosquitoes were culicines (639 mosquitoes, 28.1%), aedines (59 mosquitoes, 2.6%) and Ma.
Morphological identification of mosquitoes caught during the study Culicines Study areas Male Female State housing 46 (25.5) 71 (39.4) Federal housing 67 (25.5) 92 (35.1) Old Odukpani 38 (16.3) 123 (52.7) Total 151 (22.3) 286 (42.3) Anophelines Study areas Male Female Total State housing 16 (8.8) 47 (26.1) 180 Federal housing 39 (14.8) 64 (24.4) 262 Old Odukpani 20 (8.6) 52 (22.3) 233 Total 75 (11.1) 163 (24.1) 675 Figures in parentheses indicate percentages.
The culicines occurred in partly acidic and partly alkaline pools (pH 5.86 - 9.85).
varuna 8 (2) 16 (4) Culicines (11 spp) 716 (179) 2237 (559.3) Total 1156 (289) 3700 (925) Species Total Parity rate Anopheles aconitus 88 (11) -- An.
Larval sampling: A cross-sectional larval sampling in December 2006 to generate stage-specific estimates of Anopheles and culicine larval densities and diversity was done.