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Table 1 Brackish water breeding mosquitoes in Jaffna district

From: Salinity-tolerant larvae of mosquito vectors in the tropical coast of Jaffna, Sri Lanka and the effect of salinity on the toxicity of Bacillus thuringiensis to Aedes aegypti larvae

Species Transmitted diseases/medical significance Location of larval collection Period of larval collection Nature of habitat (numbers of sites with larvae) Average larval number per site in 350ml/ dip Salinity range of brackishwater habitats withlarvae (ppt)
Aedes aegypti Dengue, Chikungunya Kurunagar 2011Sep – 2012 May Used well (27) 6 2-9
   Kurunagar 2011 Sep Barrel (1) 35 10
Aedes albopictus Dengue, Chikungunya Sarasalai 2012 Jan Tube near brackishwater mangrovemarsh (1) 10 4
   Sarasalai 2012 Jan Battery box in brackishwater mangrovemarsh (1) 8 4
Anopheles subpictus Malaria Delft 2012Feb-April Pond (2) 14 2-6
Nainativu 2012 April Used well (20) 17 4-39
Passaiyoor 2011 Aug Disused boats (2) 4 15-18
Kurunagar 2011 Sep Used well (3) 7 2-6
Sarasalai 2012 Jan Pit in brackish water mangrove marsh (2) 11 10-12
Pannai bridge 2012 May Brackish water mangrove marsh (1) 3 10
Anopheles barbirostris Malaria Delft 2012 April Used well (3) 4 5-6
  Sarasalai 2012 Jan Pit near brackish water mangrove marsh (1) 2 4
   Nainativu 2012 April Used well (1) 3 15
Anopheles varuna Malaria Delft 2012 Jan-April Used well (11) 4 2-4
Anopheles culicifacies Malaria Delft 2012 Jan-April Used well (3) 3 2-4
   Sarasalai 2012 Jan Brackish water mangrove marsh (1) 2 4
Culex sitiens Japanese encephalitis, Ross River fever and filariasis Kurunagar 2011 Sep- Disused boats (1) 35 20
Kurunagar 2011 Sep-2012 Jan Used wells (2) 28 2-6
Nainativu 2011Aug - 2012 May Used wells (18) 24 2-39
Sarasalai 2012 Jan Pit near brackish water mangrove marsh (1) 6 12
Delft 2012 March Pond (5) 9 4-6
Pannai bridge 2012 May Brackish water mangrove marsh (1) 5 68
Lutzia fuscanus Not a vector but feeds on larvae of mosquito vectors Nainativu 2011 Oct Used well (1) 5 10