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Table 2 Summary of species composition and density of anopheline larvae in the irrigated and non-irrigated villages in the Ziway area, Ethiopia, between November 2009 and October 2010

From: Increased malaria transmission around irrigation schemes in Ethiopia and the potential of canal water management for malaria vector control

Types of breeding habitats Mean larval densitya Type of mosquito larval habitat
An. arabiensis An. pharoensis An. coustani An. funestus Total
n (%) n (%) n (%) n (%) n (%)
Irrigated villages       
Brick-making pits 3.2 20 (1.5) 16 (1.9) 16 (5.1) 0 (0.0) 52 (2.0)
Leakage pools from irrigation canal 46.5 319 (24.5) 280 (32.9) 67 (21.2) 19 (29.2) 685 (27.1)
Non-functioning canal pools 29.3 139 (10.7) 57 (6.7) 41 (13.0) 0 (0.0) 237 (9.4)
Rain pools 12.4 292 (22.5) 130 (15.3) 63 (19.9) 0 (0.0) 485 (19.2)
Agricultural field puddles 41.9 530 (40.8) 367 (43.2) 129 (40.8) 46 (70.8) 1,072 (42.3)
Total (% from row total) 38.0 1,300 (51.3) 850 (33.6) 316 (12.5) 65 (2.6) 2,531 (100)
Non-irrigated villages       
Brick-making pits 4.1 56 (20.6) 9 (11.5) 8 (10.3) -* 73 (17.1)
Leakage pools from irrigation canal# - - - - - -
Non-functioning canal pools# - - - - - -
Rain pools 9.3 216 (79.4) 69 (88.5) 70 (89.7) - 355 (82.9)
Agricultural field puddles# - - - - - -
Total (% from row total) 6.7 272 (63.6) 78 (18.2) 78 (18.2) - 428 (100)
Grand total (% from row total) NA 1572 (53.1) 928 (31.4) 394 (13.3) 65 (2.2) 2,959 (100)
  1. amean larval density refers to no. anopheline larvae per sq m.
  2. * - shows this mosquito species was not found in either larval or adult form in these villages.
  3. # - these mosquito breeding habitats were absent in the non-irrigated villages.
  4. NA – not applicable.