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Table 3 The efficiency of different container categories for the production of Aedes larvae

From: Entomological survey for identification of Aedes larval breeding sites and their distribution in Chattogram, Bangladesh

Container category

Containers

Frequency (%)

Positive containers (%)

Immature Aedes

CP

CE

Plastic receptacles

Plastic bucket, plastic drum, mineral water jar, Dahi pot, plastic bag, water tank, plastic bottle, plastic mug

215 (31)

16 (33)

4818

50

1.62

Tin and metal receptacles

Metal/tin can, metal bucket, metal drum, metal pan, aluminum pot

47 (7)

2 (4)

345

3.5

0.53

Cement and clay receptacles

Cement pot, clay pot, animal bowl, glass bottle, ceramic pot, melamine bowl, earthen jar

86 (12)

4 (8)

295

3

0.25

Natural receptacles

Coconut shell, mud hole, bamboo stamp, plant axil, tree hole, flooded floor, money plan tub, flower tub, and tray.

181 (25)

13 (27)

1086

11

0.43

Vehicle and machinery parts

Vehicle parts, tires, battery, water motor, cock sheet, air cooler, musical instrument, cement mixture

116 (17)

12 (24)

2934

30

1.83

Others receptacles

Unused sheet, plastic sheet, discarded food wrapper, broken toilet parts

59 (8)

2 (4)

275

3

0.34

  1. CP = container productivity (no. of immature × 100/all immature)
  2. CE = container efficiency (productivity/prevalence of container)
  3. Prevalence of container = no. of wet containers × 100/all containers