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Table 5 The male southern house mosquito Cx. quinquefasciatus IIT/SIT mass release production needs for a 117 km2 area

From: A mass rearing cost calculator for the control of Culex quinquefasciatus in Hawaiʻi using the incompatible insect technique

Site

Elevation (m)a

Wild-type males

IIT:Wild-type males (10:1)b

Rate used

First year-cost (US$)c

Subsequent year costs (US$)

0.43:1 male/female sex ratio

Nanawale

36

4,594,999.5

45,949,995

150

$66,605,273.00

$28,191,158.00

Crater

1177

95,764.5

957,645

4

$2,028,874.00

$751,764.00

Pu'u

1247

36,153.0

361,530

2

$1,162,937.00

$375,882.00

No laboratory costs added

Nanawale

36

4,594,999.5

45,949,995

150

$55,841,358.00

$28,191,158.00

Crater

1177

95,764.5

957,645

4

$1,741,836.00

$751,764.00

Pu'u

1247

36,153.0

361,530

2

$1,019,418.00

$375,882.00

No irradiator costs added

Nanawale

36

4,594,999.5

45,949,995

150

$66,355,273.00

$28,191,158.00

Crater

1177

95,764.5

957,645

4

$1,778,874.00

$751,764.00

Pu'u

1247

36,153.0

361,530

2

$912,937.00

$375,882.00

  1. Each row represents a proxy location in which densities have been defined. The elevation of the proxy site as well as the number of wild-type males projected into an equivalent site with an area of 117 km2 is shown. Italicized areas have elevations equivalent to the Alakaʻi Wilderness Reserve. An overflooding ratio of 10:1 is used to infer the amount of IIT mosquitoes needed to control mosquito densities at the proxy site. The “rate used” column identifies how many larval rearing units (and their associated infrastructure) are necessary to rear the number of IIT males. In the table a rate of 1 is equivalent to the production of ≤ 1 million IIT/SIT culicids using the default (1:1) sex ratio
  2. aKokee State Park Visitors Center elevation is ~ 1115 m; Alakaʻi Swamp elevation is ~ 1219–1402 m
  3. bAlakaʻi Wilderness Reserve with a 2 km buffer has a combined area of 117 km2
  4. cThis does not include mosquito dispersal/application costs