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

Table 4 Calculator output for male southern house mosquito Cx. quinquefasciatus IIT/SIT mass release production needs as projected for a 117 km² area

Site	Elevation (m)^a	Wild-type males	IIT:Wild-type males (10:1)^b	Rate used	First-year cost ($)^c	Subsequent year costs ($)
Malama Ki	25	265,941.0	2,659,410	9	$4,240,716.00	$1,691,470.00
Nanawale	36	4,594,999.5	45,949,995	150	$66,605,273.00	$28,191,158.00
Bryson's	314	853,924.5	8,539,245	28	$12,655,118.00	$5,262,350.00
Waiakea	885	1,696,558.5	16,965,585	57	$25,493,204.00	$10,712,640.00
Cooper	1024	1,615,477.5	16,154,775	54	$24,147,298.00	$10,148,817.00
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

Each row represents a proxy location in which densities have been defined. The elevation of the proxy site is shown, as well as the number of wild-type males projected into an equivalent site with an area of 117 km². 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
^aKokee State Park Visitors Center elevation is ~ 1115 m; Alakaʻi Swamp elevation is ~ 1219–1402 m
^bAlakaʻi Wilderness Reserve with a 2 km buffer has a combined area of 117 km²
^cThis does not include mosquito dispersal/application costs

ISSN: 1756-3305