Editing Cane toad (section)

===New Guinea===
The cane toad was introduced into [[New Guinea]] to control the [[hawk moth]] larvae eating [[sweet potato]] crops.<ref name="ZugLindgremPippet1975p31-50" /> The first release occurred in 1937 using toads imported from Hawaiʻi, with a second release the same year using specimens from the Australian mainland. Evidence suggests a third release in 1938, consisting of toads being used for human [[pregnancy test]]s—many species of toad were found to be effective for this task, and were employed for about 20&nbsp;years after the discovery was announced in 1948.<ref name="Easteall981p103">{{Harvnb|Easteal|1981|page=103}}</ref><ref name="TylerWassersugSmith2007pp6-7">{{Harvnb|Tyler|Wassersug|Smith|2007|pages=6–7}}</ref> Initial reports argued the toads were effective in reducing the levels of [[cutworm]]s and sweet potato yields were thought to be improving.<ref name="Lever2001p118">{{Harvnb|Lever|2001|page=118}}</ref> As a result, these first releases were followed by further distributions across much of the region,<ref name="Lever2001p118" /> although their effectiveness on other crops, such as cabbages, has been questioned; when the toads were released at [[Wau, Papua New Guinea|Wau]], the cabbages provided insufficient shelter and the toads rapidly left the immediate area for the superior shelter offered by the forest.<ref name="Tyler1976pp83-84">{{Harvnb|Tyler|1976|pages=83–84}}</ref> A similar situation had previously arisen in the Australian cane fields, but this experience was either unknown or ignored in New Guinea.<ref name="Tyler1976pp83-84" /> The cane toad has since become abundant in rural and urban areas.<ref name="Lever2001p119">{{Harvnb|Lever|2001|page=119}}</ref>