Establishment of the Invasive Cactus Moth, \u3ci\u3eCactoblastis cactorum\u3c/i\u3e (Berg) (Lepidoptera: Pyralidae) in Pakistan: A Potential Threat to Cultivated, Ornamental and Wild \u3ci\u3eOpuntia\u3c/i\u3e spp. (Cactaceae)

Subsequent to the significant accomplishment of biological control of Opuntia weeds in Australia, the larvae of the cactus moth, Cactoblastis cactorum (native to parts of South America), were released in many countries for the biological control of native Opuntia species (Simmonds and Bennett, 1966). Inauspiciously, larvae were also released in the Caribbean, where the moth spread naturally and by the human support all over the region (García-Turudi et al., 1971). Its enhanced dissemination rate and the biological potential for invasiveness, suggests that the cactus moth is likely to become an invasive pest of Opuntia in the Southeast United States, Mexico, and southwestern America. Its damage is restricted mainly to the plants of genus Opuntia (plants with the characteristic of flat prickly pear pads of the former genus Platyopuntia, now considered to be the part of the genus Opuntia). In this region, plants of this genus provide valuable resources for humans, livestock, and wildlife such as food, medicine, and emergency fodder, while in the arid and semi-arid regions, the plants play key roles in ecosystem processes and soil conservation. At present, the cactus moth has developed into a severe threat to the high diversity of prickly pear cacti, all over the world for both the native and cultivated species of Opuntia (IAEA, 2002)