Why is the cotton whitefly considered invasive?

The cotton whitefly, scientifically known as Bemisia tabaci, is considered invasive because it is a species that has spread outside its native range and can cause harm to agricultural crops, ecosystems, or the economy in areas where it is not naturally found. Invasive species like the cotton whitefly can outcompete native species for resources, spread diseases, inflict damage on crops, and lead to increased control costs for farmers.

The whitefly feeds on the sap of plants and can infest a wide range of crops, including cotton, tomatoes, and other vegetables. When feeding, they excrete a sticky substance known as honeydew which can lead to the growth of sooty mold on the plants, further damaging the crops by impeding photosynthesis. Moreover, the cotton whitefly is a known vector for many plant viruses, which can cause further crop losses.

Their capacity for high reproductive rates and rapid spread makes them especially problematic. Furthermore, whiteflies have shown the ability to develop resistance to many pesticides, which can make management and control of their populations challenging.