Opuntia tuna

An example of potential use is the study by Paredes-Lopez (1974) of Candida growth on the juice from Opuntia tunas. From 100 kg fresh fruit, 3 kg of yeast cells were produced, which were 40-50% protein on a dry weight basis. As stated by these authors, the millions of tons of fruit wasted annually could be used for useful protein production. 

American cochineal. Insect (female) living on the host plant Nopa-lea coccinellifera (L.) SALM-DYCK (torch- or fig-thistle, "nopal plant"), besides on Opuntia monacantha O.TUNA, 0.vulgaris MILL, non auct. mult., and Pe(i)reskia aculeata MILL. 

---