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Many of these, especially the tiger pear, quickly became widespread invasive species, rendering 40,000 km 2 (15,000 sq mi) of farming land unproductive. [2] The moth Cactoblastis cactorum from Argentina, whose larvae eat prickly pear, was introduced in 1925 and almost wiped out the prickly pear. This case is often cited as an example of ...
From the Report of the Prickly-pear Travelling Commission. In 1912, Johnston was appointed chairman for a committee, the Prickly-Pear Travelling Commission, formed to investigate control measures for the prickly pear cactus. In 1788, Governor Philip and the early colonists are credited with the introduction of the prickly pear to Australia. The ...
Rose Ethel Janet White-Haney (11 March 1877 – 21 October 1953), known as Jean White-Haney, was a botanist in Queensland, Australia. She was officer-in-charge of the Queensland Board of Advice on Prickly Pear Destruction and helped develop biological control methods for managing the invasive cactus. [1]
By 1862 prickly pear was growing in the Chinchilla district and spread rapidly in areas where land holdings were extensive and population relatively low. [1] Prickly pear was declared a noxious weed in Queensland in 1893. By 1900 approximately 10,000,000 acres (4,000,000 ha) were affected by prickly pear; an area which had extended to an ...
The process of land selection in Queensland in Australia began in 1860. It continued under a series of land acts in subsequent years. [1] When Britain claimed possession of Australia, it did so based on terra nullius (that the land belonged to nobody) and did not acknowledge that Indigenous people had any ownership over the land. All land in ...
Opuntia aurantiaca, commonly known as tiger-pear, jointed cactus or jointed prickly-pear, is a species of cactus from South America. [2] The species occurs naturally in Argentina , Paraguay and Uruguay and is considered an invasive species in Africa and Australia .
Strains of the species have been isolated from rot occurring on prickly pear plants in Hawaii as well as on grape berries and wine in Australia, Greece, and China. [2] [4] A 2010 study found that H. opuntiae was the prevalent species involved with the post-harvest fermentation of cocoa beans on a plantation in Malaysia. [5]
However, dense populations of prickly pear still exist in cold and rainy areas, which are less favorable to the development of Dactylopius opuntiae. Subsequent introductions of Dactylopius opuntiae inside the Kruger National Park in the mid-1990s failed to control Opuntia stricta , confirming the importance of matching particular biotypes of ...