Biology, History, Threat,. Surveillance and Control of the Cactus Moth,. Cactoblastis cactorum. H. Zimmermann. S. Bloem. H. Klein. Joint FAO/IAEA Programme. This ancient photographic record on the left is one example of the amazing way cactoblastis (Cactoblastis cactorum) chewed its way through. Cactoblastis cactorum is a moth that preys specifically on cacti species. It has been introduced in various locations around the globe to provide.

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As the moth moves through the Southeastern United States, it endangers many cactus species and threatens many ecosystems.

As well as the threat to wild cacti, there cactoblastiw over ,ha of Opuntia plantations in Mexico that support a thriving agricultural industry, most of which is centered on harvesting fruits or pads.

Researchers are projecting a westward expansion of Cactoblastis cactorum in North America. By sea, new regulations by APHIS require livestock fodder in transit found with evidence of Cactoblastis cactorum to be destroyed, fumigated, or returned to its country of origin.

The larvae of Cactoblastis cactorum are bright catorum with large dark spots forming transverse bands. Effects of changes in atmospheric carbon dioxide on the location of host by the moth Cactoblastis cactorum. Surveys between July and December revealed that egg-sticks of Cactoblastis cactorum in north Florida are attacked by egg parasitoids in the genus Trichogramma: Larvae are gregarious which leads to an almost communal destruction of the cactus.

The larvae feast their way through the plants for some weeks, causing varying degrees of damage to the host plant depending on their numbers and the season.

Please consider upgrading your browser to the latest version or installing cactbolastis new browser. Currently, the best method of contorl is by manual removal of the “egg caftorum.

When it is their cactlblastis, they actually leave the plant and find shelter under loose bark, dead leaves or other rubbish at or near the base of the plant.

Florida Entomologist [Cactoblastis cactorum in North America: These plants are harvested on over three million hectares in Mexico where they grow naturally Soberon et al. Effective overflooding ratios and release-recapture field studies. Union of South Africa About four pads cactoblastix needed for the development of the larvae from a complete egg stick.


Estimated stress factors in the moths’ native community indicate that it is restricted to temperate climates, due to the incubation period of its larvae, [10] but host associations may also play an important role in determining spread.

Cactoblastis cactorum – Wikipedia

However, experts predict that their spread to Texas is expected to occur soon. However, large amounts of cactkblastis during a single generation time is a trait of semelparous reproduction.

In Florida, peak periods of sexual activity begin between nautical and civil twilight and ends before sunrise for a detailed behavioural sequence of sexual activity see Hight et al. As mentioned above, the arrival of Cactoblastis cactorum into continental North America is a major concern. This wasp was misidentified as A. Eggs and larvae, or infested cladodes, were sent from Nevis to Montserrat and Antigua in and to Grand Cayman in Bennett et al.

Moth Photographers Group – Cactoblastis cactorum –

By the yearprickly pear mainly Opuntia stricta spp. Distinct black antemedial and subterminal lines are present.

Burrowing activity usually causes secondary bacterial activity which hastens the destruction of cladodes. One option currently being explored is a bacterium, Bacillus thuringiensiswhich would kill middle-aged larvae of Cactoblastis cactorum. Pyralidae in the United States.

For this reason, the winter generation of cactoblastis seems to have the best results in northern New South Wales because of the reduced ant presence.

Trichogramma pretiosum Riley, Trichogramma fuentesi Torre, and an additional unidentified Trichogramma species belonging to the Trichogramma pretiosum group. The pupa is enclosed in a fine white silk cocoon which consists of a loose cactohlastis covering and a more compact inner cocoon. They then enter cactoeum cocoon stage. On eclosion, the larvae crawl from cactroum egg-stick onto the cladode or pad and burrow into it, usually within a few centimeters of the oviposition site.

Effects of changes in atmospheric carbon dioxide on the location of host by the moth Cactoblastis cactorum. Oviposition preference and larval performance of Cactoblastis cactorum Lepidoptera: They observe that the Sterile Insect Technique SIT could be one method that may stop the moth and perhaps push back its leading edge. In some seasons they will also significantly reduce the bulk of individual tiger pear plants very rare for them to destroy the whole plant, and unless cochineal is also present, the cacto often create a bigger mess because they cause the plant to fall apart: Tracking the Cactus Moth, Cactoblastis cactorum Berg.


Cactoblastis cactorum was first introduced to Australia in from Argentina, where it was successfully used as a biological control agent for Opuntia cacti. About four pads are needed for the development of the larvae from a complete egg stick. An Immigrant biological control agent or an introduction of the nursery industry.

The larvae grow to a length of about 25mm by maturity. Larvae orangish-red with conspicuous dark spots forming transverse bands. Summary of Invasiveness Top of page The prickly pear moth Cactoblastis cactorum is a moth that preys specifically on cactus species.

Cactoblastis – biocontrol

Florida Entomologist December vol. From Wikipedia, the free encyclopedia. However, cages prevent cross-pollination and are subject to toppling over in the tropical storms and hurricanes that frequent South Florida. They favour the common prickly-pear plant, but if desperate their alternate targets may include tiger pear Opuntia aurantiacavelvet tree pear Opuntia tomentosaeven Indian fig Opuntia ficus-indica — much to the annoyance of those people who legally grow this species because of its edible fruit.

On hatching, all larvae from catcorum eggstick enter the plant at one point. Cactoblastis cactorum was introduced into Australia as a means to control introduced Opuntia cacti.

Pyralidae In North America. The biological campaign against prickly pear. The biological campaign against prickly pear.

Pyralidae In North America.