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.
|Published (Last):||16 July 2004|
|PDF File Size:||3.13 Mb|
|ePub File Size:||6.83 Mb|
|Price:||Free* [*Free Regsitration Required]|
Cactoblastis cactorum – Wikipedia
Global Invasive Species Database Species profile: Journal of the Professional Association for Cactus Development 2: Larvae will typically spend two months within the host cactus during the summer, and approximately four months during the winter.
In other projects Wikimedia Commons. Efforts to control this invasive species have been focused on containing the spread via quarantine, as well as development of cactorkm, bacterial, parasitoid, and nematode biological control agents.
When the male responds, the mating process is initiated. It has been introduced in various locations around the globe to provide biological control of invasive cacti species and has proved itself as a successful biocontrol agent in Australia, South Africa and some Caribbean islands.
The gregarious larvae bore into the pads or cladodes, devouring them from the inside. Geographic patterns of genetic diversity from the native range of Cactoblastis cactorum Berg support the documented history of invasion and multiple introductions for invasive populations. The larvae of Cactoblastis cactorum are bright orange-red with large dark spots forming transverse bands.
Cactoblastis – biocontrol
The female is much larger than the male. Females of Cactoblastis cactorum have a wingspan of mm, whilst the males wingspan is slightly smaller mm. Larvae dirty-white to bluish-purple with smaller dark spots not forming transverse bands. Reproduction Oviposition is normally at dusk or early dawn and may be responding to CO2 concentrations around pads Stange, ; Stange et al In South Africa Robertson has documented predation of C.
Cacttoblastis larvae grow to a length of about 25mm by maturity. Cactoblastis cactorumthe cactus mothSouth American cactus moth or nopal mothis native to ArgentinaParaguayUruguay and cactoblasstis Brazil.
Florida Entomologist 85 3: No satisfactory method of chemical control of Cactoblastis cactorum is known. Adult moths emerge from cocoons to disperse into cactoboastis areas and repeat the reproductive process.
Effects of changes in atmospheric carbon dioxide on the location of host by the moth Cactoblastis cactorum. Vigueras AL, Portillo L. Pupation occasionally occurs in the cladode.
The rear margins of the hindwings are whitish, and semitransparent; and the antennae and legs are long. The Cactus moth has been observed in Brazoria County, Texas. The number of eggs in a stick varies greatly but the average contain from eggs.
Cactoblastis cactorum Berg Insecta: Rumatha glaucatella Hulst cactoeum. The larvae feed inside the cactus and eventually hollow cactoblastie the cactus pad, eventually consuming everything but the vascular tissues.
More studies need to be done both to understand the biological mechanisms of the moth and to halt its spread as an invasive species. Current Location The highly specialized diet of Cactoblastis cactorum limits its habitat and distribution to coincide with that of cactoruj food source, prickly pear cacti of genus Opuntia.
The devastating affect of Cactoblastis cactorum on cactus growth is well known. Larvae solitary, not reddish or bluish-purple, feeding in or on cladodes. This wasp was misidentified as A. When it is their time, they actually leave the plant and find shelter under loose bark, dead leaves or other rubbish at or near the base of the plant. Cactoblastis cactorum in the Florida Keys may have been the result of the moth naturally dispersing across the Caribbean, or it may have been introduced unintentionally on horticultural prickly pear cacti imported into Florida Solis et al.
Texas Invasive Species Institute
Larvae do not perform well on Opuntia cladodes with a tough skin, such as Opuntia engelmannii variety lindheimeri and Opuntia macrocentra. Cactus pad dissected to show larvae of cactus moth, Cactoblastis cactorum Bergfeeding within. Cactoblasts Chumbo Harrisia portoricensis. Especies invasoras – Insectos. 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. PyralidaeUnder Laboratory Conditions”.
Crude methods such as these are being used in Louisiana to eliminate the presence of the moth in swampy areas and generally involve the heavy use of removal by chainsaw, hacksaw, or other mechanical chopping device.
cactus moth – Cactoblastis cactorum (Berg)
Mature larvae are 25 to 30 mm long. The frass from the moth is visible in the left fresh frass and mucilage oozing from holes in the cladode and middle photos dried frass.
In fact, the town of Dalby in Queensland, Australia erected a monument in dedicated to Cactoblastis cactorum for saving the people of Queensland from the scourge of invasive prickly pear cactus.