Colorado potato beetle


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Colorado potato beetle:

see potato beetlepotato beetle,
name for two beetles of the leaf beetle family and for two of the blister beetle family, all destructive to the potato plant and its relatives. Most notorious is the Colorado potato beetle, or potato bug (Leptinotarsa decemlineata
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Colorado Potato Beetle

 

(Leptinotarsa decemlineata), an insect of the family Chrysomelidae, a dangerous quarantine pest of potatoes and other Solanaceae crops. The body is 9–11 mm long, oval, and yellow; each elytron has five black stripes; the wings are bright pink; the pronotum has black spots, of which the central one is V-shaped. The shiny light orange egg is oval and 2.4 mm long. The brick-red larva may reach 15 mm in length and has two black points along the sides of each segment except the first thoracic.

The Colorado potato beetle is native to North America. In Europe it first appeared in France in 1922 and subsequently spread to almost all countries. In the USSR it is distributed in Byelorussia, Latvia, Lithuania, Moldavia, the Ukraine, and the RSFSR. There are one or two generations a year. Adult beetles winter in the soil. Most surface in May and June, but some remain in diapause until spring.

The beetles eat leaves. They lay their eggs on the undersides of leaves of potato shoots, in groups of 15–20. A beetle may yield up to 3,000 eggs. Larvae in the first instar chew out the flesh of the leaf from below, and in the second instar, destroy all the flesh, leaving only the thick inner veins. The most voracious are larvae in the fourth instar, which pupate in the soil at the level of the plowed layer. In hot summer weather and in autumn before they hibernate, the beetles are capable of migrations of 40–300 km.

The Colorado potato beetle is an extremely flexible species that can survive various ecological conditions. It represents a particular threat to the USSR, because it can easily acclimatize and reproduce in all the principal regions of potato cultivation. Control measures include quarantine (plant quarantine) and treatment of plants with insecticides and insecticides mixed with micro-biological preparations when the larvae of the second in-star appear and when the beetles are hatching.

REFERENCES

Koloradskiizhuk i mery bor’bysnim, collections 1–2. Moscow, 1955–58. Iakovlev, B. V. Koloradskii kartofel’nyi zhuk. Riga, 1960.
Ekologiia ifiziologiia diapauzy koloradskogo zhuka: Sb. Moscow, 1966.

B. V. IAKOVLEV

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Activity of the M-One formulation of a new strain of Bacillus thuringiensis against the Colorado potato beetle (Coleoptera: Chrysomelidae): relationship between susceptibility and insect life stage.
Masking of host plant odour in the olfactory orientation of the Colorado potato beetle. Entomologia Experimentalis et Applicata 41:165-172.
Attaching electrodes to the tips of Colorado potato beetles' antennae led ARS scientists at the Vegetable Laboratory in Beltsville, Md., to discover chemical scents that attract the pests.
These genetically engineered foods have been approved in Canada at least since 1994: insectresistant corn, high oleic acid canola, Glufosinate tolerant corn, Glyphosate Tolerant canola, Colorado Potato Beetle resistant potato etc.
Bt, a bacterial toxin meant to kill off the Colorado potato beetle, one of the potato's commonplace enemies in the growing fields of big agriculture.
For instance, says Cull, it is possible that hemp may be able to help farmers control the devastating Colorado Potato Beetle. Researchers in the Tamapol region of the Ukraine found that when hemp was grown around a potato plot, the potato plants nearest the hemp plants were free from CPB infestation, whereas the others became heavily infested.
The EPA formally cleared the way in 1995 for production of a genetically altered NewLeaf Russet Burbank potato that repels the Colorado potato beetle. Earlier, the FDA and the USDA agreed that the NewLeaf potato from Monsanto Co.
One of its areas of interest and expertise has been inserting assistance to the grower against the Colorado potato beetle, an insect who didn't learn its geography very well, and has become a pest in lots of places besides Colorado, in some areas knocking yield by as much as 85 percent.
Recently, the USDA approved the company's proposal to market genetically engineered Russet Burbank potatoes, which resist the Colorado potato beetle.
Large, an employee of the Ministry of Agriculture, paid tribute to the Colorado potato beetle. The latter, he maintained.
Though mulch may attract voles, which nibble the tubers, it does help keep the soil moist--a good defense against another important pest, the Colorado potato beetle. Reduce the beetle population by rotating your potato crop; laying spun-bonded polyester row covers over your potatoes after planting; and picking off any eggs, larvae and winged adults.

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