| 释义 |
boll weevil
boll weeviln.1. A small gray or brown weevil (Anthonomus grandis) of southern North America and Central America that damages cotton crops by laying eggs in and feeding on buds and bolls.2. Informal A conservative white Southern Democrat in the US House of Representatives, especially during the second half of the 20th century.boll weevil n (Animals) a greyish weevil, Anthonomus grandis, of the southern US and Mexico, whose larvae live in and destroy cotton bolls. See also weevil1 boll′ wee′vil
n. a snout beetle, Anthonomus grandis, that attacks the bolls of cotton. [1890–95, Amer.] boll weevil - From Old English wifel, "beetle," and boll, the pod of the cotton plant, which this beetle attacks.See also related terms for pod.Thesaurus| Noun | 1. |  boll weevil - greyish weevil that lays its eggs in cotton bolls destroying the cottonAnthonomus grandisweevil - any of several families of mostly small beetles that feed on plants and plant products; especially snout beetles and seed beetlesAnthonomus, genus Anthonomus - weevils destructive of cultivated plants |
Translationsboll weevil
boll weevil or cotton boll weevil (bōl), cotton-eating weevilweevil,
common name for certain beetles of the snout beetle family (Curculionidae), small, usually dull-colored, hard-bodied insects. The mouthparts of snout beetles are modified into down-curved snouts, or beaks, adapted for boring into plants; the jaws are at the end of the
..... Click the link for more information. , or snout beetle, Anthonomus grandis. Probably of Mexican or Central American origin, it appeared in Texas about 1892 and spread to most cotton-growing regions of the United States. Over the years the weevil became a significant pest, destroying about 8% of the annual U.S. cotton crop. Boll weevil devastation was a major reason for diversification of the South's historic cotton economy. In 1978, however, the U.S. Dept. of Agriculture began a concerted eradication campaign. By the end of the century the weevil had disappeared from from most of the nation except Texas, Louisiana, and Mississippi, where the campaign continued. The young adult is grayish, darkening with age, and about 1-4 in. (6 mm) long, with a long snout for boring into the cotton boll, or seed pod, where weevils feed on the cotton fibers. Weevils may also invade cotton flower buds before they mature into bolls. Females lay eggs within the bud or the boll, where pupation (see insectinsect,
invertebrate animal of the class Insecta of the phylum Arthropoda. Like other arthropods, an insect has a hard outer covering, or exoskeleton, a segmented body, and jointed legs. Adult insects typically have wings and are the only flying invertebrates.
..... Click the link for more information. ) occurs. The larvae eat the entire contents of the boll. Metamorphosis from egg to adult takes about three weeks; from 2 to 10 generations occur each season. The weevil's resistance to some poisons, and the removal of some poisons from the market, have encouraged Integrated Pest ManagementIntegrated Pest Management
(IPM), planned program that coordinates economically and environmentally acceptable methods of pest control with the judicious and minimal use of toxic pesticides.
..... Click the link for more information. , e.g., the use of safer insecticides, synthetic growth regulators, and pheromone traps, and the release of sterile males to frustrate reproduction. Adults are also controlled by elimination of field litter, especially cotton stalks, in which they overwinter. Short-season cotton, bred to mature early, escapes much damage from weevil larvae. The boll weevil is classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
..... Click the link for more information. , class Insecta, order Coleoptera, family Curculionidae. Bibliography See P. P. Sikorowski et al., Boll Weevil Mass Rearing Technology (1984); G. Matthews and J. Tunstall, Insect Pests of Cotton (1992). boll weevil[′bōl ‚wē·vəl] (invertebrate zoology) A beetle, Anthonomus grandis, of the order Coleoptera; larvae destroy cotton plants and are the most important pests in agriculture. boll weevil
Synonyms for boll weevilnoun greyish weevil that lays its eggs in cotton bolls destroying the cottonSynonymsRelated Words- weevil
- Anthonomus
- genus Anthonomus
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