WordNet
- small brown moth whose larvae bore into flowers and bolls of cotton
- type genus of the Gelechiidae: pink bollworms (同)genus Gelechia
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/12/09 02:38:53」(JST)
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| Pink Bollworm |
|
| Scientific classification |
| Kingdom: |
Animalia |
| Phylum: |
Arthropoda |
| Class: |
Insecta |
| Order: |
Lepidoptera |
| Family: |
Gelechiidae |
| Genus: |
Pectinophora |
| Species: |
P. gossypiella |
| Binomial name |
Pectinophora gossypiella
(Saunders, 1844) |
| Synonyms |
- Depressaria gossypiella Saunders, 1844
- Gelechia gossypiella
- Platyedra gossypiella
- Gelechia umbripennis Walsingham, 1885
|
The pink bollworm (Pectinophora gossypiella), Spanish: lagarta rosada, is an insect known for being a pest in cotton farming. The adult is a small, thin, gray moth with fringed wings. The larva is a dull white, eight-legged caterpillar with conspicuous pink banding along its dorsum. The larva reaches one half inch in length.
The pink bollworm is native to Asia, but has become an invasive species in most of the world's cotton-growing regions. It reached the cotton belt in the southern United States by the 1920s. It is a major pest in the cotton fields of the southern California deserts.
The female moth lays eggs in a cotton boll, and when the larvae emerge from the eggs, they inflict damage through feeding. They chew through the cotton lint to feed on the seeds. Since cotton is used for both fiber and seed oil, the damage is twofold. Their disruption of the protective tissue around the boll is a portal of entry for other insects and fungi.
In parts of India, the pink bollworm is now resistant to first generation transgenic Bt cotton (Bollgard cotton) that expresses a single Bt gene (Cry1Ac).[1] Monsanto has admitted that this variety is ineffective against the pink bollworm pest in parts of Gujarat, India.[2] Infestation on susceptible cotton is generally controlled with insecticides. Once a crop has been harvested, the field is plowed under as soon as possible to stop the life cycle of the new generation of bollworm. Unharvested bolls harbor the larvae, so these are destroyed. The plants are plowed into the earth and the fields are irrigated liberally to drown out remaining pests. Some farmers burn the stubble after harvest. Surviving bollworms will overwinter in the field and reinfest the following season. Populations of bollworms are also controlled with mating disruption, chemicals and releases of sterile males which mate with the females but fail to fertilize their eggs.
- ^ Bagla, P. (2010). "Hardy Cotton-Munching Pests Are Latest Blow to GM Crops". Science 327 (5972): 1439–1439. Bibcode:2010Sci...327.1439B. doi:10.1126/science.327.5972.1439. PMID 20299559.
- ^ http://www.thehindu.com/news/national/article183353.ece
General reference
- New Standard Encyclopedia, © 1990 Chicago, Illinois
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Wikimedia Commons has media related to Pectinophora gossypiella. |
External links
- Pink bollworm IPM
- Species Profile- Pink Bollworm (Pectinophora gossypiella), National Invasive Species Information Center, United States National Agricultural Library. Lists general information and resources for Pink Bollworm.
Related Links
- Thesaurus Antonyms Related Words Synonyms Legend: Noun 1. Gelechia gossypiella - larvae of a gelechiid moth introduced from Asia; feeds on the seeds of cotton bolls pink bollworm family Gelechiidae, Gelechiidae - important ...
- Definition of Gelechia gossypiella in the AudioEnglish.org Dictionary. Meaning of Gelechia gossypiella. What does Gelechia gossypiella mean? Proper usage of the word Gelechia gossypiella. Information about Gelechia gossypiella in ...
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