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<p><b>New page</b></p><div>[[File:Sitophilus.oryzae.7438.jpg|thumb|Sitophilus.oryzae.7438]] {{Short description|Species of beetle}}<br />
{{Taxobox<br />
| name = Rice weevil<br />
| image = Sitophilus oryzae.jpg<br />
| image_caption = Adult rice weevil<br />
| regnum = [[Animalia]]<br />
| phylum = [[Arthropoda]]<br />
| classis = [[Insecta]]<br />
| ordo = [[Coleoptera]]<br />
| familia = [[Curculionidae]]<br />
| genus = [[Sitophilus]]<br />
| species = '''''S. oryzae'''''<br />
| binomial = ''Sitophilus oryzae''<br />
| binomial_authority = ([[Carl Linnaeus|Linnaeus]], 1763)<br />
}}<br />
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The '''rice weevil''' (''Sitophilus oryzae'') is a species of [[beetle]] in the family [[Curculionidae]]. It is a major pest of [[stored grain]] and [[grain products]] worldwide. The rice weevil is known for its ability to infest and damage a wide variety of [[cereal]] grains, including [[rice]], [[wheat]], [[maize]], [[barley]], and [[sorghum]].<br />
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==Description==<br />
Adult rice weevils are small, measuring about 2-3 mm in length. They are typically reddish-brown to black in color and have four light reddish or yellowish spots on the wing covers ([[elytra]]). The [[head]] is elongated into a snout ([[rostrum]]), which is characteristic of weevils. The larvae are legless, white, and C-shaped, and they develop inside the grain kernels.<br />
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==Life Cycle==<br />
The life cycle of the rice weevil consists of four stages: [[egg]], [[larva]], [[pupa]], and [[adult]]. Female rice weevils lay their eggs inside the grain kernels. The larvae hatch and feed on the grain from within, eventually pupating and emerging as adults. The entire life cycle can be completed in about 26-32 days under optimal conditions, with multiple generations occurring each year.<br />
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==Habitat and Distribution==<br />
Rice weevils are found in [[tropical]] and [[subtropical]] regions around the world. They thrive in warm and humid environments, making them a common pest in stored grain facilities, [[granaries]], and [[food storage]] areas. They can also be found in [[households]] where grains and grain products are stored.<br />
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==Impact on Agriculture==<br />
Rice weevils cause significant damage to stored grains, leading to economic losses for farmers and food producers. Infested grains become unfit for human consumption and can lead to reduced [[germination]] rates in seeds. The presence of rice weevils can also lead to secondary infestations by other pests and [[mold]] growth.<br />
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==Control and Management==<br />
Effective control and management of rice weevils involve a combination of [[preventive measures]] and [[pest control]] techniques. These include:<br />
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* Proper sanitation and cleaning of storage areas to remove any infested grains.<br />
* Use of [[hermetic storage]] methods to create an oxygen-deprived environment that kills the weevils.<br />
* Application of [[insecticides]] and [[fumigants]] to control infestations.<br />
* Regular monitoring and inspection of stored grains to detect early signs of infestation.<br />
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==See also==<br />
* [[Grain weevil]]<br />
* [[Maize weevil]]<br />
* [[Pest control]]<br />
* [[Stored product entomology]]<br />
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==References==<br />
{{Reflist}}<br />
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[[Category:Curculionidae]]<br />
[[Category:Agricultural pest insects]]<br />
[[Category:Beetles described in 1763]]<br />
[[Category:Storage pests]]<br />
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