The body color appears to be brownblack, but on close. Efficacy and safety of some plant extracts as alternatives. Curculionidae are seed parasites of cereal crops such as wheat, corn, rice, and sorghum and are important economic pest species in stored grain. Development and life history of sitophilus zeamais. Dendrogram based on the data of the total number of sitophilus oryzae adults emerged alive and dead, and grain mass consumed on rice varieties during 3 storage periods. In fact, it is the commonest pest that one encounters in all kinds of stores. The aim of the study was to investigate the insecticidal activities of different doses of plant extracts obtained from piper nigrum, carum carvi and sesamum indicum against rice weevil sitophilus oryzae l. The pupa is naked and the pupal stage lasts an average of 6 days. Introduction cereal grains are the major source of. The rice weevil sitophilus oryzae is a stored product pest which attacks several crops, including wheat, rice, and maize.
However, it is not a legal authority for statutory or regulatory purposes. Adults can damage several seeds by cutting an irregularly. The rice weevil sitophilus oryzae is a serious stored product pest which attacks several economically important crops. Eggs, larvae and pupae are all found within tunnels and chambers bored in the grain and are thus not normally seen. Rice weevil, sitophilus oryzae linnaeus is a major pest of stored grains in the tropics and subtropics. Zoological institute of russian academy of sciences. Rice weevil videos are few and far between, heres my introduction to the major stored grain pest. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Sitophilus is a genus of weevils in the tribe litosomini. The present study focuses on the variations in biology, morphology and mitochondrial cytochrome oxidase i mtcoi sequences of the two indian populations of the rice weevil sitophilus oryzae l. In an attempt to find alternative to control this insect, extracts of seven plant species bauhinia purpurea, caesalpinia gilliesii, cassia fistula, cassia senna, chrysanthemum frutescens, euonymus japonicus and thespesia populnea acutiloba were evaluated under laboratory. Selain itu daun mint yang mengandung pulegon, mentol, dan menton yang juga efektif untuk mengendalikan larva ulat peridroma saucia hubner, karena senyawa tersebut dapat menghambat nafsu makan dan pertumbuhan yang tidak normal.
Sitophilus oryzae, the rice weevil zoology for ias, ifos. Investigation was carried out on developmental biology of s. Bioefficacy of neem, mahogoni and their mixture to protect. Rice weevils are usually found in grain storage facilities or processing plants, infesting wheat, oats, rye, barley, rice, and corn. Comparative fatal effects of different treatments on the rice weevil, sitophilus oryzae l. The rice weevil is replaced by the granary weevil north of north carolina and tennessee. In korea, the classification of the sitophilus weevil group occurring in stored grains has been confused, resulting in its misidentification in most references reporting sitophilus oryzae linnaeus. Sitophilus oryzae l is the most destructive insect pest of stored maize and is widely distributed in tropical regions. Sitophilus oryzae journal of pharmacognosy and phytochemistry. Cosmopolitan, especially in the warmer parts of the world morphology. Pada kedua sayap depannya terdapat 4 bintik kuning kemerahmerahan m asingmasing sayap terdapat 2 bintik.
The combination of mechanical and biological methods was evaluated in the laboratory to assess their impact on the rice weevil sitophilus oryzae in rice. The new adult will remain in the seed for 3 to 4 days while it hardens and matures. Species oryzae wayback in 1763 it was known as calandra oryzae. Evaluation of spinetoram and spinosad for control of. An introduction to the rice weevil sitophilus oryzae. Larvae feed inside the seed and make in hollow and exit by making a circular hole on the surface. Mechanical methods comprising the conventional polishing process applied either before or after infestation, resulting in reduced nutritional quality plus the added effect of mechanical impact in the presence of the pest, biological methods.
Adults usually redbrown, dull with coarse microsculpture. Taxonomy, redescription, sitophilus oryzae, rhynchophorinae, rice weevil, stored pest. The longevity of adult males and females was 114115 and 119120 days. Bionanoparticles against sitophilus oryzae efficacy of plantmediated synthesized silver nanoparticles against sitophilus oryzae a. Characterization and selection of bacillus thuringiensis isolates effective against sitophilus oryzae najara da silva 1. Curculionidae with acoustic methods have been conducted in grain bins to assess.
Knowledge of the life history and biology is important to the development of an integrated pest management program. Insecticidal resistance of five strains of sitophilus oryzae l. Evaluation of spinetoram and spinosad for control of prostephanus truncatus, rhyzopertha dominica, sitophilus oryzae, and tribolium confusum on stored grains under laboratory tests. Sitophilus oryzae and sitophilus zeamais to aid in the management of storedproduct insects. Evaluation of resistance in some wheat cultivars to. Biology, morphology and molecular characterization of sitophilus oryzae and s. Known more commonly as the rice weevil, sitophilus oryzae is smaller than the similar sitophilus granarius, but examination under a hand lens, will show yelloworange patches on the elytra presumably, this is a common species, often found in company with s. Effects of six plant extracts on rice weevil in the stored. Biological and mechanical control of sitophilus oryzae. Curculionidae 2 grain kernel for an average of 18 days.
It is a serious pest not only of paddy and rice but almost of all cereals and their products. Cao y1, zhang c2, chen q2, li y1, qi s2, tian l1, ren y3. The larvae of both species are apodous, whitish, with brown heads, about 34 mm long. Characterization and selection of bacillus thuringiensis. Biology of the rice weevil, sitophilus oryzae linnaeus. Insecta, holometabola, coleoptera, curculionidae common names. Curculionidae, which occur on cereals as storage grain pests. The infestations were done monthly and up to 240 days after the treatment applications dat. Here, we report the distribution of rice weevil in. This is another weevil, considered a pest of stored grain products. The insecticide pirimiphos methyl pm, at rate of 8 ml c. Sitophilus zeamais motschulsky and sitophilus oryzae l. Distribution of the related weevil species sitophilus oryzae and s.
Identification of species and geographical strains of. Abdul rahuman abstract silver nanoparticles ag nps were synthesized by using aqueous leaves extracts of euphorbia prostrata as a. The data shows that the tested extracts had profound effect on suppression of the pests population. Control the most important aspect of control is location of the source of the infestation. The results of experiments conducted during the study period were discussed below. Rice weevil, greater grain weevil and lesser grain weevil. Pronotum is separated by strong constriction from bases of wings. The efficacy was evaluated at 15 and 45 days after infestation for the adults and immature forms, respectively. In order to find new strains, potentially toxic to sitophilus oryzae l.
This is primarily a pest of rice but occasionally attacks wheat, corn, jowar, flour, beans, dry fruits and biscuits. Curculionidae encompasses species of great economic importance as stored grain pests. Madushani ag12ft012 department of food science and technology faculty of agriculture university of peradeniya rice weevil 1. The maize weevil, sitophilus zeamais motschulsky coleoptera. Effects of hermetic storage on adult sitophilus oryzae l. In the present study, eighteen maize genotypes were screened for several. Curculionidae article pdf available in journal of stored products research 73. But the ease with which the life cycle is completed also depends on the type. Entomology, 2department of plant pathology, university of agricultural sciences, gkvk, bangalore 560 065 karnataka, india. Although not often found in the home, they are sometimes found infesting beans, birdseed, sunflower seeds, dried corn, and too a lesser degree macaroni and spaghetti. It has been seen that the life cycle of insect depends upon many factors such as ambient temperature, humidity, water content of the grain etc. Curculionidae, is one of the most destructive pests of stored cereals. Identification of species and geographical strains of sitophilus oryzae and sitophilus zeamais using the visiblenearinfrared hyperspectral imaging technique. Biology, morphology and molecular characterization of.
Biocontrol of acanthoscelides obtectus and sitophilus oryzae with. Curculionidae, is a primary field to store pest adedire 2001 that starts to infest the ripening maize crop in the field when the grain moisture content is still 5055%. First confirmation of the distribution of rice weevil. Some species are familiar as pests of stored food products.
Sitophilus species sitophilus oryzae name homonyms sitophilus orizae h. To evaluate the resistance of nine wheat cultivars rawal 87, chakwal 86, inqilab 91, khyber 87, sariab 92, bakhtawar, faisalabad 85, c 591 and pak 81 against sitophilus oryzae linnaeus,three tests free choice, confinement and antixenosis were conducted in the department of entomology, university of arid agriculture, rawalpindi, during 199799, using randomized complete block design with. Pdf biology, morphology and molecular characterization. The rice weevil sitophilus oryzae is universally regarded as one of the most destructive primary pests of stored cereals. These two species are the important pest of major importance and morphologically are very. The adult rice weevil can fly and is attracted to lights.
Resistance of strains of rice weevil, sitophilus oryzae. Ovarianphysiologyandagegradinginthericeweevil, sitophilus. Rice weevil sitophilus oryzae storedproduct part in the speed with which stored insects product insect populations increase. They attack wheat, corn, oats, rye, barley, sorghum, buckwheat, dried beans, cashew nuts, wild bird seed, and cereal products, especially macaroni. Morfologi dan biologi sitophilus oryzae, imago muda berwarna coklat merah dan umur tua berwama hitam. The species is originally from india, but now it is found around the world as its has been transported in grain. Rearing the maize weevil, sitophilus zeamais, on an. Rice weevil, sitophilus oryzae specialized websites. Many workers subsequently recognized that two distinct forms of the species existed, which were described as the. Seed damage effect of botanicals, their concentrations 1%, 2%, 3%. Sitophilus oryzae lesser grain weevil or rice weevil. Eggs, larvae and pupae are all found within tunnels. Sitophilus oryzae is a major stored grain pest infesting many grains in storage but rice is its main target of attack. Ab 2111 postharvest biology rice weevil sitophilus oryzae by w.
Pdf resistance of rice varieties to sitophilus oryzae. Sitophilus oryzae maize weevil sitophilus zeamais head not visible from above 18 inch long or more. However, we recently found and identified rice weevil s. It prefers warmer climates and so is more prevalent in the southern states. Distribution worldwide, but primarily temperate zone, northern distribution.