The adults are usually between 3 and 4.6 mm long, with a long snout. Sitophilus zeamais (maize weevil) is a field and storage pest of maize of economic importance in several parts of Africa. A laboratory experiment was done to Folia Entomologica Mexicio. IJEN Screening of some Maize Varieties for Resistance against the Maize weevils, Sitophilus zeamais (Motsch, Yield and agronomic performance of maize hybrids resistant to the maize weevil Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), Susceptibility of sorghum varieties to the maize weevil Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae, Resistance of selected Mozambican local and improved maize genotypes to maize weevil, Sitophilus zeamais (Motschulsky, Response of provitamin-A maize germplasm to storage weevil Sitophilus zeamais (Motschulsky). Introduction Insect pests cause significant loss of maize in the developing world reducing the 4.9 t/ha world average grain yield production to 1.5 t/ha average in Sub Saharan Africa [1]. Derera et al. in stored sorghum grains. The data from the storage experiment were collected using a total number of 12 Sitophilus zeamais was collected from infested rice obtained from a local market and reared on rice grain in glass jars covered with nylon mesh, held with a rubber band for the passage of air at 28±2oC and 70-80% relative humidity (r.h.). infestation on survival and development of the insects in stored cowpea and maize seeds respectively. Chemical pesticides such as development of Sitophilus zeamais Motsch. Stored products of agricultural and animal origin are attacked by > 600 species of beetle pests causing quantitative and qualitative losses . Their temperate counterpart is Sitophilus granarius . 1. Likhayo PW, Hodges RJ, 2000. Sitophilus zeamais cathepsin L is present in several tissues including alimentary organs and genital cells. Abstract Contact and fumigant toxicities and antifeedant activity of the essential oil of cardamom, Elletaria cardamomum , to two stored-product insects, Sitophilus zeamais and Tribolium castaneum , were investigated. It can be found in numerous tropical areas around the world, and in the United States, and is a major pest of maize. You are currently offline. (2013) Differential resistance of maize varieties to maize weevil (Sitophilus zeamais Motschulsky) (Coleoptera: Curculionidae) under laboratory conditions. The presence of S. zeamais causes damages by strong weight reduction, depreciation of commercial value of the product and reduction of its nutritional value (Pacheco and Paula, 1995). In our country, post-harvest losses in Maize due to insect pests are particularly high and were reported to the extent of 20 per cent of the total harvest in coastal areas (Mookherjee et al., 1968). Both adults and larvaefeed on internally on maize grains and an infestation can start in the field (when the cob is still on the plant) but most damage occurs in storage. Concentration-mortality regression lines were estimated to compare the resistance ratios for each insecticide and strain. Controlling of the pest by use of synthetic pesticides is raising serious concern on the environmental safety and consumer health hazards. 1994). The maize weevil,Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), is one of the most destructive pests of stored cereals. Plant powders prepared from five plant species were tested under constant conditions at 30 ± 2℃ and 60 - 65% r. h. for their ability to protect sorghum grains against Sitophilus zeamais in storage. The work described here seeks to establish whether changes in VGSC of S.zeamais can explain pyrethroid resistance. Temitope OO (2014) Evaluation of the powder of three medicinal botanicals in the control of, Sitophilus zeamais … The maize weevil is found in all warm and tropical parts of the world. The LC50 values based on bioassay studies indicated that among the test insecticides, deltamethrin exhibited greater toxicity both at … J. Biotechnol.BHQP-542 is a hybrid, quality protein maize variety. Sorry, preview is currently unavailable. Longstaff BC, 1981. Smaller holdings and infrastructural bottlenecks limit the application of modern technologies in the…, The potential for using entomopathogenic nematodes and fungi in the management of the maize weevil, Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae), Management of Maize Weevil (Sitophilus zeamais) Using Different Grain Protectants, Persistence of insect growth regulators against the rice weevil,sitophilus oryzae, in grain commodities, Annual report of the Central plant Protection Institute , Hyderabad , 1972 - 1973, Isolation and structure of Neoannoin a novel insecticidial compound from the series of A, Studies on the parad tablets for the control of stored grain insect pests, Studies on the pre-storage treatment on development of angoumoiis grain moth (Sitotroga cerealella oliver) in paddy, Evaluation of technical and non-technical methods to control Spodoptera frugiperda and Spodoptera and Sitophilus zeamais in Lachontapatobasea, Report of the F A O global survey of pesticide susceptibility of stored grain pests, F A O Plant protection J and Protection series NO 5 F A O, Rome, Annual report of the Central plant Protection Institute, Effect of fungicide thiram on Sitophilus oryzae Mysore, International Journal of Current Microbiology and Applied Sciences, Report of the F A O global survey of pesticide susceptibility of stored grain pests , F A O Plant protection J and Protection series NO 5 F A O, Mexico. Use of insecticides is considered most effective in controlling S. zeamais in storage. You can download the paper by clicking the button above. Abstract: Sitophilus zeamais Motschulsky is the most important insect pest of stored maize in tropical regions. Bioassay on efficacy of Methanol and Diethyl ether extract of Eucalyptus sp leaf was carried out with 4 treatment concentrations of 0.2%, 0.4%, 0.8% and 1.2% dissolved in acetone at 0.5 g/L of The S. zeamais homologue of the Drosophila para VGSC was identified using degenerate primers and sequenced. S. zeamais causes qualitative and quantitative damage to stored products, with grain weight loss ranging between The remaining twelve varieties were moderately resistant.Afr. The results Introduction Cereal grains are the major source of … Egg incubation, oviposition periods, and larval instar development were not differ… Description. DOI: 10.20546/IJCMAS.2017.608.299 Corpus ID: 56341726. The maize weevil, Sitophilus zeamais, is an insect pest infesting rice and corn seeds. Academia.edu no longer supports Internet Explorer. Bioassay The repellent activities of the test materials against S. zeamais were evaluated using the Sitophilure, 5-hydroxy-4-methyl-3-heptanone, was reported to be the aggregation pheromone common for S. oryzae and S. zeamais, and Levinson et al. Eleven grain protectants of diverse classes were tested for their ability in reducing the populations of Sitophilus zeamais. These results indicate that SAP1 is probably Effect of Sitophilus Zeamais (motsch. Knowledge of the life history and biology is important to the development of an integrated pest management program. weevils, Sitophilus zeamais, a major pest of stored maize in Brazil, has led to the occurrence of resistance. Three levels of infestation (1, 2 or 3 pairs) of the insects` species each were used to infest 100 g of the commodities. We identified an aspartic proteinase (AP) digesting rice glutelin in the alimentary tract of S. zeamais. Sitophilus zeamais is one of the most common and destructive storage pests in the world and damage caused by S. zeamais on stored cereal crops may be extremely high .Fumigation plays an important role in pest elimination in stored … It is a pest of stored maize, dried cassava, yam, common sorghum and wheat. permethrin were undertaken with 11 field strains of maize weevil, Sitophilus zeamais Motschulsky, collected from nine states in Mexico. For Sitophilus oryzae grain hardiness has been reported as the main resistance parameter (Bamaiyi et al., 2007).Out of the thirteen maize varieties tested against S. zeamais, only one variety, BHQP-542, was resistant. on spread of green fungus, Aspergillus section flavi, in different varieties of stored maize in laboratory in 2016. The mRNA encoding the AP (SAP1) was expressed in the larvae foregut and in the adult midgut. Introduction. The maize weevil, Sitophilus zeamais Motschulsky, is a key pest of cereal grains whose infestations start in the field before harvest and extend throughout the storage period (Oliveira et al., 2007). Sitophilus zeamais (Motschulsky), the maize weevil, is a serious pest of economic importance in stored products in tropical and subtropical countries; infestation often starts in the field, but serious damage is done during maize storage. Sitophilus oryzae and Sitophilus zeamais to aid in the management of stored-product insects. A male-produced aggregation pheromone which attracts both sexes occurs in Sitophilus spp. Sitophilus zeamais is the most weevil pests that attack stored maize. Journal of Entomology, 10: 1-12. For each insecticide, resistance ratios were A. Alie and S. Haq and Seerat un Nissa and S. Bashir and F. A. Bahar and T. Hassan and … Maize (Zea mays) one of the staple food crops of India is subjected to both quantitative and qualitative losses due to infestation by a number of insect species in field as well as in storage. The objective of this study was to determine the practicality of periodic physical disturbance on S. zeamais mortality and its adoption by smallholder farmers in developing countries. (F.) and Sitophilus zeamais Motsch. Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI. Field monitoring Sitophilus zeamais and Sitophilus oryzae (Coleoptera: Curculionidae) using refuge and flight traps baited with synthetic pheromone and cracked wheat. others. This species attacks both standing crops and stored cereal products, including wheat, rice, sorghum, oats, barley, rye, buckwheat, peas, and cottonseed. Journal of Stored Products Research, 36(4):341-353; 17 ref. Keywords Maize pest, Sitophilus zeamais, Ocimum suave, Repellence, Mortality, Growth inhibition 1. The weevil Sitophilus zeamais is one of the main pests in stored grains as corn, wheat, rice and sorghum, preferring the corn to ovipositor. e maize weevil, Sitophilus zeamais Motschulsky (Coleop-tera: Curculionidae), is one of the most destructive stored product pests of grains, cereals, and other processed and unprocessed stored products in sub-Saharan Africa [ ]. Luke C Nwosu, Impact of Age on the Biological Activities of Sitophilus zeamais (Coleoptera: Curculionidae) Adults on Stored Maize: Implications for Food Security and Pest Management, Journal of Economic Entomology, 10.1093/jee/toy187, 111, 5, (2454-2460), (2018). Keywords: stored-product insects, geographical strains, rice weevil, maize weevil, identification, hyperspectral imaging 1. Sitophilus zeamais which is an important species amongst the most destructive insect pests in the storage of Maize grains, the present experiment was conducted. (1990) confirmed the activity of 4S,5R sitophinone and 2S,3R-sitophilate for Sitophilus spp. The tropical species attacking stored cereals ( maize, rice, sorghum, millet and wheat) are Sitophilus zeamais and Sitophilus oryzae. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser. The maize weevil (Sitophilus zeamais Motschulsky) is one of the most serious stored product pests that cause huge losses in the tropics (Mwololo et al., 2012). Investigation was carried out on developmental biology ofS. of Sitophilus zeamais in stored maize. Twenty sorghum grains were randomly taken from each container with varying concentrations of 2.5, 5.0 and 10.0 x 104 ppm of leaf powders and methanolic, ethanolic and aqueous extracts of each of the botanicals separately 14 days after introducing the The maize weevil, known in the United States as the greater rice weevil, is a species of beetle in the family Curculionidae. zeamais on four main cereal crops, maize, rice, sorghum, and millet, under laboratory conditions. Experiments were conducted to find out the role of maize weevil, Sitophilus zeamais Motsch. The maize weevil also infests other types of stored, processed cereal products such as pasta, cassava, an The maize weevil affects the crop before harvest and multiplies further after storage (Demissie et al., 2008a). Enter the email address you signed up with and we'll email you a reset link. This study evaluated S. zeamais infestation on seven varieties of maize. )Infestation on protein contents of Stored grains of quality protein maize varieties.. Abstract. Screening of some Maize Varieties for Resistance against the Maize weevils, Sitophilus zeamais (Motsch.) This enzyme is especially distributed in the gastric caeca, oocytes, and nurse cells, suggesting that it is involved in a variety of physiological roles including food digestion [20,21] . Some features of the site may not work correctly. The grain damage caused by S. zeamais to cereal crops prompted researchers to investigate more on controlling strategies of the weevils in maize and wheat (Rugumamu, Management of Maize Weevil (Sitophilus zeamais) Using Different Grain Protectants @article{Hakeem2017ManagementOM, title={Management of Maize Weevil (Sitophilus zeamais) Using Different Grain Protectants}, author={S. A. Hakeem and R. A. Wani and B. Sitophilus zeamais is the most devastating storage pest of maize, causing serious management problem facing agriculture in developing countries (Abulude et al., 2007). (2001) reported maize loss of up to 20 - 90 % due to maize Raul Narciso C. Guedes 1 Received: 23 June 2020 / Revised: 3 September 2020 / Accepted: 22 September 2020 Folia Entomolgicia Mexicana, By clicking accept or continuing to use the site, you agree to the terms outlined in our. The effect of sitophilus zeamais infestation was evaluated on 10 maize varieties, comprising nine quality protein maize (qpm) varieties (sammaz 14, sammaz 17, sammaz 19, sammaz 32, sammaz 33, sammaz 36, sammaz 37, flint-q and dent-q) and One non-qpm … Topical application was employed for contact toxicity studies, and filter paper impregnation was used for testing fumigant action. organophosporus insecticide malathion to the maize weevil, Sitophilus zeamais Motschulsky, in an attempt to find out a safer and effective seed protectant. 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