Nigerian Journal of Entomology最新文献

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Insecticidal Activity of Cleisthopholis patens (Benth) Engl and Diels (Annonaceae) Against the Stored Product Moth, Ephestia cautella (Walker) [Lepidoptera:Pyralidae], in Stored Cocoa [Theobroma cacao (L.)]Beans. 【关键词】可可(Theobroma cacao (L.));储存品蛾(Ephestia cautella);储存品蛾;
Nigerian Journal of Entomology Pub Date : 2009-12-20 DOI: 10.36108/nje/9002/62.0101
J. Akinneye, M. Ashamo
{"title":"Insecticidal Activity of Cleisthopholis patens (Benth) Engl and Diels (Annonaceae) Against the Stored Product Moth, Ephestia cautella (Walker) [Lepidoptera:Pyralidae], in Stored Cocoa [Theobroma cacao (L.)]Beans.","authors":"J. Akinneye, M. Ashamo","doi":"10.36108/nje/9002/62.0101","DOIUrl":"https://doi.org/10.36108/nje/9002/62.0101","url":null,"abstract":"The toxicity of powdered leaf, stem bark and root bark of “apako”, Cleisthopholis patens (Benth) Engl and Diels (Annonacea), to Ephestia cautella (Walker) was evaluated in the laboratory at 28±2°C and 75±5% RH. Four rates of each powder. 0.5, 1.0,2.0, and 3.0 g/20 g of cocoa [Theobroma cacao (L.)] beans. were tested in completely randomized design. The treatments and an untreated control were replicated three times. In another test, treated and untreated cocoa beans were infested with 30 one-day old E. cautella eggs and the numbers of hatched eggs (at day 3 post-infestation) and emerged adults (at day 40 postinfestation) were converted to percentages. Toxicity to adults generally increased with the rate of product application and duration post-treatment. At 24 h post-treatment, only the root bark caused mortality (22.8-45.3%). Mortality increased considerably thereafter reaching the peak (100%) at 72 h for 3.0 g root bark/20 g cocoa bean, and at 96 h for 2.0 g and 3.0 g stem bark. With the leaf powder. the highest mortality was 78.9% for 3.0 g/20 g cocoa bean. All parts of C. patens at 0.5-3.0 g/20 g cocoa beans completely inhibited egg hatch whereas on the untreated control the percentage of hatched eggs ranged between 73.4 and 96.7% and percentage adult emergence ranged between 60.0 and 90.0% .","PeriodicalId":183712,"journal":{"name":"Nigerian Journal of Entomology","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127466548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Life Cycle Stages of Greater Wax Moth, Galleria mellonella (L.) [Lepidoptera:Pyralidae], in Ibadan, Oyo State, Nigeria 尼日利亚奥约州伊巴丹地区大蜡蛾生命周期分期研究[鳞翅目:蜡蛾科]
Nigerian Journal of Entomology Pub Date : 2009-12-20 DOI: 10.36108/nje/9002/62.0130
O. O. Opoosun, J. A. Odebiyi
{"title":"Life Cycle Stages of Greater Wax Moth, Galleria mellonella (L.) [Lepidoptera:Pyralidae], in Ibadan, Oyo State, Nigeria","authors":"O. O. Opoosun, J. A. Odebiyi","doi":"10.36108/nje/9002/62.0130","DOIUrl":"https://doi.org/10.36108/nje/9002/62.0130","url":null,"abstract":"The life cycle stages of the greater wax moth, Galleria mellonella (L.) [Lepidoptera: Pyralidae], was studied on beeswax comb under ambient laboratory conditions of 27-29″C and 88-91 % RH. Females had an average oviposition period of 5.8 days and fecundity of 220.4 eggs, more than 50% of which were laid within the first 2 days. The mean duration of each developmental stage was: egg, 9.5 days; 1st instar, 4.3 days; 2nd ins tar, 3.9 days; 3rd instal’, 2.9 days; 4th instal’, 2.7 days; 5th instal’, 2.8 days; 6th instar, 3.4 days; 7th instar, 2.7 days; and pupa 25.4 days. The average growth rate for the larvae was 1.49. The total life cycle period averaged 57.6 days with a range from 46-69 days. The sex-ratio was 1:4 in favour of females. The average post-oviposition period was 3.1 days and longevity of adult was 10.6 days for mated females and 11.1 days for mated males. Average adult male wingspan was 27.35mm and that of the female was 34.81 mm.","PeriodicalId":183712,"journal":{"name":"Nigerian Journal of Entomology","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120937843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Evaluation of Hemocyte Cells in Zonocerus variegatus (L.) During Postembryonic Development 变异带绦虫血细胞的鉴定在胚胎后发育期间
Nigerian Journal of Entomology Pub Date : 2009-12-20 DOI: 10.36108/nje/9002/62.0180
K. Ademolu, A. B. Idowu, G. O. Olatunde
{"title":"Evaluation of Hemocyte Cells in Zonocerus variegatus (L.) During Postembryonic Development","authors":"K. Ademolu, A. B. Idowu, G. O. Olatunde","doi":"10.36108/nje/9002/62.0180","DOIUrl":"https://doi.org/10.36108/nje/9002/62.0180","url":null,"abstract":"The types and number of hemocyte cells present in Zonocerus variegatus (L.) during post-embryonic development were evaluated with the aid of hemacytometer. Six hemocyte cells, namely, Adipohaemocytes (ADS), Granulocytes (GRS), Oenocytes (OES), Plasmatocytes (PLS), Prohaemocytes (PRS), and Sphcrulocytes (SPS) were found in the haemolymph of the nymphs and adults. However, OES was not present in the 1st instar nymph. PLS had the highest hemocyte count (59.90 x 10’per ml of haemolymph) and OES had the least (21.01 x 10′ per ml). The adult stage had significantly (P<0.05) higher hemocyte count (62.75 x 105 per ml) than the nymphal instars (14.0-48.75 x 10 however. the differences between the 1st and the 2nd instars as well as the differences among the 4th– 6th instars were not significant (P>0.05).","PeriodicalId":183712,"journal":{"name":"Nigerian Journal of Entomology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117152116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of Different Diets for Rearing Cocoa Moth, Ephestia cautella (Walker) [Lepidoptera: Pyralidae ]. 不同饲料对可可蛾(Ephestia cautella Walker)饲养效果的评价[鳞翅目:蚜科]。
Nigerian Journal of Entomology Pub Date : 2009-12-20 DOI: 10.36108/nje/9002/62.0140
J. Akinneye, M. Ashamo
{"title":"Evaluation of Different Diets for Rearing Cocoa Moth, Ephestia cautella (Walker) [Lepidoptera: Pyralidae ].","authors":"J. Akinneye, M. Ashamo","doi":"10.36108/nje/9002/62.0140","DOIUrl":"https://doi.org/10.36108/nje/9002/62.0140","url":null,"abstract":"The study was conducted in the laboratory at 282″C and 755% RH to evaluate different diets for rearing cocoa moth, Ephestia cautella (Walker). so as to facilitate mass production of the insect for biological study. The diets were: (A) cocoa powder (100%). (B) wheat flour (100%). (C) wheat germ ( 100%). (D) cocoa powder + yeast (90: 10). (E) wheat germ yeast (90:10). (F) cocoa powder + wheat Dour (50:50), (G) cocoa powder + wheat germ (50:50). (II) cocoa powder+ wheat flour + glucose (45:45: 10). (1) cocoa powder+ wheat germ + yeast (45:45: 10). (.I) cocoa powder + wheat flour + honey (45:45: 10), (K) cocoa powder+ wheat germ + glucose (45:45:10). and (L) cocoa powder + wheat flour + wheat germ + glucose (30:30:30: 10). All diets permitted reasonable development of E. cautella. but diets E and H. tended to be adequate. More eggs were laid by the moths reared on diets E (266.7 eggs) and H (253.8 eggs) compared with other diets. However. the differences among diets E. C. D. H. K. and L as well as the differences among diets H. A. B. C. D. K. and L were due to random variation. Eggs from moths reared on diet H were the most viable (86.0%) while those from moths reared on diet K were the least viable (66.0%). The shortest developmental duration and the highest percentage of adult emergence were in diet L. Moths reared on diet F took 10 days longer to complete development and adult emergence was 15.0% lower. Longevity of male and female moths (mated or unmated) was influenced by the diet on which they were reared.","PeriodicalId":183712,"journal":{"name":"Nigerian Journal of Entomology","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128940720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effects of Selected Plant Materials and Pirimiphos-methyl (Actellic2% D®)on Oviposition by Callosobruchus maculatus (Fab.) [Coleoptera: Bruchidae] and on Organoleptic Properties of Treated and Stored Cowpea [Vigna unguiculata (L.)Walp.]. 精选植物材料和甲基硫磷(Actellic2% D®)对斑点斑腹小蠹产卵的影响[鞘翅目:斑腹小蠹科]及处理和贮存豇豆的感官特性[Vigna unguiculata (L.)Walp.]。
Nigerian Journal of Entomology Pub Date : 2008-12-21 DOI: 10.36108/nje/8002/52.0130
F. Ojiako, A. Adesiyun
{"title":"Effects of Selected Plant Materials and Pirimiphos-methyl (Actellic2% D®)on Oviposition by Callosobruchus maculatus (Fab.) [Coleoptera: Bruchidae] and on Organoleptic Properties of Treated and Stored Cowpea [Vigna unguiculata (L.)Walp.].","authors":"F. Ojiako, A. Adesiyun","doi":"10.36108/nje/8002/52.0130","DOIUrl":"https://doi.org/10.36108/nje/8002/52.0130","url":null,"abstract":"The effects of powdered leaves of siam weed, Chromolaena odorata (L.) King and Robinson; lemon grass, Cymbopogon citratus (DC.) Staph; pitanga cherry, Eugenia uniflora L.; mango, Mangifera indica L.; bitter gourd, Mormodica charantia L. and basil, Ocimum gratissimum L;seeds of horse radish, Moringa ole ifera Lam., and brown pepper, Piper guineense Schum and Thonn; and barks of cashew, Anacardium occidentale L. and mahogany, Khaya senegalensis (Desr.) A. Juss., on oviposition by cowpea seed bruchid, C. maeulatus (Fab.) and on the organoleptic properties of treated cowpea [Vigna unguiculata (L.) Walp.] seeds were evaluated under ambient laboratory condition. A pirimiphos-methyl (Actellic 2%D®) treatment and an untreated control were included for comparison. The plant materials were tested at the rates of 2.5, 5.0 and 10.0 g/100 g while pirimiphos-methyl was tested at 1.0, 2.0 and 3.0 g!l 00 g seeds of cowpea in a factorial experiment. The number of eggs laid and the number of seeds with eggs were counted in a random sample of 10 seeds at day 7 postinfestation. The untreated control had 2.9-8.2 eggs/seed and 9.7-10.0 infested seeds over the 6 months storage. Relative to this, 1.0 g pirimiphos-methyl/100 g seed (with 0.2-0.7egg/seed and 1.0-5.7 infested seeds), 5.0 g seed powder of P guineense/l00 g seed (with 0.3-1.6 eggs/seed and 2.0 7.7 infested seeds) and M. oleifera /100g seed (with 0.7-2.3 eggs/seed and 4.0-8.3 infested seeds) caused significant (P<0.05) reductions. O. gratissimum (with 1.5-5.4 eggs/seed and 5.0-S.7 infested seeds) was effective only at the high rate of 10 g/ 100 g seed. The plant products and pirimiphos-methyl had no significant effect on organoleptic characteristics of the treated and stored cowpea seeds.","PeriodicalId":183712,"journal":{"name":"Nigerian Journal of Entomology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116670257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of Immature Stages of Two Flesh Flies, Sarcophaga nodosa (Enge1.) and S. exuberans (Pandelle) [Diptera: Sarcophagidae), From Uyo, South-eastern Nigeria. 尼日利亚东南部乌约两种肉蝇的幼期研究:结节Sarcophaga nodosa (Enge1.)和旺盛S. exuberans (Pandelle)[双翅目:石蛉科]。
Nigerian Journal of Entomology Pub Date : 2008-12-21 DOI: 10.36108/nje/8002/52.0150
M. Ekanem, M. C. Dike
{"title":"Study of Immature Stages of Two Flesh Flies, Sarcophaga nodosa (Enge1.) and S. exuberans (Pandelle) [Diptera: Sarcophagidae), From Uyo, South-eastern Nigeria.","authors":"M. Ekanem, M. C. Dike","doi":"10.36108/nje/8002/52.0150","DOIUrl":"https://doi.org/10.36108/nje/8002/52.0150","url":null,"abstract":"Two sarcophagid flies, Sarccophaga nodosa (Engel), and S. exuberans (Pandelle), which breed in animal carcases in Uyo, South-eastern Nigeria, were reared on beef through three generations in the laboratory. Mean developmental durations from larviposition to adult emergence were 30.3 ±1.3 days for S. nodosa and 15.5 ± 2 days for S. exuberans. The larvae and pupae of the two species were described and a key to the larval instars provided.","PeriodicalId":183712,"journal":{"name":"Nigerian Journal of Entomology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122272491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ability of Sitophilus zeamais Motschulsky [Coleoptera: Curculionidae] From Four Locations in Nigeria to Infest and Damage Three Varieties of Maize, Zea mays L. 尼日利亚4个地点玉米象对3个玉米品种的侵染能力[鞘翅目:玉米象科]。
Nigerian Journal of Entomology Pub Date : 2008-12-21 DOI: 10.36108/nje/8002/52.0140
T. Ofuya, J. E. Idoko, L. A. Akinwete
{"title":"Ability of Sitophilus zeamais Motschulsky [Coleoptera: Curculionidae] From Four Locations in Nigeria to Infest and Damage Three Varieties of Maize, Zea mays L.","authors":"T. Ofuya, J. E. Idoko, L. A. Akinwete","doi":"10.36108/nje/8002/52.0140","DOIUrl":"https://doi.org/10.36108/nje/8002/52.0140","url":null,"abstract":"Ability of Sitophilus zeamais Motschulsky obtained from four different locations in Nigeria to infest and damage three varieties of maize, Zea mays L., was investigated under ambient laboratory conditions in Akure, Nigeria. Post-infestation adult mortality, FJ progeny emergence, grain perforation, and weight loss in infested maize were assessed. The maize variety TZMl 205, previously reported to be highly resistant to infestation and damage by S. zeamais from Akure, was observed to be similarly resistant to weevil populations from Port Harcourt, Kaduna and Maiduguri. There may be variation among populations of S. zeamais in Nigeria with respect to their ability to damage resistant maize varieties.","PeriodicalId":183712,"journal":{"name":"Nigerian Journal of Entomology","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125329730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Efficacy of Cow Bone Charcoal Dust in the Management ofthe Maize Weevil, Sitophilus zeamais Motsch. [Coleoptera: Curculionidae], and the Lesser Grain Borer, Rhyzopertha dominica Fab. [Coleoptera: Bostrichidae)), Infesting Stored Maize (Zea mays L.)Grains. 牛骨炭粉防治玉米象甲的效果研究。[鞘翅目:蛾科]和小纹螟,纹螟。[鞘翅目:蝽科]),贮藏玉米(Zea mays L.)籽粒害虫。
Nigerian Journal of Entomology Pub Date : 2008-12-21 DOI: 10.36108/nje/8002/52.0120
S. I. Nwaubani, J. Fasoranti
{"title":"Efficacy of Cow Bone Charcoal Dust in the Management ofthe Maize Weevil, Sitophilus zeamais Motsch. [Coleoptera: Curculionidae], and the Lesser Grain Borer, Rhyzopertha dominica Fab. [Coleoptera: Bostrichidae)), Infesting Stored Maize (Zea mays L.)Grains.","authors":"S. I. Nwaubani, J. Fasoranti","doi":"10.36108/nje/8002/52.0120","DOIUrl":"https://doi.org/10.36108/nje/8002/52.0120","url":null,"abstract":"Dry bones (femur and ribs) of the African humped cow, Bos indicus (L.), were burnt with wood fire and the resulting charcoal was manually ground and sieved to produce the fine inert cow bone charcoal dust (CBCD) that was admixed-with maize (Zea mays L.) grains at the rates of 0.1 ,0.25,0.5, 1.0,2.0,4.0, and 8.0 g /100 g of grain. Adults of Sitophilus zeamais Motsch. and Rhyzopertha dominica Fab. were exposed to the treated grain and mortality was recorded at 2, 4, 6, and 8 days post-infestation. The study was conducted under ambient conditions (28.5-32.5°C and 50-62 % RH) in the laboratory. For both species, mortality increased significantly (P<0.05) with application rate and exposure interval. CBCD significantly (P<O.01) suppressed F, progeny production and repelled adults from treated grain. Complete inhibition of S. zeamais progeny emergence was achieved with ~ 0.25 g CBCD /100g of grain from the 4th through to the 12th month of storage at ambient laboratory conditions of 23.5- 33°C and 63.5-87.5 % RH. Test with R. dominica gave similar results when 100 g grains were treated with ~ 0.5 g CBCD. The regression of mortality (probit) on rate of application (log) indicated that R. dominica was less susceptible to CBCD than S. zeamais. CBCD appears to have a potential in the management of insect pests of stored grains.","PeriodicalId":183712,"journal":{"name":"Nigerian Journal of Entomology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128008104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Tobit Analysis of Acceptability of Natural Plant Products for Control of Crop Pests in Northern Nigeria 尼日利亚北部天然植物产品防治作物有害生物可接受性的Tobit分析
Nigerian Journal of Entomology Pub Date : 2008-12-21 DOI: 10.36108/nje/8002/52.0111
F. Ajayi, S. A. Rahman
{"title":"Tobit Analysis of Acceptability of Natural Plant Products for Control of Crop Pests in Northern Nigeria","authors":"F. Ajayi, S. A. Rahman","doi":"10.36108/nje/8002/52.0111","DOIUrl":"https://doi.org/10.36108/nje/8002/52.0111","url":null,"abstract":"This study was conducted to test the hypothesis that perceptions of attributes of phytochemicals significantly influence their adoption for crop pest control by farmers in northern Nigeria. Primary data were collected from 560 farmers across seven States in 2007 and subjected to analysis using Tobit model. The results showed that among farmers’ specific factors, farming experience (b=0.91) and pest problem (b=0.48) significantly (P=0.05) influenced acceptance of plant-derived insecticide. Among plant product attributes, effectiveness (b=0.46), safety (b=0.43), and cheapness (b=0.42) influenced acceptance. It implies that further research to improve these attributes will enhance acceptance and use intensity of plant products for pest control.","PeriodicalId":183712,"journal":{"name":"Nigerian Journal of Entomology","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115768602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Laboratory Evaluation of the Toxic and Repellent Effects of Three Edible Oils on Cowpea Bruchid, Callosobruchus maculatus (F.) [Coleoptera: Bruchidae]. 三种食用油对豇豆野田鼠毒避效果的室内评价[鞘翅目:野田鼠科]。
Nigerian Journal of Entomology Pub Date : 2008-12-21 DOI: 10.36108/nje/8002/52.0121
F. A. Ajayi, D. A. Anda
{"title":"Laboratory Evaluation of the Toxic and Repellent Effects of Three Edible Oils on Cowpea Bruchid, Callosobruchus maculatus (F.) [Coleoptera: Bruchidae].","authors":"F. A. Ajayi, D. A. Anda","doi":"10.36108/nje/8002/52.0121","DOIUrl":"https://doi.org/10.36108/nje/8002/52.0121","url":null,"abstract":"Toxicity and repellency of the oil extracted from benniseed (Sesamum indicum L.), olive (Olea europaea L.), and horseradish (Moringa oleifera Lam.) were evaluated in the laboratory on cowpea bruchid, Callosobruehus maeulatus (F.), at 28- 31°C and 41-72% RH. The tests were laid in completely randomized design with four replications per treatment. The rates of oil tested for toxicity were 0 (control), 0.10,0.20,0.30,0.40 and 0.50 g/10 g cowpea seeds. The repellency test was conducted in Petri dish containing treated and untreated Whatman No.1 filter paper; the rates of oil tested were 0 (control), 0.5, 1.0, 1.5 and 2.0 g/30 cm”. LC50 was calculated from probit analysis of toxicity data while repellency data were analyzed with GENSAT 2005 programme. The oil from each of benniseed, olive, and horseradish caused significantly higher (P<0.05) mortality to C maculatus adults at 24 h post-treatment compared to the control treatment; the olive oil was the most potent ( LC50 of 0.125 g/10 g seed) and benniseed oil the least potent (LC50 of 0.279 g/ 10 g seed). At the highest rate of application, the three oils evoked Class V repellency (81.0% for horseradish; 81.0% for olive, and 91.8% for benniseed). The toxicity and repellent effects of the oils imply that stored cowpea seeds can be adequately protected against C. maculatus.","PeriodicalId":183712,"journal":{"name":"Nigerian Journal of Entomology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127714942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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