scholarly journals Persistence and insecticidal evaluation of Inert-PMS formulation on wheat stored grains against Rhyzopertha dominica, Tribolium castaneum, Cryptolestes ferrugineus and Liposcelis paeta

2016 ◽  
Vol 40 (2) ◽  
Author(s):  
Misbah Ashraf ◽  
Waqas Wakeel ◽  
Faisal Hafeez ◽  
Muhammad Farooq ◽  
Shahbaz Hussain
Keyword(s):  
Tribolium Castaneum ◽  
Rhyzopertha Dominica ◽  
Cryptolestes Ferrugineus ◽  
Stored Grains

SURVIVAL AND MULTIPLICATION OF STORED-PRODUCT BEETLES AT SIMULATED AND ACTUAL WINTER TEMPERATURES

1997 ◽  
Vol 129 (5) ◽  
pp. 887-898 ◽  
Author(s):  
P.G. Fields ◽  
N.D.G. White
Keyword(s):  
Population Dynamics ◽  
Cold Tolerance ◽  
Tribolium Castaneum ◽  
Rhyzopertha Dominica ◽  
Pest Species ◽  
Cryptolestes Ferrugineus ◽  
Winter Temperatures ◽  
Overwintering Mortality ◽  
Cold Hardy ◽  
Cryptolestes Pusillus

AbstractCryptolestes ferrugineus (Stephens), Cryptolestes pusillus (Schönherr), Tribolium castaneum (Herbst), and Rhyzopertha dominica (Fabricius) were gradually exposed to falling temperatures in the laboratory, simulating conditions in the centre of a 12- or 6-m-diameter granary containing wheat. Two years of overwintering mortality for C. ferrugineus and R. dominica were obtained from 11–13 farm granaries (40–100 t wheat). Cryptolestes ferrugineus (adults) was the most cold hardy species among the beetles tested. In the laboratory, survival was 40% at 25 °C declining to 10 °C over10 months, whereas at 25 °C declining to 0 °C over 10 months survival was 7%. Cryptolestes pusillus and T. castaneum did not survive once temperatures were below 10 °C, and R. dominica adults did not survive temperatures below 3 °C. In the field, there was no survival of C. ferrugineus in granaries that had February temperatures of −6.7 °C or lower. Six-week exposure to −10 °C killed most C. ferrugineus adults taken from granaries in February. Cryptolestes ferrugineus caught in granaries were more cold hardy than laboratory-reared strains. No T. castaneum or R. dominica survived an entire winter in granaries in the 2 years tested. Although C. pusillus was not tested in the granaries, it is unlikely it could survive the winter, as it had the same level of cold tolerance as T. castaneum in the laboratory. The implications for the population dynamics of these pest species in prairie grain are discussed.

INFESTIBILITY OF OILSEEDS, CLOVER, AND MILLET BY STORED-PRODUCT INSECTS

1972 ◽  
Vol 52 (4) ◽  
pp. 431-440 ◽  
Author(s):  
R. N. SINHA
Keyword(s):  
Tribolium Castaneum ◽  
Common Species ◽  
Western Canada ◽  
Cryptolestes Ferrugineus ◽  
Potential Danger ◽  
Complete Development ◽  
Stored Product Insects ◽  
Oryzaephilus Mercator ◽  
Insect Attack ◽  
New Pest

Infestation potential of 16 cultivars of flax, mustard, rape, sunflower, millet, and clover seeds to five common species of stored-product insects was determined. When multiplication was used as a criterion, whole seeds were resistant to insect attack although minor infestation occurred on certain cultivars. Although some species of insects could complete development on certain cultivars, few could reproduce well on clover and mustard cultivars. Oilseeds were more susceptible to Oryzaephilus mercator than to any other insect species. Cryptolestes ferrugineus, which thrived on the millet cultivars Crown and Siberian, neither reproduced nor completed development on any of the oilseed and forage cultivars. All cultivars of crushed Noralta, Raja, and Redwood flax were susceptible to: O. mercator, O. surinamensis, and Tribolium castaneum; Echo and Target rape only to O. mercator; Armavirec, Krasnodarets, Mennonite, and Peredovic sunflowers to all insects except C. ferrugineus; and Crown and Siberian millet to all insects. Tribolium confusum reproduced only on sunflower and millet cultivars. The potential danger of stored oilseeds in Western Canada from a new pest, O. mercator, was evaluated.

scholarly journals Insectos plaga de granos almacenados. Impacto en la seguridad alimentaria del municipio Las Tunas, Cuba

2016 ◽  
pp. 23
Author(s):  
Dayami Laguna Ávila ◽  
Carlos Pupo Feria ◽  
Gladia González Ramírez ◽  
Alina Espeek González
Keyword(s):  
Food Security ◽  
Food Safety ◽  
Tribolium Castaneum ◽  
Insect Pests ◽  
Sitophilus Oryzae ◽  
Main Species ◽  
Palabras Clave ◽  
Pest Insects ◽  
Stored Grains ◽  
Bruchus Pisorum

Insects pest of stored grains. Impact on food security of Las Tunas municipality, Cuba Resumen Con el objetivo de determinar las especies de insectos plaga en granos almacenados para la obtención de información que contribuyan al manejo de sus poblaciones y minimizar las pérdidas que influyen en la seguridad alimentaria de la población, se realizó un estudio en la Unidad 639 de la Empresa Mayorista de Productos Alimenticios del municipio Las Tunas, Cuba, en el período de enero del año 2011 hasta diciembre del año 2013. En el estudio se colectaron e identificaron 26 especies de insectos plaga en las naves, distribuidas en 19 géneros y 12 familias, pertenecientes a tres órdenes, de ellas, 23 especies cosmopolitas y de amplia distribución en Cuba. Las principales especies de insectos plaga encontradas fueron Tribolium castaneum; Ahasverus advena; Bruchus pisorum; Sitophilus oryzae; Ephestia sp. y Liposcelis sp. El hospedante con mayor frecuencia de aparición de las especies de insectos plaga fue el arroz, seguido por el frijol y el chícharo. Palabras clave: almacenes; cereal; plagas Abstract In order to determine the species of insect pests in stored grains to obtain information that contribute to the management of their populations and minimize losses that influence the food security of the population, a study was carried out in Unit 639 of the Company Wholesaler of Food Products of the municipality Las Tunas, Cuba, in the period from January 2011 until December 2013. The study collected and identified 26 species of insect pests in the ships, distributed in 19 genera and 12 families, belonging to three orders, of which 23 species are cosmopolitan and widely distributed in Cuba. The main species of pest insects found were Tribolium castaneum; Ahasverus advena; Bruchus pisorum; Sitophilus oryzae; Ephestia sp. and Liposcelis sp. The host with the highest frequency of appearance of insect pests was rice, followed by beans and peas. Keywords:  Insect pests; storage; food safety.

scholarly journals Mobility of Stored Product Beetles after Exposure to a Combination Insecticide Containing Deltamethrin, Methoprene, and a Piperonyl Butoxide Synergist Depends on Species, Concentration, and Exposure Time

Insects ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 151 ◽  
Author(s):  
Frank H. Arthur ◽  
Christos G. Athanassiou ◽  
W. Robert Morrison
Keyword(s):  
Exposure Time ◽  
General Pattern ◽  
Sitophilus Oryzae ◽  
Piperonyl Butoxide ◽  
Rhyzopertha Dominica ◽  
Cryptolestes Ferrugineus ◽  
Curve Fit ◽  
Exposure Interval ◽  
Grain Protectant ◽  
The Relationship

Adults of Rhyzopertha dominica (F.), the lesser grain borer, Cryptolestes ferrugineus (Stephens), the rusty grain beetle, and Sitophilus oryzae (L.), the rice weevil, were exposed for 1, 24, and 72 h on wheat treated with concentrations of 0% (untreated controls) to 100% of the proposed label rate of an experimental formulation of deltamethrin + Methoprene + piperonyl butoxide synergist. Movement and velocity of movement were assessed after each exposure time using a camera-based monitoring system (Ethovision®). Movement of R. dominica decreased with increasing concentration and exposure time, so that movement had virtually ceased at the 48 and 72 h exposures. Cryptolestes ferrugineus was less susceptible compared to R. dominica, but there was still a general pattern of decreased movement and velocity of movement with increasing concentration and exposure time. Sitophilus oryzae was the least susceptible species, with less differences at the 1 h exposure interval compared to the other two species, but after 24–72 h, the patterns of declining movement and velocity were apparent as the concentration increased. Data were analyzed using curve-fit equations to show the relationship between concentration and exposure time for each species. Results show that the Ethovison system can be used to assess the sub-lethal effects of exposure to grain protectant insecticides and elucidate behavioral variation between different stored product insects.

Variation in tolerance of seven species of stored product Coleoptera to methyl bromide and phosphine in strains from twenty-nine countries

1981 ◽  
Vol 71 (2) ◽  
pp. 299-306 ◽  
Author(s):  
Barbara D. Hole
Keyword(s):  
Tribolium Castaneum ◽  
Methyl Bromide ◽  
Developmental Stages ◽  
Rhyzopertha Dominica ◽  
Immature Stages ◽  
Sitophilus Granarius ◽  
Concentration Time ◽  
Large Populations

AbstractThe toxicities at 25°C and 70% RH of methyl bromide at about 4 mg/litre and phosphine at about 0·24 mg/litre were determined for large populations, including all developmental stages, of a number of strains of seven species of stored product beetles from 29 countries for a range of exposure periods. The species tested were Oryzaephilus surmamensis (L.), Rhyzopertha dominica (F.), Sitophilus granarius (L.), S. oryzae (L.), S. zeamais Motsch., Tribolium castaneum (Hbst.) and T. confusum Duv. With both fumigants, some individuals of certain strains of S. oryzae and T. castaneum survived a concentration × time product twice that sufficient to kill every individual of other strains of these species, and this was also true for R. dominica with methyl bromide and T. confusum with phosphine. With methyl bromide, some individuals of six species survived the longest exposure used. For the two species of Tribolium, this was 48 h, and for the three of Sitophilus and R. dominica it was 32 h. With phosphine, individuals in many strains of S. granarius, S. oryzae and S. zeamais survived for 8 days. In several of the species, there was some correlation between the tolerances of immature stages and of adults for both fumigants. Many strains were tolerant to both fumigants.

scholarly journals Evaluation of a Greek Diatomaceous Earth for Stored Product Insect Control and Techniques That Maximize Its Insecticidal Efficacy

2020 ◽  
Vol 10 (18) ◽  
pp. 6441
Author(s):  
Georgia V. Baliota ◽  
Christos G. Athanassiou
Keyword(s):  
Diatomaceous Earth ◽  
Sitophilus Oryzae ◽  
Rhyzopertha Dominica ◽  
Insect Control ◽  
Stored Products ◽  
Cryptolestes Ferrugineus ◽  
Wide Range ◽  
Insecticidal Efficacy ◽  
Confused Flour Beetle ◽  
Laboratory Bioassays

Laboratory bioassays were conducted to evaluate the insecticidal efficacy of a diatomaceous earth deposit from Greece, for a wide range of stored product insects. In this context, populations of five different insect species, Tribolium confusum Jacquelin DuVal, the confused flour beetle; Sitophilus oryzae (L.), the rice weevil; Rhyzopertha dominica (F.), the lesser grain borer; Oryzaephilus surinamensis (L.), the sawtoothed grain beetle; Cryptolestes ferrugineus (Stephens), the rusty grain beetle, which cover a major spectrum of insects species of stored products worldwide, were used in the bioassays. The different treatment of diatomaceous earth (DE) rocks (grinding, diatomaceous enrichment, powder granulometry) led to the creation of five types of formulations (namely DE1, DE2, DE3, DE5 and DE6) that exhibited significant fluctuations in their insecticidal efficacy when applied on wheat. In general, some of the modified formulations were found to be very effective against species such as R. dominica and T. confusum that may be difficult to control at the current labeled doses of commercial DE formulations. Overall, our data clearly indicate that this specific Greek deposit has considerable insecticidal properties, which can be further utilized in designing commercial formulations for insect control at the postharvest stages of durable agricultural commodities, provided that the deposit will be modified at specific enrichment and granulometry levels.

Mobility parameters of Tribolium castaneum and Rhyzopertha dominica populations with different susceptibility to phosphine

2020 ◽  
Vol 87 ◽  
pp. 101593 ◽  
Author(s):  
Maria K. Sakka ◽  
Donato Romano ◽  
Cesare Stefanini ◽  
Angelo Canale ◽  
Giovanni Benelli ◽  
...  
Keyword(s):  
Tribolium Castaneum ◽  
Rhyzopertha Dominica

STORAGE STABILITY OF FARM-STORED RAPESEED AND BARLEY

1977 ◽  
Vol 57 (2) ◽  
pp. 351-365 ◽  
Author(s):  
R. N. SINHA ◽  
H. A. H. WALLACE
Keyword(s):  
Tribolium Castaneum ◽  
Storage Stability ◽  
Hot Spot ◽  
Fungal Spores ◽  
Cryptolestes Ferrugineus ◽  
Pest Infestation ◽  
Storage Fungi ◽  
Aspergillus Glaucus ◽  
Cheyletus Eruditus ◽  
Reduced Temperature

Rapeseed was more vulnerable than barley to pest infestation when 46 and 52 t, respectively, were stored in farm bins in Manitoba during 1973–76. The fat acidity of unheated barley did not increase in 3 yr, but that of rapeseed increased by 65% in the 1st yr and 120% by the 3rd yr; in a small heated pocket of rapeseed, fat acidity rose in the 3rd yr by 1,000%. Cladosporium was the major field fungus of rapeseed and Alternaria of barley. Penicillium and members of Aspergillus glaucus group were the major storage fungi associated with rapeseed. Unlike barley, rapeseed was heavily infested by grain mites, Acarus immobilis, Glycyphagus destructor, and their predators, Blattisocius keegani and Cheyletus eruditus. Test insects, Cryptolestes ferrugineus and Tribolium castaneum, introduced in both bins, could not overwinter. Turning of both crops in the spring reduced temperature and moisture differences between the warm center and cooler edges, but it also dispersed fungal spores and mites throughout the bulks. A succession of storage fungi developed in a rapeseed hot spot, caused by moisture leaking through the wall. Occurrence of A. candidus coincided with germination loss of rapeseed. High CO2 concentration (4%) for over a 9-mo period was found in the hot spot in the rapeseed bulk.

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