scholarly journals Comparative Evaluation of Four Agrochemicals against Cryptolestes ferrugineus and Tribolium castaneum along with Subsequent Infection Inhibition of Aflatoxigenic Aspergillus spp. in Stored Wheat

2021 ◽  
Author(s):  
Tiyyabah Khan
Keyword(s):  
Tribolium Castaneum ◽  
Comparative Evaluation ◽  
Cryptolestes Ferrugineus ◽  
Subsequent Infection ◽  
Stored Wheat ◽  
Infection Inhibition

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.

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.

Changes in stored-wheat ecosystems infested with two combinations of insect species

1980 ◽  
Vol 58 (9) ◽  
pp. 1524-1534 ◽  
Author(s):  
N. D. G. White ◽  
R. N. Sinha
Keyword(s):  
Carbon Dioxide ◽  
Sitophilus Oryzae ◽  
The Other ◽  
Rhyzopertha Dominica ◽  
Cryptolestes Ferrugineus ◽  
Oryzaephilus Surinamensis ◽  
Stored Wheat ◽  
Seed Damage ◽  
Grain Moisture ◽  
Multiple Species

The consequences of infestation of bulk-stored wheat by multiple species of insects were determined for 60 weeks at 30 ± 2 °C. Eight 204-L drums containing wheat at 15.5% moisture content were used as three distinct systems: (I) Control system (two drums), insect free; (II) RST system (three drums), infested with the grouping of Rhyzopertha dominica F., Sitophilus oryzae (L.), and Tribolium castaneum (Herbst); and (III) COT system (three drums), infested with the grouping of Cryptolestes ferrugineus (Stephens), Oryzaephilus surinamensis (L.), and T. castaneum. At triweekly intervals carbon dioxide, oxygen, temperature, grain moisture, seed damage, grain weight, dust weight, fat acidity values (FAV), seed germination, microflora, and the numbers of insects and the mite Tarsonemus granarius Lindquist were measured. Seeds died by week 15 and bacterial infection on them increased in all systems. The seed FAVs in the RST system peaked by week 30 and then declined steadily while these values were increasing continuously in the Control and levelling off in the COT systems. Insects multiplied exponentially for 6–15 weeks and then declined sharply or maintained oscillating populations; Sitophilus and Oryzaephilus were unable to survive in the presence of the other insects.

Sign in / Sign up

Export Citation Format

Share Document