Effect of Gamma Radiation on Growth and Development of Rust Red Flour Beetle Tribolium Castaneum (Herbst.) (original) (raw)
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Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
The journal of Toxicology and pest control is one of the series issued twice by the Egyptian Academic Journal of Biological Sciences, and is devoted to publication of original papers related to the interaction between insects and their environment. The goal of the journal is to advance the scientific understanding of mechanisms of toxicity. Emphasis will be placed on toxic effects observed at relevant exposures, which have direct impact on safety evaluation and risk assessment. The journal therefore welcomes papers on biology ranging from molecular and cell biology, biochemistry and physiology to ecology and environment, also systematics, microbiology, toxicology, hydrobiology, radiobiology and biotechnology. www.eajbs.eg.net
Gamma radiation sensitivity of larvae and adults of the red flour beetle, Tribolium castaneum Herbst
Anzeiger Fur Schadlingskunde-journal of Pest Science, 2003
In this study, the susceptibility of larvae and adults of Tribolium castaneum (Herbst) to gamma radiation was investigated in the laboratory in Turkey. Gamma radiation was applied at 6 dose levels between 20 and 200 Gy to 13–15 day-old adults and at 5 dose levels between 20 and 180 Gy to 18–20 day-old larvae of T. castaneum. All experiments were performed in growth chambers maintained at 27 ± 1 °C and 70 ± 5 % r.h. The larvae proved to be the more susceptible stage, survival to the adult stage being prevented by exposure of the eggs to 100 Gy; the adult stage was less susceptible. LD50 and LD99 values were determined as 19,75 and 42,97 Gy for larvae and 33,21 and 64,50 Gy for adult stage, respectively. It was concluded that 100 Gy is the effective dose for both larval and adult stages.
University Journal of Zoology, Rajshahi University, 2007
Gamma radiation effects on the gonads of Tribolium castaneum were assessed by cytological techniques. Pupal treatments of 15 Gy resulted in the significant reduction of testes and ovaries leading to sterility in males and infecundity in females, respectively. The present findings thus provide an important information for designing a sterile male technique for this storage pest species. Key words: Gamma radiation, Tribolium castaneum, reproductive organs Univ. j. zool. Rajshahi Univ. Vol.25 2006 p.11-14
Journal of Stored Products Research, 1996
In this study, gamma radiation was applied at six dose levels over the range of 5-40 Gy for 0-2-day-old eggs, and at eight dose levels between 10-80 Gy for 16-lB-day-old larvae of Tribolium confusum. Sterility, mortality and other effects of gamma radiation were investigated. All experiments were performed in incubators maintained at 27 f 0.5'C and 70 + 5% r.h. The development of ad&s reared on different flours from irradiated eggs and larvae was prevented by exposure to 40 and 50 Gy of gamma radiation, respectively. Rate of development of these stages on different flours and the yield of adults was influenced by rearing medium. Rapidly deveIoping flour beetles are more susceptible to killing by gamma radiation. For each stage reared on different media (wheat, barley and maize flours), LD, and LD,, values were determined, together with sterilizing dose levels (SD,, and SD,,). Copyright $3 1996
Anzeiger Fur Schadlingskunde-journal of Pest Science, 1995
In this study, gamma radiation was applied between 10–120 Gy at 10 dose levels for 2–4 days-old pupae; 10–150 Gy at 11 dose levels for 12–14 days-old adults ofT. confusum. All experiments were carried out in incubators maintained at 27±0.5°C and 70±5% relative humidity. The development of adults reared on different flours from irradiated pupae was not prevented by exposing these stages investigated doses. Rapidly developing confused flour beetle were more susceptible to killing by gamma radiation. Adults that emerged from treated pupa had elytral and other deformities. In barley flour, rate of deformed individuals were higher than the other rearing media. LD50, LD99,9 and SD99,9 values for wheat flour were high compared with both barley and maize flour. For adult treatment, there were differences in survival among rearing diets especially at doses of 40, 50 and 60 Gys. But there were no differences for LD50 and LD99,9 values at adult stage, indicating little influence of rearing medium on susceptibility of adults. On the other hand, there were little differences between rearing diets for SD50 and SD99,9.
Journal of Asia-Pacific Entomology, 2018
With respect to the limitations use of methyl bromide and phosphine, employing ionizing radiation to control stored product pests has attracted great attention. The aim of this study is the investigation of the combined effects of gamma irradiation as viable alternatives to synthetic insecticides and environmental management on mortality and sterility of Rhyzopertha dominica (Fabricius) in a wheat cultivar (Gascogen). The effect of doses range from 30 to 2000 Gy gamma irradiation in combination with manipulation of temperature (15, 21, 27 and 32°C) and relative humidity (20%, 50%, 65% and 85%) on 5-10 days old adults of R. dominica in Gascogen cultivar of wheat were explored. The experiments were repeated three times and conducted in The Nuclear Agriculture Research School in Karaj and laboratory of shahid steki silo in shahre-kord. Probit analysis revealed that both temperature and relative humidity had combined effects when used with gamma irradiation. The lowest doses of gamma ray required to kill 25% (14.2 Gy) and 50% (610.8 Gy) of the population (LD 25 and LD 50) were recorded at 21°C and 85% relative humidity respectively. The low dose for 99% mortality (LD 99 ; 2386.7 Gy) was recorded for beetles maintained at 21°C and 50% relative humidity. The effect of temperature (15, 21, 27 and 32°C) on sterility caused by gamma irradiation was also investigated. The results showed that the F 1 generation emerged only when the beetles were treated with doses of 0-100 Gy at 32°C and 0-70 Gy at 27°C. These results indicate that temperature and relative humidity play an important role in the susceptibility of the lesser grain beetle to gamma irradiation. The results suggest that controlling the efficiency of gamma radiation through environmental control allows the use of low doses of gamma radiation that have a less harmful effect on human health, non-target organisms and seed agronomic features.
Julius-Kühn-Archiv, 2018
Phytosanitary irradiation for food commodities has been widely accepted in recent years. Gamma irradiation has been used as a phytosanitary treatment against microbial diseases, insect infestation and food spoilage. The goal of the current study was to determine the lowest possible dose of gamma irradiation that will induce longterm sterility of insects through generations. The effect of four gamma irradiation doses examined were; 20,40, 50 and 70 Gy. Irradiated males were crossed with normal females. For the cowpea beetle Callosobruchus maculatus(F.), adult fecundity, hatchability, adult emergence, sterility% was investigated. 100% adult mortality was achieved by 70 Gy dose. Fecundity, hatchability, number of adults emerged, sterility% were significantly reduced when males exposed to 20, 40, and 50 Gy compared to the control. The effect of parental irradiated males exposed to 20 Gy on F2 generation was also studied. Fecundity, hatchability, number of adult emerged, sterility% were ...
Journal of Plant Protection Research, 2010
Gamma Radiation Sensitivity of Different Stages of Saw-Toothed Grain Beetle Oryzaephilus Surinamensis L. (Coleoptera: Silvanidae) The effect of gamma irradiation on different developmental stages of Oryzaephilus surinamensis L., was investigated. Results showed that a required dose to prevent larval emergence from irradiated 1-2-days-old eggs was 60 Gray (Gy), and 350 Gy was required to prevent adult emergence from 15-days-old larvae. Also the required dose of radiation to prevent adult emergence from irradiated 5-days-old pupa was 700 Gy. The dose of 200 Gy caused 100% mortality of irradiated adults 28 days after treatment. In addition, the effect of gamma rays was studied on the developmental stage period of each irradiated stage till adult emergence. The results revealed that there was a dose-dependent increase of the developmental periods. The growth index of adults was significantly decreased with increasing dose of radiation administered to eggs, larvae and pupae. It is recomm...
Brazilian Journal of Radiation Sciences, 2022
Brazil is one of the world's largest grain producers, and inadequate storage favors the appearance of pests. Among the most important insect species, the genus Sitophilus and Tribolium stand out. The constant use of chemical pesticides leads to the selection of resistant populations and the need to study different methods for integrated control. Considering these aspects, the present study aimed to evaluate the mortality of adult individuals of S. zeamais in brown rice and T. castaneum in wheat flour, collected on substrates sold in the retail trade in São Paulo/SP city, exposed to increasing doses of gamma radiation. The experiment was carried out at the Radiation Technology Center at the Institute for Energetic and Nuclear Research-IPEN/USP, the substrates with the specimens were irradiated with doses of 0 (control), 25, 50, 75, 100, and 200 Gy in a Cobalt-60 source, type Gammacell 220, at a dose rate of 0.903 kGy/hour. The experiment consisted of 4 replicates per treatment and each replicate 10 insects, in a total of 40 insects per treatment, and the statistical design was completely randomized. The dose of 75 Gy was sufficient to obtain 100% efficiency for S. zeamais, but the dose of 200 Gy did not reach satisfactory efficiency for controlling T. castaneum. Therefore, a dose of 400 Gy should be recommended for the control of these two insect species in their respective substrates.