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Diapause concerns the fascinating phenomenon in the biology of insect development which allows better understanding the local adaptation and phenotypic plasticity to seasonal variations in environment. There is lot of reasons to carry out the research on diapause both for fundamental and applied sciences. Photoperiod is one of the main environmental cues followed by insects to predict the forthcoming seasonal changes and to adapt these changes in their life-history traits. Thus, the effect of different photoperiod regimes on development and diapause induction of larvae of the Indian meal mothPlodia interpunctella(Hübner) was evaluated at a constant temperature of 17 °C. Development was significantly faster at a photoperiod of 12:12 light:darkness (L:D) than at 8:16, 10:14, 14:10 and 16:8 L:D. A photoperiod of 12:12 (L:D) induced most larvae (≥ 71%) to enter diapause, while this percentage was slightly lower (60%) at both shorter(8 h) and longer (16 h) day lengths (50%). The different photoperiod regimes did not affect the percentage of adult emergence. Fat and protein composition of the diapausing larvae differed significantly among treatments as well as between diapausing and non-diapausing larvae. Larvae developing from 8:16 (L:D) contained the maximum amount of protein (36.8%) compared to other regimes, while the minimum amount (21.0%) was noted in larvae that developed at 16:8 (L:D). Six types of fatty acids were detected in the larvae: myristic acid (methyl tetradecenoate), palmitoleic acid (9-hexadecenoic acid, methyl ester), palmitic acid (hexadecenoic acid, methyl ester), linoleic acid (9, 12-Octadecadienoic acid (Z, Z), methyl ester), oleic acid [9-octadecenoic acid, methyl ester (E)] and stearic acid (octadecanoic acid, methyl ester). The results also reveal that the percent of fatty acids detected in the diapausing larvae varies significantly and the same trends imply in the interaction of fatty acid and photoperiod regimes. Moreover, three quarters of the total variance was accounted for by the Principal Component Analysis (PCA) of the fatty acids. Different proportions of fatty acids were noted among treatments, suggesting that photoperiod influences a number of key biological traits inP. interpunctella, much more than the percentage of the diapausing larvae per se.
Mahbub Hasan; Sayla Aktar Chowdhory; A. S. M. Shafiqur Rahman; Christos G. Athanassiou. Development and diapause induction of the Indian meal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) at different photoperiods. Scientific Reports 2020, 10, 1 -10.
AMA StyleMahbub Hasan, Sayla Aktar Chowdhory, A. S. M. Shafiqur Rahman, Christos G. Athanassiou. Development and diapause induction of the Indian meal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) at different photoperiods. Scientific Reports. 2020; 10 (1):1-10.
Chicago/Turabian StyleMahbub Hasan; Sayla Aktar Chowdhory; A. S. M. Shafiqur Rahman; Christos G. Athanassiou. 2020. "Development and diapause induction of the Indian meal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) at different photoperiods." Scientific Reports 10, no. 1: 1-10.
We evaluated possible improvements to the mass rearing of the larval parasitoid Habrobracon hebetor (Say) (Hymenoptera: Braconidae) on irradiated host wax moth Galleria mellonella L. and Indian meal moth Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) larvae. The use of irradiated G. mellonella and P. interpunctella larvae at the dose of 150 Gy proved useful for enhancing the parasitism and adult emergence of H. hebetor due to the absence of negative repercussions on parasitoid development. Overall, parasitism was increased as the host larvae was irradiated with higher doses, while significantly higher parasitism was recorded at 150 and 300 Gy compared to lower doses. The female parasitoids preferred the irradiated larvae and significantly higher numbers of larvae were parasitized compared with non-irradiated larvae. The results also showed that irradiated larvae of G. mellonella served better as hosts for H. hebetor as compared with irradiated larvae of P. interpunctella. The implementation of these findings would be helpful for improving the mass production of parasitoids and the effectiveness of releases of biocontrol agents for the control of stored product pests.
Mahbub Hasan; Lubna Yeasmin; Christos G. Athanassiou; Abdul Bari; Saiful Islam; Bari. Using Gamma Irradiated Galleria mellonella L. and Plodia interpunctella (Hübner) Larvae to Optimize Mass Rearing of Parasitoid Habrobracon hebetor (Say) (Hymenoptera: Braconidae). Insects 2019, 10, 223 .
AMA StyleMahbub Hasan, Lubna Yeasmin, Christos G. Athanassiou, Abdul Bari, Saiful Islam, Bari. Using Gamma Irradiated Galleria mellonella L. and Plodia interpunctella (Hübner) Larvae to Optimize Mass Rearing of Parasitoid Habrobracon hebetor (Say) (Hymenoptera: Braconidae). Insects. 2019; 10 (8):223.
Chicago/Turabian StyleMahbub Hasan; Lubna Yeasmin; Christos G. Athanassiou; Abdul Bari; Saiful Islam; Bari. 2019. "Using Gamma Irradiated Galleria mellonella L. and Plodia interpunctella (Hübner) Larvae to Optimize Mass Rearing of Parasitoid Habrobracon hebetor (Say) (Hymenoptera: Braconidae)." Insects 10, no. 8: 223.
Research here explored the use of controlled atmospheres (CA) for managing arthropod pests that infest dry-cured hams. Experiments were conducted with low oxygen (O2) achieved with low pressure under a vacuum, high carbon dioxide (CO2), and ozone (O3). Results showed that both low O2 and high CO2 levels required exposures up to 144 h to kill 100% of all stages of red-legged ham beetle, Necrobia rufipes (De Geer) (Coleoptera: Cleridae) and ham mite Tyrophagus putrescentiae (Schrank) (Sarcoptiformes: Acaridae) at 23 °C. In addition, both low O2 and high CO2 had no significant mortality against the ham beetle and ham mites at short exposures ranging from 12 to 48 h. Ham beetles were more tolerant than ham mites to an atmosphere of 75.1% CO2 and low pressure of 25 mm Hg, which imposed an atmosphere estimated at 0.9% O2. Both low O2 and high CO2 trials indicated that the egg stages of both species were more tolerant than other stages tested, but N. rufipes eggs and pupae were more susceptible than larvae and adults to high concentration ozone treatments. The results indicate that O3 has potential to control ham beetles and ham mites, particularly at ≈166 ppm in just a 24 h exposure period, but O3 is known from other work to have poor penetration ability, thus it may be more difficult to apply effectively than low O2 or high CO2. would be. CA treatment for arthropod pests of dry-cured hams show promise as components of integrated pest management programs after methyl bromide is no longer available for use.
Mahbub Hasan; Michael J. Aikins; Wes Schilling; Thomas W. Phillips. Efficacy of Controlled Atmosphere Treatments to Manage Arthropod Pests of Dry-Cured Hams. Insects 2016, 7, 44 .
AMA StyleMahbub Hasan, Michael J. Aikins, Wes Schilling, Thomas W. Phillips. Efficacy of Controlled Atmosphere Treatments to Manage Arthropod Pests of Dry-Cured Hams. Insects. 2016; 7 (3):44.
Chicago/Turabian StyleMahbub Hasan; Michael J. Aikins; Wes Schilling; Thomas W. Phillips. 2016. "Efficacy of Controlled Atmosphere Treatments to Manage Arthropod Pests of Dry-Cured Hams." Insects 7, no. 3: 44.
A new protocol for mass-rearing the redlegged ham beetle, Necrobia rufipes De Geer, in the laboratory is described, that facilitates the production of large numbers of insects with minimal handling. A culture medium comprised of finely ground (150 μm) dried fish, dry dog food and pieces of dried cured ham was tested on N. rufipes. This rearing medium produced significantly larger population numbers when compared with a range of published and unpublished methods. When reared on this medium with initial colonies of 200 mixed sex adult beetles, there was more than a three-fold increase in N. rufipes adult populations from the original numbers over a 7–8 week period. This simple procedure minimizes cannibalism as the larvae were shifted into glass vials for pupal cell formation.
Mahbub Hasan; Thomas W. Phillips. Mass-rearing of the redlegged ham beetle, Necrobia rufipes De Geer (Coleoptera: Cleridae) for laboratory research. Journal of Stored Products Research 2009, 46, 38 -42.
AMA StyleMahbub Hasan, Thomas W. Phillips. Mass-rearing of the redlegged ham beetle, Necrobia rufipes De Geer (Coleoptera: Cleridae) for laboratory research. Journal of Stored Products Research. 2009; 46 (1):38-42.
Chicago/Turabian StyleMahbub Hasan; Thomas W. Phillips. 2009. "Mass-rearing of the redlegged ham beetle, Necrobia rufipes De Geer (Coleoptera: Cleridae) for laboratory research." Journal of Stored Products Research 46, no. 1: 38-42.
The Uzifly, Exorista sorbillans Weidemann, is an endoparasitoid of the the silkworm moth, Bombyx mori L., and can impact commercial sericulture. Effects of Uzifly age, density, temperature and gamma radiation (60Co) on the mass-production of the hyperparasitoid Nysolynx thymus (Girault) were investigated. There was a direct relationship between progeny production and an increase in number of host puparia presented, and a significant decline in the number of progeny with increased host-age. Maximum progeny production was obtained by maintaining a 1:5 to 1:8 parasitoid-to-host ratio for all the age groups. Two to 4-day-old host puparia were most suitable for obtaining the maximum progeny production of N. thymus for all the host-densities. The intrinsic rate of increase (r m day−1) increased with the increased host density for all the host-age groups. The values of net reproductive rate (R 0) and gross reproductive rate (GRR) increased for all the density levels and host age groups. On the other hand, the values for the doubling time (D) and finite capacity of increase (λ) gradually decreased with increased host density for all the host age groups. Host density and host-age significantly influenced the sex-ratio of progeny in N. thymus. Higher proportions of females were observed at higher host density levels and for younger host age groups. The progeny production and sex ratio of the parasitoid varied significantly with temperature. The maximum mean number of progeny was recorded at 25°C, while the minimum was at 30°C. The trend of progeny production at different temperatures was on the order 25 > 20 > 30°C. The highest values for the net reproductive rate (R 0) and GRR for the progeny production were recorded at 25°C compared to 20 and 30°C. Both the values for doubling time of capacity (D) and finite capacity (λ) increased with the trend of 25, 30 and 20°C. The highest value for the intrinsic rate of increase (r m day−1) of progeny production was recorded at 25°C, while the lowest value was at 20°C. The sex-ratios were always female-biased at all the temperatures. Temperature had a significant effect on the longevity of adult N. thymus. The longevity of the adults decreased with an increase of temperature for both sexes. The highest rate of parasitism was observed at 20°C followed by 25 and 30°C. More than 95% parasitism was observed at all temperatures. Gamma irradiation significantly increased the progeny production of N. thymus when reared either on early or late irradiated host puparia, particularly in the parental generation, but irradiated early host pupae were more suitable for mass production of N. thymus than the irradiated late pupae. The sex ratio of parasitoids developing from gamma irradiated host pupae varied significantly. Higher proportions of females were observed for all the dose and host-age groups.
Mahbub Hasan; Rayhan Uddin; Ataur Rahman Khan; Aminuzzaman Md Saleh Reza. Effects of host density, host age, temperature and gamma irradiation on the mass production ofNesolynx thymus(Hymenoptera: Eulophidae), an endoparasitoid of Uzi fly,Exorista sorbillans(Diptera: Tachinidae). Biocontrol Science and Technology 2009, 19, 243 -259.
AMA StyleMahbub Hasan, Rayhan Uddin, Ataur Rahman Khan, Aminuzzaman Md Saleh Reza. Effects of host density, host age, temperature and gamma irradiation on the mass production ofNesolynx thymus(Hymenoptera: Eulophidae), an endoparasitoid of Uzi fly,Exorista sorbillans(Diptera: Tachinidae). Biocontrol Science and Technology. 2009; 19 (sup1):243-259.
Chicago/Turabian StyleMahbub Hasan; Rayhan Uddin; Ataur Rahman Khan; Aminuzzaman Md Saleh Reza. 2009. "Effects of host density, host age, temperature and gamma irradiation on the mass production ofNesolynx thymus(Hymenoptera: Eulophidae), an endoparasitoid of Uzi fly,Exorista sorbillans(Diptera: Tachinidae)." Biocontrol Science and Technology 19, no. sup1: 243-259.
The biological activity of essential oil extracted from coriander, Coriandrum sativum L. (Apiaceae) against eggs, larvae and adults of Tribolium castaneum (Herbst) was investigated in a series of laboratory experiments. Bioassays conducted in air-tight glass chambers showed vapour toxicity and strong repellency on filter paper arena test towards all the stages used. Responses varied significantly (P < 0.001) within insect stages, dosages and exposures. At 12.0 μg/ml dosage, mortality of adults reached 95%, but for 12-, 14- and 16-days larvae, mortalities were 65, 74 and 82%, respectively. On the developmental inhibition, individuals fumigated at the larval stage confirmed that the percentage of larvae reaching to pupal stage and pupae to adult stage, decreased significantly (P < 0.001) with increasing dosage concentration. The oil fumigation yielded 100% mortality for T. castaneum larvae, pupae and adults at 0.08 μg/ml dosage. The oil had fumigant activity against eggs and the toxicity progressively increased with increased exposure times and concentrations. One hundred per cent T. castaneum egg mortalities were obtained with oil fumigation at 20 μg/ml and 96 h exposure period. C. sativum oil also showed highly repellent activity to the adults of T. castaneum, with overall repellency was 90% and at a dosage of 12 μg/ml repellency was 100% in a filter-paper arena test.
M. S. Islam; M. Mahbub Hasan; W. Xiong; S. C. Zhang; C. L. Lei. Fumigant and repellent activities of essential oil from Coriandrum sativum (L.) (Apiaceae) against red flour beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). Journal of Pest Science 2008, 82, 171 -177.
AMA StyleM. S. Islam, M. Mahbub Hasan, W. Xiong, S. C. Zhang, C. L. Lei. Fumigant and repellent activities of essential oil from Coriandrum sativum (L.) (Apiaceae) against red flour beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). Journal of Pest Science. 2008; 82 (2):171-177.
Chicago/Turabian StyleM. S. Islam; M. Mahbub Hasan; W. Xiong; S. C. Zhang; C. L. Lei. 2008. "Fumigant and repellent activities of essential oil from Coriandrum sativum (L.) (Apiaceae) against red flour beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)." Journal of Pest Science 82, no. 2: 171-177.
The soft-electron beam (low-energy electrons) and gamma-radiation sensitivities of phosphine-resistant (PHR) and -susceptible (PHS) strains of adults lesser grain borer Rhyzopertha dominica (F.) were studied, with particular reference to DNA damage assessed using single-cell electrophoresis (comet assay). Results showed that mortality in adult R. dominica varied significantly between both PHR and PHS strains. Adults of the PHR strain were found to be more tolerant toward soft-electron and gamma radiation than adults of the PHS strain. Studies on the longevity of strains showed that mean survival time and dose rate were highly correlated with both strains and treatments. Results also showed that adults of the PHR strain lived longer than adults of PHS strain for both treatments. Radiation sensitivity indices, however, decreased as radiation dose increased in both strains. Analysis of DNA damage, after 40- and 160-Gy gamma radiation, was carried out using cells obtained from both strains. Gamma-irradiated adults of both strains showed typical DNA fragmentation, compared with cells from nonirradiated adults, which showed more intact DNA. Investigations using the comet assay showed that tail length, moment, olive-tail moment, percentage of tail DNA, and percentage of DNA damage were all greater in the PHS strain compared with the PHR strain and the control insects. Results also showed that DNA damage remained at a constant level for up to 24 h after irradiation. The results have been discussed in relation to the observed strain differences in radiation sensitivity and resistance to phosphine.
Mahbub Hasan; Setsuko Todoriki; Akihiro Miyanoshita; Taro Imamura; Toru Hayashi. Soft-Electron Beam and Gamma-Radiation Sensitivity and DNA Damage in Phosphine-Resistant and -Susceptible Strains of Rhyzopertha dominica. Journal of Economic Entomology 2006, 99, 1912 -1919.
AMA StyleMahbub Hasan, Setsuko Todoriki, Akihiro Miyanoshita, Taro Imamura, Toru Hayashi. Soft-Electron Beam and Gamma-Radiation Sensitivity and DNA Damage in Phosphine-Resistant and -Susceptible Strains of Rhyzopertha dominica. Journal of Economic Entomology. 2006; 99 (5):1912-1919.
Chicago/Turabian StyleMahbub Hasan; Setsuko Todoriki; Akihiro Miyanoshita; Taro Imamura; Toru Hayashi. 2006. "Soft-Electron Beam and Gamma-Radiation Sensitivity and DNA Damage in Phosphine-Resistant and -Susceptible Strains of Rhyzopertha dominica." Journal of Economic Entomology 99, no. 5: 1912-1919.