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    Wyświetlanie 1-4 z 4
    Tytuł:
    Insecticidal efficiency and safety of zinc oxide and hydrophilic silica nanoparticles against some stored seed insects
    Autorzy:
    Haroun, S.A.
    Elnaggar, M.E.
    Zein, D.M.
    Gad, R.I.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084748.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Callosobruchus maculatus
    hydrophilic silica nanoparticles
    Sitophilus oryzae
    Tribolium castaneum
    wheat
    zinc oxide nanoparticles
    Opis:
    The present study was conducted to evaluate the insecticidal efficiency and safety of zinc oxide nanoparticles (ZnO NPs) and hydrophilic silica nanoparticles (SiO2 NPs) against: adults of rice weevil (Sitophilus oryzae L.); red flour beetle (Tribolium castaneum Herbst.) and cowpea beetle (Callosobruchus maculatus F.) results showed that, both ZnO NPs and hydrophilic SiO2 NPs exhibited a significant toxic effect (df, F and p < 0.5) against S. oryzae and C. maculatus at the highest concentration while T. castaneum showed high resistance against the two tested materials. At the end of the experiment, recorded mortality was: 81.6, 98.3 and 58.3% at the highest concentration used for each insect (0.3, 2 and 8 gm ⋅ kg–1 of SNPs with C. maculatus, S. oryzae and T. castaneum, respectively), while mortality was 88.3, 100 and 38.3% at the highest concentration used for each insect (0.6, 2.5 and 8 gm ⋅ kg–1 of ZnO NPs with C. maculatus, S. oryzae and T. castaneum, respectively). Both tested materials caused high reductions in F1-progeny (%) with C. maculatus and S. oryzae. Histopathological examination of male mice livers showed hepatic architecture with congested blood sinusoids, binucleated hepatocytes nuclei, dilated central vein and margainated chromatin in some nuclei. Histopathological assessment of the lungs showed normal histoarchitecture. There were no differences in alveolar septa, bronchiolar and epithelium of the treated and untreated animals. Silica and zinc oxide nanoparticles have a good potential to be used as stored seed protectant alternatives if applied with proper safety precautions.
    Źródło:
    Journal of Plant Protection Research; 2020, 60, 1; 77-85
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biodegradation of expanded polystyrene (EPS) (Styrofoam) block as feedstock to Tribolium castaneum (Red Flour Beetle) imago: A promising plastic-degrading process
    Autorzy:
    Fabreag, Mark Angelo C.
    Familara, Joanne A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1076717.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Biodegradation
    Expanded Polystyrene (EPS) (Styrofoam) Block
    Feedstock
    Ingestion
    Tribolium castaneum (Red Flour Beetle)
    Opis:
    The study was conducted to determine the biodegradation of Expanded Polystyrene (EPS) (Styrofoam) Blocks as feedstock to Tribolium castaneum (Red Flour Beetle) Imago. Three-hundred-sixty (360) Tribolium castaneum (Red Flour Beetle) Imagos were collected and acclimatized for two days before being exposed to experimentation. Incubation boxes were made using plywood. Three set-ups were prepared, with 30 Tribolium castaneum (Red Flour Beetle) each. Seven (7) grams of Styrofoam Block were placed in Set-up 1, seven (7) grams of Styrofoam and seven (7) grams of Rice grain Bran in Set-up 2 and seven (7) grams of Rice grain Bran in Set-up 3 with three replications each. Mean percent mass loss of Styrofoam and Rice grain Bran, mean percent mass loss and survival rate of Tribolium castaneum (Red Flour Beetle) were measured at 5th, 10th, 15th and 20th day incubation periods. Maximum mean percent mass loss in the different set-ups was observed at the 10th, 15th and 20th incubation period, with loses of 7.14%, 10.71% and 10.71%, respectively. Meanwhile, maximum mean percent increased weight of Tribolim castaneum (Red Flour Beetle) was observed at the 10th day incubation period, with 13.51%, 44.44% and 37.93%, respectively. Microscopic observation, of a dark white smear on the gut of the specimen indicates that Tribolium castaneum (Red Flour Beetle) Imago really masticate and biodegrade the Expanded Polystyrene (EPS) (Styrofoam) blocks. The survival rate of Tribolium castaneum (Red Flour Beetle) in the diverse set-ups showed no significant difference. This implies that ingestion of Styrofoam Block had no lethal effects on the natural weight variation and health of the Tribolium castaneum (Red Flour Beetle). Hence, results indicate that Expanded Polystyrene (EPS) (Styrofoam) Block can be a feedstock for Tribolium castaneum (Red Flour Beetle).
    Źródło:
    World News of Natural Sciences; 2019, 24; 145-156
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Responses of Tribolium castaneum (Coleoptera: Tenebrionidae) and Sitophilus oryzae (Coleoptera: Curculionidae) against essential oils and pure compounds
    Odpowiedź Tribolium castaneum (Coleoptera: Tenebrionidae) and Sitophilus oryzae (Coleoptera: curculionidae) na działanie olejków eterycznych i czystych związków
    Autorzy:
    Chaubey, M.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/71413.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Włókien Naturalnych i Roślin Zielarskich
    Tematy:
    response
    Tribolium castaneum
    Coleoptera
    Tenebrionidae
    Sitophilus oryzae
    Curculionidae
    essential oil
    pure compound
    alpha-pipene
    beta-caryophyllene
    Opis:
    The essential oils of Zingiber officinale rhizomes (Zingiberaceae) and Piper cubeba berries (Piperaceae) as well as pure compounds, α-pinene and β-caryophyllene, were evaluated for their contact toxicity, persistence of insecticidal and antifeeding activities against T. castaneum and S. oryzae. β-Caryophyllene showed highest toxicity followed by P. cubeba, Z. officinale and α-pinene against both insects. S. oryzae was more sensitive than T. castaneum to both essential oils and pure compounds. α-pinene had least persistence followed in increasing order by β-caryophyllene while Z. officinale and P. cubeba essential oils showed same trends regarding persistence but more than pure compounds. In antifeedant assay, both essential oils and pure compounds exhibited antifeedant activities against T. castaneum and S. oryzae adults. Feeding deterrency was maximum in both insects by P. cubeba essential oil followed by Z. officinale essential oil, β-caryophyllene and α-pinene.
    Badano olejki eteryczne kłącza Zingiber officinale (Zingiberaceae) i jagody Piper cubeba (Piperaceae), a także czyste związki: α-pinen i β-kariofilen pod względem ich toksyczności kontaktowej, trwałości działania owadobójczego i działania deterentnego w stosunku do Tribolium castaneum i Sitophylus oryzae. Najwyższą toksyczność w stosunku do obu owadów wykazał β- kariofilen, a następnie P. cubeba, Z. officinale i α-pinen. S. oryzae był bardziej wrażliwy niż T. castaneum zarówno na olejki eteryczne, jak i czyste związki. Działanie α-pinenu było najkrótsze, kolejny był β-kariofilen, natomiast czas działania olejków eterycznych wykazywał podobne trendy, lecz był dłuższy niż olejków eterycznych. W testach na działanie deterentne oba olejki eteryczne i czyste związki wykazywały właściwości odstraszające od jedzenia w stosunku do dorosłych osobników T. castaneum i S. oryzae. Działanie deterentne było najwyższe u obu owadów po zastosowaniu olejku eterycznego z P. cubeba, następnie olejku eterycznego z Z. officinale, β-kariofilenu i α-pinenu.
    Źródło:
    Herba Polonica; 2012, 58, 3
    0018-0599
    Pojawia się w:
    Herba Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The carcinogenic effects of benzoquinones produced by the flour beetle
    Autorzy:
    Lis, L.
    Bakula, T.
    Baranowski, M.
    Czarnewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/31981.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    beetle
    benzoquinone
    carcinogenic effect
    enterotoxic activity
    enterotoxin
    flour beetle
    healthy effect
    2-methyl-1,4 benzoquinone
    2-ethyl-1,4 benzoquinone
    Tribolium confusum
    red flour beetle
    Tribolium castaneum
    Opis:
    Humans and animals come into contact with various compounds in their natural environment. Most of the encountered substances are neutral, yet some may carry adverse health effects. The ingested food may be a source of harmful substances, including benzoquinones which, as shown by research results cited in this paper, demonstrate toxic, carcinogenic and enterotoxic activity. This group of compounds is inclusive of 2-methyl-1,4-benzoquinone (MBQ) and 2-ethyl-1,4-benzoquinone (EBQ), defensive secretions of the confused flour beetle (Tribolium confusum J. du V) and the red flour beetle (Tribolium castaneum Herbst). Benzoquinones have a carcinogenic effect, they are inhibitors of growth of various microorganisms, they produce a self-defense mechanism in threat situations and affect population aggregation. As noted by the referenced authors, the properties of benzoquinones have not been fully researched to this date.
    Źródło:
    Polish Journal of Veterinary Sciences; 2011, 14, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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