scholarly journals (Quasi)-Binomial vs. Gaussian Models to Evaluate Thiamethoxam, Pirimiphos-Methyl, Alpha-Cypermethrin and Deltamethrin on Different Types of Storage Bag Materials Against Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) and Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae)

Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 182
Author(s):  
Nikos E. Papanikolaou ◽  
Nickolas G. Kavallieratos ◽  
Maria C. Boukouvala ◽  
Chrisovalantis Malesios
Keyword(s):  
Insect Pests ◽  
Mortality Rates ◽  
Tribolium Confusum ◽  
Ephestia Kuehniella ◽  
P Value ◽  
Biaxially Oriented Polypropylene ◽  
Different Types ◽  
Pirimiphos Methyl ◽  
Lepidoptera Pyralidae ◽  
Coleoptera Tenebrionidae

The Mediterranean flour moth, Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) and the confused flour beetle, Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) are worldwide spread and notorious organisms of numerous stored-products. Both species are dangerous for bagged commodities as penetrators and invaders. The aim of the current study was to examine the efficacy of thiamethoxam, pirimiphos-methyl, alpha-cypermethrin, and deltamethrin, against E. kuehniella and T. confusum larvae, on different types of storage bag materials, i.e., woven propylene, biaxially oriented polypropylene and kraft paper through a (quasi)-binomial modeling approach. The type of the tested storage bag material did not affect the mortality rates of both species when treated with the tested insecticides. Thiamethoxam and pirimiphos-methyl showed statistically significant higher mortality rates on E. kuehniella and T. confusum (beta coefficient = 0.141; p-value < 0.05) compared to alpha-cypermethrin and deltamethrin. In addition, T. confusum exhibited significantly higher mortality rate in comparison to E. kuehniella. Our results also showed that the tested doses and surface treatments had a significant effect on the mortality E. kuehniella and T. confusum larvae. Significantly higher mortality rates were recorded when larvae were exposed on bag materials having both surfaces treated or on the single treated surface than when they were exposed on the untreated surface. Our findings can be useful towards an effective management strategy against stored-product insect pests.

scholarly journals Χρήση ετεροκυκλικών ενώσεων του αζώτου για την αντιμετώπιση εντόμων των αποθηκευμένων γεωργικών προϊόντων και τροφίμων και αξιολόγηση παραγόντων οι οποίοι επιδρούν στην εντομοκτόνο δράση τους

2019 ◽  
Author(s):  
Μαρία Μπουκουβάλα
Keyword(s):  
Tribolium Confusum ◽  
Ephestia Kuehniella ◽  
Lepidoptera Pyralidae ◽  
Coleoptera Tenebrionidae

Τα μέλη της ομάδας των πυρρολίων είναι πιθανόν να έχουν εντομοκτόνες ιδιότητες οι οποίες χρήζουν έρευνα στα μετασυλλεκτικά στάδια των γεωργικών προϊόντων. Σε αυτό το πλαίσιο, διερευνήθηκε η εντομοκτόνος δράση 13 νέων παραγώγων του πυρρολίου (δίνοντας τις κοινές ονομασίες 2a-syn, 2a-anti, 2f-syn, 2f-anti, 3a, 3g, 3i, 3k, 3l, 3m, 3h, 3e και 0665), από τα οποία επιλέχθησαν τα επτά. Στην παρούσα Διδακτορική Διατριβή αξιολογήθηκε η εντομοκτόνος δράση των νέων παραγώγων του πυρρολίου 3a, 3g, 3i, 3k, 3l, 3m και 3h, κατά των ακμαίων ή προνυμφών Tribolium confusum Jaquelin du Val (Coleoptera: Tenebrionidae) και των προνυμφών Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) σε διαφορετικές δόσεις (0,1, 1 και 10 ppm), διαστήματα εκθέσεως (7, 14 και 21 ημέρες ή 1, 2, 7, 14 και 21 ημέρες), θερμοκρασίες (20, 25 και 30oC), επίπεδα σχετικής υγρασίας (ΣΥ) (55 και 75%) και προϊόντα (σιτάρι, αραβόσιτος, κριθάρι).Τα παράγωγα του πυρρολίου 3i και 3k είχαν χαμηλή τοξικότητα κατά των ακμαίων T. confusun σε όλους τους συνδυασμούς της θερμοκρασίας και της ΣΥ που εξετάστηκαν στο σιτάρι. Ωστόσο, αυτές οι ενώσεις παρουσίασαν υψηλή εντομοκτόνο δράση εναντίον των προνυμφών και των δύο ειδών που εξετάστηκαν. Το παράγωγο του πυρρολίου 3a επέδειξε την υψηλότερη εντομοκτόνο δράση, ενώ τα 3g, 3l, 3m και 3h προκάλεσαν παρόμοια θνησιμότητα κατά των προνυμφών Τ. confusum. Γενικώς, τα παράγωγα αυτά του πυρρολίου προκάλεσαν τα υψηλότερα επίπεδα θνησιμότητας στους 30oC, ενώ τα 3i και 3k στους 25oC. Επίσης, το επίπεδο 75% ΣΥ μείωσε την αποτελεσματικότητα των παραγώγων του πυρρολίου, ενώ το 55% την αύξησε. Γενικώς, όλα τα δοκιμασθέντα παράγωγα του πυρρολίου ήταν πιο αποτελεσματικά στο κριθάρι, όπου η θνησιμότητα των προνυμφών ή των ακμαίων Τ. confusum και των προνυμφών Ε. kuehniella ήταν 100%, ενώ στον αραβόσιτο παρατηρήθηκαν τα χαμηλότερα ποσοστά θνησιμότητας.Όλες οι εξετασθέντες ενώσεις διαφέρουν στον εστερικό υποκαταστάτη και στην άλκυλο ομάδα που συνδέεται στο θείο. Φαίνεται ότι ο αρωματικός χαρακτήρας του πυρρολίου και η επίπεδη δομή του είναι απαραίτητα για τη δραστικότητα των ενώσεων, δεδομένου ότι τα παράγωγα του πυρρολίου 2a-syn, 2a-anti, 2f-syn και 2f-anti, δεν ήταν τοξικά. Κατέστη προφανές ότι η εντομοκτόνος δράση των παραγώγων του πυρρολίου σχετίζεται με το γεγονός ότι το άτομο του αζώτου δεν πρέπει να υποκατασταθεί. Στην πραγματικότητα, το αρωματικό παράγωγο του πυρρολίου 0665, το οποίο έχει ένα άτομο αζώτου υποκατεστημένο με άλκυλο ομάδα, είχε ως αποτέλεσμα τη μέτρια τοξικότητα έναντι όλων των δοκιμασθέντων ειδών εντόμων. Εν τούτοις, οι πιο τοξικές ενώσεις βρέθηκαν να είναι οι 3a, 3g, 3h, 3i, 3k, 3l και 3m, οι οποίες διατηρούν τα δύο προαναφερθέντα χαρακτηριστικά. Τα αποτελέσματα της παρούσας Διδακτορικής Διατριβής καταδεικνύουν ότι νέα παράγωγα του πυρρολίου θα μπορούσαν να χρησιμεύσουν ως προστατευτικά των σπόρων κατά των T. confusum και E. kuehniella, σοβαρών εχθρών των αποθηκευμένων προϊόντων, υπό συγκεκριμένες βιοτικές και αβιοτικές συνθήκες.

CAPRIC ACID BLENDED INTO FOODSTUFF FOR CONTROL OF AN INSECT PEST, TRIBOLIUM CONFUSUM (COLEOPTERA: TENEBRIONIDAE)

1967 ◽  
Vol 99 (9) ◽  
pp. 994-999 ◽  
Author(s):  
H. L. House ◽  
A. R. Graham
Keyword(s):  
Insect Pests ◽  
Insect Pest ◽  
Capric Acid ◽  
Tribolium Confusum ◽  
Whole Wheat Flour ◽  
Whole Wheat ◽  
Metabolic Systems ◽  
Brewers Yeast ◽  
Control Insect ◽  
Coleoptera Tenebrionidae

AbstractCapric acid added to a food – whole wheat flour and dried brewers’ yeast – to constitute 2.5% or more of the foodstuff killed all Tribolium confusum Jacquelin du Val within 8 weeks. Lesser amounts of capric acid resulted in different degrees of mortality. By the end of 4 weeks similar results were inevitable when varied levels of capric acid were added to two representative dehydrated foods, tapioca pudding and macaroni and cheese. This uncustomary use of a long-recognized insecticidal fatty acid has some merit: for immixed with foodstuff it can control insect pests, and yet it, as a natural constituent of milk etc., is no stranger to metabolic systems of higher animals, so probably is not too hazardous to humans.

scholarly journals Repellent and fumigant toxic potential of three essential oils against Ephestia kuehniella

2019 ◽  
Vol 27 (4) ◽  
pp. 349-353
Author(s):  
H. Bouzeraa ◽  
M. Bessila-Bouzeraa ◽  
N. Labed
Keyword(s):  
Essential Oils ◽  
Insect Pests ◽  
Larval Mortality ◽  
Ephestia Kuehniella ◽  
Fumigant Toxicity ◽  
Stored Grain ◽  
Median Lethal Concentrations ◽  
Lepidoptera Pyralidae ◽  
Ruta Montana ◽  
Toxic Potential

Essential oils, when used as bio-insecticides in the control of insect pests of stored grains have shown specificity and variation in the potentiality of their mode of action. In the present study, three essential oils extracted from three aromatic plants of different families, white wormwood (Artemisia herba alba, Asteraceae), oregano (Origanum vulgare, Lamiaceae) and rue (Ruta montana, Rutaceae), were evaluated for their repellent and fumigant toxic potential against the flour moth larvae, Ephestia kuehniella (Lepidoptera, Pyralidae), under laboratory conditions. The essential oils extraction was done by the hydrodistillation method. The repellent activity was carried out in Petri dishes using a filter paper treated with different oil dilutions (25, 75, 100, 120, 130, 150 µL/mL). The fumigant toxicity was determined on three concentrations (50, 130, 150 µL/L air). Two plants were shown to be repellent against the E. kuehniella larvae. Origanum oil was the most repellent with 67% of repellency rate followed by Artemisia oil (46%) at 120µL/mL after 2 hours of exposure. The oil of R. montana had an attractant activity against the larvae and was the most toxic with 56.7% of larval mortality in the first 24 hours. The median lethal concentrations (LC50) recorded were 11.6, 175.4 and 1100.0 µL/L air for the plant oils R. montana, O. vulgare and A. herba alba, respectively. R. montana and O. vulgare essential oil are shown to be efficient with high toxic and repellent properties against E. kuehniella larvae. Their specific potential could be integrated in the selection of the best bioinsecticides for the optimum protection of stored grain.

scholarly journals JENIS DAN POPULASI SERANGGA HAMA PADA BERAS DI GUDANG TRADISIONAL DAN MODERN DI PROVINSI GORONTALO

EUGENIA ◽  
2012 ◽  
Vol 21 (3) ◽  
Author(s):  
Jems Ilato ◽  
Moulwy F. Dien ◽  
Caroulus S. Rante
Keyword(s):  
Insect Pests ◽  
Sitophilus Oryzae ◽  
Survey Method ◽  
Time Interval ◽  
Carpophilus Hemipterus ◽  
Pest Insect ◽  
Rice Pests ◽  
Lepidoptera Pyralidae ◽  
Insect Populations ◽  
Coleoptera Tenebrionidae

ABSTRACT The quality and quantity of rice as a source of food for most of Indonesian people are closely connected with the activity of insect pests in Warehouse. This study aims to determine the species and insect pests populations on Rice at Traditional and Modern Warehouse in Province of Gorontalo. The study used a survey method shelter/rice warehouse in Mootilango district, Boliohuto District, and Tolangohula district, Gorontalo province. Sampling was conducted in a purposive sampling is to take a sample of the suspected rice pests. Sampling was carried out 4 times with a time interval of 2 weeks. The research found six species of insect pests on rice commodities in Gorontalo regency consisting of 5 species of the order Coleoptera and 1 type of the order Lepidoptera. The results show that the identification of insect pests found are Sitophilus oryzae (Coleoptera; Curculionidae), Tribolium castaneum (Coleoptera: Tenebrionidae), Carpophilus hemipterus (Coleoptera: Nitidulidae) Oryzaephilus sp. (Coleoptera; Silvanidae), Ahasverus sp. (Coleoptera; Cucujidae), Corcyra cephalonica (Lepidoptera; Pyralidae). Average highest pest insect populations, respectively S. oryzae (54.60 individuals), Tribolium sp. (13.85 individuals), Oryzaephilus sp. (4.52 individuals), Ahasverus sp. (3.42 individuals), Corcyra sp. (2.42 individuals) and C. hemipterus (6.94 individuals), while the highest populations of insect pests found in traditional 16.40 modern warehouses 12.34 individual Keywords : insect pests, rice, traditional and modern werehouse

scholarly journals Development and reproduction of Podisus distinctus (Heteroptera: Pentatomidae) fed on larva of Bombyx mori (Lepidoptera: Bombycidae)

2004 ◽  
Vol 64 (2) ◽  
pp. 237-242 ◽  
Author(s):  
M. C. Lacerda ◽  
A. M. R. M. Ferreira ◽  
T. V. Zanuncio ◽  
J. C. Zanuncio ◽  
A. S. Bernardino ◽  
...  
Keyword(s):  
Biological Control ◽  
Life Cycle ◽  
Relative Humidity ◽  
Bombyx Mori ◽  
Insect Pests ◽  
Males And Females ◽  
Heteroptera Pentatomidae ◽  
Bombyx Mori L ◽  
Chemical Products ◽  
Coleoptera Tenebrionidae

Biological control has been reducing the use of chemical products against insect pests, specially predatory Pentatomidae. Species of this group can present high variations in their life cycle as a result of their diet. Thus, the objective of this research was to study nymph development and reproduction of Podisus distinctus (Stäl, 1860) (Heteroptera: Pentatomidae) fed on Bombyx mori L., 1758 (Lepidoptera: Bombycidae) larvae (T1), compared to those fed on Tenebrio molitor L., 1758 (Coleoptera: Tenebrionidae) (T2) and Musca domestica L., 1758 (Diptera: Muscidae) larvae (T3) at a temperature of 25 ± 0.5ºC, relative humidity of 70 ± 2%, and photophase of 12 h. Predators fed on B. mori showed duration of the nymph phase (18.68 ± 1.02) similar to those fed on T. molitor (18.32 ± 1.49). Pre-oviposition and oviposition periods and number of egg masses, besides eggs and nymphs per female, were higher with B. mori (5.83 ± 2.02; 15.00 ± 7.40; 8.42 ± 1.84; 296.69 ± 154.75; and 228.55 ± 141.04, respectively) while longevity of males and females of P. distinctus was 25.76 ± 16.15 and 35.00 ± 16.15 days with T. molitor, and 20.57 ± 13.60 and 23.46 ± 12.35 days with B. mori, respectively.

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