Side-effects of pesticides used in the organic system of production on Apis mellifera Linnaeus, 1758

Efrom, Caio Fábio Stoffel; Meirelles, Rafael Narciso; Ourique, Cláudia Bernardes

doi:10.1590/s1516-89132012000100005

Cited by 15 publications

(13 citation statements)

References 12 publications

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“…in female adults of another Diptera, Lutzomyia longipalpis (Lutz and Neiva). Previously, azadirachtin was reported to impair, with variable effects, the survival of different insect species . Strong variations in insects' susceptibility to azadirachtin were noted depending on insect order, species, formulation, or the method of application .…”

Section: Discussionmentioning

confidence: 99%

“…Previously, azadirachtin was reported to impair, with variable effects, the survival of different insect species . Strong variations in insects' susceptibility to azadirachtin were noted depending on insect order, species, formulation, or the method of application . Sensitivity of insects to insecticides varies also with the regulation of plasma membrane receptor and/or ion channels, penetration rate through the cuticle, absorption by insects, transport in tissues of the body and metabolism …”

Section: Discussionmentioning

confidence: 99%

“…9,[11][12][13][14][44][45][46][47][48][49][50][51] Strong variations in insects' susceptibility to azadirachtin were noted depending on insect order, species, formulation, or the method of application. 9,[11][12][13][14][25][26][27][28][29][44][45][46][47][48][49][50][51] Sensitivity of insects to insecticides varies also with the regulation of plasma membrane receptor 52 and/or ion channels, 34,52 penetration rate through the cuticle, 23 absorption by insects, 23 transport in tissues of the body 23 and metabolism. 23 Several mechanisms may be at play in causing acute azadirachtin toxicity.…”

Section: Discussionmentioning

confidence: 99%

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Azadirachtin effects on mating success, gametic abnormalities and progeny survival in Drosophila melanogaster (Diptera)

Oulhaci

Denis

Kilani-Morakchi

et al. 2017

Pest Management Science

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BACKGROUND: Azadirachtin is a prominent natural pesticide and represents an alternative to conventional insecticides. It has been successfully used against insect pests. However, its effects on reproduction require further analysis. Here we investigated lethal and sublethal effects of azadirachtin, on treated adults in a model insect, Drosophila melanogaster (Meigen). Dose-mortality relationships as well as several parameters of reproduction (mating, spermatogenesis, oogenesis and fertility) were examined.RESULTS: Neem-Azal, a commercial formulation of azadirachtin, applied topically on newly emerged adults, increased mortality with a positive dose-dependent relationship. The LD 50 (0.63 g) was determined 24 h after treatment using a non-linear regression. Adults surviving this dose had a mating success that was divided by 3 and a progeny production reduced by half when males were treated, and even more when females were treated. When combining probability of survival, of mating and reduced progeny, it appeared that LD 50 induced a 98% reduction in reproductive rates. Reduced progeny was partially explained by the effect of adult treatment on gametes number and abnormalities. The number of cysts and the apical nuclei positions within the cysts decreased by 29.7% and 20%, respectively, in males. In females, the number of oocytes per ovary and the volume of basal oocytes also decreased by 16.1% and 32.4%, respectively. CONCLUSION: Azadirachtin causes significant toxic effects in both sexes and decreases the fecundity and fertility of D. melanogaster. Females are more sensitive to azadirachtin.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Azadirachtin effects on mating success, gametic abnormalities and progeny survival in Drosophila melanogaster (Diptera)

Oulhaci

Denis

Kilani-Morakchi

et al. 2017

Pest Management Science

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“…Ainsi, chez les abeilles, des altérations comportementales et morphologiques ont été observées chez les individus soumis à l'azadirachtine, mais aucun effet sur la viabilité (pour les abeilles ouvrières), le vol ou sur la respiration n'a été mis en évidence [36,37]. La sensibilité des insectes à l'azadirachtine est étroitement liée à divers facteurs, comme le mode d'exposition, la concentration de la molécule et l'espèce d'abeilles… L'azadirachtine reste ainsi considérée comme le pesticide le moins nocif visà-vis d'Apis mellifera, l'abeille mellifère commune [38]. Chez la drosophile, pourtant, l'azadirachtine affecte la reproduction des mâles et des femelles, en altérant la fécondité en induisant des troubles de la gamétogenèse et en diminuant leur fertilité post-accouplement [24].…”

Section: Revues … Et Les Organismes Non Visésunclassified

L’azadirachtine, un pesticide naturel aux effets multiples

et al. 2020

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Une littérature abondante traite de l’impact négatif des pesticides conventionnels, très efficaces dans la gestion des ravageurs mais responsables d’une large pollution environnementale. Les pesticides d’origine naturelle qui auraient un moindre impact environnemental suscitent ainsi un intérêt majeur. Parmi ceux-ci, l’azadirachtine, commercialisée sous diverses formulations (huile de neem, Neem-Azal, Bioneem, etc.) reste la molécule la plus recommandée dans les agro-écosystèmes. L’argument d’une innocuité environnementale de l’azadirachtine est cependant nuancé par des effets collatéraux qui, bien que controversés, sont notables sur des organismes non ciblés.

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“…Current trends in organic agriculture have therefore recognized a need for looking for alternative methods of pest control (Atanasov et al, 2005). Such organic systems, which aim for sustainability, while preserving or increasing biological diversity, and minimization of all forms of contamination, make it critical to search for alternative techniques of control, selective and not harmful, especially not to populations of beneficial insects, such as natural enemies and pollinators (Efrom et al, 2012). Knowing the effects that biological insecticides, applied alone or in combination with other biological products, have on harmful or beneficial insects, and the use of selective products are important for the sustainability of organic systems.…”

Section: Introductionmentioning

confidence: 99%

Systems of organic farming in spring vetch II: Biological response of Aeolothrips intermedius Bagnall and Coccinella septempunctata L.

Nikolova

Georgieva

2015

PESTIC PHYTOMED

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SummaryThe effects of four systems of organic farming of spring vetsch on Aeolothrips intermedius Bagnall (Thysanoptera: Aeolothripidae) and Coccinella septempunctata L. (Coleoptera: Coccinellidae) population density and the toxicity of several products on predatory insects were studied. The variants were: Control (without using any biological products); combined treatment with Polyversum (biological foliar fertilizer) and Biofa (biological plant growth regulator); treatment with NeemAzal T/S (biological insecticide, a.i. azadirachtin) and treatment with a combination of NeemAzal with Polyversum and Biofa. Variant V was a conventional farming system in which a combination of Nurelle D (synthetic insecticide), Masterblend (foliar fertilizer) and Flordimex 420 (growth regulator) was used as a standard treatment. In the organic farming system that included treatment of plants with the biological insecticide NeemAzal (azadirachtin), the reduction in A. intermedius abundance was 20.7% when it was applied alone and 24.6 % in combination with the organic products Polyversum and Biofa. NeemAzal achieved a lower reduction in the counts of predatory ladybirds C. septempunctata, from 14.9% (alone) to 21.9% (combination). The biological insecticide, applied alone or in combination, was mostly harmless and rarely harmful to A. intermedius. NeemAzal manifested harmlessness to C. septempunctata as its toxic action did not exceed 25%. An analysis of variance regarding product toxicity to A. intermedius and C. septempunctata demonstrated that the type of treatment (the application of insecticides alone or in combination) had the strongest effect on product toxicity. Тhe use of neem-based insecticides can be a substantial contribution towards preservation of biodiversity in ecosystems.

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Side-effects of pesticides used in the organic system of production on Apis mellifera Linnaeus, 1758

Abstract: This study aimed to evaluate the effects of pesticides, used in the organic system, on Apis mellifera under laboratory conditions. Four multiple (0.25x, 0.5x, 1x and 2x)

Cited by 15 publications

References 12 publications

Azadirachtin effects on mating success, gametic abnormalities and progeny survival in Drosophila melanogaster (Diptera)

Azadirachtin effects on mating success, gametic abnormalities and progeny survival in Drosophila melanogaster (Diptera)

L’azadirachtine, un pesticide naturel aux effets multiples

Systems of organic farming in spring vetch II: Biological response of Aeolothrips intermedius Bagnall and Coccinella septempunctata L.

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