Pest and natural enemy: how the fat bodies of both the southern armyworm Spodoptera eridania and the predator Ceraeochrysa claveri react to azadirachtin exposure

Scudeler, Elton Luiz; Garcia, Ana Silvia Gimenes; Padovani, Carlos Roberto; Santos, Daniela Carvalho dos

doi:10.1007/s00709-019-01347-5

Cited by 11 publications

(16 citation statements)

References 61 publications

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“…These aforementioned changes are similar to the changes described in different cell types of arthropods in which the effects of azadirachtin, plant-derived toxins and insecticides are evaluated. 16,17,25,[42][43][44]…”

Section: Discussionmentioning

confidence: 99%

Azadirachtin‐based insecticide impairs testis morphology and spermatogenesis of the southern armyworm Spodoptera eridania (Lepidoptera: Noctuidae)

Scudeler

Daquila

Carvalho

et al. 2023

Pest Management Science

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Background: In the search for alternative tools for integrated pest management, azadirachtin, a botanical insecticide, has been used with the most promising activity against Spodoptera spp., but the mechanism of cytotoxicity on reproductive organs remains unclear. Spodoptera eridania (Stoll, 1782) is a polyphagous pest with great economic importance that has become an important target to elucidate the action of azadirachtin on the reproductive organs of insect pests, helping to understand the deleterious effects caused by its exposure. This study evaluated the effects of chronic exposure to azadirachtin on the morphology and ultrastructure of S. eridania larval testes as well as larval development.Results: Azadirachtin exposure (6 or 18 mg a.i. L −1 ) caused a progressive increase in cumulative mortality and reduced gain in body mass after 5 days. Testicular structure indicated a reduction in their size with internal morphological changes such as spermatogonia, spermatogonial, spermatocytes and spermatid cysts in degeneration. The occurrence of cell death in germ and somatic cells was evidenced by the TUNEL technique. Electron microscopy revealed changes in cystic cells, such as cytoplasmic membrane rupture and cytoplasmic vacuolization. Chromatin compaction, changes in the rough endoplasmic reticulum and Golgi complex cisternae were observed in germ cells. Apoptotic bodies occurred between germ cell cysts.Conclusion: Azadirachtin damaged the testes of S. eridania larvae, and these changes compromised spermatogenesis and consequently the development of the reproductive potential of this specimen, making azadirachtin a promising botanical insecticide for application in integrated pest management programs.

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Section: Discussionmentioning

confidence: 99%

Azadirachtin‐based insecticide impairs testis morphology and spermatogenesis of the southern armyworm Spodoptera eridania (Lepidoptera: Noctuidae)

Scudeler

Daquila

Carvalho

et al. 2023

Pest Management Science

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“…LEONARD, Janet L. Sexual conflict and the mating systems of simultaneously hermaphroditic gastropods. American Malacological Bulletin, v. 9, n. 1, p. [45][46][47][48][49][50][51][52][53][54][55][56][57][58]1991. Resumo: A presente pesquisa teve como objetivo analisar a concepção dos moradores do Bairro Caeira, no município de Jacobina -BA, acerca da incidência da Leishmaniose…”

Section: Materiais E Métodosunclassified

“…As plantas ornamentais identificadas somam 74 espécies distribuídos em 66 gêneros e 40 famílias como observado na Tabela 03. Entre essas,54 são exóticas e apenas 20 são nativas do Brasil, sendo três endêmicas, onde o hábito herbáceo é o mais observado (47%). As famílias com maior número de espécies nessa categoria foi Araceae com sete espécies, e Amaryllidaceae, Asparagaceae e Cactaceae com cinco cada.Tabela 03: Espécies cultivadas com finalidade ornamental no sítio Nova Olinda -Sousa -PB.…”

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Antropização de microbacia urbanizada dos Rios Santo Antonio e Santa Tereza do Município de Gurupi-TO: Indicadores fitossociológicos

Bessa¹,

Coelho²,

Limeira³

et al. 2020

Meio Ambiente E Seus Desafios: Estudos Contemporâneos – Volume 2

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Section: Materiais E Métodosunclassified

Concepção da população do Bairro Caeira em Jacobina Bahia acerca da Leishmaniose Visceral e utilização de método natural no combate ao mosquito flebótomo

Santos¹,

Souza²,

Homero³

et al. 2020

Meio Ambiente E Seus Desafios: Estudos Contemporâneos – Volume 2

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Pest and natural enemy: how the fat bodies of both the southern armyworm Spodoptera eridania and the predator Ceraeochrysa claveri react to azadirachtin exposure

Cited by 11 publications

References 61 publications

Azadirachtin‐based insecticide impairs testis morphology and spermatogenesis of the southern armyworm Spodoptera eridania (Lepidoptera: Noctuidae)

Azadirachtin‐based insecticide impairs testis morphology and spermatogenesis of the southern armyworm Spodoptera eridania (Lepidoptera: Noctuidae)

Antropização de microbacia urbanizada dos Rios Santo Antonio e Santa Tereza do Município de Gurupi-TO: Indicadores fitossociológicos

Concepção da população do Bairro Caeira em Jacobina Bahia acerca da Leishmaniose Visceral e utilização de método natural no combate ao mosquito flebótomo

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