Performance of the parasitoid Oomyzus sokolowskii (Hymenoptera: Eulophidae) on its host Plutella xylostella (Lepidoptera: Plutellidae) under laboratory conditions

Sow, Gallo; Arvanitakis, Laurence; Niassy, Saliou; Diarra, Karamoko; Bordat, Dominique

doi:10.1017/s1742758412000422

Cited by 7 publications

(7 citation statements)

References 30 publications

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“…Avant l'application du traitement, au moment où les plants de chou étaient pratiquement très jeunes, P. xylostella était l'espèce la plus abondante dans la parcelle. D'après Sow et al (2013), les femelles de P. xylostella préfèrent les jeunes plantes lors de la ponte. Ceci pourrait s'expliquer par le fait que la teneur en glucosinolate dans la plante avec l'évolution de la pomme constituerait un facteur limitant la ponte des femelles (Sow et al, 2013).…”

Section: Discussionunclassified

“…D'après Sow et al (2013), les femelles de P. xylostella préfèrent les jeunes plantes lors de la ponte. Ceci pourrait s'expliquer par le fait que la teneur en glucosinolate dans la plante avec l'évolution de la pomme constituerait un facteur limitant la ponte des femelles (Sow et al, 2013). Ces observations montrent que l'abondance des larves de P. xylostella dépend non seulement du traitement des parcelles mais également du stade de développement des plants.…”

Section: Discussionunclassified

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Effet des extraits aqueux de <i>Calotropis procera</i> sur les principaux ravageurs du chou en culture au Sénégal

Ngom¹,

Diome²,

Diop³

et al. 2020

Int. J. Bio. Chem. Sci

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Au Sénégal, le chou est l’un des légumes les plus cultivés et consommés, de par son cycle relativement court (60-90 jours après repiquage) et sa possibilité d’être cultivé toute l’année. Cependant il est attaqué par plusieurs ravageurs tels que Plutella xylostella (L.) (Lepidoptera, Plutellidae), Hellula undalis (F.) (Lepidoptera, Pyralidae) et Spodoptera littoralis (B.) (Lepidoptera, Noctuidae). L’objectif de cette étude était de contribuer à la lutte contre ces ravageurs du chou en culture dans la zone des Niayes en utilisant les extraits aqueux à base de feuilles de Calotropis procera (Apocynaceae). L’étude a été menée sur 28 parcelles élémentaires dans la zone des Niayes (durant la période du 3 janvier au 22 mars 2019). Les formulations d’extrait de feuilles de C. procera utilisant comme solvant l’eau de robinet et l’eau de puits (ER et EP), appliquées à des temps différents le matin (ERM, EPM) et le soir (ERS, EPS) ont montré leurs efficacités sur les larves de P. xylostella et H. undalis. Par contre, les extraits ne sont pas efficaces sur S. littoralis (P-value= 0,672). En plus de leurs effets biocides, les extraits à base de feuilles de C. procera semblent accélérer la croissance des plants de chou. La nature du solvant et la période du traitement n’ont pas montré une différence significative.Mots clés : Biocide, Brassicassée, Niayes, lutte biologique English title: Aqueous extracts effect of Calotropis procera on the principal cabbage pests in culture in Senegal In Senegal, the cabbage is one of the most cultivated and consumed vegetables, from its relatively short cycle (60-90 days after road repair) and the possibility of being cultivated all the year. However it is attacked by several pests such as Plutella xylostella (L.) (Lepidoptera, Plutellidae), Hellula undalis (F.) (Lepidoptera, Pyralidae) and Spodoptera littoralis (B.) (Lepidoptera, Noctuidae). The objective of this study was to contribute on protect against cabbage pests in culture in the zone of Niayes by using the aqueous extracts containing sheets of Calotropis procera (Apocynaceae). The study was undertaken on 28 elementary pieces to in the zone of Niayes (during the period of January 3 at March 22, 2019). The formulations of extract using as solvent the water of tap and the water of well (ER and EP), applied to different times morning (ERM, EPM) and evening (ERS, EPS) showed their effectiveness on larvae of P. xylostella and H. undalis. On the other part S. littoralis was resistant to treatment (P=0,672) confirms it. In addition to their biocides effects, the extracts containing sheets of C procera seem accelerated the cabbage patches growth. The nature of solvent and the treatment period did not show a significant difference.Keywords: Biocide, Brassicasseae, Niayes, biological control

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Section: Discussionunclassified

Effet des extraits aqueux de <i>Calotropis procera</i> sur les principaux ravageurs du chou en culture au Sénégal

Ngom¹,

Diome²,

Diop³

et al. 2020

Int. J. Bio. Chem. Sci

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“…The mean ± SE represents 30 independent replications. The different lower-case letters beside the curves denote significant differences at a = 0.05 Parasitism of Tetrastichus brontispae 653 ages for parasitism ranged from 24 to 120 h (Sow et al 2013). The parasitism rates of T. brontispae on B. longissima were not affected by the age of T.…”

Section: Discussionmentioning

confidence: 99%

Effects of rearing conditions on the parasitism of Tetrastichus brontispae on its pupal host Octodonta nipae

Tang

Hou

2014

BioControl

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Octodonta nipae (Maulik) (Coleoptera: Chrysomelidae) is currently a serious invasive pest of palm plants in southern China. Although previous studies reported that Tetrastichus brontispae Ferriere (Hymenoptera: Eulophidae) could successfully parasitize the pupae of O. nipae, little is known of the potential for T. brontispae to control this pest. To understand the interaction between T. brontispae and O. nipae, the effects of parasitoid feeding regimes, host age and density, parasitoid age and density, and cold storage on the parasitism of T. brontispae were investigated. Our results indicate that a supply of either glucose or sucrose increased the longevity and fecundity of T. brontispae. The parasitoid preferred one-day-old host pupae and its fecundity increased with increasing host or parasitoid female density. Extended cold storage negatively affected the parasitism of T. brontispae. These results demonstrate how to efficiently raise T. brontispae and will contribute to the effective management of O. nipae.

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“…Prior to treatment, when cabbage plants were relatively young, P. xylostella was the most abundant species in the plot. According to Sow, et al [7] females of P. xylostella have a preference for young plants during spawning. This can be related to cabbage content in glucosinolate, which increases when the plant develops, and this would function as a limiting factor in female spawning [7].…”

Section: Effects Of Treatments On Plutella Xylostellamentioning

confidence: 99%

“…Larvae of this micro-Lepidoptera are defoliating and can cause up to 90% loss of production [5,6]. In Senegal, this rate is estimated to be between 51% and 94% [7]. Consequently, market gardeners, in order to protect their crops, use chemicals in an utterly disastrous way.…”

Section: Introductionmentioning

confidence: 99%

Effect of Biocidal Substances on Population Dynamics of Plutella Xylostella Linnaeus, 1758, Auxiliary Insects, and Cabbage Production in the Suburban Area of Dakar

Faye

Diome

Thiam

et al. 2022

5003

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This study was conducted to determine the effects of biopesticides, used in the control of Plutella xylostella, major bioaggressor of cabbage, on its auxiliaries as well as on cabbage quality. It took place in a field of 65 m2, located in Malika, peri-urban area of Dakar. Treatments, based on Crateva religiosa (200g/l), Calotropis procera (400g/l), a mixture of the two products, and the control, were performed every two weeks on a random block device. Analysis of the results was done with the Rstudio software. Results showed that untreated plots were more infested with Plutella xylostella larvae (p-value = 0.01271). Efficacy of Calotropis procera on P. xylostella larvae has been demonstrated. The effect was all the more interesting since auxiliaries were not affected by treatments, as the regular sampling revealed. A satisfactory agronomic result was obtained at the end of this test, with as indicator, a much larger harvest from the treated plots.

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Performance of the parasitoid Oomyzus sokolowskii (Hymenoptera: Eulophidae) on its host Plutella xylostella (Lepidoptera: Plutellidae) under laboratory conditions

Cited by 7 publications

References 30 publications

Effet des extraits aqueux de <i>Calotropis procera</i> sur les principaux ravageurs du chou en culture au Sénégal

Effet des extraits aqueux de <i>Calotropis procera</i> sur les principaux ravageurs du chou en culture au Sénégal

Effects of rearing conditions on the parasitism of Tetrastichus brontispae on its pupal host Octodonta nipae

Effect of Biocidal Substances on Population Dynamics of Plutella Xylostella Linnaeus, 1758, Auxiliary Insects, and Cabbage Production in the Suburban Area of Dakar

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