Effects of Methoprene on Female Reproduction, Longevity and F1 Progeny Development in the Cotton Bollworm MothHelicoverpa armigera(Hübner) (Lepidoptera: Noctuidae)

Wang, L. J.; Chen, Y.; Ma, Weihua; Zhu, Zhi-Hong; Lei, Cui

doi:10.4001/003.023.0131

Cited by 4 publications

(1 citation statement)

References 31 publications

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“…consequences that entail disadvantages due to high use of toxic substances, being unselective and with slow environmental degradation, which leads to imbalance in the agricultural ecosystems and damage to farmers (Saber, 2011;Wang, Chen, Ma, Zhu, & Lei, 2015;Amichot, Curty, Benguettat-Magliano, Galleti, & Wajnberg, 2016). Thus, alternative measures must be adopted and biological control using parasitoids of Trichogramma eggs, is an important measure because they are key species in the regulation of the populations of several species of Lepidoptera pests, however, there are still insufficient studies involving the use of Trichogramma spp., on H. armigera (Bueno, Parra, Bueno, & Haddad, 2009;Molnár, López, Gámez, & Garay, 2016).…”

Section: Introductionmentioning

confidence: 99%

Biological parameters of three Trichogramma pretiosum strains (Riley, 1879) (Hymenoptera: Trichogrammatidae) on eggs Helicoverpa armigera (Hübner, 1805) (Lepidoptera: Noctuidae)

Carvalho

Silva

Veras

et al. 2017

Acta Sci. Biol. Sci.

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ABSTRACT. This project has an objective to study the biological parameters of Trichogramma pretiosum on eggs of H. armigera. The three strains of T. pretiosum were evaluated: TM, TMC and TLEM, from different places. The experimental establishing was completely randomizing with twenty repeats per treatment, being used by a female parasitoid by repetition and later on they were offered 20 H. armigera eggs. The experiment was kept on BOD cameras to 25 ± 2° C, UR 60 ± 10% and photo phase of 14 hours. Evaluating the following biological parameters: parasitism percentage, emergency percentage, number of adults emerged per egg, sex ratio, viability, and longevity and cycle duration. The parasitism percentage, viability and number of individuals per egg were higher for TM and TMC. The TMC strain presented a larger sex ratio proportion, not being different statistically from the TM stream. The longevity of the strain TM was different regarding the others. There was no variation regarding the cycle duration. Therefore, according with the evaluated biologic parameters, it is concluded that Trichogramma pretiosum strain TM obtained a better egg development of H. armigera on laboratory conditions. Palavras-chave: Controle biológico, lagarta da soja, parasitoide de ovos.Parâmetros biológicos de três linhagens de Trichogramma pretiosum (Riley, 1879) (Hymenoptera: Trichogrammatidae) sobre ovos de Helicoverpa armigera (Hübner, 1805) (Lepidoptera: Noctuidae) RESUMO. Este trabalho teve como objetivo estudar os parâmetros biológicos de Trichogramma pretiosum em ovos de H. armigera. As três linhagens de T. pretiosum avaliadas foram: TM, TMC e TLEM, oriundas de diferentes localidades. O delineamento experimental foi inteiramente casualizado com vinte repetições por tratamento, sendo utilizada uma fêmea do parasitoide por repetição e posteriormente foram oferecidos 20 ovos de H. armigera. O experimento foi mantido em câmaras BOD a 25 ± 2° C, UR 60 ± 10% e fotofase de 14 horas. Avaliou-se os seguintes parâmetros biológicos: porcentagem de parasitismo, porcentagem de emergência, número de adultos emergidos por ovo, razão sexual, viabilidade, longevidade e duração do ciclo. A porcentagem de parasitismo e viabilidade e número de indivíduos por ovo foram superiores para as linhagens TM e TMC. A linhagem TMC apresentou a maior proporção para razão sexual, não diferindo estatisticamente da linhagem TM. A longevidade da linhagem TM se destacou em relação às demais. Não houve variação com relação a duração do ciclo. Assim de acordo com os parâmetros biológicos avaliados, conclui-se que Trichogramma pretiosum linhagem TM obteve o melhor desenvolvimento nos ovos de H. armigera em condições de laboratório.

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Section: Introductionmentioning

confidence: 99%

Biological parameters of three Trichogramma pretiosum strains (Riley, 1879) (Hymenoptera: Trichogrammatidae) on eggs Helicoverpa armigera (Hübner, 1805) (Lepidoptera: Noctuidae)

Carvalho

Silva

Veras

et al. 2017

Acta Sci. Biol. Sci.

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The effects of diet and semiochemical exposure on male Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) metabolic rate at a range of temperatures

Dacre,

Duncan,

Weldon

2024

Journal of Insect Physiology

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Target Detection and Analysis of Intelligent Agricultural Vehicle Movement Obstacle Based on Panoramic Vision

2019

INMATEH

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Agricultural automation and intelligence have a wide range of connotations, involving navigation, image, model, strategy and other engineering disciplines. With the development of modern agriculture are applied in many engineering areas. The operating environment of agricultural vehicles is very complex, especially as they often face obstacles, affecting the intelligent operation of agricultural vehicles. The traditional obstacle detection mostly uses the limited detection algorithm, in the case of which it is difficult to achieve the moving target detection of panoramic vision. In this paper, mean shift algorithm is selected to detect the moving obstacles of intelligent agricultural vehicles, and adaptive colour fusion is introduced to optimize the algorithm to solve the problems of mean shift. In order to verify the effect of the improvement and application of the algorithm, the video image obtained by the intelligent agricultural vehicle is selected for the simulation experiment, and the best combination (- 0.8.0.2) is obtained for the unequal spacing sampling method. In the process of colour selection, the coefficient needs to be adjusted continuously to improve the tracking accuracy of the algorithm. Further it can be seen that when using a variety of different quantitative methods for comparative analysis, the quantitative method of HIS-360 level is determined.

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Effects of Methoprene on Female Reproduction, Longevity and F1 Progeny Development in the Cotton Bollworm MothHelicoverpa armigera(Hübner) (Lepidoptera: Noctuidae)

Cited by 4 publications

References 31 publications

<b>Biological parameters of three <i>Trichogramma pretiosum</i> strains (Riley, 1879) (Hymenoptera: Trichogrammatidae) on eggs <i>Helicoverpa armigera</i> (Hübner, 1805) (Lepidoptera: Noctuidae)

<b>Biological parameters of three <i>Trichogramma pretiosum</i> strains (Riley, 1879) (Hymenoptera: Trichogrammatidae) on eggs <i>Helicoverpa armigera</i> (Hübner, 1805) (Lepidoptera: Noctuidae)

The effects of diet and semiochemical exposure on male Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) metabolic rate at a range of temperatures

Target Detection and Analysis of Intelligent Agricultural Vehicle Movement Obstacle Based on Panoramic Vision

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