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321149

EFFECT OF VERTIMEC®, A MICROBIAL INSECTICIDE ON THE PINK BOLLWORM, PECTINOPHORA GOSSYPIELLA (SAUNDERS).

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Last updated: 26 Dec 2024

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Abstract

ABSTRACT: The pink bollworm (PBW), Pectinophora gossypiella, is one of the most devastating and invasive insect pests causing immense damage on cotton plants across the world. Adverse effects of microbial insecticide vertimec (product of Streptomyces avermitilis - Avermectin-1.8% w/v) were evaluated against developmental stages of PBW under laboratory conditions. Mortality, LC50 and slope values were estimated for egg and larvae, as well as the latent effects of the vertimec LC50. Bioassay tests showed that the hatchability rate of the eggs decreased in dose dependent manner and it could be noted that the vertimec effect was equal to eggs of one and four days old , where the LC50(s) were 127 and 230 ppm, respectively. Other developmental stage, larvae, was also affected by vertimec. The mortality rates of PBW larvae treating as 1st instar increased with the increase of the used concentration and period after treatment, where the LC50-values calculated after 2 and 7 days of treatment were 0.5950 and 0.3455 ppm.    In addition, the biochemical response of  P. gossypiella was assessed at two larval stages (2nd & 4th instar) after treatment as newly hatched larvae with vertimec at LC50. The main metabolite levels of the two larval ages (total proteins, total carbohydrates, total lipids and glucose) and some vital enzyme activities (amylase, protease, ALT, AST and AchE) were estimated.

DOI

10.21608/mjapam.2015.321149

Keywords

Pectinophora gossypiella, pink bollworm, Streptomyces avermitilis, vertimec, Biochemical response, toxicity

Authors

First Name

Dina A.

Last Name

Ahmed

MiddleName

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Affiliation

Bollworms Dept., Plant Protection Research Institute, ARC, Dokki, Giza, Egypt.

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Volume

40

Article Issue

1

Related Issue

43915

Issue Date

2015-02-01

Receive Date

2014-09-16

Publish Date

2015-02-01

Page Start

169

Page End

178

Print ISSN

2357-0776

Online ISSN

2735-3494

Article File

MJAPAM_Volume 40_Issue 1_Pages 169-178.pdf

PDF . 903.0kB

Link

https://mjpam.journals.ekb.eg/article_321149.html

Detail API

https://mjpam.journals.ekb.eg/service?article_code=321149

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Original Article

Type Code

1,417

Publication Type

Journal

Publication Title

Menoufia Journal of Plant Protection

Publication Link

https://mjpam.journals.ekb.eg/

MainTitle

EFFECT OF VERTIMEC®, A MICROBIAL INSECTICIDE ON THE PINK BOLLWORM, PECTINOPHORA GOSSYPIELLA (SAUNDERS).

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Article

Created At

26 Dec 2024