Integration of some biopesticides against potato tuber moth, Phthorimaea operculella (Zell.), during storage with reference to histopathological changes detected by a transmission electron microscope in the endocrine system

Mohamed Ahmed Gesraha,Aziza Mohamed Fouad Sharaby,Sahar Ahmed Baker Fallatah

doi:10.1186/s42269-019-0163-1

Mohamed Ahmed Gesraha, Aziza Mohamed Fouad Sharaby + Show 1 more

Open Access

https://doi.org/10.1186/s42269-019-0163-1

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Abstract

Highlights

The potato tuber moth (PTM), Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae), is an important pest
In the data recorded, it is clear that there are insignificant differences at P < 0.01 of the mean number of deposited eggs that were laid on potato tubers treated by talcum powder mixed with the three additives (3.0 eggs/♀) and on tuber treated by powder containing basil extract only (4.6 eggs/♀) and nearly equal difference in the B.t + extract or GV + extract; no differences in treatments by B.t or GV when used separately were found compared with the two control treatments of talcum powder only or the untreated tubers (38.2 eggs/♀)
Histopathological changes on the endocrine glands of the larvae that were detected by the electron microscope have been recorded

Summary

Introduction

The potato tuber moth (PTM), Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae), is an important pest. It is the most important insect pest in potato field and storage under subtropical warms and dry summer conditions. The larvae attack both foliage and tubers in the field and infested tubers brought into heaps. Numerous studies indicated that many wild medicinal and ornamental plants have pesticidal properties which show antifeedant, repellent, growth regulator effects, and toxic activities on a wide range of insect pests (Stevenson 2014 and Onu et al 2015). Endocrine-disrupting compounds (EDC) are known as third-generation insecticides They act as insect growth regulators (IGR) and are considered as potential endocrine disruptors. Insect endocrinology is currently an active area of research because it offers the potential for disrupting the life cycle of the insect pest without harms to the environment

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