Biology, morphology, and varietal distribution of Saw-toothed grain beetle, Oryzaephilus surinamensis (L) on date palm dry and semi-dry dates at district: Khairpur, Sindh - Pakistan

Tasneem Kousar

doi:10.19045/bspab.2021.100057

Abstract

Biology, morphology, and varietal distribution of Saw-toothed grain beetle, Oryzaephilus surinamensis (L) on date palm dry and semi-dry dates at district: Khairpur, Sindh - Pakistan

Highlights

Introduction the biology ofO. surinamensis has beenThe sawtoothed grain beetle, Oryzaephilus studied by many researchers [3] on various surinamensis Linnaeus (Coleoptera: hosts, detailed studies on the biology of O.Silvanidae), is one of the keys stored grain surinamensis on semi-dry and dry dates is pests that occur globally [1, 2]
Mortality and survival of different stages of the pest formulated by using the following formula: The rate of mortality= No of dead insects/Total no. of insects x 100 Survival percentage= No of survival insects/Total no. of insects x 100 Again for the population fluctuation on dry and semi-dry date fruits were collected from godowns at Khairpur Khajoor mandi and brought under laboratory conditions at a fortnightly interval basis and the sawtoothed population was counted by the help of magnifying glasses
The maximum eggs were laid on Dadhi variety as compared to Aseel variety in both dried and semi-dried conditions

Summary

Introduction

Introduction the biology ofO. surinamensis has beenThe sawtoothed grain beetle, Oryzaephilus studied by many researchers [3] on various surinamensis Linnaeus (Coleoptera: hosts, detailed studies on the biology of O.Silvanidae), is one of the keys stored grain surinamensis on semi-dry and dry dates is pests that occur globally [1, 2]. It is necessary to update all feeding habits in response to introducing sustainable and suitable control measures to reduce infestation attacks [12] These pests cause disease problems and retard the growth of date palm trees [13]. The present research study shows the biological, morphological investigation of the saw-toothed grain beetle on Aseel and Dadhi varieties of stored dried and semi dries dates commodities. Statistical analysis The analysis of variance was made through the randomized complete block design of all biological parameters and means were separated through (LSD) test at 5% probability to measure up the different treatments through the help of student package statistics software 8.1 versions, USA

Results

Discussion

Conclusion