Prevalence and abundance of insect pests in stored pulses collected from two local markets of Dhaka city

Md Reaz Mahmud,Mehjabin Rahman,Shanjida Sultana,Shefali Begum,Tangin Akter

doi:10.3329/jujbs.v8i1.42470

Md Reaz Mahmud, Mehjabin Rahman + Show 3 more

Open Access

https://doi.org/10.3329/jujbs.v8i1.42470

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Abstract

Prevalence and abundance of stored grain insect pests in four varieties of pulses i.e. Lens culinaris, Pisum staivum, Cicer arietinum collected from two markets of Dhaka city were recorded. Nine species of insect pests, viz. Sitophilus oryzae, Tribolium castaneum, Callosobruchus chinensis, C. maculatus, Rhizopertha dominica, Oryzaephilus surinamensis, Liposcelis entomophila, Sitotroga cerealella, and Formica sp., were recorded throughout the study. The percentage of weight-loss was higher (7.54) in those pulses which were highly infested by pests. Highest pest population was observed during May to June (753). However, Sitotroga cerealella were found only in November to December of the study period. The maximum species richness (7) was observed in Green gram and Chickpeas samples, but the minimum species evenness was observed in Green gram (0.6969) and maximum in Red lentil (0.9886). Jahangirnagar University J. Biol. Sci. 8(1): 75-82, 2019 (June)

Highlights

Insects are known to be the most successful and diverse animals on earth and are closely associated with our lives and affect the welfare of humanity in diverse ways (Chakravarthy, 2015)
Insect infestation occurs in stored grains and grain products to variable extent depending upon the storage conditions in developing countries (Bhargava & Kumawat, 2010)
Weight loss percentage: The weight loss percentage fluctuated with the number of insects

Summary

Introduction

Insects are known to be the most successful and diverse animals on earth and are closely associated with our lives and affect the welfare of humanity in diverse ways (Chakravarthy, 2015). Insect infestation occurs in stored grains and grain products to variable extent depending upon the storage conditions in developing countries (Bhargava & Kumawat, 2010). They transfer bacteria and microscopic fungi of pathogenic importance. Cereals and pulses have great biological and nutritional value in developing countries (Arthur & Throne, 2003; Babu et al, 2003). Pulses are generally subject to long-term storage (Tiwari et al, 2011) and the storage conditions, such as time, temperature and moisture content induce physicochemical and biological changes leading to significant effect on the nutritional composition, germination and longevity (Hentges et al, 1991; Menkov, 2000)

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