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Archive: Published Articles


Interdisciplinary International Science Journal

Volume 41 (2023)
Issue 3
Page No. 1333



Swapna S*, Aiswarya A.S., Susmi M., Ajith M.,

Gayathri Mohan

Department of Zoology, Sree Narayana College, Chempazhanthy, Thiruvananthapuram, Kerala, India


Environment and Ecology 41(3): 1333—1336, July—September 2023
Article DOI:
ISSN 0970-0420

Survey on the Occurrence of Insect Pests in Stored 
Grains in Thiruvananthapuram District, Kerala State

Swapna S., Aiswarya A.S., Susmi M., Ajith M., Gayathri Mohan


Received 26 January 2023, Accepted 26 April 2023, Published on 24 July 2023


To identify the species composition and relative abundance of insect pest in stored grains, a preliminary investigation was conducted by collecting grain samples from 16 grain merchant stores in Thiruvananthapuram District, Kerala state. Insect pest collected during the study were pulse beetle, Callosobruchus chinensis, cow pea beetle, C. maculatus, grain weevil, Sitophilus granarius, long headed flour beetle, Latheticus oryzae, rice weevil, Sitophilus oryzae, red flour beetle, Tribolium castaneum, lesser grain borer, Rhyzopertha dominica, saw toothed grain beetle, Oryzaephilus surinamensis, Angoumois grain moth, Sitotroga cerealella. Tribolium castanaeum, Sitophilus oryzae, Rhizopertha dominica (32.25%, 24.51%, 21.91% respectively  per 200 g  sample) were the most abundant pest species in the grain samples.

Keywords   Insect pests, Pulses, Cereals, Stored grains.  

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