INFLUENCE OF DIFFERENT COLOURS OF LIGHTS ON DEVELOPMENTAL STAGES OF RED FLOUR BEETLE (TRIBOLIUM CASTANEUM) AND ADULTS PHOTOTAXIS BEHAVIOR

Authors

  • N. Ahmed Department of Entomology,Lasbela University of Agriculture, Water and Marine Sciences, Uthal, Balochistan, Pakistan
  • A. Ali Department of Entomology, Lasbela University of Agriculture, Water and Marine Sciences, Uthal, Balochistan, Pakistan
  • S. A. Memon Department of Entomology, Lasbela University of Agriculture, Water and Marine Sciences, Uthal, Balochistan, Pakistan
  • T. K. Qambrani Department of Plant Pathology,Lasbela University of Agriculture, Water and Marine Sciences, Uthal, Balochistan, Pakistan
  • G. Khaliq Department of Horticulture, Lasbela University of Agriculture, Water and Marine Sciences, Uthal, Balochistan, Pakistan

DOI:

https://doi.org/10.47432/2021.37.1.6

Keywords:

developmental period, hatching percentage, light attraction, mortality, Tribolium castaneum

Abstract

Red flour beetle (Tribolium castaneum) is the major insect pest of store grain, and its single larvae can attack 88 grains during its life which leads to a considerable loss of quality and viability of grain. Therefore, to manage this insect pest present research was designed to check the effects of different colours of lights on the developmental stages of red flour beetle and their attraction on lights. Six (White, Yellow, Red, Green, Blue and Black) colours of light were used in the present experiment at 30±2oC and 60%±10% relative humidity (RH). Results revealed that a longer incubation period (4.17±0.18, less hatching (78.66±0.50%) and highest mortality (21.34±1.11%) of T. castaneum eggs were observed on blue light, while a short incubation period (3.03±0.51), highest hatching (89.99±1.92%) and lowest mortality (10.01±0.22%) were observed on white colour of light. However, a longer duration (32.01±0.15, 12.33±0.31) and maximum (28.10±2.50 ,14.66±0.52) mortality of T. castaneum was found in larval and pupae stages on blue colour of light, while a short duration (21.27±0.27, 7.33±0.13) and minimum (8.30±2.5, 8.00±0.65) larval and pupal  mortality (%) were seen by red and yellow colour of lights. Similarly, an adult’s longevity significantly reduced (48.33±1.76) when beetles were exposed on blue light, whereas a significant (62.33±1.66) increase in adult longevity was found on white colour of light. A highest (33.33±0.56) attraction of red flour beetle was found on red colour of light, whereas, a lowest attraction was observed on blue (6.00±0.85) and black (10.00±1.55) colours of lights.

Downloads

Published

2021-06-28