Generation- wise Comparative Biology of Pulse Beetle, Callosobruchus maculatus on different Stored Pulses

Author: Karthik R., Deka, M.K., Sravani Dumala and Prince Jayasimha Pamala

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Abstract

Pulse beetle, Callosobruchus maculatus is a major storage pest of various pulses. The studies on biology of C. maculatus on different pulses with emphasis on different generation provide more information for better management practices. So, in this study, generation-wise comparative biology of C. maculatus in different pulses such as cowpea, green gram, black gram, chickpea, soybean and pea were evaluated. The results revealed that, in a year, C. maculatus completed eight generations in cowpea, green gram and pea, seven generations on black gram and six generations in chickpea and soybean. The pre oviposition period, post oviposition period and incubation period of C. maculatus on six different pulses showed no significant difference which was in the range of 6.3 to 6.7 hours, 1.9 to 2.1 days and 3.1 to 3.3 days, respectively. The longest oviposition period, adult longevity of male and female was recorded ongreen gram which was 6.6 days, 8.8 days and 9.3 days, respectively while the shortest oviposition period, adult longevity of male and female was recorded on chickpea which was 5.0 days, 7.2 days and 7.6 days, respectively. The longest developmental period was recorded on chickpea (37.2 days) while the shortest developmental period was recorded on green gram (26.2 days). In addition to biological parameters, the ovipositional preference of pulse beetle was also studied. In the choice test, the maximum ovipositional preference of C. maculatus was recorded on green gram (19.25 % eggs) while the minimum ovipositional preference was recorded on chickpea (7.00 % eggs). In the no choice test also, the maximum ovipositional preference was recorded on green gram (87.00 % eggs) while minimum ovipositional preference was recorded on chickpea (74.00 % eggs).

Keywords

Pulses, pulse Beetle, Callosobruchus maculatus, biology, oviposition, preference

Conclusion

Our study reveals the generation wise biology of C. maculatus in different pulses which is an incipient to better understand the biology of pulse beetle. The life cycle of pulse beetle was quicker in green gram when compared to other pulses. Similarly, the green gram was also found to be the most preferred pulses by C. maculatus. As chickpea was found to be the least preferred pulses, it can be concluded that chickpea is resistant to oviposition by C. maculatus while green gram is more susceptible to its oviposition.

References

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How to cite this article

Karthik R., Deka, M.K., Sravani Dumala and Prince Jayasimha Pamala (2023). Generation- wise Comparative Biology of Pulse Beetle, Callosobruchus maculatus on different Stored Pulses. Biological Forum – An International Journal, 15(6): 442-449.