Author:
Aryan Shalini,Gupta R. K.,Basu Umer,Bandral R. S.,Singh S. K.,Pandey Dheerendra,Ahanger Shafat Ahamad
Abstract
In this study, the effects of glyphosate on the biology and fitness of the biocontrol agent Zygogramma bicolorata against parthenium weed. Bioassay of glyphosate was conducted using a minimum range of the field-recommended dose (0.408%). Results showed that indirect exposure to glyphosate caused significant mortality of I, II, III, and IV instar Z. bicolorata grubs. The highest mortality (23.60%) was recorded in the first instar. Furthermore, the total larval developmental period was significantly prolonged in the group exposed to glyphosate (19.50 days) compared to the unexposed group (17.73 days). The application of glyphosate also caused a variation in pupation period. In addition, the longevity of both male and female Z. bicolorata was negatively impacted by glyphosate treatment. Overall, these findings suggest that glyphosate has an ecotoxic effect on Z. bicolorata and may have significant implications for its use as a biocontrol agent for parthenium. It is important to carefully consider the potential risks associated with the use of herbicides and ensure that they are used in a safe and responsible manner to minimize any negative impacts on non-target organisms.
Publisher
The Entomological Society of India
Subject
Insect Science,Agronomy and Crop Science,Ecology,Ecology, Evolution, Behavior and Systematics
Reference18 articles.
1. Benamu M A, Schneider M I, Sanchez N E. 2010. Effects of the herbicide glyphosate on biological attributes of Alpaida veniliae (Araneae, Araneidae), in laboratory, Chemosphere 78(7): 871-876.
2. Ding J Q, Wang R, Fu W D, Chen Z Q. 1998. Effects of Roundup on the mortality of eggs, larvae and adults of Neochetina eichhorniae. Chinese Journal of Biological Control 14: 152-155.
3. Halangoda H R, Pakeerathan K, Mikunthan G. 2022. Impacts of selected pesticides on parthenium beetle, Zygogramma bicolorata pallister under laboratory conditions in Sri Lanka. 4th International Conference of Agricultural Sciences, Sabaragamuwa University of Sri Lanka 1(1): 5-8.
4. Hasan F, Ansari M S. 2017. Lethal and sublethal effects of insecticides on the biological attributes of Zygogramma bicolorata Pallister (Coleoptera: Chrysomelidae): a biocontrol agent of Parthenium hysterophorus L., Neotropical Entomology 46: 473-486.
5. Jayanth K P. 1987. Introduction and establishment of Zygogramma bicolorata on Parthenium hysterophorus at Bangalore, India Current Science 56: 310-311.