Screening of Carrier Baits and Attractants with Beauveria bassiana in the Control of Red Imported Fire Ants

doi:10.16409/j.cnki.2095-039x.2024.03.013

Abstract

Abstract: The red imported fire ant, Solenopsis invicta Buren, is one of the most harmful invasive species worldwide, posing a serious threat to ecosystems and human health. Beauveria bassiana, an effective biological control agent, plays dual roles in inhibiting population damage and maintaining ecological security in sustainable control of red fire ants. To screen for the ideal carrier bait and attractant for the use of B. bassiana in controlling red imported fire ants, this study tested the attractiveness of five plant-based baits (popcorn, wheat, white glutinous corn, corn grits, and soybeans) and eight attractants (peanut oil, corn oil, soybean oil, olive oil, honey, shrimp powder, fish powder, and ham sausage). The results showed that wheat, among the plant-based baits, and peanut oil, among the attractants, had the most significant attraction and elicited the strongest foraging activities in red fire ants, indicating that they can be used as the base materials for preparing B. bassiana bait. By further optimizing the formula, a bait mixture of wheat, peanut oil, and B. bassiana spore powder in a ratio of 35: 1: 9 (w : w) was determined to be the best formula for controlling red imported fire ants, effectively overcoming the repellent effect of B. bassiana spore powder in the bait and significantly enhancing the attraction effect. These findings provide crucial data for the further development of B. bassiana bait as a microbial pesticide and have important implications for sustainable control of red imported fire ants.

Key words: Solenopsis invicta, entomopathogenic fungi, Beauveria bassiana, biological control, microbial pesticide

CLC Number:

S476.2

HUANG Zhen, LIU Si, NONG Xiangqun, GAO Qionghua. Screening of Carrier Baits and Attractants with Beauveria bassiana in the Control of Red Imported Fire Ants[J]. Chinese Journal of Biological Control, 2025, 41(3): 680-690.

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