The evaluation of worker activity of Solenopsis invicta in the soybean field
The worker activity of Solenopsis invicta on the habitat of soybean field in Haikou City was observed and recorded by Ruler-mark method,as well as the path analysis between ant mound size,their activity time,and number of worker ants,climbing height,and recovery time were analyzed.The investigation results of 41 ant mounds indicated that,with the exception of one mound,the average climbing height at 60 s was higher than that of at 15 s after the disturbance.Moreover,the number of worker ants and their climbing height increased with the prolongation of time,attained the maximum at 45 s,and then gradually decreased into recovery.Correlation analysis showed that the climbing height of workers on the sunny side within 180 s was closely related to investigation time,as well as the recovery time was closely related to the mound size,the correlation coefficient is 0.4572 and 0.6233,respectively.The path analysis showed that the investigation time had a positive effect on the average climbing height of ant worker on the shady side at 15 s,the average climbing height of ant worker at 15 s,and total climbing height on the sunny side of ruler within 180 s.Moreover,the mound height,mound surface and its volume had a positive effect on the recovery time.This study offers a scientific reference for comprehending the behavioral traits of S.invicta in soybean planting habitats located in tropical areas.As well as it can aid in the successful implementation of prevention and control measures.
Solenopsis invictaant workersactivityhabitat of soybean fieldpath analysis