Facultative Mutualism between Imported Fire Ants (Solenopsis invicta) and a Legume (Senna occidentalis)

2000 ◽  
Vol 45 (3) ◽  
pp. 289 ◽  
Author(s):  
Robert R. Fleet ◽  
Brenda L. Young
Keyword(s):  
Solenopsis Invicta ◽  
Fire Ants ◽  
Facultative Mutualism ◽  
Imported Fire Ants

scholarly journals Red Imported Fire Ants (Hymenoptera: Formicidae) Cover the Insecticide-Treated Surfaces with Particles to Reduce Contact Toxicity

2021 ◽  
Author(s):  
Chao Wen ◽  
Liming Sheng ◽  
Jian Chen ◽  
Jianlong Zhang ◽  
Ying Feng ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Surface Treatment ◽  
Solenopsis Invicta ◽  
Behavioral Responses ◽  
Fire Ants ◽  
Contact Toxicity ◽  
Covered Area ◽  
Imported Fire Ants ◽  
Red Imported Fire Ants

Abstract Surface treatment is commonly used in controlling the red imported fire ants, Solenopsis invicta Buren. In the present study, the behavioral responses of S. invicta workers to surfaces treated with insecticides were investigated. Toxicological tests showed that beta-cypermethrin had the highest contact toxicity (with the lowest LC50 value) among nine tested insecticides, followed by thiamethoxam, fipronil, indoxacarb, chlorfenapyr, rotenone, spinetoram, avermectin, and chlorantraniliprole. In the laboratory, surfaces treated beta-cypermethrin or rotenone significantly reduced the number of foraging ants. In addition, S. invicta workers transported significantly more particles (measured in weight and/or covered area) onto surfaces treated with fipronil (50, 500, and 5000 ppm), rotenone (5000 ppm), or avermectin (5000 ppm) compared with the controls. Similarly, these insecticides significantly triggered the particle-covering behavior of ants in the field. We hypothesized that such behaviors would reduce the contact toxicity of insecticides against S. invicta. When the surfaces treated with fipronil or rotenone (500 or 5000 ppm) were artificiality covered with particles, S. invicta had significantly higher LT50 values compared with insecticide-treated surfaces without particles. This study provides the first evidence that S. invicta workers can perform particle-covering behavior to reduce the toxicity of certain insecticides, which constitutes a unique insecticide-resistance strategy in ants.

Cuticular lipids of the imported fire ants, Solenopsis invicta and richteri

1975 ◽  
Vol 5 (6) ◽  
pp. 821-829 ◽  
Author(s):  
James B. Lok ◽  
Eddie W. Cupp ◽  
Gary J. Blomquist
Keyword(s):  
Solenopsis Invicta ◽  
Cuticular Lipids ◽  
Fire Ants ◽  
Imported Fire Ants

Near Fatal Fire Ant Envenomation of a Newborn

PEDIATRICS ◽  
1992 ◽  
Vol 90 (4) ◽  
pp. 622-624
Author(s):  
WILLUAM E. HARDWICK ◽  
JAMES A. ROYALL ◽  
BRUCE A. PETITT ◽  
SAMUEL J. TILDEN
Keyword(s):  
Solenopsis Invicta ◽  
Fire Ants ◽  
Fire Ant ◽  
Port City ◽  
Southern States ◽  
South Central ◽  
Solenopsis Richteri ◽  
Central United States ◽  
Imported Fire Ants ◽  
Venom Hypersensitivity

Imported fire ants, Solenopsis richteri and Solenopsis invicta, are menacing health hazards for the 20 to 30 million people who live in the fire ant-infested regions of the southeastern and south central United States. In the early 1900s, fire ants were brought into the port city of Mobile, Alabama, on vegetation and produce from South America. Their aggressive behavior compared to native ants and the favorable climate throughout the southeast allowed extensive spread. In 1985 it was estimated that fire ants infested approximately 250 million acres in eleven southern states and Puerto Rico.1 In infested areas fire ants account for 90% of all ant populations and stings from fire ants are more frequent than stings from other hymenoptera, becoming the most common cause of insect venom hypersensitivity.

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