GENETIC REGULATION OF COLONY SOCIAL ORGANIZATION IN FIRE ANTS: AN INTEGRATIVE OVERVIEW

2007 ◽  
Vol 82 (3) ◽  
pp. 201-226 ◽  
Author(s):  
Dietrich Gotzek ◽  
Kenneth G. Ross
Genetics ◽  
2003 ◽  
Vol 165 (4) ◽  
pp. 1853-1867
Author(s):  
Kenneth G Ross ◽  
Michael J B Krieger ◽  
D DeWayne Shoemaker

Abstract Little is known about the genetic foundations of colony social organization. One rare example in which a single major gene is implicated in the expression of alternative social organizations involves the presumed odorant-binding protein gene Gp-9 in fire ants. Specific amino acid substitutions in this gene invariably are associated with the expression of monogyny (single queen per colony) or polygyny (multiple queens per colony) in fire ant species of the Solenopsis richteri clade. These substitutions are hypothesized to alter the abilities of workers to recognize queens and thereby regulate their numbers in a colony. We examined whether these same substitutions underlie the monogyny/polygyny social polymorphism in the distantly related fire ant S. geminata. We found that Gp-9 coding region sequences are identical in the polygyne and monogyne forms of this species, disproving our hypothesis that one or a few specific amino acid replacements in the protein are necessary to induce transitions in social organization in fire ants. On the other hand, polygyne S. geminata differs genetically from the monogyne form in ways not mirrored in the two forms of S. invicta, a well-studied member of the S. richteri clade, supporting the conclusion that polygyny did not evolve via analogous routes in the two lineages. Specifically, polygyne S. geminata has lower genetic diversity and different gene frequencies than the monogyne form, suggesting that the polygyne form originated via a founder event from a local monogyne population. These comparative data suggest an alternative route to polygyny in S. geminata in which loss of allelic variation at genes encoding recognition cues has led to a breakdown in discrimination abilities and the consequent acceptance of multiple queens in colonies.


Insects ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 758
Author(s):  
Jian Chen ◽  
David H. Oi

The invasive red imported fire ant, Solenopsis invicta Buren (hereafter, fire ants), is a significant threat to public health and a danger to livestock, pets and wildlife due to their venomous stings. The fire ant has invaded many countries and regions and has become a globally significant pest. The current major tool to manage fire ants are synthetic insecticides that are used largely as stomach poisons in bait products or contact insecticides in spray, broadcast, drench, and dust products for area and nest treatments. In addition to these insecticide products, repellants and fumigants can also be useful in some unique scenarios. The ever-increasing public concern about the potential adverse effects of synthetic insecticides on health and the environment has been a driving force for searching for safer alternatives to control fire ants. Tremendous effort has been made in developing biologically-based control for managing fire ants; however, natural products continue to be one of the most attractive sources of safe alternatives to synthetic insecticides. Here, we summarized the synthetic insecticides that are currently used in managing fire ants, available alternative products in the current market, and academic efforts in searching for fire ant natural toxins, repellants and fumigants.


Nature ◽  
2013 ◽  
Vol 493 (7434) ◽  
pp. 664-668 ◽  
Author(s):  
John Wang ◽  
Yannick Wurm ◽  
Mingkwan Nipitwattanaphon ◽  
Oksana Riba-Grognuz ◽  
Yu-Ching Huang ◽  
...  
Keyword(s):  

10.2307/5893 ◽  
1995 ◽  
Vol 64 (3) ◽  
pp. 315 ◽  
Author(s):  
Eldridge S. Adams ◽  
Walter R. Tschinkel

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