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  • 1
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    Global invasion history of the fire ant Solenopsis invicta (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-02-26
    Description: The fire ant Solenopsis invicta is a significant pest that was inadvertently introduced into the southern United States almost a century ago and more recently into California and other regions of the world. An assessment of genetic variation at a diverse set of molecular markers in 2144 fire ant colonies from 75 geographic sites worldwide revealed that at least nine separate introductions of S. invicta have occurred into newly invaded areas and that the main southern U.S. population is probably the source of all but one of these introductions. The sole exception involves a putative serial invasion from the southern United States to California to Taiwan. These results illustrate in stark fashion a severe negative consequence of an increasingly massive and interconnected global trade and travel system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ascunce, Marina S -- Yang, Chin-Cheng -- Oakey, Jane -- Calcaterra, Luis -- Wu, Wen-Jer -- Shih, Cheng-Jen -- Goudet, Jerome -- Ross, Kenneth G -- Shoemaker, DeWayne -- New York, N.Y. -- Science. 2011 Feb 25;331(6020):1066-8. doi: 10.1126/science.1198734.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉USDA-ARS Center for Medical, Agricultural, and Veterinary Entomology, 1600/1700 Southwest 23rd Drive, Gainesville, FL, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21350177" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Ants/genetics ; Asia ; Australia ; Bayes Theorem ; Commerce ; Computer Simulation ; DNA, Mitochondrial/genetics ; Female ; Genes, Insect ; Genetic Variation ; Genotype ; Haplotypes ; *Introduced Species ; Male ; Microsatellite Repeats ; Molecular Sequence Data ; Population Dynamics ; Sequence Analysis, DNA ; South America ; Travel ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Identification of a major gene regulating complex social behavior (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-17
    Description: Colony queen number, a major feature of social organization in fire ants, is associated with worker genotypes at the gene Gp-9. We sequenced Gp-9 and found that it encodes a pheromone-binding protein, a crucial molecular component in chemical recognition of conspecifics. This suggests that differences in worker Gp-9 genotypes between social forms may cause differences in workers' abilities to recognize queens and regulate their numbers. Analyses of sequence evolution indicate that regulation of social organization by Gp-9 is conserved in South American fire ant species exhibiting social polymorphism and suggest that positive selection has driven the divergence between the alleles associated with alternate social organizations. This study demonstrates that single genes of major effect can underlie the expression of complex behaviors important in social evolution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krieger, Michael J B -- Ross, Kenneth G -- New York, N.Y. -- Science. 2002 Jan 11;295(5553):328-32. Epub 2001 Nov 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Entomology, University of Georgia, Athens, GA 30602-2603, USA. mkrieger@arches.uga.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11711637" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Ants/chemistry/*genetics/physiology ; Argentina ; Base Sequence ; *Behavior, Animal ; Biological Evolution ; Brazil ; Carrier Proteins/chemistry/*genetics/physiology ; Evolution, Molecular ; Female ; *Genes, Insect ; Genotype ; Insect Proteins/chemistry/*genetics/physiology ; Molecular Sequence Data ; Phylogeny ; RNA, Messenger/chemistry/genetics ; *Social Behavior ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Response (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-02-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keller, L -- Ross, K G -- New York, N.Y. -- Science. 1994 Feb 25;263(5150):1157-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17831628" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Phenotypic basis of reproductive success in a social insect: genetic and social determinants (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-05-21
    Description: Social insects live in societies that include both reproductive and nonreproductive adults. Understanding the factors that determine which individuals become successful reproductives is necessary to explain the evolution of these societies. The phenotypic effects of the gene Pgm-3 (or a closely linked gene) that may cause workers of the fire ant Solenopsis invicta to selectively execute all queens of a specific genotype were investigated. These effects, which involve differences in queen reproductive development, are expressed only in colonies exhibiting a particular type of social organization (multiple-queen colonies), and it is only in such colonies that selective execution on the basis of genotype occurs. This is an unusual example of genotype-environment interaction in gene expression in which the environmental component is the social environment. The queens executed are, surprisingly, those with the greatest reproductive development. Thus, there is a counterintuitive relation between the potential and realized reproductive success of queens in multiple-queen societies of this ant.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keller, L -- Ross, K G -- New York, N.Y. -- Science. 1993 May 21;260(5111):1107-10.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17806340" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Ant invaders (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-09-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ross, K G -- New York, N.Y. -- Science. 1994 Sep 16;265(5179):1744-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17770900" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
    Electronic Resource
    Electronic Resource
    Relationship of queen number and worker size in polygyne colonies of the fire antSolenopsis invicta (1996)
    Springer
    Insectes sociaux 43 (1996), S. 303-307 
    Details
    ISSN: 1420-9098
    Keywords: Monogyny ; polygyny ; caste ; fire ants ; Solenopsis invicta
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We examined the relationship between queen number and worker size in colonies of the fire antSolenopsis invicta. Worker size in monogyne colonies was significantly greater than in polygyne colonies; furthermore, polygyne colonies snowed a strong negative linear relationship between queen number and worker size. Higher queen pheromone level and/or decreased food availability accompanying an increase in queen number likely play important roles in producing the observed patterns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01242931
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  • 7
    Electronic Resource
    Electronic Resource
    Ecology and Evolution of Social Organization: Insights from Fire Ants and Other Highly Eusocial Insects (1995)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Ecology, Evolution, and Systematics 26 (1995), S. 631-656 
    Details
    ISSN: 0066-4162
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.es.26.110195.003215
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  • 8
    Electronic Resource
    Electronic Resource
    Regulation of Reproduction in Eusocial Hymenoptera (1985)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 30 (1985), S. 319-343 
    Details
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.en.30.010185.001535
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  • 9
    Electronic Resource
    Electronic Resource
    Differential reproduction in multiple-queen colonies of the fire ant Solenopsis invicta (Hymenoptera: Formicidae) (1988)
    Springer
    Behavioral ecology and sociobiology 23 (1988), S. 341-355 
    Details
    ISSN: 1432-0762
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The contribution to maternity of workers and female sexuals over time by queens in six multiple-queen laboratory colonies of Solenopsis invicta was directly assessed by use of enzyme genetic markers. Queens contributed more equally to the worker pool than to the pool of sexuals in virtually all samples (Fig. 1), and individuals producing a substantial proportion of the workers often had low or no representation of their daughters in the pool of sexuals. Signficant disparity among queens in their relative production of sexual daughters was often evident, with dominance in production of sexuals by a given queen commonly occurring in association with a pronounced loss of weight followed shortly by her death. The results suggest that significant variability in short-as well as long-term reproductive success may occur among the distantly related queens associating in natural polygyne S. invicta nests. Variance in apportionment of maternity of sexuals did not appear to be simply related to varying levels of fecundity, suggesting that the common presumption that reproductive success can be equated with fecundity in polygyne social Hymenoptera may not be well founded. The observed variance also did not appear to result from a simple mechanism of kin recognition and discrimination by workers in the process of brood rearing. Rather, this variance may have largely resulted from either, 1) recognition of certain queens and their progeny coupled with preferential sexualization of these immatures by nurse workers, or, 2) queen biasing of eggs toward development as sexuals. The frequent association of weight loss and death of mother queens with high levels of sexual daughter production may be best explained by the latter mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303708
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  • 10
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    Genetic control of social organization in an ant (1998)
    National Academy of Sciences
    Details
    Publication Date: 1998-11-24
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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