Distribution and Prevalence of Wolbachia Infections in Native Populations of the Fire Ant Solenopsis invicta (Hymenoptera: Formicidae)

D. Dewayne Shoemaker, Mike Ahrens, Lauren Sheill, Mark Mescher, Laurent Keller, Kenneth G. Ross

Research output: Contribution to journalReview article

29 Citations (Scopus)

Abstract

Wolbachia are endosymbiotic bacteria that commonly infect arthropods. These bacteria induce a number of phenotypes in their hosts, including cytoplasmic incompatibility, thelytokous parthenogenesis, feminization, and male killing. We surveyed native South American populations of the fire ant Solenopsis invicta Buren for Wolbachia infections by using a diagnostic polymerase chain reaction assay. In addition, we determined the fidelity of vertical transmission of the bacteria from mother to offspring in this species by assaying daughters in 24 simple-family (monogyne) colonies. Infections were common in many parts of the extensive native range of S. invicta. However, the proportion of individuals infected varied greatly among samples, ranging from zero in several populations from the northerly parts of the range to >90% in more southerly populations. Possible explanations for this variation in the prevalence of Wolbachia infections are discussed. A survey of the two social forms of S. invicta from four geographic areas showed that the prevalence of Wolbachia infections consistently was higher in the monogyne form (single queen per colony) than the sympatric polygyne form (multiple queens per colony). One likely explanation for this trend is that the selective regimes acting on Wolbachia in the two forms differ because of the dissimilar reproductive strategies used by each form. Finally, overall transmission efficiency was found to be very high (>99%), making it unlikely that imperfect transmission prevents the spread of the microbe to near fixation in native populations.

Original languageEnglish (US)
Pages (from-to)1329-1336
Number of pages8
JournalEnvironmental Entomology
Volume32
Issue number6
DOIs
StatePublished - Dec 2003

Fingerprint

fire ants
Solenopsis invicta
Wolbachia
ant
Formicidae
Hymenoptera
infection
bacterium
queen insects
male-killing
cytoplasmic incompatibility
bacteria
feminization
vertical transmission
parthenogenesis
reproductive strategy
arthropod
polymerase chain reaction
fixation
phenotype

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Insect Science

Cite this

Shoemaker, D. Dewayne ; Ahrens, Mike ; Sheill, Lauren ; Mescher, Mark ; Keller, Laurent ; Ross, Kenneth G. / Distribution and Prevalence of Wolbachia Infections in Native Populations of the Fire Ant Solenopsis invicta (Hymenoptera : Formicidae). In: Environmental Entomology. 2003 ; Vol. 32, No. 6. pp. 1329-1336.
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Distribution and Prevalence of Wolbachia Infections in Native Populations of the Fire Ant Solenopsis invicta (Hymenoptera : Formicidae). / Shoemaker, D. Dewayne; Ahrens, Mike; Sheill, Lauren; Mescher, Mark; Keller, Laurent; Ross, Kenneth G.

In: Environmental Entomology, Vol. 32, No. 6, 12.2003, p. 1329-1336.

Research output: Contribution to journalReview article

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T1 - Distribution and Prevalence of Wolbachia Infections in Native Populations of the Fire Ant Solenopsis invicta (Hymenoptera

T2 - Formicidae)

AU - Shoemaker, D. Dewayne

AU - Ahrens, Mike

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