Full TGIF Record # 103829
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Web URL(s):http://www.bioone.org/bioone/?request=get-document&issn=0046-225X&volume=034&issue=02&page=0308
    Last checked: 11/2005
    Access conditions: Docuemnt is within a limited access website
Publication Type:
Author(s):Folgarait, Patricia J.; Chirino, Monica G.; Patrock, Richard J. Wilson; Gilbert, Lawrence E.
Author Affiliation:Centro de Estudios e Investigaciones, Universidad Nacional de Quilmes, Buenos Aires, Argentina; Patrock and Gilbert: Section of Integrative Biology and Brackenridge Field Laboratory, University of Texas, Austin, Texas
Title:Development of Pseudacteon obtusus (Diptera: Phoridae) on Solenopsis invicta and Solenopsis richteri fire ants (Hymenoptera: Formicidae)
Section:Population ecology
Other records with the "Population ecology" Section
Source:Environmental Entomology. Vol. 34, No. 2, April 2005, p. 308-316.
# of Pages:9
Publishing Information:College Park, MD: Entomological Society of America
Keywords:TIC Keywords: Solenopsis invicta; Solenopsis richteri; Ant control; Biological control; Biological control organisms
Abstract/Contents:"We studied the developmental performance of the large biotype of Pseudacteon obtusus Borgmeier, a promising biological control agent of imported fire ants. We measured selected life history traits of this parasitoid as a function of (1) host species (Solenopsis invicta Buren versus Solenopsis richteri Forel), (2) temperature (22 verses 28°C), and (3) size distributions of available host ants (big versus mixed-size classes of workers). Survivorship on S. invicta was much greater than that on S. richteri under most conditions. Developmental time was strongly influenced by temperature with total developmental periods shortened by 21-34% at the 6°C higher temperature treatment. However, developmental periods were weakly influenced by hosts across temperatures. We found that larval, pupal, and total developmental periods of this phorid fly were up to 6.2% longer on S. richteri than on S. invicta, although these periods depended on temperature. Total developmental time was slightly shorter (by 4.8%) on S. invicta than S. richteri at 22°C but longer (by 5.7%) on S. invicta at 28°C. The relationship between host size and sex of emerging flies contrasts with that of previously documented Pseudacteon species, in that males were produced from all host size classes while females only came from larger ants. Sex ratios favor females when a mixture of ant size classes were offered in comparison to when only big ants could be chosen. Pseudacteon obtusus seems to be a promising candidate for biological control releases in that in addition to its high host specificity, it develops better on red fire ants, attacks ants on trails and mounds, and chooses a worker size range that complements the two other Pseudacteon species already released."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Folgarait, P. J., M. G. Chirino, R. J. W. Patrock, and L. E. Gilbert. 2005. Development of Pseudacteon obtusus (Diptera: Phoridae) on Solenopsis invicta and Solenopsis richteri fire ants (Hymenoptera: Formicidae). Environ. Entomol. 34(2):p. 308-316.
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    Last checked: 11/2005
    Access conditions: Docuemnt is within a limited access website
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MSU catalog number: SB 599 .E44
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