Oviposition Process of Solenopsis invicta (Hymenoptera: Formicidae) Queens

The oviposition process of the red imported fire ant, Solenopsis invicta Buren (Hymenoptera: Formicidae), is described as a succession of four events forming one egg-laying cycle. Each time an egg is laid, the vulva opens and the sting is fully extended. When the vulva closes, the egg is forced to t...

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Bibliographic Details
Published in:Annals of the Entomological Society of America 2007-09, Vol.100 (5), p.758-762
Main Authors: Vander Meer, R. K, Morel, L
Format: Article
Language:English
Subjects:
BEHAVIOR
Biological and medical sciences
egg deposition
fire ants
Formicidae
Fundamental and applied biological sciences. Psychology
Hymenoptera
Insecta
Invertebrates
monogyny
ova
oviposition
oviposition behavior
oviposition cycle
polygyny
queen insects
Solenopsis invicta
sting apparatus
Systematics. Geographical distribution
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Summary:The oviposition process of the red imported fire ant, Solenopsis invicta Buren (Hymenoptera: Formicidae), is described as a succession of four events forming one egg-laying cycle. Each time an egg is laid, the vulva opens and the sting is fully extended. When the vulva closes, the egg is forced to the base of the sting, whereupon the sting is usually retracted across the egg. This phenomenon has been consistently observed for queens from monogynous and polygynous S. invicta colonies. Zero to four eggs can be laid for each opening of the vulva. Multiple egg deposition is more frequent for monogyne queens, and it generally follows an oviposition cycle in which no egg is laid. The egg-laying cycles were evenly distributed during the observation periods, regardless of the total number of eggs laid, thereby suggesting that oviposition is a continuous process in S. invicta.
ISSN:0013-8746
1938-2901
0013-8746
DOI:10.1603/0013-8746(2007)100[758:OPOSIH]2.0.CO;2