Accumulation des carbohydrates chez les sexués de plusieurs espèces de fourmis en relation avec l'existence ou l'absence d'un vol nuptial

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Type
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Publications
Institution
Title
Accumulation des carbohydrates chez les sexués de plusieurs espèces de fourmis en relation avec l'existence ou l'absence d'un vol nuptial
Journal
Actes des Colloques Insectes Sociaux
Author(s)
Passera L., Keller L., Grimal A.
ISSN
0257-0076
ISSN-L
2-905272-02-5
Publication state
Published
Issued date
1989
Peer-reviewed
Oui
Volume
5
Pages
55-62
Language
french
Abstract
The dispersal strategy of ants generally makes use of a nuptial flight to bring together the sexes. The energy necessary to accomplish this flight comes from stored carbohydrates. However, in some species, one of the sexes does not fly and mating occurs in the nest. This is the case in Iridomyrmex humilis and Cataglyphis cursor, in which the virgin queens possess wings but not leave the natal nest. We show in this work that the winged females of these two species accumulate very little carbohydrate during the maturation period occuring between emergence and mating: expressed as a percentage of dry weight at the time of mating, the total carbohydrates reach only 3.2% in I. humilis and 2.1% in C. cursor. In contrast, the males of these species which fly, possess three to four times more carbohydrates (13.0% and 6.2%, respectively). These latter values are very similar to those found for both sexes of species employing nuptial flights, such several species of wood ants (Formica rufa, F. polyctena, F. lugubris ), Lasius (L. niger , L. flavus ) or Myrmica scabrinodis also studied here. It appears that the absence of the mating flight is associated with reduced levels of carbohydrates, specially glycogen
Keywords
Carbohydrates, glycogen, free sugars, energy content, period of maturation, sexuals, nuptialflight
Create date
24/01/2008 18:39
Last modification date
20/08/2019 13:31
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