Difference between revisions of "Labial Gland Disease"
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===Known Ant Hosts===
===Known Ant Hosts===
Revision as of 02:59, 14 October 2021
Labial gland disease causes swelling of the labial glands in the pupal stage in Formica species. The resulting adults have enlarged thoraces and are called secretergates (Wasmann's pseudogynes). They infect the younger larvae, probably during feeding. The agent of the disease is unknown. It soon becomes non-infectious outside the labial glands. Diseased females were not seen to feed larvae. Yet their offspring contained secretergates. The discrepancy remains unexplained. (Elton, 1991)
Known Ant Hosts
Secretoforms have been found in six of the eight European species of the Formica rufa group, and may also occur in Formica uralensis and Formica nigricans. They do occur in other species of the genus viz. in Formica sanguinea (Wasmann, 1915), Formica fusca (Wasmann, 1915), Formica lemani (Collingwood, 1956), Formica rufibarbis (Wasmann, 1915), and in some North American Formica species. They are a major mortality factor in F. sanguinea (Wasmann, 1915: 272-281) and could be so in other species. (Elton, 1991)
|Formica fusca||unknown agent||Spain||Espadaler & Riasol, 1981; Elton, 1991|
|Formica japonica||unknown agent||Japan||Sonobe, 1974; Elton, 1991|
|Formica lemani||unknown agent||Spain||Collingwood, 1956; Espadaler & Riasol, 1981; Elton, 1991|
|Formica lugubris||unknown agent||Spain||Espadaler & Riasol, 1981; Elton, 1991|
|Formica polyctena||unknown agent||Elton, 1991|
|Formica pratensis||unknown agent||Japan||Elton, 1991||as ''Formica nigricans'', needs confirmation|
|Formica rufa||unknown agent||Elton, 1975; Elton, 1991|
|Formica rufibarbis||unknown agent||Elton, 1991|
|Formica sanguinea||unknown agent||Elton, 1991|
|Formica uralensis||unknown agent||Japan||Elton, 1991||needs confirmation|
- Elton, E.T.G. 1989. On transmission of the labial gland disease in Formica rufa and Formica polyctena (Hymenoptera, Formicidae). Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen: Series C: Biological and Medical Sciences 92: 415-459.
- Elton, E.T.G. 1991. Labial gland disease in the genus Formica (Formicidae, Hymenoptera). Insectes Sociaux 38, 91-93 (doi:10.1007/BF01242717).