Difference between revisions of "Labial Gland Disease"

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===Known Ant Hosts===
 
===Known Ant Hosts===
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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)
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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)

Ant Pathogen Species Locality Source Notes
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

References