Difference between revisions of "Labial Gland Disease"

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(Known Ant Hosts)
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==References==
 
==References==
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*Collingwood, C.A., 1956. Aberrations in British ants of the genus Formica. J. Soc. Br. Entomol. 5:193-196.
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*[[Media:Elton, E.T.G. 1975. Females of Formica rufa with enlarged labial glands.pdf|Elton, E.T.G. 1975. Females of ''Formica rufa'' L. (Hym., Formicidae) with enlarged labial glands. Insect Sociaux 22: 405-414]] ({{doi|10.1007/BF02224115}}).
 
*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. 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.
 
*[[Media:Elton,_E.T.G._1991._Labial_gland_disease_in_the_genus_Formica.pdf|Elton, E.T.G. 1991. Labial gland disease in the genus ''Formica'' (Formicidae, Hymenoptera). Insectes Sociaux 38, 91-93]] ({{doi|10.1007/BF01242717}}).
 
*[[Media:Elton,_E.T.G._1991._Labial_gland_disease_in_the_genus_Formica.pdf|Elton, E.T.G. 1991. Labial gland disease in the genus ''Formica'' (Formicidae, Hymenoptera). Insectes Sociaux 38, 91-93]] ({{doi|10.1007/BF01242717}}).
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*Espadaler, G.X., Riasol, B.J.M. 1981. Secretergates de ''Formica'' sp.: una morfologia de origen patologico en hormigas. Revista Ibérica de Parasitología 41: 539-549.
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*Sonobe, R. 1974. On the occurrence of pseudogyne of ''Formica japonica'' Motschulsky (Hymenoptera, Formicidae) in Japan. Kontyû 42: 401-403.
  
 
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Revision as of 03:29, 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 pratensis (as 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