[Taxacom] reactivating genes
cavexplorer at gmail.com
Wed Oct 3 06:11:38 CDT 2012
In 1982 I made some small publications of the accidental occurence of a
sporadic winged male in a parthenogenetic colony of a wingless Lepidoptera
(Luffia ferchaultella, Psychidae).
This species colonies exist in Belgium exclusively parthenogenetic, the
females pose their eggs immediately after emerging without mating. Very
occasionally (less than 1/10.000) a single winged male may occur, with no
function in mating, but showing all the caracteritics of the ancient
ancestor, a bisexual species with winged males. A same case exists in a
parthenogenetic colonie of the psychid species Dahlica triquetrella ("the
male from Aubrig").
The genes for male wings, large pectinate antenna and genitalia structure
have been present but deactivated in the female, and can appearantly be
reactivated through mutation: "Decouverte d'une chrysalide male de Luffia au
sein d'une population de l'espèce parthenogenetique L. ferchaultella., in
ALEXANOR 12(5): 195-198."
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