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Case of unilateral wing formation in the female of the glowworm Lampyris noctiluca

✍ Scribed by Ulrike Maas; August Dorn

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
211 KB
Volume
257
Category
Article
ISSN
0362-2525

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✦ Synopsis

Abstract

On July 27, 1999, the first author found a unilaterally winged adult glowworm in a park in the city of Mainz. Except for the wings on the left side, the specimen exhibited female characteristics that extended to external sexual appendages, the lantern and the gonads. The internal organization showed some remarkable differences between right (wingless) and left (winged) side. The right ovary contained three times more mature eggs than the left side and the volume of the corpus allatum of this side was about one‐third larger than that of the left side. This suggests that aptery and egg maturation are affected by corpus allatum activity, i.e., juvenile hormone production. The findings do not support the hypothesis of Naisse ([1966] Arch Biol LiΓ¨ge 77:139–201) that wing formation, as a secondary male characteristic, is controlled by an androgenic hormone from the testes in the glowworm. Thus, the observations on this exceptional specimen have implications for the current hypotheses concerning the control of sexual wing dimorphism in Lampyris noctiluca. J. Morphol. 257:254–258, 2003. Β© 2003 Wiley‐Liss, Inc.

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