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The presence of micropyles in the shells of developing and undeveloped eggs of the ladybird beetle Harmonia axyridis (Coleoptera: Coccinellidae)
- Source :
- European Journal of Entomology, Vol 106, Iss 4, Pp 607-610 (2009)
- Publication Year :
- 2009
- Publisher :
- Institute of Entomology, Biology Centre, Czech Academy of Science, 2009.
-
Abstract
- In Hymenoptera and Heteroptera, the absence of micropyles is one criterion for categorizing an egg as trophic. Undeveloped eggs are observed in more than 90% of the egg clusters of the ladybird beetle Harmonia axyridis Pallas. Traditionally, these undeveloped eggs are regarded as "trophic eggs." The surfaces of the eggs of H. axyridis were examined using scanning electron microscopy and the presence of micropyles in the shells of developing and undeveloped eggs determined. Micropyles are circularly distributed around the top of eggs and present in both developing and undeveloped eggs. The number of micropyles in the shells of developing and undeveloped eggs did not differ significantly. Our results indicate that the undeveloped eggs of H. axyridis have micropyles, suggesting that the mechanisms regulating the production of undeveloped eggs in H. axyridis differ from those resulting in the production of trophic eggs by Hymenoptera and Heteroptera.
Details
- Language :
- English
- ISSN :
- 12105759 and 18028829
- Volume :
- 106
- Issue :
- 4
- Database :
- Directory of Open Access Journals
- Journal :
- European Journal of Entomology
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.2244c3dd19694efc81405bb9b40434d2
- Document Type :
- article
- Full Text :
- https://doi.org/10.14411/eje.2009.076