Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-24T15:58:53.105Z Has data issue: false hasContentIssue false
  • English
  • Français

Eggshell Fine Structure of Amata passalis F. (Lepidoptera: Amatidae), A Pest of Mulberry

Published online by Cambridge University Press:  19 September 2011

Vineet Kumar ,
S. Rajadurai ,
A. M. Babu  and
B. K. Kariappa
Vineet Kumar
Affiliation:
Electron Microscopy Unit, Central Sericultural Research and Training Institute, Mysore-570 008, India
S. Rajadurai
Affiliation:
Electron Microscopy Unit, Central Sericultural Research and Training Institute, Mysore-570 008, India
A. M. Babu
Affiliation:
Electron Microscopy Unit, Central Sericultural Research and Training Institute, Mysore-570 008, India
B. K. Kariappa
Affiliation:
Electron Microscopy Unit, Central Sericultural Research and Training Institute, Mysore-570 008, India
Get access

Abstract

The eggshell fine structure of a lepidopteran pest of mulberry, Amata passalis F. (Lepidoptera: Amatidae), was investigated using scanning electron microscopy. The micropylar rosette around the micropyle, shell imprints, aeropyles and regional differentiation were studied. The surface of the amatid eggshell had a highly decorated chorion with structural difference at the anterior and posterior poles. The micropylar structure was at the anterior pole of the spherical eggs (488 ± 0.595 mm in diameter), opposite to its side of attachment to the substratum. The micropylar rosette measured 51.20 ± 0.52 mm in diameter and was formed of 15–19 petal-shaped primary cells. The micropylar opening into the micropylar canal was 3.76 ± 0.52 mm in diameter. The entire surface of the chorion had a reticulate pattern of pentagonal and hexagonal cells, each of which was boarded by 3 to 6 aeropyles of similar size (0.36 ± 0.008 mm in diameter).

Résumé

La structure fine du chorion de l'oeuf du lépidoptère ravageur de la mûre, Amata passalis F. (Lepidoptera: Amatidae), a été étudiée en microscopie électronique à balayage. La rosette micropylaire autour du micropyle, les structures de surface, les aéropyles et les différentiations régionales ont été étudiées. La surface du chorion de l'oeuf est très décorée avec une différence structurale aux pôles antérieur et postérieur. La structure micropylaire est située au pôle antérieur de l'oeuf sphérique (488 ± 0,595 mm de diamètre), à l'opposé de son point de fixation sur le substrat. La rosette micropylaire mesure 51, 20 ± 0,52 mm et est formée de 15–19 cellules primaires en forme de pétale. L'ouverture micropylaire dans le canal micropylaire a un diamètre de 3,76 ± 0,52 mm. Toute la surface du chorion présente un dessin réticulé de cellules pentagonales et hexagonales, chacune d'entre elles est bordée par 3 à 6 aéropyles de taille identique (0,36 ± 0,008 mm de diamètre).

Keywords

Amata passalisfine structureeggshellmicropylar rosetteSEMAmata passalisstructure finechorionrosette mycropylaireMET
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 23 , Issue 4 , December 2003 , pp. 325 - 330
Copyright
Copyright © ICIPE 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Arbogast, R. T., Brower, J. H. and Strong, R. G. (1989) External morphology of the eggs of Teinea pallescentella, Tinea occidentella Chambers, and Niditineafuscella (L.) (Lepidoptera: Tineidae). Int. J. Insect Morphol. Embryol. 18, 321–328.CrossRefGoogle Scholar
Beament, J. W. L. (1948) The penetration of insect eggshell. I. Penetration of the chorion of Rhodnius prolixus Stål. Bull. Entomol. Res. 39, 359–383.CrossRefGoogle ScholarPubMed
Downey, J. C. and Allyn, A. C. (1981) Eggs of Riodinidae. J. Lepid. Soc. 34, 135–145.Google Scholar
Fehrenbach, H. (1989) Fine structure of the eggshell of four primitive moths: Hepialus hecta (L.), Wiseana umbraculata (Guenea) (Hepialidae), Mnesarchaea fusilella Walker and M. acuta Philp. (Mnesarchaeidae) (Lepidoptera, Exoporia). Int. J. Insect Morphol. Embryol. 18, 261–274.CrossRefGoogle Scholar
Fehrenbach, H., Dittrich, V. and Zissler, D. (1987) Eggshell fine structure of three lepidopteran pests: Cydia pomonella (L.) (Tortricidae), Heliothis virescens (Fabr.) and Spodoptera littoralis (Boisd.) (Noctuidae). Int. J. Insect Morphol. Embryol. 16, 201–219.CrossRefGoogle Scholar
Hill, L. (1982) Eggs of some Tasmanian Noctuidae (Lepidoptera). Aust. Entomol. Mag. 9, 49–59.Google Scholar
Hinton, H. E. (1981) Biology of Insect Eggs. Pergamon Press, Oxford. 1125 pp.Google Scholar
Korschelt, E. (1887) Zur Bildung der Eihullen, der Mikropyle und Chorionanhànge bei den Insekten. Nova Ada Ksl. Leop. Carol. Dtsch. Akad. Naturforsch. 51, 185–252.Google Scholar
Kumar, V., Babu, A. M., Kariappa, B. K., Jayaswal, K. P., Katiyar, R. L. and Datta, R. K. (1999) Surface ultrastructure of the egg chorion of Spilarctia obliqua Walker (Lepidoptera Arctiidae). Redia 82, 137–143.Google Scholar
Leuckart, R. (1855) Ueber die mikropyle und den feineren Bau der Schalenhaut bei den Insekteneiern. Zugleich ein Beitrag zur Lehre von der Befruchtung. Arch. Anat. Physiol. Wiss, Mediein. Pp. 90–264.Google Scholar
Matheny, E. L. and Heinrichs, E. A. (1972) Chorion characteristics of sod webworm eggs. Ann. Entomol. Soc. Amer. 65, 238–246.CrossRefGoogle Scholar
Margaritis, L. H. (1985) Structure and physiology of the eggshelll, pp. 153–230. In Comprehensive Insect Physiology, Biochemistry and Pharmacology (Edited by Kerkut, G. A. and Gilbert, L. I.). Pergamon Press, Oxford.Google Scholar
Mazzini, M. (1974) Sulla fine struttura del micropila negli insetti. Redia 55, 343–372.Google Scholar
Muller, K. (1938) Histologische untersuchungen uber den entwicklungsbeginn bei einem kleinschmetterlung (Plodia interpunctella). Z. Wiss. Zool. 151, 192–242.Google Scholar
Salkeld, E. H. (1983) A catalogue of the eggs of some Canadian Geometridae (Lepidoptera), with comments. Mem. Entomol. Soc. Can. 126, 3–271.CrossRefGoogle Scholar
Wigglesworth, V. B. and Beament, J. W. L. (1950) The respiratory mechanisms of some insect eggs. Q. J. Micros. Sci. 91, 429–452.Google ScholarPubMed