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Antennal Morphology In The Developing Polyphenics Of Liphaptis Erysimi (kalt.) (Hemiptera: Aphididae)

Published online by Cambridge University Press:  19 September 2011

Pushpinder J. Rup
Affiliation:
Department of Zoology, Guru Nanak Dev University, Amritsar — 143005, India
Parvinder K. Kalra
Affiliation:
Department of Zoology, Guru Nanak Dev University, Amritsar — 143005, India
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Abstract

The present study revealed that the ratio of antennal to body length in Lipaphis erysimi (Kalt.) increased from 0.55: 1.00 in the first instar to 0.75: 1.00 in the adult alatae as compared to apterae, where the ratio stayed almost the same. The antenna showed specific growth regions i.e. first and fourth annuli, where the increase in size was more compared to other parts. Five morphologically distinct types of sensilla were recorded i.e. sensilla companiform. sensilla trichodea with enlarged spatulate tips, sensilla trichodea with tapering uniporous tips, plate organs and coeloconic pegs. The distribution pattern of these sensilla showed that the number of sensilla trichodea increased during the development, the increase was more in alatae compared to apterae. The secondary sensoria were restricted to adult alatae only, but could be seen under the cuticle in fourth instar alatae. In addition, the variation in the surface sculpturing in the form of scale-like projections were also observed on the antenna.

Résumé

L'étude à present a révélé que la proportion de l'antenne à la longeur du corps en Liphaphis erysimi (Kalt.) a augmenté de 0.55:1.00 dans le premier instar à 0.75–1.00 dans l'adulte alatae en comparaison avec apterae, où la propodrtion a reste le mème. L'antenne a montré des regions spécifique de développement ou augmentation en taille a été comparé plus qu àux autres sections. Cinq distinct types morphologique de sensilla ont été registré; Sensilla companiform, sensilla trichodea avec les bouts spatulé agrandi; sensilla trichodea avec les bouts uniporous en tuseau, les orgues plat et les coeloconic chevillers. La modele de distribution de ces sensilla a montré que les numéros de sensilla trichodea a augmenté pendant le developpement l'augmentation a été plus dans l'alatae en comparison avec les apterae. Le sensoria secondaire a été limite aux adultes alatae seulement, mais on peut les voir sovs le épiderme, dans le quatrième instar alatae. En plus, le variation dans le surface sculpture comme les projections echelles ont éte auni obscive sur l'antenne.

Type
Research Artilces
Copyright
Copyright © ICIPE 1993

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