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Pattern of Protein, Glycogen and Trehalose During Development of Polyphenic Forms in the Aphid Lipaphis erysimi (Kalt.) (Aphididae:Hemiptera)

Published online by Cambridge University Press:  19 September 2011

Pushpinder J. Rup
Affiliation:
Insect Physiology Laboratory, Department of Biology, Guru Nanak Dev University, Amritsar-143005, India
Satwinder K. Sohal
Affiliation:
Insect Physiology Laboratory, Department of Biology, Guru Nanak Dev University, Amritsar-143005, India
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Abstract

Polyphenism is a common feature in the mustard aphid, Lipaphis erysimi (Kalt.) in tropical countries. The function related changes in basic biochemical pool are reported during development of polyphenic forms. A gradual decrease in the protein content in this aphid was recorded, as the nymphs advanced in their instar number and reached adult stage. However, the protein content was significantly lower in the apterous forms as compared to alate. The number, density and mobility of protein bands varied as the nymphs passed through different instars and the number of bands was more in alate forms. The glycogen and trehalose contents showed a decrease upto the third instar and showed an increase in the fourth instar, but again declined in the adults of both the phases.

Résumé

Le polyphenisme est un trait commun du puceron de la moutarde, Lipaphis erysimi (Kalt.) dans les pays tropicaux. La fonction rattachée au changement de la mare biochimique de base fut observée durant le developpement des formes polypheniques. Une decroissance graduée de la proteine de ce puceron fut notée chez les nymphes pendant un stage avance dans leur developpement et chez les adultes. La contenance en proteines fut d'une manière significative plus basse chez les formes sans ailes que celles ailées. Le nombre, la densité et mobilité des bandes proteiques variaient selon le stage du developpement des nymphes et le nombre des bands etait plus elèvé chez les formes ailées. La contenance en glycogène et trehalose baissa jusqu'au troisième stage du developpement et augmenta au quatrième mais baissa chez les adultes.

Type
Research Articles
Copyright
Copyright © ICIPE 1988

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