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Effect of gibberellic acid (GA3) on the protein, lipid and carbohydrate contents of banana fruit fly, Zaprionus paravittiger larvae

Published online by Cambridge University Press:  19 September 2011

Pushpinder J. Rup ,
Rabinder Kaur  and
Jatinder Kaur
Pushpinder J. Rup
Affiliation:
Department of Zoology, Guru Nanak Dev University, Amritsar-143005, India
Rabinder Kaur
Affiliation:
Department of Zoology, Guru Nanak Dev University, Amritsar-143005, India
Jatinder Kaur
Affiliation:
Department of Zoology, Guru Nanak Dev University, Amritsar-143005, India
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Abstract

The influence of gibberellic acid (GA3), a plant growth regulator (PGR), on the protein, total lipid, total carbohydrate, glycogen and trehalose contents of the banana fruit fly, Zaprionus paravittiger (Godbole and Vaidya) (Diptera: Drosophilidae), was investigated by feeding 63-h-old larvae on artificial diet containing 1000, 2000 and 4000 ppm GA3 for 30 and 50 h. The maximum increase in the protein content was recorded for the 1000 ppm GA3 treatment. Significant decreases in the total lipid and total carbohydrate contents were recorded at 1000 and 2000 ppm while the 4000 ppm treatment significantly increased their levels. Glycogen content was significantly decreased by all the tested GA3 concentrations. The possible reasons for the observed changes in these biochemical components are discussed.

Résumé

On a incorporé 1000, 2000 et 4000 ppm de l'acide gibbérellique-AG3 (un régulateur de croissance des plantes), dans la diète artificielle pour moucheron de la banane, Zaprionus paravittiger, (Godbole and Vaidya) (Diptera: Drosophilidae); afin d'examiner les teneurs en protéines, lipides totaux, hydrates de carbone totaux, glycogène et tréhalose chez une larve âgée de 63 heures et nourrie sur cette diète durant 30 et 50 heures. L'augmentation maximale du taux de protéine fut observée pour le traitement 1000 ppm de GAG3. On a aussi remarqué une diminution considérable du taux de lipides totaux et hydrates de carbone totaux dans les traitements 1000 et 2000 ppm alors que ce taux a significativement augmenté pour le traitement 4000 ppm. La concentration de glycogène a considérablement chuté dans tous les traitements. Les raisons probables des changements observés au sein de ces composants biochimiques sont discutées.

Keywords

gibberellic acidplant growth regulatorlipidsproteinscarbohydratesZ. paravittigerbanana fruit flyacide gibbérelliquehydrates de carbonelipidesmoucheron de la bananeprotéinesrégulateur de croissance des plantesZaprionus paravittiger
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 18 , Issue 2 , June 1998 , pp. 145 - 148
Copyright
Copyright © ICIPE 1998

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