Role of corpora-allata and brain of adult female Lohita grandis gray.
Removal of the corpora allata from the emerging female adults of L. grandis caused a rapid and significant increase in the contents of total carbohydrate, glycogen, total lipids, cholesterol, total proteins and RNA in the fat body, and a significant drop in the contents of trehalose free fatty acids (FFA), phospholipids, free amino acids (FAA) and also in the activity of acid and alkaline phosphatase, glutamate oxaloacetate transaminase (GOT), glutamate pyruvate transaminase (GPT) and exterase in the fat body, in comparison with the sham-operated controls. Treatment with juvenile hormone analogue (JHa) of the allatectomized insects significantly reverses the effects produced by allatectomy (P less than or equal to 0.01). Similarly, removal of the brain produced similar responses in the fat-body but with some exceptions such as the decrease of total protein and RNA and increase significant of FAA as compared to the sham-operated controls. Simultaneous removal of corpora-allata and brain produces a rapid increase in the contents of total carbohydrate, glycogen, total lipid, cholesterol, FAA and the activity of acid phosphatase in comparison with all other treatments performed in this study, while the contents of trehalose, phospholipid, FFA, total protein, RNA and the activity of GOT, GPT, general esterase and alkaline phosphatase in the fat-body decreased compared to all other treatments. The results obtained are discussed in relation to the neuro-endocrine control of metabolism in insects.
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L
Saha
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Mandal
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DK
Choudhuri
D000818:Animals; D001921:Brain / Q000502:physiology*; D050260:Carbohydrate Metabolism; D002425:Cautery; D003335:Corpora Allata / Q000502:physiology*; D005216:Fat Body / Q000201:enzymology / Q000378:metabolism; D005260:Female; D006003:Glycogen / Q000378:metabolism; D007313:Insecta / Q000502:physiology*; D007605:Juvenile Hormones / Q000494:pharmacology; D050356:Lipid Metabolism; D014199:Trehalose / Q000378:metabolism
D007605:Juvenile Hormones; D006003:Glycogen; D014199:Trehalose