. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Vol. 133, No. 2 Xf ^ / October, 1967 THE BIOLOGICAL BULLETIN PUBLISHED BY THE MARINE BIOLOGICAL LABORATORY HEMOLYMPH PROTEINS AND REPRODUCTION IN PERIPLANETA AMERICANA: THE NATURE OF CONJUGATED PROTEINS AND THE EFFECT OF CARDIAC-ALLATECTOMY ON PROTEIN METABOLISM1 K. G. ADIYODI AND K. K. NAYAR Department of Zoology, University of Kerala, Trivandntin-7, S. India That cardiacectomy results in a loss of urates from the fat bodies (Bodenstein, 1953 ) of the American cockroach is indicative of a role for the corpora cardiaca in pr
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Vol. 133, No. 2 Xf ^ / October, 1967 THE BIOLOGICAL BULLETIN PUBLISHED BY THE MARINE BIOLOGICAL LABORATORY HEMOLYMPH PROTEINS AND REPRODUCTION IN PERIPLANETA AMERICANA: THE NATURE OF CONJUGATED PROTEINS AND THE EFFECT OF CARDIAC-ALLATECTOMY ON PROTEIN METABOLISM1 K. G. ADIYODI AND K. K. NAYAR Department of Zoology, University of Kerala, Trivandntin-7, S. India That cardiacectomy results in a loss of urates from the fat bodies (Bodenstein, 1953 ) of the American cockroach is indicative of a role for the corpora cardiaca in protein metabolism, and it is quite possible that this effect may be related to the neurosecretory factors abundantly stored in this organ (Scharrer, 1955). The corpora cardiaca are also known to play a role in carbohydrate metabolism : admin- istration of semi-purified extracts of the cardiaca results in this species in increased blood trehalose levels at the expense of fat body glycogen, and this has been found to be the result of increased phosphorylase activity (Steele, 1961, 1963 ). Evidence has accumulated to suggest that the corpus allatum plays a role in lipid and protein metabolism in female Periplaneta ainericana: allatectomy induces fat body hyper- trophy (Bodenstein, 1953; Mills, Greenslade and Couch, 1966) and slows the turn- over of phospholipid and triglyceride fractions (Vroman, Kaplanis and Robbins, 1965) ; it affects RNA synthesis (Thomas and Nation, 1966b) and results in adult females in increased blood protein concentration due to non-utilization (Mills, Greenslade and Couch, 1966). The corpora allata are known particularly to influence the formation and utilization of a sex-specific protein in adult females of Periplaneta auicrlcana (Menon, 1963, 1965; Adiyodi and Nayar, 1966; Thomas and Nation, 1966a). The nature of the conjugated proteins of this species in relation to the molting and clotting processes has been described in some detail by Siakotos (1960a,
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
