Summary
In the fat body of ovipositing female Colorado beetles, two types of lobes occur. The first type, the internal fat body, is highly specialised for protein synthesis. A lobe of the second type, the peripheral fat body, contains two types of cells, oenocytes and glycogen cells. Ovariectomy, performed at adult moult results in hypertrophy of the glycogen cells of the peripheral fat body. The lobes are characterized by the storage of lipid bodies and glycogen and by numerous mitochondria. Short-day conditions ab ovo, which induce diapause in adults, also result in hypertrophy of glycogen cells of the peripheral fat body. Furthermore, only few mitochondria occur but many proteinaceous bodies may be observed, which conditions are in contrast to the observed effects of castration. The fat body of allatectomized long-day females, has the same structure as that of short day beetles. Consequently a lack of juvenile hormone induces the proteinaceous bodies.
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Butterworth, F. M., Bodenstein, D.: Adipose tissue of Drosophila melanogaster. II. The effect of adult environment on growth, protein deposition and histolysis in the larval fat body. J. exp. Zool. 164, 251–266 (1967).
—, King, R. C.: Adipose tissue of Drosophila melanogaster. I. An experimental study of the larval fat body. J. exp. Zool. 158, 141–153 (1965).
Collins, J. V.: The hormonal control of fat body development in Calpodes ethlius (Lepidoptera). J. Ins. Physiol. 15, 341–352 (1969).
Engelmann, F.: Endocrine control of reproduction in insects. Ann. Rev. Entomol. 13, 1–26 (1968).
Gaudecker, B. von: Über den Formwechsel einiger Zellorganelle bei der Bildung der Reservestoffe im Fettkörper von Drosophila-Larven. Z. Zellforsch. 61, 56–95 (1968).
Ishizaki, H.: Electron microscope study of changes in the subcellular organisation during metamorphosis of the fat body cell of Philosamia cynihia ricini. J. Ins. Physiol. 11, 845–855 (1969).
Kort, C. A. D. de: Hormones and the structural and biochemical properties of the flight muscles in the Colorado beetle. Thesis, Wageningen, The Netherlands (1969).
Locke, M., Collins, J. V.: The structure and formation of protein globules in the fat body of an insect. J. Cell Biol. 26, 857–884 (1965).
Loof, A. de: Causale mechanismen bij de vitellogenese van de Colorado Kever, Leptinotarsa decemlineata Say. Thesis. University of Ghent, Belgium (1969).
—, Wilde, J. de: The relation between haemolymph proteins and vitellogenesis in the Colorado beetle. J. Ins. Physiol. 16, 157–169 (1970a).
- - The hormonal control of the vitellogenic female protein in the Colorado beetle. J. Ins. Physiol. (in press).
Minks, A. K.: Biochemical aspects of juvenile hormone action in the adult Locusta migratoria (Thesis). Arch. néerl. zool. 17, 175–257 (1967).
Nair, K. S. S., Karnavar, G. K.: A cytological study of changes in the fat body of Tragoderma granarium during metamorphosis with special reference to the proteinaceous globules. J. Ins. Physiol. 14, 1651–1660 (1968).
Odhiambo, T. R.: The structure and histochemistry of the fat body in the Locust Schistocerca gregaria. J. Cell Sci. 2, 235–242 (1968).
Paillot, A., Noël, R.: Sur l'origine des inclusions albuminoides du corps adipeux des insectes. C. R. Acad. Sci. (Paris) 182, 1044–1046 (1926).
Vrensen, G. F. J. M., Kuyper, C. N. A.: Involvement of rough endoplasmic reticulum and ribosomes in early stages of glycogen repletion in rat liver. J. Microscop. 8, 599–614 (1969).
Walker, P. A.: An electron microscope study of the fat body of the moth Philosamia during growth and metamorphosis. J. Ins. Physiol. 12, 1009–1018 (1968).
Wigglesworth, V. B.: Cytological changes in the fat body of Rhodnius during starvation, feeding and oxygen want. J. Cell Sci. 2, 243–256 (1967).
Wilde, J. de, Staal, G. B., de Kort, C. A. D., de Loof, A., Baard, G.: Juvenile hormone titer in the haemolymph as a function of photoperiodic treatment in the adult Colorado beetle. Proc. kon. ned. Acad. Wet. 71, 321–326 (1968).
—, Stegwee, D.: Two major effects of the corpus allatum in the adult Colorado beetle. Arch. neerl. zool. 13 Suppl., 277–289 (1958).
Wyss-Huber, M., Lüscher, M.: Influence of juvenile hormone on ovarian protein synthesis in Leucophaea maderae. Fift Conf. Eur. Endocrin. Utrecht, The Netherlands (1969).
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Dr. A. De Loof gratefully acknowledges a scholarship as “Aspirant” of the National Foundation of Scientific Research in Belgium. We wish to thank Prof. Dr. h. C. J. de Wilde for his suggestions and helpfull criticism. We also thank Mr. W. Bohijn for his help in operating the EM and Mr. G. Maes for photography.
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De Loof, A., Lagasse, A. Juvenile hormone and the ultrastructural properties of the fat body of the adult Colorado beetle, Leptinotarsa decemlineata say. Z. Zellforsch. 106, 439–450 (1970). https://doi.org/10.1007/BF00335785
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DOI: https://doi.org/10.1007/BF00335785