Summary
The liver of a scorpion, Androctonus australis (Arachnida), was examined electron-microscopically and cytochemically, emphasizing correlations between structure, cytochemistry and physiology. The liver consists of digestive diverticula and interstitial tissue. Digestive divertcula are composed of basophilic cells and digestive cells. Basophilic cells produce exoenzymes. Digestive cells ensure intracellular digestion of nutrients absorbed by pinocytosis and store glycogen, lipids and mineral salts; the wastes of the digestive process (guanine, uric acid, mineral elements, pigments) are concentrated in “brown body vacuoles” which are ejected into the lumen of the diverticula. The interstitial tissue stores glycogen and lipids; it contains many lysosome-like organelles rich in iron.
Fasting induces a decrease of the ratio of the volume of the divertcula to that of the interstitial tissue, a slow disappearance of the reserves in both diverticula and interstitital tissue, an increase of synthesis in the basophilic cells, and a decrease of the number of vacuoles in the digestive cells.
The digestive mode of the scorpions associates a primitive intracellular process with an advanced extracellular process. The interstitial tissue can be considered as homologous to the adipose tissue of insects and myriapods, although it is devoid of urate cells. The excretion of guanine and uric acid has a peculiar meaning, because these purine wastes do not come from endogenous catabolism.
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References
Ahearn GA, Hadley NF (1977) Water transport in perfused scorpion ileum. Am J Physiol 233:198–207
Arnaud J, Brunet M, Mazza J (1978) Studies on the midgut of Centropages typicus (Copepod, Calanoid) I. Structural and ultrastructural data. Cell Tissue Res 187:333–353
Ballan-Dufranais C, Truchet M, Dhamelincourt P (1979) Interest of Raman laser microprobe (MOLE) for the identification of purinic concretions in histological sections. Biol Cell 36:51–58
Bordas L (1907) Considérations générales sur le tube digestif des Scorpions (Buthus europaeus L.). Bull Soc Zool Fr 32:167–169
Boucaud-Camou E, Yim M (1980) Fine structure and function of the digestive cell of Sepia officinalis (Mollusca, Cephalopoda). J Zool 191:89–105
Drouet J, Brunet G, Legrand A, Goyffon M (1971) Comportemenl éleclrophorélique en gel d'acrylamide des isoenzymes de la phosphalase alcaline chez la Souris. CR Soc Biol 165:2060–2065
Gibson R, Barker PL (1979) The decapod hepalopancreas. Ocean Mar Biol Ann Rev 17:285–346
Grégoire J, Grégoire J, Miranda F (1955) Sur la présence de grandes quanlilés de guanine et de faibles quanlilés d'agmaline dans les excréla de deux espèces de Scorpions (Androcton- us australis L. el Androctonus amoreuxi Aud. el Sav.). CR Soc Biol 149:1439–1441
Harlenslein R (1970) Nitrogen metabolism in non-insect arlhropods. In: Campbell JW (ed) Comparative biochemistry of nitrogen metabolism, Academic Press, London, 1, pp 299–385
Hubert M (1978) Données histophysiologiques complémenlaires sur les accumulations minérales el puriques chez Cylindroiulus londinensis (Leach, 1814) (Diplopode, Iuloïdae). Arch Zool Exp Gén 119:669–683
Lal MB, Kanungo MS (1953) Inverlase in Palamnaeus bengalensis. Science 117:57–58
Lamy J, Goyffon M (1969) Elude de la calalase de l'hépalopancréas du Scorpion Androctonus australis L. Cinétique de la décomposition de l'eau oxygénée. Action de l'aminolriazole. CR Acad Se Paris 269:2449–2452
Marloja R (1971) Données préliminaires sur les accumulations de sels minéraux el de déchels du calabolisme dans quelques organes d'Arthropodes. CR Acad Sc Paris 273:368–371
Miller F, Palade GE (1964) Lylic activities in renal protein absorption droplels. J Cell Biol 23:519–552
Millot J, Vachon M (1949) Ordre des Scorpions. In: Grasse PP (ed) Traité de Zoologie, Masson, Paris, 6, pp 386–436
Pal SG (1972) The fine struclure of the digestive lubules of Mya arenaria L. II. The digestive cell. Proc Malac Soc London 40:161–170
Pavlovsky EN, Zarin EJ (1926) On the structure and ferments of the digestive organs of Scorpions. Quart J Micr Sc 70:221–261
Pearse AGE (1972) Histochemistry, theorical and applied. Churchill, London, p 1508
Raghavaiah K, Ramamurthi R (1977) Quantitative distribution of lipid and utilization of 1-14C-acetate in the Scorpion Heterometrus fulvipes (Koch). Comp Physiol Ecol 2:62–66
Serfaty A (1942) Influence du jeûne précédant le repas sur l'activité trypsique, au cours de la digestion, chez les Scorpions. Bull Soc Entomol Fr 47:89–90
Singh A (1967a) Seasonal changes in the glycogen and lipid contents of the Scorpion Palamnaeus bengalensis. Proc Natl Acad Sc India 37:75–76
Singh A (1967b) Uptake of glucose by the Scorpion Palamnaeus bengalensis. Proc Natl Acad Sc India 37:120–122
Sinha RC, Kanungo MS (1967) Effect of starvation on the Scorpion Palamnaeus bengalensis. Physiol Zool 40:316–390
Srivastava V, Kanungo S (1966) Metabolism of the liver of the Scorpion Palamnaeus bengalensis. Comp Biochem Physiol 19:629–632
Vijayalekshmi NR, Kurup PA (1969) Amylase of the hepatopancreas of the Scorpion Heterometrus scaber. Indian J Exp Biol 7:266–267
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Goyffon, M., Martoja, R. Cytophysiological aspects of digestion and storage in the liver of a scorpion, Androctonus australis (Arachnida). Cell Tissue Res. 228, 661–675 (1983). https://doi.org/10.1007/BF00211482
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DOI: https://doi.org/10.1007/BF00211482