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Memoirs: Preliminary Studies on the Bacterial Cell-mass (Accessory Cell-mass) of Calandra Oryzae (Linn.): The Rice Weevil
1. The bacteria within the ‘bacterial cells’ of Calandra are in the form of bacilli. 2. The bacilli do not pass into the alimentary tract of the larva. 3. In the adult the bacilli pass from theirExpand
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On the Digestion of Wood by Insects
1. The true wood-feeding insects do not depend on micro-organisms for the digestion of wood. Such insects are of two types: ( a ) Without cellulose-breaking enzymes. Insects of this type derive theExpand
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Source and Fate of the Zooxanthellæ of the Visceral Mass of Tridacna elongata
ZOOXANTHELLÆ have been recorded from the visceral mass of Tridacna by Yonge1, who assigned to them together with those of the mantle edge a very significant role in nutrition. According to thisExpand
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Food and the Digestive Processes of the Lamellibranchs
IN most of the recent literature1,2 concerning the food, feeding habits and digestive processes of the lamellibranchs, it is claimed: (1) that the food of this class (septibranchs excepted) consistsExpand
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Memoirs: The Development of the larval and adult mid-gut of Calandra oryzae (Linn.): The Rice Weevil
(i) Embryonic. 1. The blastodermal stage of insects corresponds to the blastula stage of other animals. 2. The primary yolk-cells are a secondary feature of the developing insect egg. 3. The ventralExpand
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1 The relation between certain insects and the intracellular micro‐organisms they harbour is obscure and cannot be described as symbiotic for the following reasons:
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Communication between the Dorsal Edge of the Mantle and the Stomach of Tridacna
THE part of the mantle edge of Tridacna which is reflected upwards and forwards round the exhalant chamber is highly muscular, greatly thickened and harbours myriads of zooxanthellæ (7 µ each) in theExpand
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Memoirs: On the Intracellular Micro-organisms of some Bostrychild Beetles
1. Rhizopertha dominica, F., Sinoxylon ceratoniae, L., and Bostrychoplites Zickeli, Mars., possess paired mycetomes full of bacteria-like micro-organisms. 2. The transmission of the micro-organismsExpand
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Food and Digestive Organs of Lamellibranchs
  • K. Mansour
  • Chemistry, Medicine
  • Nature
  • 14 September 1946
IN his comment on my note in Nature1, Prof. Yonge2 raised the following points: (1) that histological evidence for the secreting function of the digestive diverticula is lacking; (2) that the passageExpand
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