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1Author    L. A. Buscarlet, A. Ferran, M. LarroqueRequires cookie*
 Title    Water Budget in Larvae of Semiadalia undecimnotata Schn. Studied with Tritiated Water  
 Abstract    The rates of water vapor entry, body water clearance and the net loss of water in larvae o f Semi­ adalia undecimnotata (3rd and 4th stage) of different weights were determ ined from observed changes in the mass of body water and its tritium content for each of several relative hum idities (RH) in am bient air. The water clearance and vapor entry rates as a function o f weight increases from emergence to the middle of the stage and then rem ains constant. The vapor entry rate increases with RH while the clearance rate is independant o f RH. The perm eability of the cuticle has not the same value in the inward and in the outward direction. The perm eability to body water escape is not affected by RH and reaches a m axim um at the m iddle of the stage. The inward perm eability does not depend on weight and increases appreciably as RH reaches saturation. One day of starvation affected these movements o f water most in larvae at the m iddle o f their stage. These results are discussed in relation to some physiological data concerning the cuticular struc­ ture and its evolution with age. 
  Reference    Z. Naturforsch. 35c, 319—325 (1980); received N ovem ber 1 1979 
  Published    1980 
  Keywords    Semiadalia undecimnotata, Tritiated Water, Transpiration, Water Absorption, Cuticle Permeability 
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 TEI-XML for    default:Reihe_C/35/ZNC-1980-35c-0319.pdf 
 Identifier    ZNC-1980-35c-0319 
 Volume    35