| | 1 | Author
| L. A. Buscarlet, A. Ferran, M. Larroque | Requires 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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| default:Reihe_C/35/ZNC-1980-35c-0319.pdf | | | | Identifier
| ZNC-1980-35c-0319 | | | | Volume
| 35 | |
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