spacer gif spacer gif spacer gif spacer gif spacer gif
QUICK SEARCH:   [advanced]


spacer gif
     Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents    

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Machin, J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Machin, J.

Journal of Experimental Biology, Vol 65, Issue 3 603-615, Copyright © 1976 by Company of Biologists

JOURNAL ARTICLES

Passive exchanges during water vapour absorption in mealworms (Tenebrio molitor): a new approach to studying the phenomenon

J Machin

The weights of single mealworms were continuously recorded at 20 degrees C during exposure to periods of constant humidity and to abrupt changes in atmospheric vapour pressure. Two exchange stages were recognized in each animal. Weight changes were either limited to slow losses, suggesting transpiration through the external cuticle, or showed more rapid humidity-dependent gains as well as losses. Rapid exchanges indicated that water was gained or lost through permeable barriers, from a fluid compartmet of significantly lower vapour pressure than the haemolymph, equivalent to about 90% R.H. Weight gains and losses during humidity changes provided evidence of a significant, passively exchanging fluid compartment located between the exchange surface and absorbing mechanism. Weight changes in faecal pellets following their elimination provide further support for a rectal site of atmospheric absorption.


This article has been cited by other articles:


Home page
 J. Exp. Biol.Home page
J. C. Wright and P. Westh
Water vapour absorption in the penicillate millipede Polyxenus lagurus (Diplopoda: Penicillata: Polyxenida): microcalorimetric analysis of uptake kinetics
J. Exp. Biol., July 1, 2006; 209(13): 2486 - 2494.
[Abstract] [Full Text] [PDF]

Home page
 J. Exp. Biol.Home page
L. L. Hansen, H. Ramlov, and P. Westh
Metabolic activity and water vapour absorption in the mealworm Tenebrio molitor L. (Coleoptera, Tenebrionidae): real-time measurements by two-channel microcalorimetry
J. Exp. Biol., February 1, 2004; 207(3): 545 - 552.
[Abstract] [Full Text] [PDF]


© The Company of Biologists Ltd 1976