Osmoregulation in crabs?

Question

Do crabs placed in sea water with differetn salinities from that of natural sea water (35%) have a higher metabolic rate as measaured by oxygen consumtpion?
The crabs are fiddler crabs and live in interdidal environments.

Answer 1

This is quite a hard question. I did find a reference from 1976 related to Sodium extrusion at
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1270990&dopt=Abstract

possibly this reference also
http://cat.inist.fr/?aModele=afficheN&cpsidt=14442008