Integumentary uptake of short-chain carboxylic acids by two freshwater oligochaetes,Tubifex tubifex andLumbriculus variegatus: Specificity of uptake and characterization of transport carrier

✍ Scribed by Sedlmeier, Ulrich A. ;Hoffmann, Klaus H.

• Book ID: 102891773
• Publisher: John Wiley and Sons
• Year: 1989
• Tongue: English
• Weight: 622 KB
• Volume: 250
• Category: Article
• ISSN: 0022-104X
• DOI: 10.1002/jez.1402500203

✦ Synopsis

The freshwater oligochaete Tubifex tubifex can take up considerable amounts of dissolved organic material (DOM) from ambient water (Hipp et al. J. Exp. Zool. 1986; 240:289-297). This paper describes evidence that the uptake system is located in the body wall. The system preferentially transports unsubstituted aliphatic monocarboxylic acids with chain lengths of two and three carbons. The proteinaceous nature of the monocarboxylate "carrier" is suggested by results from studies with covalent inhibitors [a-cyano-4-hydroxycinnamate; para-chlormercuriphenyl-sulfonic acid (PCMBS)] and by the temperature dependence of transport. The characteristics of the uptake system are similar to those of the systems for transporting monocarboxylic acids in mammals. In another freshwater oligochaete, LurnbricuZus uariegatus, the rates of uptake of DOM