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OLS Field Name OLS Field Data
Main Title Respiration and Osmoregulation of the Estuarine Crab 'Rhithropanopeus harrisii' (Gould): Effects of the Herbicide, Alachlor.
Author Diamond, D. W. ; Scott, L. K. ; Forward, R. B. ; Kirby-Smith, W. ;
CORP Author Duke Univ., Beaufort, NC. Marine Lab.;Environmental Research Lab., Gulf Breeze, FL.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/169;
Stock Number PB90-129545
Additional Subjects Herbicides ; Respiration ; Crabs ; Salinity ; Reprints ; Rhithropanopeus harrisii ; Osmoregulation ; Alachlor ; Side effects ; Dose-response relationships
Holdings
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Status
NTIS  PB90-129545 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/10/1990
Collation 8p
Abstract
The effects of a sudden decrease in salinity and exposure to sublethal concentrations of the herbicide, Alachlor, on osmoregulation and respiration of the crab, Rhithropanopeus harrisii, were studied. Crabs were hyperosmotic regulators at salinities below 24 ppt and became hypoosmotic at higher salinities. Upon a salinity decrease from 20 to 1 ppt, crabs adjusted their haemolymph osmolality to a stable hyperosmotic level in 8 hr. Alachlor concentrations to 50 ppm did not affect this adjustment. A salinity decrease from 10 to 0 ppt elevated V(sub O2) and the critical oxygen tension. This response was unaffected by Alachlor concentrations as high as 25 ppm. (Copyright (c) 1989 Pergamon Press plc.)