Effects of hexavalent chromium on development of crabs, Rhithropanopeus harrisii and Callinectes sapidus
Published
Journal Article
Survival of Rhithropanopeus harrisii larvae from hatching to first crab stage occurred in Na2CrO4 concentrations from 1.1 to 29.1 ppm. Estimated LC50 for complete zoeal development was 17.8 ppm Na2CrO4 and it was 13.7 ppm for development to first crab stage. A concentration of 1.1 ppm Na2CrO4 was nontoxic, while Na2CrO4 concentrations of 7.2 and 14.5 ppm were sublethal and concentrations of 29.1 to 58.1 ppm were acutely toxic. Low concentrations of Na2Cr04 caused an increase in swimming speed and high concentrations caused a decline. Survival of Callinectes sapidus larvae occurred in Na2CrO4 concentrations from 1.1 to 4.7 ppm. The LC50 for complete zoeal development was estimated to be 2.9 ppm Na2CrO4 and the LC50 for development to first crab stage was estimated to be 1.0 ppm Na2CrO4 The total Cr in sodium chromate is 32% by weight (Tacey,1981), hence, the total Cr concentrations tested were 32% of the Cr salts given above. Statistical analyses of the data on survival, duration and mortality of larvae are presented. © 1984 D. Reidel Publishing Company.
Full Text
Duke Authors
Cited Authors
- Bookhout, CG; Monroe, RJ; Forward, RB; Costlow, JD
Published Date
- January 1, 1984
Published In
Volume / Issue
- 21 / 1-4
Start / End Page
- 199 - 216
Electronic International Standard Serial Number (EISSN)
- 1573-2932
International Standard Serial Number (ISSN)
- 0049-6979
Digital Object Identifier (DOI)
- 10.1007/BF00163624
Citation Source
- Scopus