The effect of sodium chlorite solutions on zebra mussel mortality
- Subdev Canada Inc., Ste-Julie, Quebec (Canada)
- BiO2xy Incorporated, Raleigh, NC (United States)
The effect of four dilutions, 8 ppm, 40 ppm, 120 ppm and 473 ppm of the stock solution of a first product, Z-8, on zebra mussel mortality was investigated in static continuous exposure systems and compared to controls. The entire size class spectrum of the mussel population present at the sampling site was tested by leaving mussels attached to their original rock substrata. Two size class grouping of mussels, 13 mm and less and more than 13 mm in length, were exposed in the same test chambers but were analyzed separately. No mortality occurred in the controls. Concentration 8 ppm had no effect after 166 hours on both size class groupings. Concentrations 40, 120 and 473 ppm had observable killing effect within the 331 hours of experiment for both size groupings. The smaller mussels died faster than the larger ones. Another product, Z-11, was similarly tested during fall 1994 with dilutions 8, 40, 80 and 120 ppm. At 8 ppm dilution, Z-11 had induced only little mortality on both size class groupings after 739 hours. At 40, 80 and 120 ppm dilutions, Z-11 had interesting killing effect for both mussel size groupings within the 739 hours of experiment considering the somehow intermittent treatment used. The results already appear to show that sodium chlorite solutions have the potential for eventually becoming a surrogate to the use of chlorine for the control of zebra mussels. That is because they already show a good killing efficiency without being involved in the formation of undesired by-products such as the use of chlorine is. On this purpose, the product is engaged in the process of homologation by Agriculture Canada for it use as treatment against zebra mussels.
- Research Organization:
- Electric Power Research Inst. (EPRI), Palo Alto, CA (United States)
- OSTI ID:
- 146949
- Report Number(s):
- EPRI-TR-105116; CONF-9502124-; TRN: 95:007969-0008
- Resource Relation:
- Conference: 5. international Zebra mussel and other aquatic nuisance organisms conference, Toronto (Canada), 14-21 Feb 1995; Other Information: PBD: Jun 1995; Related Information: Is Part Of Proceedings of the fifth international zebra mussel and other aquatic nuisance organisms conference 1995; Ackerman, J.D. [Univ. of Northern British Columbia, Prince George (Canada)]; PB: 494 p.
- Country of Publication:
- United States
- Language:
- English
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