Effects of High pH on Macrobrachium rosenbergii Postlarvae

Charles G. Hummel and Dallas E. Alston

No 261579, 20th Annual Meeting, October 21-26, 1984, St. Croix, U.S. Virgin Islands from Caribbean Food Crops Society

Abstract: By adjusting pH through additions of NaOH solution (~.8N), the response of recently metamorphosed Macrobrachium rosenbergii postlarvae to pH values ranging from 7.5 to 12.0 was determined. At pH 9.0 weak animals and subsequent mortalities were observed. At pH 9.5 or greater, mass mortalities occurred. The effect of high pH resulting from algal photosynthesis in water with a heavy phytoplankton bloom was also evaluated. High mortality rates were recorded in water with a heavy bloom and high pH (10.0-10.5) compared with control water without a bloom and with a lower pH (8.5-9.0).

Keywords: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies (search for similar items in EconPapers)
Pages: 3
Date: 1984-10-21
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Persistent link: https://EconPapers.repec.org/RePEc:ags:cfcs84:261579

DOI: 10.22004/ag.econ.261579

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