Survival of Largemouth Bass Embryos at Low Dissolved Oxygen Concentrations
- 1 January 1975
- journal article
- research article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 104 (1) , 122-128
- https://doi.org/10.1577/1548-8659(1975)104<122:solbea>2.0.co;2
Abstract
We identified the low oxygen concentrations that significantly decreased survival of largemouth bass (Micropterus salmoides) embryos incubated at three temperatures in both stationary and moving containers. Embryos developed and hatched at oxygen concentrations as low as 1.0, 1.1, and 1.3 mg/liter at temperatures of 15, 20, and 25 C, respectively, but concentrations below 2.0, 2.1, and 2.8 mg/liter significantly lowered survival. Most mortality at these oxygen concentrations occurred during hatching. At oxygen concentrations below 1.0 mg/liter, survival during the prehatching period was higher among those groups of embryos that were moved slowly up and down during incubation than among unmoved embryos; however, moved embryos suffered nearly complete mortality during hatching at all oxygen concentrations.This publication has 0 references indexed in Scilit: