Mysid (mysidopsis bahia) life-cycle test: design comparisons and assessment

摘要

This study examines ASTM Standard E1191-90, "Standard GUide for COnducting Life-cycle Toxicity Tests with Saltwater Mysiks", 1990, using Mysidopsis baia, by comparing several test designs to assess growth, reproduction, and survival. The primary objective was to determine the most labor efficient and statistically powerful test design for the measurement of statistically detectiable effects on biologically sensitive endopoints. Five different test designs were varying compaftment size, number of groanisms per compartment, and sex ratio. Results showed that while paired organisms in the ASTM design had the highest rate of reproduction among designs tested, no individual design has grater stistical power to detect differences in reproductive effects. Reproduction was not statistically different between organisms paired in the ASTM design and those with randomized sex ratios using larger test compartments.