Table 4: Comparison of experimental and control variables in day-night laboratory trials in jars in 2005 versus short columns in 2007.

Variable20052007

EnvironmentIncubatorT-controlled walk-in incubator
Light cycle12: 1216: 8
Egg collection siteMonterey, CAPalos Verdes, CA
Egg sourceSingle femaleMultiple females
Data collection interval6 hrs4 hrs
Dark phase starting time17002100
PAR range51–144242–298
Response factor% demersalZCM
Column dimensions8 d × 15 h cm9.5 d × 15 h cm
Phytoplankton presentyesno