Abstract
ABSTRACT Age-1 and age-3 larval sea lamprey were separately held in circular cages (0.16 m2) with 30 cm of optimal habitat for one year. The five treatments for each age class were: 25, 50, 100, 150, and 200 larvae/m2. Growth of age-1 larvae was significantly higher than age-3 larvae (P<0.006), although survival was not significantly different between ages (P<0.546). Density treatments did not significantly affect growth and survival of the age treatments (P<0.195; P<0.868). These results suggest that age and biomass may be important variables to measure when examining potential demographic effects on larval lamprey life history characteristics.
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