Thereafter, experimental fish were hand-fed to satiation, by throwing small amounts of pellets into the tank until fish lost interest in eating, with commercial fish food (Skretting Inc.,) from 6 (younger fry) to 2 (juveniles) times every day.
Pups were culled at the specified age for juvenile time points.
The early juvenile time points (12, 15, 19, 25 days) clustered together, as did the consecutive stages puberty (6 weeks), mature virgin (10 weeks), and early gestation (gestational day 5).
In the European hare, exploration forays occur predominantly in juveniles, the time at which most hares disperse.
Random mating avoided assortative mating (e.g., early with early, late with late), which can bias heritability estimates, although there is no necessary correlation between timing of emergence in adults and the phenotypic trait measured, juvenile development time.
He eventually turned his efforts toward children's literature and released (1963) his first juvenile fantasy, Time Cat: The Remarkable Journeys of Jason and Gareth.
The model predicts that a 500 kg leatherback would have to have a metabolic rate twice that of our swimming juveniles (four times resting) to keep a body temperature of 20°C in these extremely cold waters.
If offspring from hybrid (between population) crosses were intermediate to offspring from pure-bred (within population) crosses in juvenile development time, then we would conclude development time is a quantitative trait (controlled by multiple genes, each of small effect).
Second, we screened for evidence of a genetic differentiation between populations in juvenile development time by comparing cumulative distributions of development times from egg to pupal stage, given that individuals pupated.
The norm of reaction that governs juvenile migration time might evolve over time, especially in response to changes in climate variability, but we do not yet have enough information to predict this process.
