Size‐independent growth in fishes: patterns, models and metrics

摘要: A combination of a dynamic energy budget (DEB) model, field data on Atlantic salmon Salmo salar and brown trout trutta laboratory was used to assess the underlying assumptions three different metrics growth including specific rate (G), standardized mass-specific (GS) absolute in length (GL) salmonids. Close agreement found between predictions DEB model linear parabolic mass. Field comparing spring rates age 1+ year 2+ demonstrated that all years larger fish exhibited significantly lower G, but differences terms GS GL depended examined. For trout, also consistently slower G grew at similar as GL. Laboratory results revealed during 0+ (autumn) divergence future smolts non-smolts with displaying higher than non-smolts, however, both indicated maintain relatively fast into late autumn where suggested exhibit sharp decrease from October November. During spring, patterns were decoupled Smolts maintained though April not These suggest can be useful alternative size-independent measure immature In addition, certain stanzas, may highly correlated The decoupling mass over ontogeny, necessitate adequately describe variation depending ontogenetic stage particularly if life histories differ.