Test of a foraging-bioenergetics model to evaluate growth dynamics of endangered pallid sturgeon (Scaphirhynchus albus)

作者: David Deslauriers , Laura B. Heironimus , Steven R. Chipps

DOI: 10.1016/J.ECOLMODEL.2016.05.017

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摘要: Abstract Factors affecting feeding and growth of early life stages the federally endangered pallid sturgeon ( Scaphirhynchus albus ) are not fully understood, owing to their scarcity in wild. In this study was we evaluated performance a combined foraging-bioenergetics model as tool for assessing age-0 Missouri River. laboratory, three size classes larvae (18–44 mm; 0.027–0.329 g) were grown 7 14 days under differing temperature (14–24 °C) prey density (0–9 Chironomidae larvae/d) regimes. After accounting effects water on fish activity, compared observed final weight, length, number consumed values generated from model. When confronted with an independent dataset, provided reliable estimates (within 13% observations) consumption, underscoring usefulness modeling approach evaluating dynamics larval when empirical data lacking.

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