Title

Energetic Condition of Young-of-the-Year Pacific Cod (Gadus macrocephalus) in the Southeastern Bering Sea

Abstract

Pacific cod (Gadus macrocephalus) is an ecologically and economically important groundfish species in the northern Pacific Ocean. Recent studies that measured abundances of young Pacific cod in the southeastern Bering Sea documented several different types of important nursery habitats occupied by these fish. The purpose of this study was to determine the energetic condition of young-of-the-year Pacific cod from each of these main nursery habitats, by measuring and comparing the mean energy densities (kJ/g) of the fish. Determining the relative energy densities gives insight into how Pacific cod in each habitat are allocating energy stores, and provide a basis for predicting the overwinter survival and recruitment success of the populations. These projections are important to consider when establishing conservation practices and commercial fishing regulations.

Faculty Sponsor

Susanne Altermann

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poster

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Location

Cordiner Hall

Presentation Type

Poster

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Energetic Condition of Young-of-the-Year Pacific Cod (Gadus macrocephalus) in the Southeastern Bering Sea

Cordiner Hall

Pacific cod (Gadus macrocephalus) is an ecologically and economically important groundfish species in the northern Pacific Ocean. Recent studies that measured abundances of young Pacific cod in the southeastern Bering Sea documented several different types of important nursery habitats occupied by these fish. The purpose of this study was to determine the energetic condition of young-of-the-year Pacific cod from each of these main nursery habitats, by measuring and comparing the mean energy densities (kJ/g) of the fish. Determining the relative energy densities gives insight into how Pacific cod in each habitat are allocating energy stores, and provide a basis for predicting the overwinter survival and recruitment success of the populations. These projections are important to consider when establishing conservation practices and commercial fishing regulations.

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