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September 5, 2025Marine Mammal ScienceOpen Access

Shifting Harbor Seal (Phoca vitulina) Diet May Reflect Ecosystem Changes in Skagerrak

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Authors

FKFoteini KappaTHTero HärkönenCFCarla Freitas

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Overview

Analysis shows dietary changes in harbor seals related to prey availability, implying environmental impacts.

Key Points

  • Diet composition indicates potential shifts in ecosystem health and biodiversity.
  • 2020 diet included 28 fish species, with sandeel and Norway pout being the most prevalent.
  • Analysis of scat samples using otoliths provided insights into dietary adaptations over time.
  • Findings stress the need for ongoing research on how environmental factors affect harbor seals.

Cite This Study

Kappa et al. (2025) studied this question.

synapsesocial.com/papers/68bb49db6d6d5674bcd002c8https://doi.org/10.1111/mms.70069
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1DNA analysis of scats reveals spatial and temporal structure in the diversity of harbour seal diet from local haulouts to oceanographic bioregions2024 · 2 citations
  2. 2Sex-specific diet differences in harbor seals (Phoca vitulina) via spatial assortment2024
  3. 3What bycatch tells us about the diet of harbor and gray seals and overlap with commercial fishermen2024 · 5 citations
  4. 4Dietary niches of three resident phocid seal species in Kongsfjorden, Svalbard, Norway2026
  5. 5Temporal changes in the dietary niche of sympatric seals provides insight into the role of competition in population declines2026