ArticleScientific reports2020
Interannual variability in the lipid and fatty acid profiles of east Australia-migrating humpback whales (Megaptera novaeangliae) across a 10-year timeline.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Influence of Solvent Lipid Extraction on Tissue-Specific Carbon Isotopes.Ecology and evolution · 2026Article
- Interpretation of southern hemisphere humpback whale diet via stable isotopes; implications of tissue-specific analysis.PloS one · 2023Article
- Stratification, sex and ontogenetic effects on the lipid and fatty acid profiles in the blubber of sperm whales from Tasmanian waters.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2022Review
- Climate change and cetacean health: impacts and future directions.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Review
- Validation of quantitative fatty acid signature analysis for estimating the diet composition of free-ranging killer whales.Scientific reports · 2022Article
- A deep dive into fat: Investigating blubber lipidomic fingerprint of killer whales and humpback whales in northern Norway.Ecology and evolution · 2021Article
- Multi-Omics Approaches and Radiation on Lipid Metabolism in Toothed Whales.Life (Basel, Switzerland) · 2021Review
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Southern hemisphere humpback whales are classified as high-fidelity Antarctic krill consumers and as such are vulnerable to variability and long-term changes in krill biomass. Evidence of heterogeneous feeding patterns of east coast of Australia migrating humpback whales has been observed, warranting a comprehensive assessment of interannual variability in their diet. We examined the lipid and fatty acid profiles of individuals of the east coast of Australia migrating stock sampled between 2008 and 2018. The use of live-sampled blubber biopsies showed that fatty acid profiles varied significantly among all years. The two trophic indicator fatty acids for Antarctic krill, 20:5ω3 and 22:6ω3 remained largely unchanged across the 10-year period, suggesting that Antarctic krill is the principal prey item. A distance-based linear model showed that 33% of the total variation in fatty acid profiles was explained by environmental variables and climate indices. Most of the variation was explained by the Southern Annular Mode (23.7%). The high degree of variability observed in this study was unexpected for a species that is thought to feed primarily on one prey item. We propose that the observed variability likely arises from changes in the diet of Antarctic krill rather than changes in the whale's diet.
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