ArticleRapid communications in mass spectrometry : RCM2026
Stable Isotope Composition of Skin Layers Confirms Trophic Differentiation of Baird's and Sato's Beaked Whales (Berardius spp.) in the Western North Pacific.
Article in Rapid communications in mass spectrometry : RCM, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
rationaleClosely related whale species can appear similar yet occupy distinct ecological niches. Sato's beaked whale (Berardius minimus) was only recently recognized as a separate species and was previously grouped with Baird's beaked whale (Berardius bairdii), limiting our understanding of their ecological differences. Clarifying their trophic ecology is essential for accurate species-specific conservation and management.
methodsSkin biopsy and necropsy samples of B. bairdii and B. minimus were collected in the western North Pacific in 2017-2025. Carbon (δ
resultsB. bairdii exhibited significantly higher δ
conclusionsThese results demonstrate clear ecological differentiation between B. bairdii and the recently described B. minimus. Historical data attributed to B. bairdii should be re-evaluated to ensure accurate species-specific interpretations of diet and habitat use, improving ecological understanding and conservation assessments.
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