2025-03-05 愛媛大学
<関連情報>
- https://www.ehime-u.ac.jp/data_relese/pr_20250305_cmes/
- https://www.ehime-u.ac.jp/wp-content/uploads/2025/03/pr_20250305_cmes.pdf
- https://pubs.acs.org/doi/10.1021/acs.est.4c14352
日本沿岸に座礁した11種の歯鯨における人為起源および天然有機ハロゲン化合物の包括的スクリーニング: 種特異的蓄積プロファイルとその生息環境を理解するための潜在的指標 Comprehensive Screening of Anthropogenic and Natural Organohalogen Compounds in 11 Species of Toothed Whales Stranded along Japanese Coasts: Species-Specific Accumulation Profiles and Potential Indicators for Understanding Their Habitats
Tomoya Sunouchi,Akitoshi Goto,Nguyen Minh Tue,Yuko Tajima,Tadasu K. Yamada,Hisato Iwata,Shinsuke Tanabe,Tatsuya Kunisue,
Environmental Science & Technology Published: February 14, 2025
DOI:https://doi.org/10.1021/acs.est.4c14352
Abstract
Comprehensive screening studies have revealed the accumulation of a large number of routinely unmonitored organohalogen compounds (OHCs) in cetaceans. However, these previous studies targeted only a limited number of whale species. In this study, we conducted screening and quantitative analyses to comprehensively identify OHCs accumulated in 48 adult male blubber samples of 11 whale species and to elucidate species-specific accumulation profiles. A total of 313 OHCs were detected in the blubber samples. Quantification and semiquantification results for anthropogenic OHCs and halogenated natural products (HNPs) showed compound- and species-specific accumulation patterns. Polychlorinated terphenyls and Cl5–7-substituted homologues of dichlorodiphenyldichloroethylenes accumulated significantly in coastal cetaceans, whereas hexachlorocyclohexanes and hexachlorobenzene were more prominent in cold-water species, suggesting the influence of the mobility of these compounds from coastal sources. In addition, cluster analysis revealed specific HNP accumulation profiles for different habitats. Therefore, the HNP accumulation profile in each species can be a useful indicator of their habitat and migration patterns as the profile may reflect interspecies differences in exposure associated with their habitat-specific preys.
